公开(公告)号：EP3094476A4

公开(公告)日：2017-09-27

申请号：EP14879087

申请日：2014-03-31

Applicant: HEWLETT-PACKARD DEV COMPANY L P

Inventor： JUAN FERNANDO ,  DE PENA ALEJANDRO MANUEL ,  COMAS ESTEVE ,  DAVIS EDWARD DALE

IPC: B29C67/00

CPC classification number: B33Y30/00 ,  B29C64/00 ,  B29C64/386 ,  B29C64/40

公开(公告)号：EP3200980A4

公开(公告)日：2017-10-04

申请号：EP14903082

申请日：2014-09-30

Applicant: HEWLETT-PACKARD DEV COMPANY L P

Inventor： NG HOU T ,  EMAMJOMEH ALI ,  DE PENA ALEJANDRO MANUEL ,  DAVIS EDWARD DALE

IPC: B29C67/00 ,  B29C64/165 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  C08L75/04 ,  C09K3/00

CPC classification number: B29C67/0081 ,  B29C64/165 ,  B29C67/0088 ,  B29C67/0096 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  B33Y70/00 ,  B33Y80/00 ,  C08K3/36 ,  C08L75/04 ,  C09D7/1216 ,  C09D7/61 ,  C09D201/00

Abstract: Provided in one example herein is a three-dimensional printing method, comprising: (A) forming a layer comprising a comprising particles comprising a polymer and cavities between the particles, wherein the particles have an average diameter of between about 5 μm and about 250 ρm; (B) disposing a liquid suspension over at least a portion of the layer such that the liquid suspension infiltrates into the cavities, wherein the liquid suspension comprises a radiation-absorbing coalescent agent and nanoparticles having an average diameter of less than or equal to about 500 nm; (C) forming an object slice by exposing the infiltrated layer to a radiant energy, wherein the object slice comprises a polymeric matrix comprising the polymeric particles, at least some of which are fused to one another, and the nanoparticles within the polymeric matrix; and (D) repeating (A) to (C) to form the three-dimensional object comprising multiple object slices bound depth-wise to one another.

Abstract translation: 在本文的一个实例中提供了一种三维印刷方法，其包括：（A）形成包含含有颗粒的层，所述颗粒包含聚合物和所述颗粒之间的空腔，其中所述颗粒的平均直径为约5μm-约250μm ; （B）在所述层的至少一部分上设置液体悬浮液，使得所述液体悬浮液渗透到所述腔体中，其中所述液体悬浮液包含辐射吸收聚结剂和平均直径小于或等于约500 纳米; （C）通过将所述渗透层暴露于辐射能量来形成物体切片，其中所述物体切片包含聚合物基体，所述聚合物基体包含所述聚合物颗粒，所述聚合物颗粒中的至少一些相互稠合，并且所述纳米颗粒位于所述聚合物基体内; 和（D）重复（A）至（C）以形成包括彼此深度绑定的多个对象切片的三维对象。

公开(公告)号：EP3094474A4

公开(公告)日：2017-12-27

申请号：EP14878652

申请日：2014-01-31

Applicant: HEWLETT-PACKARD DEV COMPANY L P

Inventor： NAUKA KRZYSZTOF ,  COMAS ESTEVE ,  DE PENA ALEJANDRO MANUEL ,  TOM HOWARD S ,  NG HOU T

IPC: B29C67/00 ,  B33Y30/00

CPC classification number: B29C64/386 ,  B29C64/00 ,  B29C64/40

公开(公告)号：EP3126122A4

公开(公告)日：2017-11-22

申请号：EP14888061

申请日：2014-03-31

Applicant: HEWLETT-PACKARD DEV COMPANY L P

Inventor： PUIGARDEU ARAMENDIA SERGIO ,  DE PENA ALEJANDRO MANUEL ,  CORTES HERMS SEBASTIA

IPC: B29C64/393 ,  B29C64/165 ,  B29C64/205 ,  B33Y50/02

CPC classification number: B29C67/0088 ,  B29C64/165 ,  B29C64/205 ,  B29C64/393 ,  B29K2105/0058 ,  B29K2105/251 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: Apparatus, computer readable medium, or method to determine a layer volume change in a processed layer of powder, and distribute an additional amount of powder in a subsequent layer based on the determined layer volume change.

公开(公告)号：EP3212383A4

公开(公告)日：2017-11-08

申请号：EP14905069

申请日：2014-10-29

Applicant: HEWLETT-PACKARD DEV COMPANY L P

Inventor： NG HOU T ,  GANAPATHIAPPAN SIVAPACKIA ,  DE PENA ALEJANDRO MANUEL ,  DAVIS EDWARD DALE ,  EMAMJOMEH ALI

IPC: B29C67/00 ,  B22F1/00 ,  B22F3/00 ,  B22F3/105 ,  B29C64/165 ,  B29C67/24 ,  B33Y30/00

CPC classification number: B29C67/0077 ,  B22F1/0062 ,  B22F3/008 ,  B22F3/1055 ,  B29C64/165 ,  B29C67/0081 ,  B29C67/247 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/00 ,  B33Y50/02

Abstract: In an example of a three-dimensional (3D) printing method, a build material (consisting of an inorganic particle and a polymer attached thereto) is applied. The polymer is a continuous coating having a thickness from about 3 nm to about 1500 nm, or nano-beads having an average diameter from about 3 nm to about 1500 nm. The build material is heated to a temperature from about 5° C. to about 50° C. below the polymer's melting point. A coalescent dispersion (including a coalescent agent and inorganic nanoparticles) is selectively applied on a portion of the build material, and the applied build material and coalescent dispersion are exposed to electromagnetic radiation. The coalescent dispersion absorbs the electromagnetic radiation and heats up the portion of the build material in contact therewith to fuse the portion of the build material in contact with the coalescent dispersion and to form a layer of a 3D object.