公开(公告)号：WO2021174230A1

公开(公告)日：2021-09-02

申请号：PCT/US2021/022359

申请日：2021-03-15

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： OLUBUMMO, Adekunle ,  ZHAO, Lihua ,  HARTMAN, Aja ,  BRECZEWSKA JAWORSKA, Agnieszka Maria ,  BLANCHOT, Olivier Maurice Marcel ,  ROUGEAUX, Isabelle Santarella ,  PILUSO, Pierre Nicolas Roger ,  DELMAS, Jerome

IPC: B29C64/165 ,  B29C64/379 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/10

Abstract: The present disclosure relates to a method of manufacturing a 3D printed object. The method comprises selectively applying a fusing agent onto powder bed material; and exposing at least part of the powder bed material to radiation to fuse at least part of the powder bed material to form a layer of the 3D printed object. The fusing agent and/or a detailing agent is selectively applied to the powder bed material in a predetermined arrangement to form a porous region in the 3D printed object. The 3D printed object is then treated with a modifying agent, such that the modifying agent at least partially penetrates the porous region of the 3D printed object.