Provided are a large-diameter steel wire having excellent bending performance, a marine hose comprising the steel wire, and an evaluation method capable of simply and easily ascertaining the bending performance of the steel wire. A single steel wire 6w having an outer diameter of more than or equal to 5 mm is held by a pair of holders 11 that are longitudinally spaced apart by a prescribed interval L, and a tensile test is conducted. The bending performance of the steel wire 6w is evaluated on the basis of a comparison of the value of the reduction R of area of the steel wire 6w that has ruptured with a pre-set reference value Rx. The prescribed interval L is 30 mm, the tensile rate is 50 mm/min, the temperature is room temperature, and the reduction R of area (%) is a value calculated according to ((S0-S1)/S1)×100, where S0 is the cross-sectional area of the steel wire 6w before the tensile test, and S1 is the cross-sectional area of the fractured surface after the tensile test.
Provided is a tire rubber composition capable of increasing gripping force without compromising wear resistance and steering stability. In the tire rubber composition, 3-100 parts by mass of an aromatic hydrocarbon resin satisfying the conditions of expressions (1) and (2) below is blended with respect to 100 parts by mass of a diene rubber (in the expressions, Tg indicates the glass transition temperature [unit: °C], Mw indicates the weight-average molecular weight, and Mn indicates the number-average molecular weight). (1): Tg > 36×Mw/Mn+22 (2): Mw > 3000
22SA of 100 m2/g to 300 m2/g (in the expressions, Tg is the glass transition temperature (units: ºC), Mw is the weight average molecular weight, and Mn is the number average molecular weight). (1): Tg > 36 × Mw/Mn + 22 (2): Mw > 3000
Provided is a refrigerant-transporting hose excellent in flexibility, water-vapor barrier property, and heat resistance. The refrigerant-transporting hose (1) includes an outer layer (4), a reinforcement layer (3), and an inner layer (2), said hose being characterized in that the outer layer is formed from a resin composition containing 100 parts by mass of an elastomer having a polyisobutylene skeleton, 10 to 150 parts by mass of a cross-linked resin, and 2.5 to 25 parts by mass of a cross-linking agent for the elastomer having the polyisobutylene skeleton, wherein the resin composition forming the outer layer has a water-vapor permeability of 3.0 g·mm/ (m2·24h) or less.
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B32B 25/18 - Layered products essentially comprising natural or synthetic rubber comprising butyl or halobutyl rubber
B60H 1/08 - Heating, cooling or ventilating devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules
C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances
C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
C08L 23/10 - Homopolymers or copolymers of propene
C08L 23/22 - Copolymers of isobutene; Butyl rubber
C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
C08L 101/00 - Compositions of unspecified macromolecular compounds
C08L 101/10 - Compositions of unspecified macromolecular compounds characterised by the presence of specified groups containing hydrolysable silane groups
F16L 11/10 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements not embedded in the wall
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B32B 25/18 - Layered products essentially comprising natural or synthetic rubber comprising butyl or halobutyl rubber
B60H 1/08 - Heating, cooling or ventilating devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules
C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances
C08L 23/00 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
C08L 23/10 - Homopolymers or copolymers of propene
C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
C08L 101/00 - Compositions of unspecified macromolecular compounds
C08L 101/10 - Compositions of unspecified macromolecular compounds characterised by the presence of specified groups containing hydrolysable silane groups
F16L 11/08 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
F16L 11/10 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements not embedded in the wall
Provided are a conveyor belt that can ensure excellent impact resistance against impact from a conveyed item loaded on an upper cover rubber even when the conveyor belt is in a low-temperature state and a method for producing the same. An upper cover rubber 3 and a lower cover rubber 4 are arranged so as to sandwich a core layer 2 from above and below respectively, a breaker layer 5 is arranged between the core layer 2 and the upper cover rubber 3, the breaker layer 5 has a structure provided with a woven material 6 having warp threads 6a extending in the longitudinal direction of the belt and weft threads 6b extending in the lateral direction of the belt and an upper coat rubber layer 7 and a lower coat rubber layer 8 that cover an upper surface and a lower surface of the woven material 6, respectively. The fineness of the woven material 6 of the belt in the longitudinal direction is 26000 dtex/cm or more, the fineness of the belt in the lateral direction is 90000 dtex/cm or more, the tensile strength of the belt in the longitudinal direction is 2000 N/cm or more, the tensile strength of the belt in the lateral direction is 6000 N/cm or more, and the layer thickness of each of the upper coat rubber 7 and lower coat rubber layer 8 is 0.5 mm or more.
In the present invention, a socket is uniformly increased in thickness with minimal elongation in the axial extension regardless of the state of the socket, such that the quality with which a hose is attached to a hose coupling fitting is increased. A crimping connector 30 comprising a main connector part 32 that extends along the axial direction of a socket 14 and crimps the socket 14 in a state in which an end of a hose 2 has been inserted into an annular space S formed between an outer peripheral part of a nipple 12 of a hose joint fitting 10 and an inner peripheral part of the socket 14, and a connector-side contact part 34 that extends from one extension-direction end of the main connector part 32 to the radially inner side of the socket 14 and that can come into contact with an axial-direction end part 1404 of the socket 14 from the axial direction of the socket 14 on the side where the end part of the hose 2 is inserted is caused to move from the radially outer side of the socket 14 to the radially inner side of the socket 14 so as to crimp the socket 14 of the hose joint fitting 10.
F16L 33/207 - Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
The purpose of the present invention is to provide: a rubber composition which gives cured objects excellent in terms of elongation at rupture, hardness, and ozone resistance; and a hose. This rubber composition comprises: a rubber component comprising 40 mass% or more ethylene/propylene/unconjugated diene copolymer having a diene content of 6 mass% or higher and an ethylene-ethylene chain structure content of 35.0 mol% or higher; carbon black; and sulfur. This hose is formed using the rubber composition.
In a cross-section of the tire 1 along the tire meridian direction, a point on a side profile located at the same tire-radial-direction position as an end of the innermost layer 141 of belt layers 14 is referred to as point Au. The foot of a perpendicular from point Au to a carcass layer 13 is referred to as point Iu, and the foot of a perpendicular from a tire-maximum-width position Ac to the carcass layer is referred to as point Ic. The carcass layer 13 comprises one or more carcass plies obtained by coating carcass cords 13cc with a coating rubber 13cr. In the region ranging from point Iu to point Ic, the distance TLu [mm] between the center of the carcass cords 13cc of the innermost carcass ply 13A and the inner surface of the tire, with respect to the tire outer diameter OD [mm], is in the range of 0.00010≤TLu/OD≤0.01500.
B60C 3/04 - Tyres characterised by transverse section characterised by the relative dimensions of the section, e.g. low profile
B60C 5/14 - Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
B60C 9/08 - Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship the cords extend transversely from bead to bead, i.e. radial ply
B60C 13/00 - Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
In order to improve the durability of a bead portion, in a pneumatic tire (1), two end portions of a bead core (21) in the direction of width of the tire are respectively formed by vertical lines (25) extending in a radial direction of the tire; with respect to the vertical lines (25), the length CV of the vertical lines (25) is within the range of 31% or above and 45% or below relative to a core height CH; and with respect to a first layer (31a), a second layer (31b) and a third layer (31c) of the bead core (21), in every two adjacent layers (31), the number of bead wires (30) of the layer (31) located on an outer side of the tire in the radial direction is two or more than the number of bead wires (30) of the layer (31) located on an inner side of the tire in the radial direction, and the mutual offset of the bead wires (30) located at the ends of a single side in the direction of width of the tire is half of the number of bead wires (30). In the first layer (31a) and the second layer (31b) and in the second layer (31b) and the third layer (31c), the sides where the mutual offset of the bead wires (30) is half of the number of the bead wires (30) are opposite each other in the direction of width of the tire.
Provided is a tire rubber composition which is excellent in terms of wear resistance, wet performance, and low rolling resistance, for which the low rolling resistance has little temperature dependence, and which is excellent in terms of extrusion molding processability, as well. This tire rubber composition is characterized in that: 60-90 parts by mass of silica and 15-40 parts by mass of a thermoplastic resin are added to 100 parts by mass of a diene rubber containing 50-75 mass% of an end-modified SBR (A) having a weight-average molecular weight of 300,000-500,000 and a glass transition temperature of at most -50°C, 0-50 mass% of an end-modified SBR (B) having a weight-average molecular weight of at least 600,000, and 0-30 mass% of a natural rubber, and a silane coupling agent that has a mercapto structure is added thereto in a quantity that is 2-15 mass% of the mass of the silica; the total mass of the end-modified SBR (B) and the natural rubber is at least 1/3 of the mass of the end-modified SBR (A); the weight-average molecular weight of a mixture composed of the end-modified SBR (B) and the natural rubber is at least 700,000; and the average glass transition temperature of the diene rubber is at most -50°C.
C08L 45/00 - Compositions of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring system; Compositions of derivatives of such polymers
C08L 57/02 - Copolymers of mineral oil hydrocarbons
C08L 65/00 - Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain; Compositions of derivatives of such polymers
In a tire 1, in a cross-sectional view in a tire meridian direction, a point Au is defined on a side profile that is at the same position in a tire radial direction as to an end portion of an innermost layer 141 of belt layers 14. Also, a distance Hu is defined in the tire radial direction, from a tire greatest width position Ac to the point Au. Also, a point Au' is defined on the side profile at a radial-direction position that is 70 [%] of the distance Hu from the tire greatest width position Ac. Also, a point An is defined on the side profile at a radial-direction position that is 35 [%] of the distance Hu from the tire greatest width position Ac. At this time, a curvature radius RP [mm] of an arc passing through the tire greatest width position Ac, the point Au', and the point An, with the tire mounted to a stipulated rim, filled to a stipulated internal pressure, and is in an unloaded state, is within a range of 0.20 ≤ RP/SH ≤ 1.80 with respect to a tire cross-sectional height SH [mm].
B60C 13/00 - Tyre sidewalls; Protecting, decorating, marking, or the like, thereof
B60C 3/00 - Tyres characterised by transverse section
B60C 9/00 - Reinforcements or ply arrangement of pneumatic tyres
B60C 9/08 - Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship the cords extend transversely from bead to bead, i.e. radial ply
B60C 9/18 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
Provided are: a rubber product which is inhibited from decreasing in production efficiency or shapability, by reducing the number of reinforcing layers stacked in the cylindrical part, while maintaining sufficient resistance to inner pressure; and a method for producing the rubber product. A plurality of reinforcing layers 5 are coaxially arranged between an inner layer 4 and an outer layer 10 to form a cylindrical shaped object 1A and this shaped object 1A is vulcanized to produce a rubber product having a cylindrical part 3a. The reinforcing layers 5 are each composed of: cord fabric 6 obtained by arranging a large number of fiber cords 7 in parallel and giving a given adhesion treatment thereto; and coating rubber layers 9 with which both surfaces of the cord fabric 6 are coated. The reinforcing layers 5 have a bias structure in which the fiber cords 7 of each reinforcing layer 5 extend so as to cross those of the adjoining reinforcing layer 5. The cord fabric 6 is one which has a tensile strength, along the fiber cord extension direction, of 4,320 N/cm or greater and a weight of 950 g/m2 or less and which, after the given adhesion treatment, has a bending rigidity of 30 g/cm or less. The coating rubber layers 9 each have a layer thickness of 0.2-1 mm.
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B29C 35/02 - Heating or curing, e.g. crosslinking or vulcanising
B29C 70/22 - Fibrous reinforcements only characterised by the structure of fibrous reinforcements using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure
B29C 70/30 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
F16L 11/08 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
Provided is a rubber composition for tires which is excellent in terms of wear resistance and wet performance and has excellent moldability. The rubber composition is one obtained by incorporating 50-150 parts by mass of silica and 10-80 parts by mass of a thermoplastic resin into 100 parts by mass of diene-based rubbers comprising a styrene/butadiene rubber (A), a styrene/butadiene rubber (B), and butadiene rubber, and is characterized in that the butadiene rubber and the styrene/butadiene rubber (A) are contained in amounts of 30 mass% or larger and 15-35 mass%, respectively, with respect to the diene-based rubbers, the amount of which is taken as 100 mass%, that the content of the styrene/butadiene rubber (B) is 1-2 times by mass that of the styrene/butadiene rubber (A), that the styrene/butadiene rubber (A) has a glass transition temperature of -75°C to -50°C, and that the styrene/butadiene rubber (B) has a weight-average molecular weight which is at least twice the weight-average molecular weight of the styrene/butadiene rubber (A).
Provided is a rubber composition constituted so as to achieve a balance between abrasion resistance, low rolling resistance and wet grip performance. This rubber composition contains 20-150 parts by mass of a white filler and a total of not less than 20 parts by mass and less than 50 parts by mass of a thermoplastic resin and, optionally, a plasticizer relative to 100 parts by mass of a diene-based rubber including a styrene-butadiene rubber. The thermoplastic resin accounts for 75 mass% or more of the total amount. The relationships |σbf-σaf| ≥ 4 and |tanδbf-tanδaf| ≤ 0.02 are satisfied when: the half value width of a tanδ temperature dependency curve of the rubber composition is denoted by σbf (ºC); the tanδ value at a temperature that is 90°C higher than the peak temperature at a maximum tanδ value of the rubber composition is denoted by tanδbf; the half value width of a tanδ temperature dependency curve of the rubber composition after the rubber composition is treated by being immersed in toluene and then dried is denoted by σaf (ºC); and the tanδ value at a temperature that is 90°C higher than the peak temperature at a maximum tanδ value of the treated rubber composition is denoted by tanδaf.
Provided are a functional component assembly, a tire comprising the same, and a method of assembling a functional component assembly with which, when housing a functional component in a support, it is possible to reliably fix the functional component to the support by means of a determination part, and to prevent damage to the support or the functional component. A functional component assembly 1 comprises a functional component 20 having a function of detecting the state of a tire, and a support 10 that houses the functional component 20 and is attached to a tire inner surface, wherein: a space between the support 10 and the functional component 20 is filled with an adhesive X so that at least a part of the bottom surface of the functional component 20 has a state of being fixed to the support 10; and the support 10 comprises an opening part 14 for inserting the functional component 20, and a determination part 15 which is provided at a portion different from the opening part 14 to determine the degree of filling of the adhesive X.
Provided are: a casing and cap assembly that makes it possible to improve the durability of a detector, reduces the risk of damage to both the detector and an object as a result of contact therebetween, and makes it possible to maintain a suitable wireless communication state with the detector; and a marine hose fluid leak detection system comprising the assembly. In a casing 18 in which a pressure sensor 15 and an IC tag 12 are accommodated in a pressure-holding chamber 18c formed by a substrate 18a and a radio wave-transmitting section 18b, three or more metal protruding sections 19 with spaces therebetween in a circumferential direction at outer circumference-side positions of the radio wave-transmitting section 18b in a planar view are made to protrude from the substrate 18a above the radio wave-transmitting section 18b, the top end sections of the protruding sections 19 are spaced apart from each other, and while in a state in which an annular cap 20 made from a resin or rubber covers the upper ends of each of the protruding sections 18 so as to be continuous in the circumferential direction and is fixed to the casing 18, an inner circumference-side area and an outer circumference-side area with respect to each of the protruding sections 19 communicate via a gap between the lower end sections of the protruding sections 19 adjacent in the circumferential direction.
F17D 5/06 - Preventing, monitoring, or locating loss using electric or acoustic means
F16L 11/12 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
F16L 11/133 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting buoyant
F16L 55/00 - Devices or appurtenances for use in, or in connection with, pipes or pipe systems
This tire comprises a power reception coil that generates electric power upon reception of an AC magnetic field from the outside of the tire. The power reception coil is provided to a side part, between a tread part and a bead part, at the inner side surface facing a tire hollow region of the tire, and generates AC power upon reception of an AC magnetic field that has passed through said side part. The power reception coil has a circular shape and extends along the inner side surface so as to go around in the tire circumferential direction. When the thickness of the side part at the location, of the inner side surface, where the power reception coil is disposed is defined as Ts and the minimum thickness of the side part in the tire radial thicknesses is defined as Tmin, the ratio Ts/Tmin is 1.0-5.5.
B60C 19/00 - Tyre parts or constructions not otherwise provided for
B60C 23/04 - Signalling devices actuated by tyre pressure mounted on the wheel or tyre
H02J 50/12 - Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
H02J 50/50 - Circuit arrangements or systems for wireless supply or distribution of electric power using additional energy repeaters between transmitting devices and receiving devices
Provided is a tire configured to have improved pin slip-off resistance without causing further damage to road surfaces. The tire comprises, in a tread section 1, a hole 13 for insertion of a stud pin 20. A series of flat sections 14 provided in an annular shape so as to match the profile line of the tread section 1 exist around the hole 13. When an annular region A is defined as the region around the flat sections 14a at a distance of 4 mm to 8 mm from the center O of the hole, protrusions raised more than the flat sections 14 and depressions recessed more than the flat sections 14 are intermixed in the annular region A.
Provided is a monitoring system and method whereby it is possible to more easily ascertain the internal and external conditions of a marine hose. After a drone 21 has moved to the airspace in the upper vicinity of an IC tag 11 placed on the surface of a marine hose 1, the detection result of the detection index by a detector 10 is transmitted through a return radio wave R2 and is input to a calculation device 20 as acquisition data, the return radio wave R2 being transmitted from the IC tag 11 activated by a transmission radio wave R1 transmitted from a communicator 19 mounted on the drone 21, to the communicator 19 in response to the transmission radio wave R1. The internal condition of the marine hose 1 is determined by the calculation device 20 on the basis of the magnitude of the difference between the acquisition data and the reference data. The external condition of the marine hose 1 is determined by the calculation device 20 on the basis of the difference between the image data acquired by a camera device 22 while the drone 21 is in the airspace above the marine hose 1 and the reference image data.
F17D 5/02 - Preventing, monitoring, or locating loss
F16L 11/12 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
F16L 11/133 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting buoyant
F16L 55/00 - Devices or appurtenances for use in, or in connection with, pipes or pipe systems
G06K 7/10 - Methods or arrangements for sensing record carriers by corpuscular radiation
Provided is a tire 1 in which a point Al is defined as a point on a side profile at the same position in a tire radial direction as a radially outer end section of a bead core 11, 11; a distance Hl is defined as the distance in the tire radial direction from a maximum tire width position Ac to the point Al; a point Al' is defined as a point on the side profile at the position in the radial direction at 70[%] of the distance Hl from the maximum tire width position Ac; and a point Am is defined as a point on the side profile at the position in the radial direction at 35[%] of the distance Hl from the maximum tire width position Ac. In the case of the foregoing definitions, the radius of curvature RO [mm] of a circular arc passing through the maximum tire width position Ac, the point Al', and the point Am when the tire is mounted on a regulation rim, is subjected to a regulation internal pressure, and is put in an unloaded state, is in the range 0.20 ≤ RO / SH ≤ 1.20, with respect to the cross-sectional height SH [mm] of the tire.
Provided are a fluid leakage detection system and method for various types of marine hose, which are capable of accurately detecting whether there is fluid leakage from various types of marine hose. A conductive rubber or conductive paste of which an electric resistance value varies over a reference by being impregnated with a fluid L is adopted as a detection element 15 which forms a loop circuit 17 connected to a passive IC tag 11,,, and is continuously extended in a longitudinal direction of a hose main body between an internal layer 3 and a first reinforcement layer 4. An IC tag 11 is disposed on the surface of a marine hose 1. Electric resistance value data Dr in the loop circuit 17 when a transmission radiowave R1 transmitted from a communication apparatus 19 starts the IC tag 11 is transmitted to the communication apparatus 19 by means of a return radiowave R2 transmitted from the IC tag 11 in response to the transmission radiowave R1, and is input to a calculation device 20. Whether there is leakage of the fluid L is determined on the basis of the magnitude of the difference between the electric resistance value data Dr and a reference resistance value data Dc.
F16L 55/00 - Devices or appurtenances for use in, or in connection with, pipes or pipe systems
F16L 11/12 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
F16L 11/133 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting buoyant
F17D 5/06 - Preventing, monitoring, or locating loss using electric or acoustic means
G01M 3/16 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
Provided are a resin tube manufacturing method and device with which it is possible to more effectively utilize a resin when molding a resin tube by resin injection molding using an assist material. A molten resin R1 is injected by an injection machine 2 from one end 8a of a cavity 8 formed in a mold 7 toward another end 8b to fill the cavity 8, and then injecting a fluid or solid assist material As with an assist material injection machine 5 from the other end 8b of the cavity 8 toward the one end 8a to discharge the excess molten resin R1 from the cavity 8, thereby curing the cylindrical molten resin R1 remaining in the cavity 8 to manufacture a resin tube 10. The excess molten resin R1 discharged from the cavity 8 is caused to flow back to the inside of the injection machine 2, and when this back-flowed molten resin R1 is used to manufacture a next new resin tube 10, the molten resin is used by being injected by the injection machine 2 from the one end 8a of the cavity 8 toward the other end 8b.
B29K 105/12 - Condition, form or state of moulded material containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
Provided is a conveyor belt operation management system and method that, with a simple configuration, can accurately ascertain the operation status of a conveyor belt. Based on a reception time t at which after an outgoing radio wave R1 is transmitted from a detector 7 located at a predetermined detection position P of a conveyor device 10 toward a passive type IC tag 2 installed on a conveyor belt 13, a return radio wave R2 returned from the IC tag 2 in response to the outgoing radio wave R1 is received by the detector 7, a running speed V of the conveyor belt 13 is calculated by an arithmetic device 8 to ascertain the operation status of the conveyor belt 13 on the basis of temporal changes in the running speed V, and the arithmetic device 8 transmits data DV on the temporal changes of the running speed V to a terminal device 9 through a communication network, the terminal device 9 being located at a position away from the installation site of the conveyor device 10.
B65G 43/02 - Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load- carriers, e.g. for interrupting the drive in the event of overheating
The present invention provides a rubber composition characterized by being obtained by incorporating 1-100 parts by mass of (B) a polyolefin (which is not a high-density polyethylene having a density of 0.950 g/cm3 or higher) having a hydrolytically condensable silyl group in the molecule into 100 parts by mass of (A) a rubber component.
C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
The present invention provides a rubber composition for rim cushions, the rubber composition being improved in terms of low possibility of heat generation, while maintaining good hardness, elongation at break and wear resistance and achieving a good balance among these properties at high levels. According to the present invention, silica having a CTAB adsorption specific surface area of 60 m2/g to 100 m2/g, carbon black having a CTAB adsorption specific surface area of 60 m2/g to 160 m2/g, and a sulfur-containing silane coupling agent are added to a diene rubber that contains 35% by mass to 65% by mass of an isoprene rubber and 35% by mass to 65% by mass of a butadiene rubber; at least one terminally modified butadiene rubber for silica is used as the butadiene rubber; the addition amount of the silica relative to 100 parts by mass of the diene rubber is set to 10 parts by mass or more; the total addition amount of the silica and the carbon black relative to 100 parts by mass of the diene rubber is set to more than 50 parts by mass; and the product of the stress M100 at 100% elongation and the hardness is set to 150 or more.
This tire 1 is configured in a manner such that the radial-direction distance D3 from a point P1 to a point T3 relative to a radial-direction distance D1 from the point P1 to a point T1 is within the range of 0.05≤D3/D1≤0.15 in a cross-sectional view in the direction of the meridian of the tire in an unloaded state with 230 [kPa] applied thereto while the tire 1 is mounted to a prescribed rim. The radial-direction distance D6 from the point P1 to a point T6 relative to the radial-direction distance D3 from the point P1 falls within the range of 3.00≤D6/D3≤6.00. The curvature radius R1 of a first arc which passes through points T3, T4 and T5 relative to the curvature radius R2 of a second arc which passes through points T1, T6 and T7 falls within the range of 0.40≤R1/R2≤1.00.
The present invention studies the internal shape of an accommodating body that accommodates a functional component and thereby provides: a functional-component-attached accommodating body which prevents the detachment of the functional component by enhancing the holding force for the functional component, and which makes it possible to avoid a degradation in the durability of the accommodating body while facilitating the work for accommodating the functional component into the accommodating body; and a tire. This functional-component-attached accommodating body 1 comprises a functional component 20 for acquiring tire information, and an accommodating body 10 which accommodates the functional component 20. The accommodating body 10 has: a bottom section 11 fixed to a tire inner surface; a side wall section 12 protruding from the bottom section 11; an accommodating section 13 formed by the bottom section 11 and the side wall section 12; and an opening 14 communicating with the accommodating section 13, the accommodating body having, in at least a portion of an inner wall surface 12x of the side wall section 12, a recesses-and-protrusions region 15 composed of a plurality of protruding sections 15a and/or a plurality of recess sections 15b.
The present invention provides: a plastic silencer connected to piping in an automotive air conditioner, the plastic silencer having sufficient pressure resistance with respect to internal pressure while being lightweight; and a method for manufacturing the plastic silencer. The present invention is such that a plastic insertion-side component 2 having an insertion part 4 at one axial-direction end section of a barrel part 3 and a pipe part 9 linked to the other end section via an expansion pipe part 8, with a circumferential rib 10a being provided in a protruding state to the outer peripheral surface of the barrel part 3, and a plastic reception-side component 11 having a receiving part 13 at the other axial-direction end section of a barrel part 12 and a pipe part 20 linked to the one end section via an expansion pipe part 19, with a circumferential rib 21a being provided in a protruding state to the outer peripheral surface of the barrel part 12, are configured such that the barrel parts 3, 12, which are joined by inserting the insertion part 4 into a circular groove 14 in the receiving part 13 and spin-welding contacting portions of the insertion part 4 and the circular groove 14, together form a cylinder part, the present invention having a cylindrical flow-stopping wall part 18 linked so as to be offset toward the outer periphery of the joining portion, and a cylindrical flow-stopping wall part 16 linked so as to be offset toward the inner periphery of the joining portion.
B29C 69/02 - Combinations of shaping techniques not provided for in a single one of main groups , e.g. associations of moulding and joining techniques; Apparatus therefor of moulding techniques only
In a tire 1, a middle land part 32 comprises: first middle fine grooves 321 which each have a linear shape or a circular arc shape and which pass through the middle land part 32; and second middle fine grooves 322 which each have a letter-Z shape and which pass through the middle land part 32. Further, a center land part 33 comprises: first center fine grooves 331 which each have one end located at an edge of the center land part 33 so as to be connected to a corresponding one of center main grooves 22 and the other end located within the center land part 33; and second center fine grooves 332 which each extend in a tire circumferential direction and which each have both ends thereof located within the center land part 33. In addition, the first center fine grooves 331 are each inclined in one direction in the tire circumferential direction from the one end toward the other end. Furthermore, the first center fine grooves 331 and the second center fine grooves 332 are arranged so as to form a letter-V shape having a vertex pointing toward one direction in the tire circumferential direction.
Provided are a method and a system for inspecting the quality of a tire member which make it possible to quickly and accurately grasp the magnitude of variation in a predetermined type of quality in the lengthwise direction of a long tire member obtained by joining together a plurality of types of components. Image data D for a predetermined length range C which is continuous without gaps in a lengthwise direction L is obtained by continuously performing a step in which a long tire member R is conveyed in the lengthwise direction L using a conveyance device 2 while irradiating the predetermined length range C of the tire member R with X-rays by means of an X-ray inspection device 3 from the surface side of the tire member R and obtaining image data D based on the X-ray transparency of the predetermined length range C, each of the acquired pieces of image data D is input to a calculation device 4, and the magnitude of variation in the lengthwise direction L of the width dimension of a component M1 formed from unvulcanized rubber in which the mass of the tire member R and the content of a specific component are greater is calculated by the calculation device 4 on the basis of the gradation of light and shade in each of the pieces of image data D.
In a cross-sectional view of this tire 1 in the tire meridian direction, a stress-mitigating layer 4 continuously extends from the groove bottom of a main groove 21 to the tread surfaces of left and right land portions 31 and 32 and covers edge portions of the land portions 31 and 32. The width Wc of the stress-mitigating layer 4 in the tread surfaces of the land portions 31 and 32 is within the range of 0.06≤Wc/Hg with respect to the groove depth Hg1 of the main groove 21. The total width ΣWc of the stress-mitigating layer 4 on the tread surface of one land portion 31 or 32 is within the range of ΣWc/Wb≤0.70 with respect to the contact width Wb1 or Wb2 of the land portion 31 or 32.
The present invention provides a rubber composition for tires, the rubber composition enabling the achievement of further improved balance among on-snow performance, wet performance and wear resistance. The present invention provides a rubber composition which is obtained by adding 70 parts by mass or more of an inorganic filler that contains silica and carbon black to 100 parts by mass of a diene rubber that contains 30% by mass to 60% by mass of a terminally modified styrene-butadiene rubber and has an average glass transition temperature of -70°C to -55°C, wherein: the silica content in the inorganic filler is 60% by mass or more; and the terminally modified styrene-butadiene rubber contains 23% by mass or more of an extending oil, while having a styrene unit content of 37% by mass or less. This rubber composition is characterized in that the tensile stress Mi of a cured product thereof at 300% deformation and the tensile stress Ma of the cured product at 300% deformation after a heat treatment at 50°C for 1,000 hours satisfy formula (Ma - Mi)/Mi ≤ 0.3.
Provided are a tire manufacturing method and manufacturing system with which it is possible for tires having various specifications to be manufactured with good productivity, by forming a green tire by using a robot arm to move a molding drum body sequentially to necessary work stations more flexibly and smoothly. Work stations S are provided in such a way that a plurality of molding drum bodies 2 can be placed temporarily on placement devices 8 between the adjacent work stations S, and in such a way that at least three work stations S are adjacent to one another in a molding step, wherein: a necessary plurality of the work stations S are selected and a movement route of the molding drum body 2 is determined in accordance with the specification of a green tire G; the molding drum body 2 is caused to move in accordance with the movement route by being transferred using the placement devices 8 disposed in positions corresponding to the movement route, using robot arms 6 disposed in positions corresponding to the movement route; and the green tire G is molded by performing molding work at the selected work stations S.
Provided are a tire manufacturing method and manufacturing system with which it is possible for a green tire that is molded by moving a molding drum body sequentially to a plurality of work stations to be molded efficiently while ascertaining a prescribed quality thereof. A molding drum body 2 for which molding work at a work station S1 has been completed, and to which a tire component member M has been affixed is temporarily placed on a placement device 8, and, as a predetermined quality of a green tire G which has been formed by means of the tire component member M affixed to the molding drum body 2 and molding of which is either ongoing or is complete, a mass of the green tire G is examined by means of a mass meter 12, and a profile shape of the green tire G is examined by a profile sensor 13, while the molding drum body 2 is temporarily placed on the placement device 8.
The present invention provides a resin composition which has excellent flexibility, water vapor barrier properties and heat resistance. The present invention provides a resin composition which contains a silane-modified resin and an elastomer that has a polyisobutylene skeleton, and which is characterized in that: the content of the elastomer that has a polyisobutylene skeleton based on the mass of the resin composition is 30% by mass to 90% by mass; the content of the silane-modified resin based on the mass of the resin composition is 10% by mass to 70% by mass; the water vapor transmission rate of the resin composition is 2.0 g∙mm/(m2100251002525 of the resin composition at 25°C is 0.2 to 1.0.
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B32B 25/18 - Layered products essentially comprising natural or synthetic rubber comprising butyl or halobutyl rubber
B60H 1/08 - Heating, cooling or ventilating devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
C08J 3/24 - Crosslinking, e.g. vulcanising, of macromolecules
C08J 5/00 - Manufacture of articles or shaped materials containing macromolecular substances
C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
C08L 101/10 - Compositions of unspecified macromolecular compounds characterised by the presence of specified groups containing hydrolysable silane groups
F16L 11/10 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements not embedded in the wall
F24F 5/00 - Air-conditioning systems or apparatus not covered by group or
37.
HOSE FOR REFRIGERANT TRANSPORTATION AND PRODUCTION METHOD THEREFOR
Provided is a hose for refrigerant transportation which is excellent in terms of flexibility, water-vapor barrier property, and heat resistance. The hose for refrigerant transportation comprises an outer layer, a reinforcement layer, and an inner layer, and is characterized in that the outer layer is made of a resin composition comprising an elastomer having a polyisobutylene skeleton and a crosslinked resin, the content of the elastomer having a polyisobutylene skeleton in the resin composition being 30-90 mass% with respect to the mass of the resin composition and the content of the crosslinked resin in the resin composition being 10-70 mass% with respect to the mass of the resin composition, the resin composition has a water vapor permeability of 2.0 g·mm/(m2100251002525, of 0.2-1.0.
B32B 25/10 - Layered products essentially comprising natural or synthetic rubber next to a fibrous or filamentary layer
B32B 25/18 - Layered products essentially comprising natural or synthetic rubber comprising butyl or halobutyl rubber
B60H 1/08 - Heating, cooling or ventilating devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
C08L 23/22 - Copolymers of isobutene; Butyl rubber
C08L 101/10 - Compositions of unspecified macromolecular compounds characterised by the presence of specified groups containing hydrolysable silane groups
F16L 11/10 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements not embedded in the wall
The present invention provides a fuel transportation hose (10) that can suppress elution of sulfur to a transported object and can suppress interlayer detachment in the hose. This fuel transportation hose (10) includes an inner layer (11), an intermediate layer (12), a reinforcement layer (13), and an outer layer (14) that are laminated in the stated order. The inner layer (11) contains a thermoplastic resin composition containing a first thermoplastic resin having a load flexure temperature of not lower than 75°C, and a second thermoplastic resin having a load flexure temperature lower than 75°C. The intermediate layer (12) contains a rubber composition containing a nitrile rubber. The inner layer (11) and the intermediate layer (LB) (12) are adhered directly or via an adhesive layer.
This pneumatic tire has, on the tire outer surface of at least one sidewall 2 thereof, a recess 20 that continues in the tire circumferential direction. When a straight line drawn to be tangent to the outer outlines of the sidewall 2 and a bead part 3 in a tire meridian cross-section is defined as a tangential line L1, a point at which the tangential line L1 comes in contact with the outer outline of the sidewall 2 is defined as a tangent point P1, a straight line that passes through a wind-up end of a carcass layer 4 and intersects perpendicularly with a body part 4a of the carcass layer 4 is defined as a normal L2, and a straight line that passes the tangent point P1 so as to intersect perpendicularly with the body part 4a of the carcass layer 4 is defined as a normal L3, the relation 0.10×(G1-17)≤A/(S+A)≤0.05×(G1-10) is satisfied among the area A of a region enclosed by the tangent L1 and the outer outlines of the sidewall 2 and the bead part 3, the area S of a region enclosed by the body part 4a, the normal L2, the normal L3, and the outer outlines of the sidewall 2 and the bead part 3, and the thickness G1 of a bead filler 6 as measured along the normal L2.
Provided are a method and a system that enable highly productive manufacture of an elongated tire member formed by joining a plurality of types of constitutive members, through reduction of variation in predetermined quality in the longitudinal direction. A step of conveying a tire member R in a longitudinal direction L by using a conveyor 2, while irradiating, by an X-ray inspection device 3, a predetermined length range C with an X-ray from a surface side of the tire member R to obtain image data D based on X-ray permeability is continuously carried out to obtain the image data D of the predetermined length range C that is continuous in the longitudinal direction L without any gap. The mass of the tire member R and the magnitude of variation in a distribution of a constitutive member M1 formed from unvulcanized rubber having a greater content of a particular component in the longitudinal direction L are calculated by a calculation device 4 on the basis of the color density in each image data D. The variation is reduced by controlling rotating speed of a screw 8s installed inside at least one extruder 8 by a control device 9 on the basis of the magnitude of the variation.
B29C 48/25 - Component parts, details or accessories; Auxiliary operations
B29C 48/395 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
Provided are an accommodation body with a functional component and a tire that can prevent detachment of the functional component during travel and prevent damage of the accommodation body that accommodates the functional component. An accommodation body 1 with a functional component comprises a functional component 20 for acquiring tire information and an accommodation body 10 that accommodates the functional component 20. The accommodation body 10 comprises: a bottom portion 11 that is fixed to a tire inner surface; a crown portion 12 that protrudes from the bottom portion 11; an accommodation space 13 formed by the bottom portion 11 and the crown portion 12; and an opening 14 that communicates to the accommodation space 13. An inclination angle θ2 of the crown portion 12 with respect to the bottom portion 11, measured on an outer wall side of the crown portion 12 in a state in which the functional component 20 is accommodated in the accommodation space 13, is smaller than an inclination angle θ1 of the crown portion 12 with respect to the bottom portion 11, measured on the outer wall side of the crown portion 12 in a state in which the functional component 20 is not accommodated in the accommodation space 13. An angle difference thereof (θ1 - θ2) is in a range from 5° to 15°.
Provided are a functional part assembly which makes it possible to prevent detachment of functional parts and improve damage resistance, and a tire comprising the functional part assembly. A functional part assembly 10 comprises a functional part 20 having functionality for detecting the state of a tire, and a support body 30 that accommodates the functional part 20 and is attached to the inner surface of the tire. The functional part 20 is affixed inside an accommodation section 31 of the supporting body 30 by using a locking part 40 formed of a pair consisting of a protruding part 41 and a receiving part 42. One of either the protruding part 41 or the receiving part 42 is provided on a side wall 30A of the accommodation section 31, and the other of the protruding part 41 or the receiving part 42 is provided on a portion of the functional part 20 that is in contact with the side wall 30. When the functional part 20 is not accommodated in the support body 30, the ratio h/H of the height h of the functional part 20 side of the locking part 40 to the height H of the support body 30 side of the locking part 40 satisfies the relationship 1.00 < h/H ≤ 1.40.
Provided are a container with a functional component and a tire in which the internal shape of the container housing the functional component is devised so that the functional component can accurately acquire tire interior information. A container with a functional component comprises a functional component 20 for acquiring tire information and a container 10 that contains the functional component 20, wherein the functional component 20 has a housing 21 that houses an electronic component 22 and a film-form piezoelectric element 24 fixed to a wall surface of the housing 21, at least one protrusion 15 is formed on the inner surface of the container 10, and at least part of the protrusion 15 and the piezoelectric element 24 are in contact directly or indirectly with a wall surface of the housing 21 therebetween, in a state in which there is no load and the functional component 20 is contained within the container 10.
Provided are an accommodating body with a functional component, and a tire, in which an internal shape of the accommodating body, for accommodating the functional component, is devised such that the functional component can accurately acquire tire interior information, while cracking of a projection formed on an inner surface of the accommodating body is suppressed. This accommodating body having a functional component comprises a functional component 20 for acquiring tire information, and an accommodating body 10 for accommodating the functional component 20, wherein: the functional component 20 has a housing 21 and a piezoelectric element 24 fixed to a wall surface of the housing 21; a protuberance 15 is formed on an inner surface of the accommodating body 10; in a no-load condition in which the functional component 20 is accommodated in the accommodating body 10, the protuberance 15 and the piezoelectric element 24 are in contact with one another either directly, or indirectly, sandwiching the wall surface of the housing 21; and in a top view of the protuberance 15, a surface area of a bottom-most surface 15y of the protuberance 15 is greater than a surface area of an uppermost portion 15x of the protuberance 15, and an outer edge of the uppermost portion 15x of the protuberance 15 is inward of an outer edge of the bottom-most surface 15y of the protuberance 15.
Provided is a tire rubber composition by which snow performance, wet performance, and wear resistant performance can be improved, and these performances can be demonstrated with a high degree of balance. The tire rubber composition is obtained by blending a white filler in an amount of 30 parts by mass or more and less than 100 parts by mass and a thermoplastic resin in an amount of 15-80 parts by mass with respect to 100 parts by mass of a diene rubber containing: 55 mass% or more of a styrene-butadiene copolymer having a glass transition temperature of -55°C or more; and 5 mass% or more of a butadiene copolymer. In a mixture obtained by blending the diene rubber and the thermoplastic resin at a mass ratio of 1:1, the difference Tga-Tgm between a theoretical value Tga of the glass transition temperature of the mixture, which is calculated from the glass transition temperatures of the diene rubber and the thermoplastic resin, and a measured value Tgm of the glass transition temperature of the mixture is 10°C or more.
Provided is a rubber composition for tires which is excellent in wear resistance and wet performance, and which is configured to reduce rolling resistance and temperature dependency. The rubber composition for tires is obtained by blending, in 100 parts by mass of a diene rubber comprising a 55 mass% or more solution-polymerized styrene-butadiene rubber having a glass transition temperature of -50°C, at least 30 parts by mass but less than 100 parts by mass of a white filling agent, at least 15 parts by mass of a thermoplastic resin, and, with respect to the mass of the white filling agent, a 3-20 mass% silane coupling agent represented by a specific average composition formula. The rubber composition is characterized in that, with respect to a mixture of the diene rubber and the thermoplastic resin at a mass ratio of 1:1, a difference, Tga-Tgm, is 10°C or less, said difference being between: a theoretical value Tga of the glass transition temperature of the mixture, calculated from the glass transition temperatures of the diene rubber and the thermoplastic resin; and a measured value Tgm of the glass transition temperature of the mixture.
The purpose of the present invention is to provide: a polyurethane composition having exceptional pot life, curability under room-temperature conditions and in open systems, foaming resistance, hardness after curing, abrasion resistance, and water resistance; and a marine hose. The present invention relates to: a room-temperature-curable polyurethane composition containing a urethane prepolymer that has an isocyanate group and is formed from a polyether polyol and tolylene diisocyanate, a curing agent that contains trimethylene-bis(4-aminobenzoate) and/or 2-methylpropyl 3,5-diamino-4-chlorobenzoate, and adipic acid that serves as a catalyst, the composition being such that the molar ratio of isocyanate groups in the urethane prepolymer and amino groups in the curing agent is 0.90-2.00, and the content value for trimethylene-bis(4-aminobenzoate) and/or 2-methylpropyl 3,5-diamino-4-chlorobenzoate is 95-100 mol% of the total curing agent; and a marine hose formed using said composition.
C08G 18/76 - Polyisocyanates or polyisothiocyanates cyclic aromatic
F16L 1/12 - Laying or reclaiming pipes on or under water
F16L 11/133 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting buoyant
The purpose of the present invention is to provide a rubber composition for tires that has excellent breaking strength, rolling resistance, and wear resistance. The present invention provides a rubber composition for tires that contains a diene rubber and a plasticizer X that has a glass transition temperature of -90°C or lower. The 1H NMR spectrum of the plasticizer X satisfies indices I and II. Index I: 0≤(c÷(a+b+c))×100≤0.1. Index II: 0
Provided are a method for determining specifications of fiber reinforced material that has excellent fatigue resistance to ensure sufficient pressure resistance while maintaining appropriate expansion characteristics of a marine hose, and a method of manufacturing a marine hose. The present invention makes fiber cords 10 constituting a fiber-reinforced material 9 having a cord fabric structure to a specification in which three or four polyester filaments 10a are twisted, sets a twist factor K of the fiber cords 10 between 1900 and 2900 inclusive, grasps in advance correlations R between a predetermined elongation percentage E2 of each of a plurality of types of fiber cords 10 of different specifications and a hose elongation percentage E1 of each marine hose 1 in which the fiber-reinforced material 9 constituted by the respective fiber cords 10 is embedded as reinforcement layers 4A, 6A, the hose elongation percentages E1 being measured by a predetermined expansion test, sets a threshold Th for the predetermined elongation percentage E2 on the basis of a standard value of the hose elongation percentage E1 in the predetermined expansion test and the correlations R, and sets the predetermined elongation percentage E2 of the fiber cords 10 for use as the reinforcement layers 4A, 6A to be equal to or less than the threshold Th.
B32B 5/24 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer
F16L 11/133 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting buoyant
F16L 23/12 - Flanged joints specially adapted for particular pipes
D03D 15/283 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
D03D 15/50 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
Provided is a tire that can achieve dry performance, wet performance, and snow performance at high levels. A tire according to the present invention has a plurality of main grooves and a plurality of land parts. At least one main groove 10 of the plurality of main grooves is set such that a groove wall angle β toward the inner side of a vehicle is smaller than a groove wall angle α toward the outer side of the vehicle. The plurality of land parts includes: a center land part 20 positioned on the tire equator CL; a pair of intermediate land parts 30; and a pair of shoulder land parts 40. Shoulder lug grooves 42, which are formed in at least one shoulder land part 40, are in communication with the main groove 10. Each of the intermediate land parts 30 has: a plurality of intermediate lug grooves 32 that each have one end part which opens to the main groove 10 and the other end part which terminates in the intermediate land part 30; a plurality of first sipes 33A that each have one end part which opens to the main groove 10 to which the intermediate lug groove 32 opens and the other end part which opens to the intermediate lug groove 32; and a plurality of second sipes 33B that each have one end part which opens to the main groove 10 positioned on the opposite side from the main groove 10 to which the intermediate lug groove 32 opens and the other end part which opens to the intermediate lug groove 32. Each of the first sipes 33A and the second sipes 33B has a chamfered part 34 only on one of the leading-side edge and a trailing-side edge.
The present invention provides a production method and device for a curved resin pipe which make it possible to more reliably correct thickness deviations in a curved section when producing a curved resin pipe via resin injection molding that uses an assist material. An inner curve part 14a and/or an outer curve part 14b of a pre-selected curved section 12 of a cavity 11 which is formed in a mold 10 is configured from a temperature-adjustable piece section 15. After molten resin R is injected into the cavity 11 from an injection molding device 8, the temperature of the piece section 15 is controlled by a control unit 17 such that the inner curve part 14a has a lower temperature than the outer curve part 14b, and an assist material S is injected into the cavity 11 from an assist material injection unit 9 and is passed through the cavity 11 so as to form a pipe path 1a. The resin R remaining in the cavity 11 is cured to produce a curved resin pipe 1.
B29C 33/02 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor with incorporated heating or cooling means
B29C 33/38 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor characterised by the material or the manufacturing process
B29C 33/42 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
Provided are a highly versatile and low-cost detection device and method whereby it is possible to efficiently detect the occurrence of failure in steep angle conveyor belts. An embedded body 2 embedded in a steep angle conveyor belt 17 has a passive IC tag 3, and a linear detection element 7 that is connected to the IC tag 3 to form a loop circuit 9. The loop circuit 9 is extended to the joint between a base belt 18 and a cleat 23 or a flange 24 (portion M to be detected), and a transmission radio wave W1 is transmitted from a detector 10 to the IC tag 3. Using the information from the IC tag 3 transmitted to the detector 10 by a return radio wave W2 transmitted from the IC tag 3 in response to the transmission radio wave W1, a calculation section 13 determines whether or not the loop circuit 9 is energized. On the basis of the determination result, the occurrence of a failure in the portion M to be detected where the loop circuit 9 is embedded is detected.
B65G 15/40 - Belts or like endless load-carriers made of rubber or plastics formed with joints facilitating troughing
B65G 15/42 - Belts or like endless load-carriers made of rubber or plastics having ribs, ridges, or other surface projections
B65G 43/02 - Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load- carriers, e.g. for interrupting the drive in the event of overheating
55.
WEAR DETECTION DEVICE AND METHOD FOR CONVEYOR BELT
Provided are a wear detection device and a method enabling efficient grasping of a degree of wear on a surface of a conveyor belt with high versatility at low cost. Embedded bodies 2 embedded at intervals in a conveyor belt 17 in a longitudinal direction each include: a passive-type IC tag 3 arranged at one end portion in a width direction of the conveyor belt 17; a linear detection element 7 that is connected to the IC tag 3 and extends from the one end portion to the other end portion in the width direction of the conveyor belt 17 to form a loop circuit 9. An embedding depth from the surface of the conveyor belt 17 of the loop circuit 9 is set in advance, and a transmission electric wave W1 is sent from a detector 10 toward the IC tag 3. Using information from the IC tag 3 transmitted to the detector 10 by a response electric wave W2 sent from the IC tag 3 in response to this transmission electric wave W1, an arithmetic operation unit 13 determines whether or not the loop circuit 9 is energized. On the basis of a result of this determination, a degree of wear on the surface of the conveyor belt 17 within a range where the loop circuit 9 is embedded is grasped.
B65G 43/02 - Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load- carriers, e.g. for interrupting the drive in the event of overheating
56.
DEVICE AND METHOD FOR DETECTING LONGITUDINAL TEAR IN CONVEYOR BELT
Provided are a detection device and method whereby it is possible to accurately detect the presence or absence of a longitudinal tear in a conveyor belt, while achieving high versatility and low cost. Embedded bodies 2 embedded at intervals in the longitudinal direction in a conveyor belt 17 each comprise a passive IC tag 3 disposed at one width-direction end of the conveyor belt 17, and a linear detection element 7 that is connected to the IC tag 3, extends from one end to the other width-direction end of the conveyor belt 17, and forms a loop circuit 9. Transmitted radio waves W1 are emitted from a detector 10 toward the IC tags 3. Information from the IC tags 3 transmitted to the detector 10 by reply radio waves W2 emitted from the IC tags 3 in response to the transmitted radio waves W1 is used to determine, using a computation unit 13, whether the loop circuits 9 are energized. Whether a longitudinal tear was generated in the conveyor belt 17 in the range where the loop circuits 9 are embedded is detected on the basis of the determination result.
B65G 43/02 - Control devices, e.g. for safety, warning or fault-correcting detecting dangerous physical condition of load- carriers, e.g. for interrupting the drive in the event of overheating
The present invention provides a solid tire and a method for manufacturing the same, where the solid tire comprises RFID tags for product identification and good response accuracy can be exhibited while ensuring the effect of protecting the RFID tags. A solid tire 10 comprises a tread rubber layer 1 on a tread side and a base rubber layer 2 on a rim side, with a side surface S extending in the radial direction of the tire from the tread rubber layer 1 to the base rubber layer 2, wherein RFID tags 11 are embedded inside the solid tire 10 and the RFID tags 11 are disposed near the side surface S. When forming an unvulcanized tire 10X by winding a rubber sheet 20 into multiple layers, the RFID tags 11 are inserted between layers of the rubber sheet 20 partway through the winding into multiple layers, or the RFID tags 11 and a coating layer 21 are overlaid and attached onto the side surface of the unvulcanized tire 10X, after which the unvulcanized tire 10X comprising the RFID tags 11 is vulcanized in a mold.
To provide a solid tire which is provided with an RFID tag for product identification and with which the protective effect of the RFID tag can be sufficiently ensured, and a method for manufacturing the same. In a solid tire 10 having a tread rubber layer 1 on the tread side and a base rubber layer 2 on the rim side, the JIS-A hardness of the base rubber layer 2 is 80 or more, and an RFID tag 11 is embedded in the base rubber layer 2. When a rubber sheet 20 is wrapped in multiple layers to form an unvulcanized tire 10X, the RFID tag 11 is inserted between the layers of the rubber sheet 20 partway through the multi-layer wrapping, or the RFID tag 11 and a coating layer 21 are superimposed and adhered on a side surface of the unvulcanized tire 10X, after which the unvulcanized tire 10X including the RFID tag 11 is vulcanized in a mold.
Provided is a pneumatic tire with which durability at high speeds, handling stability at high speeds, and shock burst resistance can all be achieved to a high degree while lightening the tire weight by reducing the number of carcass layers. In this pneumatic tire comprising a single carcass layer 4 and a tread 1 formed by a cap tread layer 11 and an undertread layer 12: the undertread layer 11 is formed from a rubber composition having a hardness of 60 to 65 at 20°C, a tensile stress of 2.0 MPa to 4.0 MPa at 100% elongation at 100°C, and a product of tensile strength at 100°C and elongation at break at 100°C equal to or greater than 2000; the carcass layer 4 is formed from organic fiber cord with an elongation rate of 5.5% to 8.5% and an elongation at break of 20% to 30% at 1.5 cN/dtex load on the inner circumference of the belt layer; and the product A = D × Ec, which is the product of the number of implanted cords Ec and the conditioned-weight fineness D per carcass cord, is set to 1.8 × 105dtex/50 mm to 3.0 × 105 dtex/50 mm.
B60C 9/08 - Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship the cords extend transversely from bead to bead, i.e. radial ply
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B60C 9/00 - Reinforcements or ply arrangement of pneumatic tyres
B60C 9/22 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
B60C 11/00 - Tyre tread bands; Tread patterns; Anti-skid inserts
Provided is a pneumatic tire that employs PET fiber cords in a belt cover layer to reduce road noise, and has improved high-speed steering stability, low rolling resistance, and high-speed durability, and is capable of achieving a better balance between these properties. This pneumatic tire comprises a belt reinforcement layer 8. A tread part 1 of this pneumatic tire includes a cap tread layer 11 and an under-tread layer 12. Cover cords included in the belt reinforcement layer 8 are made of polyethylene terephthalate fiber cords having a stretch rate of 2.0-4.0% in the presence of a load of 2.0 cN/dtex at 100°C. The under-tread layer 11 is made of a rubber that is formed of a rubber composition containing 35-60 parts by mass of carbon black having a CTAB adsorption specific surface area of less than 70 m2/g, and 3-30 parts by mass of silica having a CTAB adsorption specific surface area of 180 m2/g, with respect to 100 parts by mass of rubber components. The hardness of the rubber is 60-65 at 20°C. The tensile stress of the rubber is 2.0-4.0 MPa when the rubber is elongated by 100% at 100°C. The product of the tensile strength at 100°C and the elongation at break at 100°C of the rubber is at least 2000.
B60C 11/00 - Tyre tread bands; Tread patterns; Anti-skid inserts
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B60C 9/00 - Reinforcements or ply arrangement of pneumatic tyres
B60C 9/08 - Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship the cords extend transversely from bead to bead, i.e. radial ply
B60C 9/22 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
DETERMINATION SPACE CREATION METHOD, DETERMINATION SPACE UPDATE METHOD, ROAD SURFACE STATE DETERMINATION METHOD, DETERMINATION SPACE CREATION DEVICE, AND ROAD SURFACE STATE DETERMINATION DEVICE
A method according to the present invention is for, by using information on the road surface state of a road surface on which a vehicle is traveling and output waveform data obtained by measuring a change in physical quantity of tires in the vehicle during traveling, creating a determination space for determining the road surface state from the output waveform data. The method involves: acquiring the output waveform data for a plurality of different road surface states and traveling conditions at a time of measuring the output waveform data (S11); classifying the output waveform data into a plurality of groups on the basis of the traveling conditions (S12); performing machine learning for each of the groups using training data in which information on the road surface states are associated with the output waveform data (S13, 14, 15); and thereby creating a determination space corresponding to each of the groups (S16). Accordingly, this method makes it possible to determine the road surface state with high accuracy.
Provided is a rubber composition for tires which attains both low rolling resistance and wear resistance. The rubber composition for tires is one obtained by incorporating 30-200 parts by mass of silica into 100 parts by mass of a diene-based rubber including 30-70 mass% modified styrene/butadiene rubber having an alkoxysilyl group, and is characterized in that the modified styrene/butadiene rubber has a vinyl content of 10-45 mass% and, when examined by gel permeation chromatography, gives a unimodal molecular-weight-distribution curve and has a molecule-weight distribution (PDI) less than 1.7. The rubber composition for tires is further characterized by having a glass transition temperature of -50°C or lower.
Provided is a rubber composition that is for a tire and that achieves wear resistance and also has dry-grip performance and steering stability in a wide temperature range. The present invention is a mixture that is obtained by blending a total of at least 100 parts by mass of a white filler and carbon black, 0.3-10 parts by mass of a cyclic polysulfide, and 8-50 parts by mass of a thermoplastic resin, to 100 parts by mass of a diene rubber containing at least 30 mass% of a styrene-butadiene rubber having a glass transition temperature of at least -40°C, and that is characterized in that: the diene rubber and the thermoplastic resin are mixed at a mass ratio of 1:1; and the difference Tga-Tgm between a theoretical value Tga of the glass transition temperature of the mixture calculated from the glass transition temperatures of the diene rubber and the thermoplastic resin, and a measured value Tgm of the glass transition temperature of the mixture, is at least 10°C.
Provided is a rubber composition for tires with which both wet performance and wear resistance are attained. The rubber composition for tires has at least 30 mass parts of silica blended into 100 mass parts of a diene rubber that contains 30-90 mass% of an alkoxysilyl group-bearing modified styrene-butadiene rubber, the rubber composition for tires being characterized in that, when the modified styrene-butadiene rubber is measured using gel permeation chromatography, the molecular weight distribution curve is unimodal and the molecular weight distribution (PDI) is less than 1.7, and in that the glass transition temperature of the rubber composition for tires is higher than -50°C.
Provided is a door opening/closing mechanism that can be easily installed in an aircraft lavatory unit of an existing aircraft, and is advantageous for prevention of Covid-19 infection onboard. A powered door opening mechanism 34 moves a door 20 from a closed position to an open position. The powered door opening mechanism 34 comprises: non-contact sensors 36 provided inside and outside a lavatory 1002 and which detect a part of a human body; a member 40 to be engaged that is provided on the door 20 and extends above the door 20; an engaging member 42 provided at a position above the door 20 in the lavatory 1002, capable of engaging, from the door 20 side, with the member 40 to be engaged from the closed position of the door 20 to the open position of the door 20, and being in an open state in a direction away from the door 20; and a belt pulley mechanism 46A that moves the engaging member 42 in a direction away from a doorway 1212 by driving an electric motor 66 using a detection signal from the non-contact sensor 36, and moves the door 20 from the closed position to the open position via the member 40 to be engaged.
E05F 15/74 - Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects using photoelectric cells
E05F 15/605 - Power-operated mechanisms for wings using electrical actuators using rotary electromotors for folding wings
E05F 15/627 - Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by flexible elongated pulling elements, e.g. belts, chains or cables
E05F 15/63 - Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by swinging arms
66.
DOOR OPENING/CLOSING MECHANISM IN LAVATORY UNIT FOR AIRCRAFT
Provided is a door opening/closing mechanism which can be easily installed in existing lavatory units for aircrafts, and which is advantageous for facilitating prevention of new coronavirus infection in an aircraft. An electric-powered door opening/closing mechanism 34 is provided which causes a door 20 to move from a blocking position to an open position. The electric-powered door opening/closing mechanism 34 is provided with non‐contact sensors 36 that are provided at the inside and the outside of a lavatory 1002 and detect a portion of a human body; an engagement counterpart member 40 that is provided to the door 20 and extends above the door 20; an engaging member 42 that is provided inside the lavatory 1002 at a position above the door 20, that is capable of engaging, from the door 20 side, with the engagement counterpart member 40 from the blocking position of the door 20 to the open position of the door 20, and that is open in a direction away from the door 20; and an actuator 44 that causes the engaging member 42 to move in a direction away from a doorway 1212 in accordance with detection signals from the non‐contact sensors 36, and causes the door 20 to move from the blocking position to the open position by means of the engagement counterpart member 40.
E05F 15/74 - Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects using photoelectric cells
Provided is a door opening and closing mechanism for an entrance of an aircraft lavatory unit advantageous in suppressing malfunction of a door and increasing convenience of use of a lavatory while preventing infection with COVID-19 in the aircraft. A power door opening mechanism 34 comprises a room-outside non-contact sensor 36A which is provided outside a lavatory 1002 and detects, in a non-contact manner, a motion of a person placing the hand, a human sensor 38 which detects existence of a person inside the lavatory 1002, an actuator 44 which moves a door 20, and a control unit 48 which controls the actuator 44. The control unit 38 moves the door 20 from a closed position to an open position by the actuator 44 when the detection by the room-outside non-contact sensor 36A is confirmed in a state in which the detection by the human sensor 38 is not confirmed.
E05F 1/14 - Closers or openers for wings, not otherwise provided for in this subclass spring-actuated for swinging wings with double-acting springs, e.g. for closing and opening or checking and closing
E05F 15/41 - Detection by monitoring transmitted force or torque; Safety couplings with activation dependent upon torque or force, e.g. slip couplings
E05F 15/74 - Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects using photoelectric cells
68.
ADHESIVE COMPOSITION FOR VULCANIZED RUBBER, AND TIRE
A purpose of the present invention is to provide an adhesive composition for vulcanized rubbers which has excellent adhesiveness. This adhesive composition for vulcanized rubbers comprises an organic polymer having an alkoxysilyl group, an epoxy resin having an aromatic hydrocarbon group, and a silane coupling agent, wherein the mass ratio of the content R of the organic polymer to the content E of the epoxy resin, R:E, is 95:5 to 50:50 and the content S of the silane coupling agent is 1.5-10 parts by mass per 100 parts by mass of the sum of the content R and the content E. Also provided is a tire obtained by bonding a vulcanized tire to a component with the adhesive composition for vulcanized rubbers.
C09J 201/10 - Adhesives based on unspecified macromolecular compounds characterised by the presence of specified groups containing hydrolysable silane groups
B60C 19/00 - Tyre parts or constructions not otherwise provided for
A pneumatic tire 1 comprises, for maintaining tire electrical resistance after travel: a pair of bead sections 10; at least one carcass layer 13 spanning the pair of bead sections 10; a belt layer 14 disposed to the side of the carcass layer 13 which is radially outward from the tire; and a tire inner surface rubber layer 20 constituting a tire inner surface 25, the tire comprising a linear conductive section 50 that continuously extends at least from the bead sections 10 to the belt section 14 and that is disposed to the tire inner surface rubber layer 20, wherein the linear conductive section 50 is exposed at least partially in an inner tire cavity side and has a volume resistivity of less than 1×10^8 [Ω·cm].
In order to maintain the electric resistance of a tire after travelling, this pneumatic tire 1 is provided with a pair of bead portions 10, at least one carcass layer 13 bridged over the pair of bead portions 10, a belt layer 14 disposed at the outer side of the carcass layer 13 in the tire radial direction, and a carcass inner-side rubber layer 20 disposed at the tire cavity side relative to the carcass layer 13, and is also provided with a linear conductive part 50 that extends continuously at least from each of bead portions 10 to the belt layer 14 and that is disposed in the carcass inner-side rubber layer 20. At least a portion of the linear conductive part 50 is disposed in the carcass inner-side rubber layer 20, and the volume resistivity of the linear conductive part is less than 1×10^8 [Ω·cm].
Provided is a fluid-conveying hose with which an electrical resistance value between ends of a hose when transferring a fluid between ships can be maintained in an appropriate predetermined range over a long period of time. Connecting fittings 2 are fixed to both ends of a hose body 3 formed by sequentially laminating an inner rubber layer 4, a reinforcing layer 6, and an outer rubber layer 5. The reinforcing layer 6 is constituted of a laminate of a reinforcing fiber layer 6a and an intermediate rubber layer 6b. Of the rubber forming the inner rubber layer 4, the outer rubber layer 5, and the intermediate rubber layer 6b, conductive rubber 7 having the smallest electrical resistance value per unit cross-sectional area unit length is extended in a spiral form with intervals d in the longitudinal direction of the hose. When a hose 1 is new and the hose body 3 is extended straight, the electrical resistance value between both ends of the hose measured in accordance with ISO 8031 is 100,000−600,000 Ω (inclusive).
F16L 11/127 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting electrically conducting
The present invention provides a marine hose fluid leakage detection system and a method for manufacturing the same that can improve the durability of the detector while securing the ease of fluid leakage check and the reliability of detection. A pressure sensor 15 and a passive IC tag 12 are accommodated in a pressure retention chamber 18c that is formed with a metal cylindrical base part 18a of a casing 18 provided on the surface of a marine hose 1 and a radio wave transmissible part 18b for sealing the upper end side of the base part 18a in a watertight manner, the pressure retention chamber 18c communicates with a communication tube 10 via a check valve 17 that allows only the flow of a fluid L from the communication tube 10 side to the pressure retention chamber 18c side, the IC tag 12 transmits detected pressure data to a radio wave reception unit 22b by means of a response radio wave W2 according to a transmitted radio wave W1 from a radio wave transmission unit 22a, three or more metal projection parts 19 that are projected upward from the radio wave transmissible part 18b are arranged, in a plan view, on the outer peripheral side of the radio wave transmissible part 18b so as to be spaced apart from each other in the circumferential direction, with the upper ends thereof being separated from each other.
F17D 5/06 - Preventing, monitoring, or locating loss using electric or acoustic means
G01M 3/04 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves
F16L 11/12 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
F16L 55/00 - Devices or appurtenances for use in, or in connection with, pipes or pipe systems
The present invention discloses a rubber composition that includes rubber, filler, a sulfur-containing silane coupling agent, and a vulcanization accelerator, the rubber including 30-60 parts by mass of NR and 40-70 parts by mass of BR, the filler including carbon black and silica, the CTAB specific surface area of the carbon black and the silica being 60-160 m2/g and 60-100 m2/g, respectively, the filler content being 55-75 parts by mass per 100 parts by mass of rubber, the amount of silica compounded with the filler (silica ratio) being 10 mass% or greater, and the amount of vulcanization accelerator compounded being 2.5-8 mass% relative to the silica.
Provided are a marine hose having favorable abrasion resistance and having a urethane layer of a desired thickness on the outermost peripheral surface, which can improve the productivity of the hose, and a method for manufacturing the same. A molding, in which a sheet-form material 11T made of a rubber composition containing a millable urethane polymer is laminated on a cylindrical outer peripheral surface in which cylindrical reinforcing layers 5, 6, 7 are embedded between a cylindrical unvulcanized inner surface layer 4 and a cover layer 9, is steam-vulcanized inside a vulcanizing can 14 to vulcanize a hose body 3, the sheet-form material 11T is formed into a urethane inner peripheral layer 11, a liquid material 12T made of a rubber composition containing a castable urethane polymer is applied to the outer peripheral surface of the urethane inner peripheral layer 11 and aged to form the liquid material 12T into a urethane outer peripheral layer 12, and a urethane layer 10 having a desired thickness and a layered structure, in which the urethane inner peripheral layer 11a and the urethane outer peripheral layer 12 are laminated in the stated order, is provided on the outer peripheral surface of the vulcanized hose body 3.
Provided is a flush switch that is for an aircraft lavatory unit comprising two types of flush switches, and that enables reduction in the number of component parts for the aircraft lavatory unit, and thus improves mounting work efficiency and advantageously facilitates light-weighting of the aircraft lavatory unit. A flush switch 28 comprises a contact-type first flush switch 32 which is operated by a push button 40 and a noncontact-type second flush switch 34 which has a human-body detection sensor. The first flush switch 32 and the second flush switch 34 are mounted to a single base member 30 and are covered by a single cover 36. Since the noncontact-type second flush switch 34 can be used, infectious disease prevention can be advantageously facilitated. Even in the case of failure of the noncontact-type second flush switch 34, convenience of users is advantageously ensured by use of the contact-type first flush switch 32.
The present invention increases the winding efficiency of conveyor belts. A packing cell 10A for conveyor belts, comprising: a pair of circular wooden side plate portions 12 that have a winding shaft insertion hole 2001 in the center and are arranged to face each other; and a cylindrical portion 14 that is attached to the outer circumference of the pair of side plate portions 12 and around which a conveyor belt is wound, wherein a metal winding shaft 16A is inserted into the winding shaft insertion hole 2001 when winding the conveyor belt. An opening 1202 is provided in each of the pair of side plate portions 12, and an insertion hole component 20A having the winding shaft insertion hole 2001 is fixed to an inner peripheral surface 1204 of the opening 1202. The insertion hole component 20A is formed from a material with better durability in supporting the winding shaft 16A than wood.
Provided is a winding drum coupling tool that can ensure stability during transportation and can be easily used in a use site. A winding drum coupling tool 30 couples together a plurality of winding drums 10 of a conveyor belt each provided with a hollow winding core part 12 having a winding shaft insertion hole 1202 penetrating therethrough and a pair of flange parts 14 provided at both ends in an axial direction of the winding core part 12. The coupling tool 30 comprises: a shaft member 34 that is inserted into the winding shaft insertion holes 1202 of the plurality of winding drums 10 arranged with an axis of the winding core part 12 aligned and that protrudes from lateral surfaces of the flange parts 14 of the winding drums 10 arranged at both ends; and a pair of contacting members 36 that is provided at both ends of the shaft member 34 and stops movement in mutually separated directions of the winding drums 10 arranged at both ends in a longitudinal direction of the shaft member.
B65D 85/671 - Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form
B65H 75/14 - Kinds or types of circular or polygonal cross-section with two end flanges
The present invention provides a hose for fluid transportation that is flexible and is excellent in kink resistance. This hose for fluid transportation is provided with an inner layer, a reinforcing layer, and an outer layer and is characterized in that: the inner layer includes an (A) layer, which comprises a thermoplastic resin composition ax comprising a thermoplastic resin ar-containing matrix am and a rubber ae- containing domain ad, a (B) layer, which comprises a thermoplastic resin composition bx comprising a matrix bm containing a thermoplastic resin b or br and a rubber be- containing domain bd, and a (C) layer, which comprises a rubber composition cx; the (A) layer is the innermost layer, the (B) layer is arranged on the outside of the (A) layer, and the (C) layer is arranged on the outside of the (B) layer; the ratio of 10% modulus M10 (AB) and 100% modulus M100 (AB) of a laminate containing the (A) layer and the (B) layer is above 0.5 and below 1.2; and the 100% modulus of the (C) layer < the 100% modulus of the (A) layer < the 100% modulus of the (B) layer is satisfied.
B32B 25/08 - Layered products essentially comprising natural or synthetic rubber comprising rubber as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
79.
CABLE PROTECTION MEMBER AND AIRCRAFT LAVATORY UNIT EQUIPPED WITH SAID CABLE PROTECTION MEMBER
Provided are a cable protection member advantageous for making cable protection work efficient and an aircraft lavatory unit equipped with the cable protection member advantageous for making the protection work of a cable used in the aircraft lavatory unit efficient and for protecting the cable. A cable protection member 56 has a cable insertion hole 58 into which a cable 38 is inserted and is constituted by a pair of protection member divided bodies 56A, 56B which are divided in the diameter direction of the cable insertion hole 58. The pair of protection member divided bodies 56A, 56B have diameter direction connection portions 63 that are connected in a mutually immovable manner in the diameter direction of the cable insertion hole 58 in a mutually connected state. The pair of protection member divided bodies 56A, 56B sandwich the cable 38 and then are connected to each other by the diameter direction connection portions 63, thereby enabling the cable 38 to be simply and reliably covered and protected by the cable protection member 56 and becoming advantageous for making the protection work of the cable 38 efficient.
The present invention provides: an assembled product in which the durability of a resin pipe at a connecting part between the resin pipe and a metal member is increased with the sealing performance of the connecting part being ensured; and a method for manufacturing the assembled product. In the outer peripheral surface of a resin cylindrical pedestal 4 protruding from the outer peripheral surface of a resin pipe 2, circumferential ribs 6a are formed integrally with the pedestal 4. An annular sealing member 9 is externally fitted to one end portion 8 of a metal member 7, and the one end portion 8 is inserted into and fixed to the pedestal 4, to thereby interpose the sealing member 9 between the outer peripheral surface of the one end portion 8 and the inner peripheral surface of the pedestal 4 such that the outer peripheral surface of the one end portion 8 presses the sealing member 9 to restrict a radially inward movement of the sealing member 9 and a movement thereof toward the back end side in the insertion direction of the one end portion, the inner peripheral surface of the pedestal 4 presses the sealing member 9 to restrict a radially outward movement of the sealing 9 member and a movement thereof toward the front end side in the insertion direction of the one end portion, and the circumferential ribs 6a are located in the outer peripheral surface of a part of the pedestal 4 in which the one end portion 8 is inserted.
F16L 47/24 - Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics for joints between metal and plastics pipes
F16L 21/02 - Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
The present invention provides a rubber composition for tires with which both wet gripping performance and wear resistance are attained. The present invention provides a mixture obtained by blending 0.5 to 50 parts by mass of a rosin resin with 100 parts by mass of a diene rubber, the diene rubber and the rosin resin being blended at a mass ratio of 1:1, wherein the mixture is characterized in that the difference Tga–Tgm is 5–50°C, where Tga is a theoretical value Tga for the glass transition temperature of the mixture calculated from the glass transition temperatures of the diene rubber and the rosin resin, and Tgm is the measured value of the glass transition temperature of the mixture.
C08L 9/00 - Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
C08F 293/00 - Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
C08F 297/04 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising vinyl aromatic monomers and conjugated dienes
C08L 53/02 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
Provided are: an assembly with which a metal flange is secured, without deviation, to a resin tube at a prescribed position, improving the durability of the resin tube at the site where the tube and flange are secured; and a method for manufacturing the same. A metal flange 2, which has protrusions/recesses on the surface of an insertion hole 3, is positioned at an insertion section 13c provided to a cavity body 13a of a mold 12. A molten resin R injected into the cavity 13 hardens to form a resin tube 5. The metal flange 2 is fitted to a securing groove 7 which is continuous to the entire circumference, in the circumferential direction, of the outer circumferential surface of the resin tube 5. The outer circumferential surface of the securing groove 7 enters into the protrusions/recesses on the surface of the insertion hole 3. A circumferential direction rib 9a, which abuts an end surface of the metal flange 2 and which has a greater diameter than the outer diameter of the resin tube 5 and is continuous to the entire circumference, in the circumferential direction, of the outer circumferential surface of the resin tube 5, is formed on at least one of the two ends in the longitudinal direction of the resin tube 5 of the metal flange 2.
F16L 23/024 - Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B29C 45/57 - Exerting after-pressure on the moulding material
F16L 11/04 - Hoses, i.e. flexible pipes made of rubber or flexible plastics
22SA of 100 to 300 m222SA/CTAB specific surface area value of 1.10 or less; 15 or more parts by mass of aluminium hydroxide; 5 or more parts by mass of an unmodified liquid styrene/butadiene copolymer rubber with a vinyl amount of 50 mass% or more; and 15 or more parts by mass of a tackifier resin with a softening point of 60°C to 180°C.
C08K 9/06 - Ingredients treated with organic substances with silicon-containing compounds
C08L 45/00 - Compositions of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring system; Compositions of derivatives of such polymers
Provided is a rubber composition for a heavy-load tire in which wear resistance and fuel economy performance are improved over conventional levels, and workability and tensile strength are improved, achieving both of these performances in a well-balanced manner. 40 or more parts by mass of silica is blended into 100 parts by mass of a diene rubber containing 60−85 mass% of isoprene rubber and 15−40 mass% of modified styrene-butadiene rubber having a glass transition temperature of less than −50°C, and a silane coupling agent is blended in an amount of 1−20 mass% with respect to the blended amount of silica.
Provided is a small-diameter tire capable of simultaneously achieving wet performance and fuel economy performance. The tire 1 comprises: a pair of bead cores 11, 11; a carcass layer 13 bridging between the bead cores 11, 11; a belt layer 14 disposed radially outside the carcass layer 13; and a tread portion. Moreover, the tire outer diameter OD [mm] is in a range of 200≤OD≤660 and the tire total width SW [mm] is in a range of 100≤SW≤400. A groove area ratio Aa [%] of the tread portion is in a range of 0.008≤Aa/OD≤0.150, and provided that a tire inner area of the tread portion is defined as an area of 48×(OD/SW)^(1/5) [%] from the end of the maximum ground contact width on the inner side of the tire at the time when the tire is mounted to a vehicle, a relationship between a groove area ratio Ai [%] of the tire inner area and the groove area ratio Ao [%] of a tire outer area, which is the area other than the tire inner area, is Ai
A rubber composition for tires is provided with which it is possible to improve snow performances, wet performances at ordinary temperature and in low-temperature environments, and aging resistance to thereby attain a high degree of balance among these performances. At least 50 parts by mass of a white filler is incorporated into 100 parts by mass of a diene-based rubber including 10-40 mass%, excluding 40 mass%, specific modified conjugated-diene-based polymer represented by formula (1), and rubber components other than the specific modified conjugated-diene-based polymer which are contained in the diene-based rubber have an average glass transition temperature regulated to -45°C or lower.
The present invention provides a small diameter tire which is capable of achieving both wear resistance performance and low rolling resistance performance. This tire comprises: a pair of bead cores; a carcass layer bridging the bead cores; a belt layer disposed radially outward of the carcass layer; and a tread part. The tire outer diameter OD [mm] is in the range of 200≤OD≤660, and the tire total width SW [mm] is in the range of 100≤SW≤400. A groove area ratio Aa of the tread part is in the range of 0.008≤Aa/OD≤0.150.
Provided is a small-diameter tire that can achieve both wet performance and wear resistant performance. This tire comprises: a pair of bead cores; a carcass layer spanning the bead cores; a belt layer disposed radially outside of the carcass layer; and a tread part. The tire outer diameter OD (mm) is in a range of 200 ≤ OD ≤ 660, and the tire total width SW (mm) is in a range of 100 ≤ SW ≤ 400. Furthermore, the groove area ratio Aa of the tread part is in a range of 0.008 ≤ Aa / OD ≤ 0.150, and the relationship between the groove area ratio Ace of a center region of the tread part and the groove area ratio Ash of a shoulder region of the tread part is Ace / Ash > 1.
This sealant material composition comprises (A) a rubber component, (B) a plasticizer, and (C) a crosslinking component. When a 1.2 mm-thick specimen comprising the sealant material composition is set on a parallel plate having a diameter of 8 mm and a shear stress of 3,000 Pa is applied for 60 minutes to the specimen along the rotation direction of the parallel plate, then the specimen has an amount of deformation of 1,000% or less.
Provided is a small-diameter tire capable of simultaneously achieving wear resistance performance and noise performance. The tire 1 comprises: a pair of bead cores 11, 11; a carcass layer 13 bridging between the bead cores 11, 11; a belt layer 14 disposed radially outside the carcass layer 13; and a tread portion. Moreover, the tire outer diameter OD [mm] is in a range of 200≤OD≤660 and the tire total width SW [mm] is in a range of 100≤SW≤400. A groove area ratio Aa [%] of the tread portion is in a range of 0.008≤Aa/OD≤0.150, and provided that a tire inner area of the tread portion is defined as an area of 48×(OD/SW)^(1/5) [%] from the end of the maximum ground contact width on the inner side of the tire at the time when the tire is mounted to a vehicle, a relationship between a groove area ratio Ai [%] of the tire inner area and a groove area ratio Ao [%] of a tire outer area, which is an area other than the tire inner area, is Ai>Ao.
The present invention addresses the problem of providing a rubber composition having excellent filler dispersibility. The rubber composition according to the present invention contains a rubber component containing at least 10 mass% of a modified diene rubber, and at least one filler selected from the group consisting of silica and carbon black. The modified diene rubber is a diene rubber modified by a complex of a nitrogen-containing aromatic compound and a boron compound having a B-H bond. The proportion of the complex with respect to repeating units derived from the diene of the diene rubber is 0.01-2 mol%.
A rubber composition for tires is provided with which it is possible to improve the dry and wet performances and satisfactorily maintain or improve the wear resistance to thereby attain a high degree of balance among these performances. One or more fillers and a resin are incorporated into a diene-based rubber comprising 40 mass% or more specific modified conjugated-diene-based polymer represented by formula (1), so that the total amount of the fillers is 75 parts by mass or more per 100 parts by mass of the diene-based rubber and the mass ratio of the resin to the specific modified conjugated-diene-based polymer is 1/10 to 1/2.
Provided is a pneumatic tire comprising a belt reinforcing layer formed of organic fiber cords wherein a reduction in weight and a reduction in rolling resistance of the tire can be achieved while improving the durability of the tire. In a tread portion 1, a belt layer 7 arranged on the outer circumferential side of a carcass layer is formed of monofilament wires having a wire diameter of 0.30 mm to 0.45 mm, a belt reinforcing layer 8 arranged on the outer circumferential side of the belt layer 7 is formed of belt reinforcing cords made of polyethylene terephthalate fibers and having an intermediate elongation of 2.0% to 4.0% under a load of 2.0 cN/dtex, and circumferential portions of strips S in which the belt reinforcing cords 8c are aligned are arranged apart from each other in the tire width direction.
B60C 9/22 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
B60C 9/00 - Reinforcements or ply arrangement of pneumatic tyres
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
94.
MULTILAYER BODY, METHOD FOR PRODUCING MULTILAYER BODY, AND TIRE
The present invention addresses the problem of providing: a multilayer body of vulcanized rubbers, the multilayer body exhibiting excellent adhesion stability; a method for producing this multilayer body; and a tire which comprises this multilayer body. A multilayer body according to the present invention is sequentially provided, in the following order, with a first layer that is formed of a vulcanized rubber, a bonding layer that is formed of a cured product of a cyanoacrylate adhesive, a second layer that is formed of a vulcanized rubber, and a sensor layer that comprises a sensor. With respect to this multilayer body, the softening point of the cured product is 71°C or higher.
B60C 5/14 - Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
B60C 19/00 - Tyre parts or constructions not otherwise provided for
B60C 9/00 - Reinforcements or ply arrangement of pneumatic tyres
B60C 9/18 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
B60C 9/22 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
96.
(METH)ACRYLIC ADHESIVE COMPOSITION, LAMINATE, AND TIRE
The purpose of the present invention is to provide a (meth)acrylic adhesive composition, a laminate, and a tire, in each case for which the vulcanized rubber-to-vulcanized rubber adhesiveness is excellent. The present invention is a two-part (meth)acrylic adhesive composition used to effect vulcanized rubber-to-vulcanized rubber adhesion. This two-part (meth)acrylic adhesive composition comprises a (meth)acryloyl group-bearing polymerizable monomer A, an elastomer component B containing an acrylonitrile·butadiene rubber or a chlorosulfonated polyethylene, a peroxide-type polymerization initiator C, a reducing agent D, and a filler E. The A comprises an alkyl (meth)acrylate ester monomer (A1), a hydroxy group-bearing (meth)acrylic monomer (A2), a (meth)acrylic acid monomer (A3), and a crosslinking (meth)acrylic monomer (A4). The mass ratio (B/A + B) of the total content of B to the sum of the total contents of A and B is at least 0.05. The present invention is also a laminate and tire that use the (meth)acrylic adhesive composition.
B32B 25/08 - Layered products essentially comprising natural or synthetic rubber comprising rubber as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
B32B 25/18 - Layered products essentially comprising natural or synthetic rubber comprising butyl or halobutyl rubber
The purpose of the present invention is to provide: a rubber composition for hoses which has excellent processability and gives rubbers excellent in terms of flame retardancy, wear resistance, and compression set; and a hose. This rubber composition for hoses comprises a rubber component comprising chloroprene rubber and butadiene rubber, sulfur, and an aromatic oil, wherein the content of the chloroprene rubber is 60 mass% or higher but less than 75 mass% with respect to the mass of the whole rubber component, the content of the butadiene rubber is higher than 25 mass% but not higher than 40 mass% with respect to the mass of the whole rubber component, the content of the sulfur is higher than 0.2 parts by mass but less than 2.5 parts by mass per 100 parts by mass of the rubber component, the content of the aromatic oil is 10 parts by mass or higher per 100 parts by mass of the rubber component, and the content of a silane coupling agent is 0-2 mass% with respect to the mass of the whole rubber component.
Provided is a hose that is for transportation of a refrigerant and that has excellent permeation resistance to a refrigerant transported in the hose and water outside the hose, and that is light weight, has good flexibility, and excellent handling properties. An inner surface layer 2 is formed of a thermoplastic resin or a thermoplastic resin composition having an island-sea structure including a matrix containing a thermoplastic resin and domains containing an elastomer. An outer surface layer 3 is formed of a thermoplastic resin composition having an island-sea structure including a matrix containing a thermoplastic resin and domains containing an elastomer. The oxygen permeability coefficient of the thermoplastic resin composition or the thermoplastic resin of the inner surface layer 2 is at most 0.05 cm3·mm/(m2·day·mmHg) at a temperature of 21°C and a relative humidity of 50%. The water vapor permeability coefficient of the thermoplastic resin composition of the outer surface layer 3 is at most 10.0 g·mm/(m2·24h) at a temperature of 60°C and a relative humidity of 100%. A reinforcement layer 4 is formed of organic fibers 4f having an inclination angle a that is set to 49-61°.
Provided is a hose for refrigerant transportation which has low permeability to gases including water vapor and chlorofluorocarbons and is flexible and lightweight. The hose for refrigerant transportation comprises at least an outer layer, a reinforcement layer, and an inner layer, and is characterized in that the outer layer includes a layer formed from a thermoplastic resin composition A and the inner layer includes a layer formed from a thermoplastic resin composition B, the thermoplastic resin composition A having a sea-island structure comprising a thermoplastic resin a, as a matrix, that includes a polyolefin-based resin and 51-85 mass% elastomer a, as domains, that includes a butyl-based elastomer, and the thermoplastic resin composition B having a sea-island structure comprising a thermoplastic resin b, as a matrix, that includes a polyamide-based resin and an elastomer b, as domains, that includes a butyl-based elastomer.
The purpose of the present invention is to provide a two-pack type curable adhesive composition which can attain both high fatigue resistance and high damping properties. The two-pack type curable adhesive composition comprises a main ingredient (A) comprising a urethane prepolymer (a1) having an isocyanate group and a hardener (B), wherein the main ingredient (A) and/or the hardener (B) contains fine polymer particles (X) having an average particle diameter of 0.01-200 μm, the fine polymer particles (X) having a glass transition temperature of -40°C to +80°C, the content of the fine polymer particles (X) being 5 mass% or higher with respect to the whole two-pack type curable adhesive composition. A cured object (P) obtained by curing the two-pack type curable adhesive composition has a loss tangent, as determined under the conditions of a temperature range of -40°C to +80°C and a frequency of 100 Hz, of 0.15 or greater. In a tensile-shear fatigue test according to JIS K6864, the cured object (P) does not break under the conditions of a stress amplitude of 2.8 MPa and up to 107 repetitions.
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