公开(公告)号：US20180015670A1

公开(公告)日：2018-01-18

申请号：US15547826

申请日：2016-02-23

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Hao Gu ,  Thomas Hocker ,  Scott Davis ,  Lanti Yang

IPC: B29C41/06 ,  B29C41/50 ,  B29K69/00

CPC classification number: B29C64/255 ,  B29C41/04 ,  B29C41/06 ,  B29C41/50 ,  B29C64/153 ,  B29C64/20 ,  B29K2069/00 ,  B33Y10/00 ,  B33Y30/00

Abstract: A system for fabricating a part (12) comprises a build chamber (14), a powder feed system (18) for feeding a polymeric powder (22) to the build chamber, a heating system (40) for melting and fusing the polymeric powder to form a fused polymeric part in the build chamber, and a vacuum system (50) to apply a specified vacuum pressure to the build chamber, wherein the vacuum pressure is at or below a threshold pressure so that a porosity of the fused polymeric part is at or below a specified threshold porosity.

公开(公告)号：US20200039180A1

公开(公告)日：2020-02-06

申请号：US16379082

申请日：2019-04-09

Applicant: SABIC Global Technologies B.V.

Inventor： Scott Davis ,  Theofanis Theofanous ,  Nikhil Verghese

IPC: B32B5/26 ,  B32B5/02

Abstract: This disclosure includes fiber-reinforced composites including and/or formed in part from fibrous non-woven layers, stacks of layers that can be consolidated to form such composites, articles, such as portable electronic device housing panels, including such composites, and methods for making such composites and articles. In some composites, at least one of the non-woven layer(s) includes: (1) a first thermoplastic material that may be present as a first set of resin fibers; (2) a second thermoplastic material that may be present as a second set of resin fibers, the second thermoplastic material having a transition temperature and/or a low-shear viscosity that is higher than that of the first thermoplastic material; (3) a first set of reinforcing fibers; and/or (4) a second set of reinforcing fibers of a type distinct from that of the first set of reinforcing fibers.