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:
Jul. 09, 2024
Filed:
Jun. 04, 2019
Applicant:
Toyobo Co., Ltd., Osaka, JP;
Inventors:
Shintaro Ishimaru, Tsuruga, JP;
Hiroko Maruyama, Tsuruga, JP;
Tomoyuki Hashida, Osaka, JP;
Masayuki Haruta, Tsuruga, JP;
Assignee:
TOYOBO CO., LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 27/36 (2006.01); B32B 7/04 (2019.01); B32B 27/08 (2006.01); B32B 27/18 (2006.01); B65D 65/40 (2006.01); B65D 77/20 (2006.01); B65D 81/24 (2006.01); B65D 85/50 (2006.01); C08J 5/18 (2006.01);
U.S. Cl.
CPC ...
B32B 27/36 (2013.01); B32B 27/08 (2013.01); B65D 65/40 (2013.01); B65D 77/20 (2013.01); B65D 81/24 (2013.01); C08J 5/18 (2013.01); B32B 7/04 (2013.01); B32B 27/18 (2013.01); B32B 2250/244 (2013.01); B32B 2307/54 (2013.01); B32B 2307/702 (2013.01); B32B 2307/724 (2013.01); B32B 2307/732 (2013.01); B32B 2435/00 (2013.01); B32B 2439/46 (2013.01); B32B 2439/70 (2013.01); B65D 85/50 (2013.01); C08J 2367/02 (2013.01); C08J 2467/02 (2013.01);
Abstract
The present invention provides a polyester-based film for keeping freshness, comprising a polyester-based resin layer comprising, ethylene terephthalate as a main component, wherein the polyester-based film satisfies the requirements (1) to (4); that can extend the shelf life of the contents such as fruits and vegetables when using as a packaging bag, increase a commodity value, and re-close even after the packaging bag opened.