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HIGHLY CRYSTALLINE POLY(LACTIC ACID) FILAMENTS FOR MATERIAL-EXTRUSION BASED ADDITIVE MANUFACTURING

机译：基于材料挤出的增材制造的高结晶度聚乳酸

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摘要

This invention involves a new and better solution to the problems associated with the premature softening of PLA filaments in the additive manufacturing of three dimensional articles. It is based upon the finding that poly(lactic acid) filaments with high crystallinity offer much better resistance to heat-induced softening. The crystalline poly(lactic acid) filament of this invention can accordingly be used in the additive manufacturing of three dimensional articles without encountering the problems associated with premature softening, such as poor quality and printer jamming. The crystalline poly(lactic acid) filaments of this invention can also be used in additive manufacturing of three dimensional articles without compromising the quality of the ultimate product, reducing printing speed, increasing cost, or leading to increased printer complexity. This invention more specifically discloses a filament for use in three-dimensional printing which is comprised of crystallized poly(lactic acid), wherein said filament has a diameter which is within the range of 1.65 mm to 1.85 mm.

机译：本发明涉及一种新的更好的解决方案，以解决与三维制品的增材制造中的PLA长丝过早软化有关的问题。基于这一发现，具有高结晶度的聚乳酸丝对热诱导的软化具有更好的抵抗力。因此，本发明的结晶聚乳酸丝可用于三维制品的增材制造中，而不会遇到与过早软化有关的问题，例如质量差和打印机卡塞。本发明的结晶聚乳酸丝也可以用于三维制品的增材制造，而不会损害最终产品的质量，降低印刷速度，增加成本或导致印刷机复杂性的增加。本发明更具体地公开了一种用于三维印刷的细丝，其由结晶的聚乳酸构成，其中所述细丝的直径在1.65mm至1.85mm的范围内。

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公开/公告号US2019240967A1

专利类型
公开/公告日2019-08-08

原文格式PDF
申请/专利权人 XIAOFAN LUO;ZHAOKUN PEI;
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申请/专利号US201916385431
发明设计人 XIAOFAN LUO;ZHAOKUN PEI;
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申请日2019-04-16
分类号B33Y10;B29C48;B29C71/02;B29C48/05;D01D5/08;B33Y70;B29C71;B29C64/106;C08G63/08;D01F6/62;
国家 US
入库时间 2022-08-21 12:06:49

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