A method for additive manufacturing includes: at a build tray arranged over a build window and containing a resin reservoir of a resin, heating the resin reservoir toward a target bulk resin temperature less than a heat deflection temperature of the resin in a photocured state; at a resin interface between a surface of the build window and the resin reservoir, heating an interface layer of the resin reservoir toward a target reaction temperature; and, in response to the resin reservoir exhibiting a first temperature proximal the target bulk resin temperature and to the interface layer exhibiting a second temperature proximal the target reaction temperature: at the resin interface, selectively photocuring a first volume of the resin to form a first layer of a build adhered to a build platform; and retracting the build platform away from the build window.
B29C 64/135 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified characterised by the energy source therefor, e.g. by global irradiation combined with a mask the energy source being concentrated, e.g. scanning lasers or focused light sources
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
A filament drive mechanism (100) for use with an additive manufacturing system (10) includes at least first and second drives (160, 170). Each drive includes a first rotatable shaft (110, 161) and a second rotatable shaft (172, 180) engaged with the first rotatable shaft (161, 172) in a counter rotational configuration. Each drive (160, 170) includes a pair of filament engagement elements (126, 166 and 178, 186), one on each rotatable shaft, and positioned on opposing sides of the filament path (218) with a gap therebetween so as to engage a filament provided in the filament path (218). The drive mechanism (100) includes a bridge follower (190) configured to rotatably couple the first drive (160) to the second drive (170) wherein one of the shafts (110, 172, 190) is a drive shaft configured to be driven by a motor at a rotational rate selected to advance the filament at a desired feed rate and to cause the other shafts to rotate at the same rotational rate, such that each pair of filament engagement teeth (126, 166 and 178, 186) will engage a filament in the filament path (218) and will coordinate to advance the filament while counter-rotating at the same rotational rate to drive the filament into a liquefier.
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
An additive manufacturing system including a base assembly and a tray assembly. The base assembly includes a build window, substantially transparent to electromagnetic radiation; a projection system configured to project electromagnetic radiation toward an upper surface of the build window; and a tray seat arranged around a perimeter of the build window. The tray assembly is configured to engage with the base assembly in an engaged configuration and includes: a tray structure defining a registration feature configured to engage the tray seat to locate an aperture proximal to the upper surface of the build window in the engaged configuration; and a separation membrane that is configured to laminate across the upper surface of the build window in response to an evacuation of gas from an interstitial region and configured to separate from the build window in response to injection of gas into the interstitial region.
B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
B29C 64/40 - Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof
B29C 48/23 - Articles comprising two or more components, e.g. co-extruded layers the components being layers with means for avoiding adhesion of the layers, e.g. for forming peelable layers
B28B 11/04 - Apparatus or processes for treating or working the shaped articles for coating
B29C 41/08 - Coating a former, core or other substrate by spraying or fluidisation, e.g. spraying powder
B29C 70/64 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only the filler influencing the surface characteristics of the material, e.g. by concentrating near the surface or by incorporation into the surface by force
4.
3D-PRINTED ORTHODONTIC SPLINT MADE OF CROSSLINKED POLYMERS
The present invention relates to an orthodontic splint made of a crosslinked polymer, wherein the crosslinked polymer has a glass transition temperature Tg, determined by means of dynamic-mechanical analysis at a frequency of 1/s DMA as peak tan d, of = 25°C and = 60°C, a modulus of elasticity, determined by means of dynamic-mechanical analysis as the storage modulus E' at a frequency of 1/s at 35°C, of = 500 MPa and = 4000 MPa, and a loss factor tan d, determined by means of dynamic-mechanical analysis at a frequency of 1/s at 35°C, of = 0.08. The invention further relates to a process for producing such splints.
Thermoset compositions and methods for forming three-dimensional articles via an additive fabrication process, and articles made therefrom are disclosed herein. In an embodiment, a composition comprises a first network-forming component comprising a first oligomer comprising a backbone and having at least 2 polymerizable groups, one or more first network monomers, and a first network initiator. The backbone of the first oligomer comprises a polyepoxide based on Bisphenol A, F, or S, a polyepoxide based on hydrogenated Bisphenol A, F, or S, a polycarbonate, or a polyimide. The composition may further comprise a second network-forming component.
C08L 51/08 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
B29C 64/124 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
C08F 290/00 - Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
6.
MULTIPLE AXIS ROBOTIC ADDITIVE MANUFACTURING SYSTEM AND METHODS
A multiple axis robotic additive manufacturing system (100) includes a robotic arm (102) movable in six degrees of freedom. The system includes a build platform (106) movable in at least two degrees of freedom and independent of the movement of the robotic arm (102) to position the part (110) being built to counteract effects of gravity based upon part geometry. The system (100) includes an extruder (104) mounted at an end of the robotic arm (102). The extruder is configured to extrude at least part material with a plurality of flow rates, wherein movement of the robotic arm (102) and the build platform (106) are synchronized with the flow rate of the extruded material to build the 3D part (106).
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
An additive manufacturing system (10) includes a build chamber with at least first and second side walls and top and bottom walls. A central deformable, thermal insulator (30) has a first edge (32) and a second edge (33), where a print head carriage (31) is movably retained within the central deformable thermal insulator (30) and is configured to move print heads (204, 206) within a build plane of the build chamber under control of a gantry. The system (10) includes first and second dynamic thermal barriers (12, 14) each having a length between a proximal edge (16, 116) and a distal edge (18, 118) wherein the proximal edge (16, 116) is configured to be secured to the central deformable insulator (30) and a distal edge (18, 118) is configured to be movably retained to the build chamber such that as the print head carriage (31) moves laterally across the build plane, each dynamic thermal barrier (12, 14) moves with the central deformable insulator (30) and print head carriage (31), and retains its length.
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
8.
METHODS OF PRINTING 3D PARTS WITH LOCALIZED THERMAL CYCLING
A method of printing a 3D part with an additive manufacturing system includes printing a first portion of the part and pre-heating the first portion of the part along an upcoming tool path to a temperature at or above a material- specific bonding temperature and below a degradation temperature of the material. Material is extruding material onto the first portion along the pre-heated tool path while the temperature along the part surface remains at or above a material- specific bonding temperature and below the degradation temperature of the material thereby forming a newly extruded road. The method includes cooling the newly extruded road along the pre-heated tool path to remove heat imparted by the preheating step such that a thermally stable temperature is reached, wherein the preheating, extruding and cooling is performed in less than ten seconds.
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
A water dispersible sulfopolymer for use as a material in the layer-wise additive manufacture of a 3D part made of a non water dispersible polymer wherein the water dispersible polymer is a reaction product of a metal sulfo monomer, the water dispersible sulfo- polymer being dispersible in water resulting in separation of the water dispersible polymer from the 3D part made of the non water dispersible polymer.
A method for printing a three-dimensional part (30) with an additive manufacturing system (10), which includes providing a part material that compositionally has one or more semi-crystalline polymers and one or more secondary materials that are configured to retard crystallization of the one or more semi-crystalline polymers, where the one or more secondary materials are substantially miscible with the one or more semi- crystalline polymers. The method also includes melting the part material in the additive manufacturing system (10), forming at least a portion of a layer of the three-dimensional part (30) from the melted part material in a build environment (12), and maintaining the build environment (12) at an annealing temperature that is between a glass transition temperature of the part material and a cold crystallization temperature of the part material.
B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
11.
ADDITIVE MANUFACTURING WITH POLYAMIDE CONSUMABLE MATERIALS
A consumable material (52) for use in an additive manufacturing system (10), the consumable material (52) comprising a polyamide blend of at least one semi- crystalline polyamide, and at least one amorphous polyamide that is substantially miscible with the at least one semi-crystalline polyamide, and a physical geometry configured to be received by the additive manufacturing system (10) for printing a three-dimensional part (30) from the consumable material (52) in a layer-by-layer manner using an additive manufacturing technique. The consumable material (52) is preferably capable of printing three-dimensional parts (30) having good part strengths and ductilities, and low curl.
B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
B29C 64/255 - Enclosures for the building material, e.g. powder containers
An additive manufacturing system (30) for printing three-dimensional parts (50), the system (30) comprising a heatable region (34), a receiving surface (36a), a print head (40) configured to print a three-dimensional part (50) onto the receiving surface (36a) in a layer-by-layer manner along a printing axis, and a drive mechanism (38) configured to index the receiving surface (36a) along the printing axis such that the receiving surface (36a) and at least a portion of the three-dimensional part (50) move out of the heatable region (34).
An additive manufacturing system (10) comprising a transfer medium (14, 114, 214) configured to receive the layers (28, 128, 228) from a imaging engine (12), a heater (32, 132, 232) configured to heat the (28, 128, 228) layers on the transfer medium (14, 114, 214), and a layer transfusion assembly (33, 133, 233) that includes a build platform (18, 118, 218), and is configured to transfuse the heated layers (28, 128, 228) onto the build platform (18, 118, 218) in a layer-by-layer manner to print a three-dimensional part (22, 122, 222).
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B33Y 40/20 - Post-treatment, e.g. curing, coating or polishing
B41J 3/407 - Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
14.
SEMI-CRYSTALLINE CONSUMABLE MATERIALS FOR USE IN EXTRUSION-BASED ADDITIVE MANUFACTURING SYSTEMS
A consumable filament (34, 134, 234) for use in an extrusion-based additive manufacturing system (10), where the consumable filament (34, 134, 234) comprises a first portion (36, 136, 236) of a first semi-crystalline polymeric material, and a second portion (38, 138, 238) of a second semi-crystalline polymeric material, and where the second semi-crystalline polymeric material has a crystallization temperature that is greater than a crystallization temperature of the first semi-crystalline polymeric material.
B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
B33Y 30/00 - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - Details thereof or accessories therefor
B33Y 80/00 - Products made by additive manufacturing
15.
ENCODED CONSUMABLE MATERIALS AND SENSOR ASSEMBLIES FOR USE IN ADDITIVE MANUFACTURING SYSTEMS
A consumable material (44, 58, 74, 204, 304) and sensor assembly (24, 26, 200, 300) for use in an additive manufacturing system (10), the consumable material (44, 58, 74, 204, 304) comprising an exterior surface (48, 64, 82, 322) having encoded markings (50, 68, 84, 320) that are configured to be read by the sensor assembly (24, 26, 200, 300), where the consumable material (44, 58, 74, 204, 304) is configured to be consumed in the additive manufacturing system (10) to build at least a portion of a three-dimensional model (28, 30).
C23C 16/52 - Controlling or regulating the coating process
B23K 35/00 - Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
B29C 35/08 - Heating or curing, e.g. crosslinking or vulcanising by wave energy or particle radiation
B32B 3/00 - Layered products essentially comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products essentially having particular features of form
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B65H 75/00 - Storing webs, tapes, or filamentary material, e.g. on reels
G01N 21/00 - Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
16.
NON-CYLINDRICAL FILAMENTS FOR USE IN EXTRUSION-BASED DIGITAL MANUFACTURING SYSTEMS
A consumable material (34) for use in an extrusion-based digital manufacturing system (10), the consumable material (34) comprising a length (36) and a cross-sectional profile (38) of at least a portion of the length (36) that is axially asymmetric. The cross-sectional profile (38) is configured to provide a response time with a non- cylindrical liquefier (48) of the extrusion-based digital manufacturing system (10) that is faster than a response time achievable with a cylindrical filament in a cylindrical liquefier for a same thermally limited, maximum volumetric flow rate.
B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
B29D 7/00 - Producing flat articles, e.g. films or sheets
17.
RIBBON LIQUEFIER FOR USE IN EXTRUSION-BASED DIGITAL MANUFACTURING SYSTEMS
A ribbon liquefier (38) comprising an outer liquefier portion (66) configured to receive thermal energy from a heat transfer component (40), and a channel (72) at least partially defined by the outer liquefier portion (66), where the channel (72) has dimensions that are configured to receive a ribbon filament (44), and where the ribbon liquefier (38) is configured to melt the ribbon filament (44) received in the channel (72) to at least an extrudable state with the received thermal energy to provide a melt flow. The dimensions of the channel (72) are further configured to conform the melt flow from an axially- asymmetric flow to a substantially axially-symmetric flow in an extrusion tip (52) connected to the ribbon liquefier (38).
B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
18.
SUPPORT MATERIAL FOR DIGITAL MANUFACTURING SYSTEMS
A support material feedstock (36) comprising a first copolymer and a polymeric impact modifier, where the first copolymer includes a first monomer unit comprising a carboxyl group and a second monomer unit comprising a phenyl group.
B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
The invention relates to a compound comprising (a) at least two polymerisable moieties, (b) at least one amino acid residue of an amino acid comprising at least two amine groups of which at least two amine groups have formed a carbamate, a thiocarbamate or a carbamide group, and (c) a biomolecular moiety linked directly or via a spacer to the carboxylic acid moiety of the diamino acid residue or a carboxylic acid to which such moiety can be linked. The invention further relates to a polymer obtainable from such compound.
A method of forming a three-dimensional object using an extrusion- based layered deposition system, the method comprising generating a build path (10) for building a layer of the three- dimensional object, where the build path (10) defines a void region (20). The method further comprising generating at least one intermediate path in the void region (20), and generating a remnant path (21) based at least in part on the at least one intermediate path.
The present invention is a method (10) for manufacturing a three-dimensional object. The method (10) includes receiving (14) digital information of the three-dimensional object over a communication line and building (30) the three- dimensional object based at least in part on the received digital information, where at least part of the three-dimensional object is built by rapid manufacturing, and where the three-dimensional object comprises an exterior surface. The method also includes vapor smoothing (32) at least a portion of the exterior surface of the three-dimensional object.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B29C 64/386 - Data acquisition or data processing for additive manufacturing
G05B 19/4099 - Surface or curve machining, making 3D objects, e.g. desktop manufacturing
patents
