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:
Nov. 21, 2023
Filed:
Jul. 27, 2021
Applicant:
Toppan Printing Co., Ltd., Tokyo, JP;
Inventors:
Shunsuke Yajima, Tokyo, JP;
Masanobu Yoshinaga, Tokyo, JP;
Assignee:
TOPPAN PRINTING CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 27/08 (2006.01); B65D 65/40 (2006.01); B65D 81/24 (2006.01); B32B 27/00 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); C08L 23/06 (2006.01); C08L 45/00 (2006.01);
U.S. Cl.
CPC ...
B32B 27/08 (2013.01); B32B 27/00 (2013.01); B32B 27/32 (2013.01); B32B 27/325 (2013.01); B32B 27/36 (2013.01); B65D 65/40 (2013.01); B65D 81/24 (2013.01); C08L 23/06 (2013.01); C08L 45/00 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/732 (2013.01); B32B 2323/046 (2013.01); B32B 2329/04 (2013.01); B32B 2553/00 (2013.01); C08L 2203/162 (2013.01);
Abstract
A sealant film including a polyolefin layer containing polyolefin as a main ingredient, and a polycycloolefin layer as an outermost layer containing polycycloolefin as a main ingredient. The polycycloolefin contains two or more kinds of structural units selected from a structural unit (A) derived from a dicyclopentadiene compound, a structural unit (B) derived from a tetracyclododecene compound, and a structural unit (C) derived from a norbornene compound, and the polycycloolefin has a glass transition temperature less than or equal to 80° C.