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:
Dec. 16, 2025
Filed:
Oct. 22, 2020
Applicant:
Toyobo Co., Ltd., Osaka, JP;
Inventors:
Masafumi Inoue, Tsuruga, JP;
Masayuki Haruta, Tsuruga, JP;
Assignee:
TOYOBO CO., LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 67/02 (2006.01); B29C 48/00 (2019.01); B29C 48/08 (2019.01); B29C 48/88 (2019.01); B29C 48/91 (2019.01); B29C 71/02 (2006.01); C08J 5/18 (2006.01); B29K 67/00 (2006.01); B29K 105/26 (2006.01); B29L 7/00 (2006.01);
U.S. Cl.
CPC ...
C08L 67/02 (2013.01); B29C 48/0018 (2019.02); B29C 48/0022 (2019.02); B29C 48/022 (2019.02); B29C 48/08 (2019.02); B29C 48/91 (2019.02); B29C 48/9135 (2019.02); B29C 71/02 (2013.01); C08J 5/18 (2013.01); B29C 2071/025 (2013.01); B29K 2067/003 (2013.01); B29K 2105/26 (2013.01); B29L 2007/008 (2013.01); C08J 2367/02 (2013.01); C08J 2467/02 (2013.01); C08L 2203/162 (2013.01); C08L 2205/025 (2013.01); C08L 2207/20 (2013.01);
Abstract
The present invention aims to provide a heat-shrinkable polyester film roll having decreased generation of wrinkles or longitudinal shrink mark. The present invention provides a film roll of a heat shrinkable polyester film, wherein a polyester of the polyester film contains recycled raw material from a PET bottle and an acid component of the polyester comprises isophthalic acid, and the film roll satisfies a specific average value of a shrinkage, specific isophthalic acid ratio, and specific thickness unevenness.