公开(公告)号：US11667083B2

公开(公告)日：2023-06-06

申请号：US16342379

申请日：2017-10-16

Applicant: KURARAY CO., LTD.

Inventor： Yousuke Kumaki ,  Moritz Baier ,  Herbert Briers Keable

IPC: B29C64/40 ,  B33Y40/00 ,  B33Y70/00 ,  B29C64/314 ,  B29C64/118 ,  C09D11/104 ,  C09D11/106 ,  C09D11/54 ,  B29K29/00 ,  B29K101/12 ,  B33Y10/00

CPC classification number: B29C64/40 ,  B29C64/118 ,  B29C64/314 ,  B33Y10/00 ,  B33Y40/00 ,  B33Y70/00 ,  C09D11/104 ,  C09D11/106 ,  C09D11/54 ,  B29K2029/04 ,  B29K2101/12

Abstract: A process of manufacturing a three-dimensional object includes a step of depositing and solidifying molten polyvinyl alcohol to form a support structure; and a step of depositing and solidifying a molten thermoplastic polymer on the support structure to form a three-dimensional preform. The support structure has a mixture of at least 50% by weight of polyvinyl alcohol and at most 50% by weight of at least one polymer of polyvinyl butyral, polylactid acid, ethylene-vinylalcohol-vinylacetate terpolymer, vinyl acetate-vinyl pyrrolidone copolymer, acrylonitrile-butadiene-styrene terpolymer, polycaprolactone, vinyl acetate-vinyl caprolactame copolymer, and polyvinyl alcohol having a degree of hydrolysis DH of 30-65%. The support structure can be dissolved to form the three-dimensional object.