公开(公告)号：US20210163350A1

公开(公告)日：2021-06-03

申请号：US17257345

申请日：2019-06-27

Applicant: BASF SE

Inventor： Claus GABRIEL ,  Thomas MEIER ,  Natalie Beatrice Janine HERLE ,  Leander VERBELEN ,  Stefan JOSUPEIT

IPC: C03C25/328 ,  C04B35/532 ,  C04B35/524 ,  C04B35/515 ,  C04B35/14 ,  C04B35/16 ,  C04B35/628 ,  C04B35/626 ,  C04B35/634 ,  C04B35/64 ,  C03C1/02 ,  C03C12/00 ,  C03B37/16 ,  B33Y70/10 ,  D01F11/08 ,  D01F11/14

Abstract: A process for the production of sinter powder particles (SP), comprising the steps a) providing at least one continuous filament, b) coating, the at least one continuous filament provided in step a) with at least one thermoplastic polymer to obtain a continuous strand comprising the at least one continuous filament, coated with the at least one thermoplastic polymer, wherein the average cross-sectional diameter of the strand is in the range of 10 to 300 pm, and c) size reducing of the continuous strand provided in step b) in order to obtain the sinter powder particles (SP), wherein the average length of the sinter powder particles (SP) is in the range of 10 to 300 pm. The present invention further relates to sinter powder particles (SP) obtained by the process, the use of the sinter powder particles (SP) in a powder-based additive manufacturing process and sinter powder particles (SP) having an essentially cylindrical shape N as well as a process for the production of a shaped body by laser sintering or high-speed sintering of sinter powder particles (SP).