公开(公告)号：US20220258407A1

公开(公告)日：2022-08-18

申请号：US17622077

申请日：2020-06-26

Applicant: Arkema France

Inventor： Roderick REBER ,  David LIU ,  Evan FISHER

IPC: B29C64/118 ,  B29C64/314 ,  B29C64/364 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y40/20 ,  B33Y70/00 ,  B33Y80/00

Abstract: The invention relates to an additive manufacturing process by extrusion for forming a three-dimensional part in an additive manufacturing machine having a build environment, the process comprising: i) providing a composition comprising at least one poly-aryl-ether-ketone (PAEK) having a melt viscosity from about 200 Pa·s to about 1500 Pa·s, according to ASTM D3835-16, measured at a temperature of 320° C. and at a shear rate of 100 s−1, by capillary rheology using a 1 mm diameter, 15 mm long die; ii) extruding the composition in the build environment at an extrusion temperature equal to 330° C. or less, to form an extruded part section; and, iii) cooling the extruded part section in the build environment. The invention also relates to a filament and its use in said additive manufacturing process and the corresponding object obtainable from said additive manufacturing process.

公开(公告)号：US20210309850A1

公开(公告)日：2021-10-07

申请号：US17260036

申请日：2019-05-29

Applicant: Arkema France

Inventor： David LIU ,  William WOLF ,  Brendan MCGRAIL

IPC: C08L71/00 ,  C09D11/102 ,  C09D11/101 ,  C09D11/30 ,  B33Y10/00 ,  B33Y70/00 ,  B29C64/165

Abstract: A sintered article may be formed from a composition containing at least sinterable thermoplastic particles and a curable (meth)acrylate resin component, wherein the sinterable thermoplastic particles are insoluble in the curable (meth)acrylate resin component at 25° C. The curable (meth)acrylate resin component may be cured, thereby forming an intermediate article which may be converted into a sintered article using conditions effective to remove at least a portion of the matrix formed by the cured curable (meth)acrylate resin component and to sinter the thermoplastic particles.