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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 9878523 B1

PDFFull Text
Date of Patent:
Jan. 30, 2018

Filed:

Mar. 14, 2014

Laminated film

Applicant:

Toray Industries, Inc., Tokyo, JP;

Inventors:

Takayuki Uto, Otsu, JP;

Kazuyoshi Ota, Otsu, JP;

Yoshihiro Masuda, Otsu, JP;

Wataru Goda, Otsu, JP;

Assignee:

TORAY INDUSTRIES, INC., Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Thao T Tran

Int. Cl.
CPC ...
B32B 27/08 (2006.01); B32B 27/36 (2006.01); B32B 27/40 (2006.01); B32B 27/18 (2006.01); B32B 27/20 (2006.01); B32B 27/30 (2006.01); B32B 27/42 (2006.01);
U.S. Cl.
CPC ...
B32B 27/08 (2013.01); B32B 27/18 (2013.01); B32B 27/20 (2013.01); B32B 27/306 (2013.01); B32B 27/36 (2013.01); B32B 27/40 (2013.01); B32B 27/42 (2013.01); B32B 2250/02 (2013.01); B32B 2250/24 (2013.01); B32B 2250/42 (2013.01); B32B 2270/00 (2013.01); B32B 2307/304 (2013.01); B32B 2307/306 (2013.01); B32B 2307/412 (2013.01); B32B 2307/50 (2013.01); B32B 2307/518 (2013.01); B32B 2307/538 (2013.01); B32B 2307/714 (2013.01); B32B 2307/734 (2013.01); B32B 2457/12 (2013.01); B32B 2457/20 (2013.01);
Abstract

[Problem] Provided is a laminated film which exhibits good general adhesiveness to PVAs, EVAs and PVBs having a wide range of saponification degrees as well as good moist heat-resistant adhesiveness. [Means for Solution] The laminated film comprises a resin layer (α) composed of an aliphatic urethane structure-containing resin composition (I) on at least one side of a thermoplastic resin film, the resin layer (α) satisfying the following properties (i) and (ii): (i) the resin layer (α) has a surface free energy (sum of the dispersion force and the polar force) of not less than 30 mN/m and not greater than 45 mN/m; and (ii) the resin layer (α) has a polar force of not less than 5.0 mN/m and not greater than 15.0 mN/m.

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