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. 23, 2025
Filed:
Sep. 17, 2021
Toray Industries, Inc., Tokyo, JP;
Masanori Miyashita, Otsu, JP;
Kentaro Mori, Otsu, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
The present invention relates to a laminate including a film A, a film B, and a film C in this order via adhesive layers, in which the adhesive layers includes an adhesive layer AB and an adhesive layer BC, the adhesive layer AB exists between the films A and B, and the adhesive layer BC exists between the films B and C, a maximum value of a thermal shrinkage rate of the film B at 150° C. for 30 minutes is 0.1% or more and 3.0% or less, the adhesive layer AB and the adhesive layer BC each have a Martens hardness of 1.0 N/mmor more and 4.0 N/mmor less, and an adhesion area ratio between the films A and B via the adhesive layer AB and an adhesion area ratio between the films B and C via the adhesive layer BC are both 95% or more.