公开(公告)号：US20210130604A1

公开(公告)日：2021-05-06

申请号：US16473725

申请日：2017-12-27

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Vaidyanath RAMAKRISHNAN ,  Bruke JOFORE ,  Johannes Gerardus Petrus GOOSSENS ,  Hao GU ,  Johannes Martinus Dina GOOSSENS

IPC: C08L67/02 ,  B33Y70/10

Abstract: Provided are particulate compositions that include a matrix polymer and fibrillated reinforcement materials (e.g., PTFE or ultra-high molecular weight polyethylene fibrils) dispersed therein. The compositions are suitable for use in additive manufacturing processes.

公开(公告)号：US20180178413A1

公开(公告)日：2018-06-28

申请号：US15738190

申请日：2016-06-22

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Viswanathan KALYANARAMAN ,  Chiel Albertus LEENDERS ,  Hao GU

IPC: B29B13/00 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/153 ,  B33Y40/00 ,  C08G64/40 ,  C08G73/10 ,  C08J3/12 ,  C08J3/14

CPC classification number: B29B13/007 ,  B29C64/153 ,  B29K2069/00 ,  B29K2079/085 ,  B29K2995/0039 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00 ,  B33Y80/00 ,  C08G64/40 ,  C08G73/1053 ,  C08G2140/00 ,  C08G2250/00 ,  C08J3/12 ,  C08J3/14 ,  C08J2369/00 ,  C08J2379/08

Abstract: A method of making an article, the method comprising converting a first amorphous polymer to an at least partially crystalline polymeric powder composition and powder bed fusing the at least partially crystalline polymer powder composition to form a three-dimensional article comprising a second amorphous polymer.

公开(公告)号：US20200180217A1

公开(公告)日：2020-06-11

申请号：US16608274

申请日：2018-04-26

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Elena MILOSKOVSKA ,  Bruke JOFORE ,  Hao GU ,  Raul FERNANDEZ CABELLO ,  Vandita PAI-PARANJAPE ,  Federico CACCAVALE ,  Brian PRICE

IPC: B29C64/153 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/118 ,  B29C64/268

Abstract: Provided are systems and methods for additive manufacturing, which systems and methods yield parts having improved interlayer adhesion. In the disclosed technology, additional heating steps are applied on the upper surface of the already printed workpiece so as to offset the dropping temperature of that surface during part fabrication. These heating steps elevate the temperature of the surface to a value that results in a molten interface with subsequently-applied build material, leading to improved interlayer adhesion. This technology is applicable to a variety of additive manufacturing processes, including but not limited to selective laser sintering, fused filament fabrication, and large format additive manufacturing approaches.

公开(公告)号：US20210129428A1

公开(公告)日：2021-05-06

申请号：US17058280

申请日：2019-05-10

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Hao GU ,  Richard SCHOUWENAAR ,  Zahir BASHEER ,  Lanti YANG

IPC: B29C64/153 ,  B29C64/35 ,  B29C64/245 ,  B33Y10/00 ,  B33Y70/10 ,  B29C64/223

Abstract: The present invention relates to a process for moulding a polymeric object, the process comprising the steps of: (a) providing a substantially flat horizontally positioned layer of a material, the layer being a film or sheet; (b) providing a layer of a thermoplastic powder onto the layer provided under (a); (c) subjecting a pre-defined part of the thermoplastic powder to irradiation to heat the pre-defined part of the thermoplastic powder to a temperature at which the thermoplastic fuses or sinters onto at least a part of the flat layer of material; (d) terminating the exposure to irradiation; (e) providing a further layer of the thermoplastic powder onto the layer provided under (b); (f) subjecting a pre-defined part of the thermoplastic powder of the layer provided under (e) to irradiation to heat the pre-defined part of the thermoplastic powder to a temperature at which the thermoplastic fuses or sinters onto at least a part of the flat layer of the material fused under (c); (g) terminating the exposure to irradiation; (h) repeating steps (e)-(g) for as many cycles as required to complete the shape of the desired polymeric object; (i) removing the fraction of thermoplastic powder that has not been fused or sintered; and (j) optionally removing the substantially flat layer as provided under (a) from the polymeric object; wherein the surface area of the substantially flat layer of material is at least 200% of the surface area of that layer produced under steps (c)-(h) having the largest surface area. Such process allows for the production of small series or uniquely designed objects at low energy consumption wherein the objects exhibit high dimensional stability.

公开(公告)号：US20180371244A1

公开(公告)日：2018-12-27

申请号：US16062156

申请日：2016-12-20

Applicant: SABIC Global Technologies B.V.

Inventor： Chiel Albertus LEENDERS ,  Samuel IJSSELMUIDEN ,  Johannes Gerardus Petrus GOOSENS ,  Bruke JOFORE ,  Hao GU

IPC: C08L79/08 ,  B29C64/153

Abstract: Provided are thermoplastic-nanoparticle compositions that exhibit enhanced powder and melt flow. The disclosed compositions, comprising nanoparticles being silylated, have particular application in additive manufacturing processes, such as selective laser sintering and other processes.