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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11667083 B1

PDFFull Text
Date of Patent:
Jun. 06, 2023

Filed:

Oct. 16, 2017

Use of mixtures of polyvinyl alcohol with less polar polymers as support structure in 3d printing process

Applicant:

Kuraray Co., Ltd., Kurashiki, JP;

Inventors:

Yousuke Kumaki, Troisdorf, DE;

Moritz Baier, Hofheim, DE;

Herbert Briers Keable, Liebistorf, CH;

Assignee:

KURARAY CO., LTD., Kurashiki, JP;

Attorney:

Oblon, McClelland, Maier & Neusadt, L.L.P.

Primary Examiner:

Michael M Robinson

Int. Cl.
CPC ...
B29C 64/40 (2017.01); B33Y 40/00 (2020.01); B33Y 70/00 (2020.01); B29C 64/314 (2017.01); B29C 64/118 (2017.01); C09D 11/104 (2014.01); C09D 11/106 (2014.01); C09D 11/54 (2014.01); B29K 29/00 (2006.01); B29K 101/12 (2006.01); B33Y 10/00 (2015.01);
U.S. Cl.
CPC ...
B29C 64/40 (2017.08); B29C 64/118 (2017.08); B29C 64/314 (2017.08); B33Y 10/00 (2014.12); B33Y 40/00 (2014.12); B33Y 70/00 (2014.12); C09D 11/104 (2013.01); C09D 11/106 (2013.01); C09D 11/54 (2013.01); B29K 2029/04 (2013.01); B29K 2101/12 (2013.01);
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.

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