Search International and National Patent Collections

1. (WO2018162268) CORE-SHELL FILAMENT FOR PRINTING SMOOTH FDM 3D ITEMS

Pub. No.:    WO/2018/162268    International Application No.:    PCT/EP2018/054678
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Tue Feb 27 00:59:59 CET 2018
IPC: B29C 64/118
B29C 64/188
B33Y 70/00
B33Y 10/00
B29C 64/30
Applicants: PHILIPS LIGHTING HOLDING B.V.
Inventors: HIKMET, Rifat, Ata, Mustafa
VAN HAL, Paulus, Albertus
Title: CORE-SHELL FILAMENT FOR PRINTING SMOOTH FDM 3D ITEMS
Abstract:
The invention provides a method for manufacturing a 3D item (1) by means of 3D printing. The method comprises the step of depositing, during a printing stage, 3D printable material (201) to provide 3D printed material (202), wherein the 3D printable material (201) comprises a core-shell filament (320) comprising (i) a core (321) comprising a core material (1321) having one or more of a core glass temperature Tg1 and a core melting temperature Tm1 and (ii) a shell (322) comprising a shell material (1322) having one or more of a shell glass temperature Tg2 and a shell melting temperature Tm2, wherein one or more of the shell glass temperature Tg2 and the shell melting temperature Tm2 is lower than one or more of the core glass temperature Tg1 and the core melting temperature Tm1. The method further comprises the step of heating, during a finishing stage, the 3D printed material (202) to a temperature equal to or higher than one or more of the shell glass temperature Tg2 and the shell melting temperature Tm2, and equal to or lower than one or more of the core glass temperature Tg1 and the core melting temperature Tm1.