公开(公告)号：US20210197455A1

公开(公告)日：2021-07-01

申请号：US16077752

申请日：2017-07-14

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

Inventor： Shannon Reuben WOODRUFF ,  Ali EMAMJOMEH ,  Yi FENG ,  Erica FUNG ,  Carolin FLEISCHMANN ,  Geoffrey SCHMID

IPC: B29C64/165 ,  B33Y70/00

Abstract: This disclosure relates to a method of 3-D printing comprising: applying a layer of build material onto a print platform, wherein the build material comprises particles of a polymer comprising polymer chains having at least one reactive group that is protected with a protecting group; printing a de-protecting agent at selected locations on the layer of build material; and coalescing particles of the polymer at the printed locations on the layer of build material to form a coalesced polymer layer.