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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 11958985 B1

PDFFull Text
Date of Patent:
Apr. 16, 2024

Filed:

Mar. 15, 2021

Heat sealable polyester film

Applicant:

Nan Ya Plastics Corporation, Taipei, TW;

Inventors:

Wen-Cheng Yang, Taipei, TW;

Te-Chao Liao, Taipei, TW;

Chia-Yen Hsiao, Taipei, TW;

Ching-Yao Yuan, Taipei, TW;

Assignee:

NAN YA PLASTICS CORPORATION, Taipei, TW;

Attorney:

Li & Cai Intellectual Property (USA) Office

Primary Examiner:

Frances Tischler

Int. Cl.
CPC ...
C09D 167/02 (2006.01); B29C 48/00 (2019.01); B29C 48/08 (2019.01); B29K 67/00 (2006.01); B29K 105/26 (2006.01); B29L 7/00 (2006.01); C08J 11/06 (2006.01); C08J 11/10 (2006.01);
U.S. Cl.
CPC ...
C09D 167/02 (2013.01); B29C 48/022 (2019.02); B29C 48/08 (2019.02); C08J 11/06 (2013.01); C08J 11/10 (2013.01); B29K 2067/003 (2013.01); B29K 2067/006 (2013.01); B29K 2105/26 (2013.01); B29L 2007/00 (2013.01); C08J 2367/02 (2013.01); C08J 2467/02 (2013.01);
Abstract

A heat sealable polyester film and a method for manufacturing the same are provided. The heat sealable polyester film is made from a recycled polyester material. The heat sealable polyester film includes a base layer and a heat sealable layer formed on at least one surface of the base layer. The heat sealable layer is formed from a first polyester composition. A main component of the first polyester composition is regenerated polyethylene terephthalate and the first polyester composition further includes at least one of 1,4-butanediol, isophthalic acid, neopentyl glycol, and polybutylene terephthalate. A heat sealing temperature of the heat sealable polyester film ranges from 120° C. to 230° C.

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