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USE OF MIXTURES OF POLYVINYL ALCOHOL WITH LESS POLAR POLYMERS AS SUPPORT STRUCTURE IN 3D PRINTING PROCESS
USE OF MIXTURES OF POLYVINYL ALCOHOL WITH LESS POLAR POLYMERS AS SUPPORT STRUCTURE IN 3D PRINTING PROCESS
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机译:在3D印刷过程中使用聚乙烯醇与少极性聚合物的混合物作为支撑结构
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摘要
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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