公开(公告)号：WO2023075876A1

公开(公告)日：2023-05-04

申请号：PCT/US2022/038230

申请日：2022-07-25

申请人： UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION

发明人： GILMER, Dustin, Blake ,  STILES, Alexander, Kendall

IPC分类号： B29C64/321 ,  B33Y80/00 ,  B33Y40/20

摘要： A method of additive manufacturing is described wherein powder material is spread in a layer, contacted with a binding polymer and cured with light. Also described is a system for preparing additive manufactured objects such as molds, tools and composites.

公开(公告)号：WO2023037263A1

公开(公告)日：2023-03-16

申请号：PCT/IB2022/058419

申请日：2022-09-07

申请人： INTREPID AUTOMATION

发明人： WYNNE, Ben ,  STADTMUELLER, Madison Lee ,  CHOUSAL, Ivan Dejesus ,  TANNER, Christopher Sean

IPC分类号： B29C64/314 ,  B29C64/386 ,  B29C64/393 ,  B29C44/02 ,  B29C44/56 ,  B29C44/34 ,  B33Y40/20 ,  B33Y70/00 ,  B33Y50/00

摘要： Methods of creating additive manufactured parts from expanding foam material include printing a part made of an expandable foam, using an additive manufacturing system. The foam is printed in an unexpanded state and has a closed layer at an external surface of the part. Expansion of the part is controlled, using the additive manufacturing system, wherein the expansion is performed after the printing. Methods also include modeling an expansion of a part made of an expandable foam, and printing the part made of the expandable foam, using an automated additive manufacturing system and according to the modeling. The foam is printed in an unexpanded state and has a closed layer at an external surface of the part.

公开(公告)号：WO2023006738A1

公开(公告)日：2023-02-02

申请号：PCT/EP2022/070930

申请日：2022-07-26

申请人： PLASTIPRINT 3D LTD.

发明人： CAIRNS, Gary ,  HOBENAEL, Argo ,  LAMBIE, Andrew

IPC分类号： B22F10/64 ,  B22F12/17 ,  B22F12/82 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20 ,  B22F12/86 ,  B22F3/00 ,  B22F10/10 ,  B29C64/153

摘要： A method of forming an object by additive manufacturing within a furnace defining a cavity is provided. The method comprises: moving a build plate from a raised position to a lowered position within a cavity, the build plate for receiving build material to form an object thereon while moving from the raised position to the lowered position; and sintering the object within the furnace. The sintering comprises releasing heat from the cavity in the furnace by opening the upper lid. A furnace for additive manufacture of an object is further provided.

公开(公告)号：WO2023285601A1

公开(公告)日：2023-01-19

申请号：PCT/EP2022/069753

申请日：2022-07-14

申请人： FUNDACIÓN AITIIP

发明人： DIESTE MARCIAL, José Antonio ,  LAGUÍA PÉREZ, Alberto ,  GRACIA ARANEGA, Pascual ,  MONZÓN CATALÁN, Iván ,  MARQUÉS PAOLA, Alejandro ,  GONZALVO BAS, Berta

IPC分类号： B29C64/10 ,  B29C64/35 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y80/00 ,  B29C64/30

摘要： The present invention refers to a method for producing a structure, a machined layered structure obtainable by said method, a structure obtained by said method, to the use of the machined layered structure and to the use of the structure as a mould or as a mould part; preferably for polymer moulding processes or sheet metal stamping processes.

公开(公告)号：WO2023274889A1

公开(公告)日：2023-01-05

申请号：PCT/EP2022/067418

申请日：2022-06-24

申请人： DYEMANSION GMBH

发明人： SPES, Maximilian ,  HERZ, Fabian ,  BAHRENBERG, Mirko

IPC分类号： B29C64/295 ,  B22F10/10 ,  B22F10/68 ,  B29C64/35 ,  B33Y40/20 ,  B08B7/00 ,  B08B5/02 ,  B08B7/0035 ,  B08B7/005 ,  B08B7/0071 ,  B08B7/02

摘要： Ein Verfahren Entfernen von Restpulver (82, 83) eines additiven Fertigungsprozesses von Kunststoffbauteilen (109) und/oder zum Verdichten der Oberfläche von Kunststoffbauteilen (109) umfasst das Ansteuern (3005) mindestens eines Heizelements (151) einer Strahlanlage (100) zum Beheizen (3105, 3115) der Kunststoffbauteile (109), wenn diese in einer Prozesskammer (101) der Strahlanlage (100) angeordnet sind. Das Verfahren umfasst ferner das Ansteuern (3010) einer Strahlvorrichtung (121, 125, 126, 127) der Strahlanlage (100) zum Bestrahlen (3110) der Kunststoffbauteile (109) mit Strahlmittel und/oder Ansteuern (3010) einer Bewegungseinrichtung (101) der Strahlanlage (100) zum Bewegen der Kunststoffbauteile (109), um derart das Restpulver (82, 83) von einer Oberfläche der Kunststoffbauteile (109) zu lösen und/oder die Oberfläche der Kunststoffbauteile zu verdichten.

公开(公告)号：WO2022255997A1

公开(公告)日：2022-12-08

申请号：PCT/US2021/035352

申请日：2021-06-02

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： DISCEKICI, Emre Hiro ,  WOODRUFF, Shannon Reuben ,  YEMANE, Alay ,  NEGRI JIMENEZ, Graciela Emma ,  KOWALSKI, Mark ,  FLEISCHMANN, Carolin

IPC分类号： B29C64/165 ,  B29C64/379 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/00 ,  B33Y80/00

摘要： A three-dimensional printed object can include a fused polyamide body having electromagnetic radiation absorber embedded as particles within the fused polyamide body, and the three-dimensional printed object can further include residual benzyl alcohol soaked into a surface of the polyamide body.

公开(公告)号：WO2022245326A1

公开(公告)日：2022-11-24

申请号：PCT/US2021/032672

申请日：2021-05-17

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： DISCEKICI, Emre Hiro ,  WOODRUFF, Shannon Reuben ,  YEMANE, Alay

IPC分类号： B29C64/165 ,  B29C64/20 ,  B29C64/379 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20 ,  B33Y70/00 ,  B33Y80/00

摘要： The present disclosure describes three-dimensional printing kits, methods of making three-dimensional printed objects, and three-dimensional printing systems. In one example, a three-dimensional printing kit can include a power bed material including thermoplastic polymer particles, a fusing agent to selectively apply to the powder bed material, and a post-processing agent to apply to a three-dimensional printed object. The fusing agent can include water and a radiation absorber that absorbs radiation and converts the radiation energy to heat. The post-processing agent can include a curable epoxy resin, where the epoxy resin, when cured, has a higher elastic modulus than the thermoplastic polymer particles.

公开(公告)号：WO2022233831A1

公开(公告)日：2022-11-10

申请号：PCT/EP2022/061786

申请日：2022-05-03

申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E. V.

发明人： WEGWERTH, Paul

IPC分类号： B29C64/118 ,  B29C64/129 ,  B29C64/295 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20

摘要： Ein Verfahren sowie eine Anordnung zur additiven Fertigung von Bauteilen mittels Materialextrusion, bei dem die Bauteile (1) schichtweise aus einem Bauteilmaterial aufgebaut werden, das in viskosem Zustand Schicht für Schicht auf einem Träger (10) aufgetragen wird. Bei dem Verfahren wird das jeweils als Schicht (8) aufgetragene Bauteilmaterial synchron zum Auftrag in noch viskosem Zustand mit wenigstens einem auf eine seitliche Begrenzung der Schicht (8) gerichteten Laserstrahl (3) bearbeitet, vorzugsweise um eine Glättung von Unebenheiten an Oberflächen des Bauteils (1) zu erreichen. Das Verfahren ermöglicht die Fertigung von Bauteilen mittels Materialextrusion mit verringerter Oberflächenrauheit auch an nicht sichtbaren Oberflächen, ohne hierzu eine Nachbearbeitung durchführen zu müssen.

公开(公告)号：WO2022214637A1

公开(公告)日：2022-10-13

申请号：PCT/EP2022/059374

申请日：2022-04-08

申请人： RASHID, Amir ,  TOMKOWSKI, Robert ,  PEUKERT, Bernd Walter

发明人： RASHID, Amir ,  TOMKOWSKI, Robert ,  PEUKERT, Bernd Walter

IPC分类号： B22F10/16 ,  B22F10/18 ,  B22F10/64 ,  B22F12/53 ,  B33Y30/00 ,  B33Y40/20 ,  B33Y10/00 ,  B22F3/10 ,  B22F10/364 ,  B22F10/50

摘要： The present invention relates to a method and apparatus for forming a three-dimensional metal component comprising the steps of: depositing onto a substrate provided on a stage at least one green layer formed by means of an extruder depositing a string of feedstock material, which layer corresponding to a slice of a digital model of said three-dimensional meal component, wherein said green layer is constituted by a mixture of metal particles and binder composition, debinding said at least one green layer for forming a brown layer by impinging an energy beam from an energy source having a first setting onto a top surface of said green layer provided on said substrate on said stage, wherein said debinding removes most of said binder composition, sintering the brown layer for forming a meal layer by impinging an energy beam from an energy source having second setting onto a top surface of said brown layer, and repeating steps a-c until the three-dimensional metal component is finished.

公开(公告)号：WO2022211777A1

公开(公告)日：2022-10-06

申请号：PCT/US2021/024589

申请日：2021-03-29

申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

发明人： HARVEY, Natalie Laura ,  MARIN CAMARA, Ariadna ,  GASSO PUCHAL, Xavier ,  MESTRES ROSAS, Arnau

IPC分类号： B29C64/165 ,  B29C64/379 ,  B33Y10/00 ,  B33Y70/10 ,  B33Y40/20

摘要： The present disclosure relates to a method of manufacturing a 3D printed object. The method comprises condensing solvent vapour on an outer surface of the 3D printed object. The 3D printed object comprises polymer and radiation absorber. The outer surface of the 3D printed object a) comprises pores that absorb the solvent and b) has a surface roughness, Ra, of greater than 5 µm. The method also comprises dissolving a portion of the 3D printed object to tailor the surface roughness, Ra, of the 3D printed object to a value of from 0.5 to 4 µm.