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 pneumatic tire including: a tread portion that extends in a tire circumferential direction and forms an annular shape; a pair of sidewall portions disposed on both sides of the tread portion; and a pair of bead portions disposed on an inner side in a tire radial direction of the sidewall portions, wherein an anti-insect layer having extermination characteristics or repellent characteristics with respect to insect pests is provided on an innermost surface of the pneumatic tire, or a repellent layer having repellent or extermination characteristics with respect to insect pests or small animals is provided on an outer surface of the pneumatic tire.
A01N 37/18 - Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N, e.g. carboxylic acid amides or imides; Thio-analogues thereof
A01N 47/16 - Carbamic acid derivatives, i.e. containing the group —O—CO—N; Thio-analogues thereof the nitrogen atom being part of a heterocyclic ring
A01N 47/34 - Ureas or thioureas containing the groups N—CO—N or N—CS—N containing the groups , e.g. biuret; Thio-analogues thereof; Urea-aldehyde condensation products
A01N 57/00 - Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
A01N 65/00 - Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B60C 5/00 - Inflatable pneumatic tyres or inner tubes
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
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
A fluid transport hose includes an inner layer including a thermoplastic resin composition containing a thermoplastic resin and an elastomer, a reinforcing layer disposed on an outer side of the inner layer, and an outer layer disposed on an outer side of the reinforcing layer, the thermoplastic resin composition having a storage modulus E′L at −40° C. and a storage modulus E′H at 80° C. satisfying Formulas (1), (2), and (3): E′L≤1500 MPa . . . (1), E′H≥40 MPa . . . (2), E′H/E′L≥0.05 . . . (3).
B32B 15/02 - Layered products essentially comprising metal in a form other than a sheet, e.g. wire, particles
B32B 15/082 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising acrylic resins
B32B 15/088 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising polyamides
B32B 15/09 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising polyesters
B32B 15/14 - Layered products essentially comprising metal next to a fibrous or filamentary layer
B32B 15/18 - Layered products essentially comprising metal comprising iron or steel
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.
An object of the present invention is to provide a rubber composition for hoses that can be a cured product having excellent hardness and elongation at break through only primary crosslinking. The present invention is a rubber composition for hoses including a ternary copolymer including each constituent unit of ethylene, a (meth)acrylic acid ester, and a carboxyl group-containing monomer including a carboxyl group, hexamethylenediamine carbamate, diazabicycloundecene, carbon black, and a plasticizer, the rubber composition having a content of the carbon black of from 77 to 87 parts by mass per 100 parts by mass of the ternary copolymer, a transmission oil pipe for automobiles formed by using the rubber composition for hoses, and a method for producing the same.
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
A sealant composition of the present invention includes a rubber component (A), a tackifier (B), and a plasticizer (C), in which the tackifier (B) has a softening point of 50° C. or higher, the plasticizer (C) has a dynamic viscosity at 40° C. of 2500 mm2/s or less, and a mass ratio of (C)/(B) of the plasticizer (C) to the tackifier (B) is 0.35 or more. Thus, the sealant composition can provide improved sealability, viscosity temperature dependency, and fluidity during storage of a tire.
A tire data processing device includes: a data acquisition unit to acquire surface shape data indicating a tire surface shape; a reference point setting unit to set a reference point having a radial direction value predetermined at each of a plurality of axial positions in a tire axial direction; a symmetrical reference point selection unit to select, from a plurality of the reference points, a pair of reference points disposed at symmetrical axial positions with respect to a tire equatorial plane; a reference point replacement unit to replace one or both of the pair of reference points such that radial direction values of the pair of reference points are coincident with each other; and a comparison result generation unit to compare the pair of reference points having the coincident radial direction value with a measurement point cloud of the surface shape data to generate a comparison result predetermined.
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
To improve quality of a radome using a cyanate ester resin for a skin layer. A radome is formed of a multilayer structure in which a plurality of skin layers are layered on a surface of a core member. The plurality of skin layers include a first fiber reinforced plastic layer containing the cyanate ester resin and a fiber material and a second fiber reinforced plastic layer containing an epoxy resin and a fiber material. The second fiber reinforced plastic layer is disposed at a position in contact with the surface of the core member. A proportion of a thickness of the second fiber reinforced plastic layer to a thickness of all of the skin layers is preferably 50% or less.
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, a tire outer diameter OD is in a range 200 mm≤OD≤660 mm. A total tire width SW is in a range 100 mm≤SW≤400 mm. A carcass layer is formed by layering two layers of carcass plies formed by covering organic fiber cords with coating rubbers. The organic fiber cords of the two layers of the carcass plies have cord angles in a range of 80 degrees or more and 100 degrees or less with respect to a tire circumferential direction. A tensile strength Tcs per a width of 50 mm of each of the two layers of the carcass plies (13A, 13B) is in a range 17 N/mm≤Tcs/OD≤120 N/mm with respect to the tire outer diameter OD.
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
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.
For a cap tread layer of a pneumatic tire, a rubber composition is used, which contains from 60 to 90 parts by mass of silica per 100 parts by mass of a diene rubber containing from 15 to 30 mass % of a natural rubber, from 40 to 70 mass % of a terminal-modified styrene-butadiene rubber having a vinyl content of from 35 to 45 mass %, and from 15 to 30 mass % of a modified butadiene rubber obtained by modifying an active terminal of a conjugated diene polymer with at least a hydrocarbyloxysilane compound, the total of these being 100 mass %. A hardness Hu of the undertread Layer and a hardness Hc of the cap tread layer satisfy the relationship of Hu>Hc. The hardness Hc is 63 or greater and 67 or less. A difference ΔH between the hardness Hu and the hardness Hc is 10 or more.
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.
The pneumatic tire of the present disclosure has a designated mounting direction with respect to a vehicle includes a plurality of circumferential main grooves on a tread surface of a tread portion. In a tire plan view, a groove center line of the circumferential main grooves is periodically displaced in a tire width direction as it extends in a tire circumferential direction, and a vehicle mounting inner side chamfered portion, a chamfer width of which is constant, is formed at an edge portion on a vehicle mounting inner side of the circumferential main groove.
A method of molding a sandwich panel includes a step of providing, on one or both surfaces of an (a) core material, a prepreg or the prepreg and an adhesive as a (b) skin material. The (a) core material is a super engineering plastic foam having a glass transition temperature of greater than 200° C. The (b) skin material contains: a (b-1) epoxy resin having an average molecular weight of 1300 or more or having a trishydroxymethane-type or cresol novolac-type structure and containing, in a total epoxy resin, an amount of 70 to 100 mass % of an epoxy resin that is semi-solid or solid; a (b-2) epoxy resin containing, in the total epoxy resin, an amount of 0 to 30 mass % of an epoxy resin that is liquid; and a (b-3) curing agent.
B32B 37/14 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
B32B 5/18 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
B32B 7/10 - Interconnection of layers at least one layer having inter-reactive properties
B32B 27/28 - Layered products essentially comprising synthetic resin comprising copolymers of synthetic resins not wholly covered by any one of the following subgroups
B32B 37/06 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
In a pneumatic tire, a bead core has end portions in a tirewidth direction formed as vertical lines along a tireradial direction. A length of the vertical lines is from 20% to 30% of a core height. In two adjacent bead core layers of first, second and third layers, the radial outer layer tireincludes two or more bead cores more than the radially inner layertire, and a misalignment amount between the bead wires each at an end portion on one side in the tirewidth direction is one-half of a bead wire thickness. A side on which the misalignment amount between the first and second layer bead wires is one-half of the thickness of the bead wire is opposite in the tirewidth direction to a side on which the misalignment amount between the second and third layer bead wires is one-half of the thickness of the bead wire.
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 rubber composition contains from 1 to 150 parts by mass of a mixed resin in 100 parts by mass of a diene rubber, where the mixed resin contains from 1 to 99 mass % of a hydrogenated styrene resin and from 99 to 1 mass % of an aromatic modified terpene resin.
A marine hose includes an inner reinforcing layer group a release layer, and an outer reinforcing layer group layered in order from an inner circumferential side between an inner surface rubber layer and a cover layer. The release layer is composed mainly of PVA and the water dissolution temperature is set to 50° C. or higher. When the inner surface rubber layer and the inner reinforcing layer group are damaged, the release layer is separated from the inner reinforcing layer group to form a gap therebetween. A fluid leaking from a flow path on an inner side of the inner surface rubber layer flows through the gap and a communication pipe and reaches a leak detector disposed on a hose surface.
F16L 11/08 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
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
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 rubber composition fora tire. Thirty parts by mass or more of carbon black having a CTAB adsorption specific surface area of 100 m2/g or less is blended into 100 parts by mass of a conjugated diene-based copolymer that includes from 20 mass % to 60 mass % of a first conjugated diene-based copolymer containing an isoprene component and from 40 mass % to 80 mass % of a second conjugated diene-based copolymer containing syndiotactic-1,2-polybutadiene. The syndiotactic-1,2-polybutadiene has a content of a crystallized component of 90% or more, a melting point of 130° C. or lower, and a glass transition temperature Tg of −20° C. or higher. A content a crystallized component in the second conjugated diene-based copolymer is 30 mass % or less.
A tire includes: main grooves provided in a tread; an intermediate land provided between a first main groove and a second main groove from a vehicle outer side; a first sipe extending through the intermediate land in a width direction; and a first lug groove open to the first main groove. The first sipe is bent in the intermediate land. The first sipe includes a first portion on one side of the bent portion in the width direction, inclined with respect to a circumferential direction, and open to the second main groove and a second portion on the other side of the bent portion in the width direction, inclined toward a side opposite to the first portion with respect to the circumferential direction, and open to the first main groove. Extension lines of the second portion and a groove center line of the first lug groove are substantially parallel.
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.
In a pneumatic tire including belt layers on an outer circumferential side of a carcass layer in a tread portion and a sealant layer made of an adhesive sealant provided on an inner surface of the tread portion, a width SW of the sealant layer, a width BW1 of an inner belt layer disposed adjacent to the carcass layer of the belt layers, and an actual ground contact width CW satisfy a relationship CW≤SW≤BW1.
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
A structural frame of an aircraft lavatory unit includes a first side wall facing a latitudinal aisle, and boarding entrances are located at both ends of the latitudinal aisle. A pump-type bottle that can discharge a disinfectant for hands and fingers is disposed at the first side wall at a height at which a passenger can push down a head portion thereof.
A mirror system includes a mirror that reflects the user. An infrared camera serving as a temperature detection unit detects the body surface temperature of the user located around the mirror. A body temperature estimation unit estimates the body temperature of the user based on the body surface temperature. When the body temperature of the user is equal to or higher than a predetermined temperature, a notification unit makes a notification of high body temperature warning information indicating that the body temperature of the user is equal to or higher than the predetermined temperature.
A61B 5/00 - Measuring for diagnostic purposes ; Identification of persons
G16H 10/60 - ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
A tire information detection device that detects tire information including at least one of wear, deformation, road surface state, ground contact state, presence/absence of failure, travel history, load state, or frictional coefficient, includes at least one detection unit disposed on a tire inner surface, a power supply unit to supply power to the detection unit, a position information detection unit to detect position information of the tire or a vehicle, an additional information acquisition unit to acquire additional information associated with the position information, a determination unit to determine whether a current position specified based on the position information is included in an area that satisfies a determination condition extracted from the additional information, and a control unit to control measurement of the detection unit based on a determination result from the determination unit.
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
In a pneumatic tire including a tread portion extending in a tire circumferential direction and having an annular shape, a pair of sidewall portions respectively disposed on both sides of the tread portion, a pair of bead portions each disposed on an inner side of the pair of sidewall portions in a tire radial direction, and a transponder embedded, a composite sheet that includes a dielectric forming a substrate and a conductor periodically disposed on the dielectric and functions as an artificial magnetic conductor is disposed on an inner side in a tire width direction of the transponder.
A pump-type bottle configured to discharge a disinfectant for hands and fingers is disposed at a wall portion in the aircraft cabin via an arrangement instrument at a height at which a passenger can push down a head portion thereof.
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.
An air pressure management device includes: a temperature conversion air pressure calculation unit that calculates a temperature conversion air pressure based on acquired temperature and air pressure of a tire; an air pressure decrease rate calculation unit that calculates an air pressure decrease rate from a change in the temperature conversion air pressure for a predetermined period, the rate indicating a declining trend of the air pressure; an air pressure decrease rate threshold value setting unit that sets an air pressure decrease rate threshold value corresponding to an acquired thermal history amount using a threshold value table, the threshold value table specifying the air pressure decrease rate threshold value associated with the thermal history amount regarding the tire; and a first determination unit that determines whether the air pressure is abnormal based on the calculated air pressure decrease rate and the set air pressure decrease rate threshold value.
G07C 5/10 - Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle, or waiting time using counting means or digital clocks
G07C 5/08 - Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle, or waiting time
67.
FUNCTIONAL-COMPONENT-ATTACHED ACCOMMODATING BODY AND TIRE
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.
In a pneumatic tire including a tread portion, a sidewall portion, a bead portion, a carcass layer mounted between a pair of bead portions, a plurality of main grooves extending in the tire circumferential direction and formed in the tread portion, and a plurality of land portions defined by the main grooves, the carcass layer includes a carcass cord formed of a polyester fiber cord, an elongation at break of the carcass cord is from 20% to 30%, and a groove area ratio SgA in a ground contact region of the tread portion is from 30% to 60%, a groove area ratio SgB in a center region of the tread portion satisfies a relationship 0.7≤SgB/SgA<1.1, and a depth of the main groove included in the center region is from 7 mm to 10 mm.
In a pneumatic tire provided with a carcass layer and a belt layer, the carcass layer is formed of an organic fiber cord having an elongation at break of 20% to 30%, an elongation in a sidewall portion under a load of 2.0 cN/dtex of 5.5% to 8.0%, and a product A = D × Ec of a fineness based on corrected mass D (unit: dtex/piece) and a count Ec (unit: piece/50 mm) of 1.8 × 105 dtex/50 mm to 3.0 × 105 dtex/50 mm, and the belt layer is formed of a steel cord having a stress at break of 3300 MPa or more and a product B = S x Eb of a cross-sectional area S (unit: mm2/piece), and a count Eb (unit: piece/50 mm) is from 6.0 mm2/50 mm to 7.5 mm2/50 mm.
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 9/04 - Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
In this tire, a distance GT from a tread profile at a tire ground contact edge to a tire inner surface, a distance GC from the tread profile at a position of 70% of a tire cross-sectional height to the tire inner surface, and a distance GD from the tread profile at a tire maximum width position to the tire inner surface satisfy conditions 1.00≤GC/GD≤1.10 and 3.00≤GT/GC≤4.00.
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
Provided is a rubber composition for a tire having excellent performance on snow, wet grip performance, and forming processability, while containing a large amount of silica. The rubber composition contains: in 100 parts by mass of a diene rubber containing from 25 to 50 mass % of a butadiene rubber, 50 parts by mass or more of a plasticizer component; from 120 to 180 parts by mass of silica; M1 parts by mass of 3-octanoylthio-1-propyltriethoxysilane; and M2 parts by mass of alkylsilane. (M1+M2), a total of the 3-octanoylthio-1-propyltriethoxysilane and the alkylsilane, is from 5 to 10 mass % with respect to the mass of the silica, and [M2/(M1+M2)], a ratio of the alkylsilane with respect to the total of the 3-octanoylthio-1-propyltriethoxysilane and the alkylsilane, is from 0.10 to 0.40.
Provided is a hydrogen-filling hose including an inner layer, a reinforcing layer, and an outer layer, the hydrogen-filling hose being characterized in that the inner layer includes a thermoplastic resin composition including a matrix that includes a polyamide resin and a domain that includes a modified styrene elastomer, the modified styrene elastomer content of the thermoplastic resin composition is 5-50 mass % of all polymer components in the thermoplastic resin composition, the reinforcing layer includes at least one layer that includes steel wire, and the outer layer includes a thermoplastic elastomer.
F16L 11/08 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
B32B 15/088 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin comprising polyamides
B32B 15/06 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of rubber
B32B 15/02 - Layered products essentially comprising metal in a form other than a sheet, e.g. wire, particles
B32B 15/18 - Layered products essentially comprising metal comprising iron or steel
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.
A pneumatic tire that includes a tread portion extending in a tire circumferential direction and having an annular shape, a pair of sidewall portions disposed on both tread portion sides, and a pair of bead portions each disposed radially on an inner side of the sidewall portions. A first filler rubber is disposed on an outer circumference of a bead core of each bead portion, a carcass layer mounted between the pair of bead portions, a plurality of belt layers disposed on an outer circumferential side of the carcass layer and turned up from a tire inner to a tire outer side around the bead core. A second filler rubber is disposed on an outer side of the carcass layer in a tire width direction, and a transponder is disposed between the carcass layer and the second filler rubber in contact with the second filler rubber.
Provided in a tread portion of a tire are main grooves, lug grooves intersecting the main grooves, and land portions defined by the main grooves. A specific one of the land portions includes, in a ground contact surface, sipes and narrow grooves intersecting the main grooves, the narrow grooves having a depth of 1.50 mm or less. When extending from one side toward another side in the width direction, the sipes and the narrow grooves have different directions extending in the circumferential direction in the central region and have the same direction extending in the circumferential direction in both edge regions on an outer side from the central region in the width direction. The specific one of the land portions includes at least one land portion on the outer side in the width direction.
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
84.
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.
A pneumatic tire includes a circumferential main groove extending in a tire circumferential direction, a land portion defined by the circumferential main grooves, and a sipe disposed in the land portion. The sipe is formed in a zigzag shape that has an amplitude in a width direction of the sipe while extending in a longitudinal direction of the sipe. A magnitude of the amplitude changes according to a position in a depth direction of the sipe. A depth of a maximum amplitude portion from an opening portion of the sipe in the depth direction of the sipe is located at a position 30% or more of a maximum depth of the sipe. The maximum amplitude portion is a portion where a magnitude of the amplitude is maximum.
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.
A pneumatic tire includes circumferential grooves, lug grooves, land portions defined by the circumferential grooves and the lug grooves, and a narrow groove in the land portions that extends in a circumferential direction. At least one of the circumferential grooves that defines the land portions in which the narrow groove is disposed has an amplitude in a width direction while extending in the circumferential direction to be formed in zigzag shape including long and short portions having relatively different lengths. The narrow groove has one or more bent portions where an extension direction changes in the land portions to include a long portion and a short portion having relatively different lengths. The long portion of the narrow groove has an inclination direction in the width direction with respect to the circumferential direction in a direction opposite to the long portion of the at least one of the circumferential grooves.
