IDiyas

For the Inventor, By the Inventor

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 12472673 B1

PDFFull Text
Date of Patent:
Nov. 18, 2025

Filed:

May. 08, 2015

High crystalline poly(lactic acid) filaments for material-extrusion based additive manufacturing

Applicant:

Jf Polymers (Suzhou) Co. Ltd., Changshu, CN;

Inventors:

Xiaofan Luo, Shanghai, CN;

Zhaokun Pei, Weifang, CN;

Assignee:

JF Polymers (Suzhou) Co. Ltd., Changshu, CN;

Attorney:

Alvin T. Rockhill

Primary Examiner:

Matthew D Matzek

Int. Cl.
CPC ...
B29C 48/05 (2019.01); B29C 48/00 (2019.01); B29C 48/06 (2019.01); B29C 64/118 (2017.01); B29C 71/00 (2006.01); B29C 71/02 (2006.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); C08G 63/08 (2006.01); D01D 5/08 (2006.01); D01D 10/04 (2006.01); D01F 6/62 (2006.01); D02J 13/00 (2006.01); B29C 48/02 (2019.01); B29C 48/285 (2019.01); B29C 48/30 (2019.01); B29K 67/00 (2006.01); B29K 105/00 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
B29C 48/05 (2019.02); B29C 48/022 (2019.02); B29C 48/06 (2019.02); B29C 64/118 (2017.08); B29C 71/0063 (2013.01); B29C 71/02 (2013.01); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); C08G 63/08 (2013.01); D01D 5/08 (2013.01); D01D 10/0409 (2013.01); D01F 6/625 (2013.01); D02J 13/005 (2013.01); B29C 48/02 (2019.02); B29C 48/2888 (2019.02); B29C 48/30 (2019.02); B29C 2071/022 (2013.01); B29K 2067/046 (2013.01); B29K 2105/0067 (2013.01); B29K 2995/0041 (2013.01); B29L 2031/731 (2013.01);
Abstract

Provided is 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 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 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. It more specifically discloses a filament for use in three-dimensional printing which is comprised of crystalized poly (lactic acid), wherein said filament has a diameter which is within the range of 1.65 mm to 1.85 mm.

Find Patent Forward Citations

Loading…