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.:
Date of Patent:
Jan. 20, 2015
Filed:
Oct. 31, 2011
Chi-wei Ciou, Taipei, TW;
Li-ling Chang, Taipei, TW;
Roy Wu, Taoyuan Hsien, TW;
Far Eastern New Century Corporation, Taipei, TW;
Abstract
A method of making a polylactic acid based article includes: (a) providing a sheet having a crystallinity ranging from 0% to 15% and including a polylactic acid polymer composition, the polylactic acid polymer composition having a polylactic acid polymer, a copolyester polymer, and a crystal nucleating agent; (b) heating the sheet to maintain a surface of the sheet at a temperature ranging from 95° C. to 105° C. while keeping the crystallinity of the sheet lower than 20%; and (c) thermoforming the sheet in a mold having a temperature ranging from 95° C. to 130° C. so as to form a polylactic acid based article having a crystallinity ranging from 35% to 45%.