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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 10525668 B1

PDFFull Text
Date of Patent:
Jan. 07, 2020

Filed:

Feb. 28, 2017

Pressure-sensitive adhesive sheet

Applicant:

Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;

Inventors:

Kenji Furuta, Ibaraki, JP;

Yoshio Terada, Ibaraki, JP;

Tadashi Takahashi, Ibaraki, JP;

Mitsuhiro Kanada, Ibaraki, JP;

Assignee:

NITTO DENKO CORPORATION, Ibaraki-shi, Osaka, JP;

Attorney:

Hauptman Ham, LLP

Primary Examiner:

Victor S Chang

Int. Cl.
CPC ...
B32B 7/12 (2006.01); B32B 27/36 (2006.01); B32B 37/12 (2006.01); C09J 133/06 (2006.01); C09J 7/38 (2018.01); C09J 7/22 (2018.01); C09J 7/29 (2018.01); C09J 7/28 (2018.01); B32B 15/082 (2006.01); B32B 15/085 (2006.01); B32B 15/088 (2006.01); B32B 15/09 (2006.01); B32B 15/12 (2006.01); B32B 15/18 (2006.01); B32B 15/20 (2006.01); B32B 27/08 (2006.01); B32B 27/10 (2006.01); B32B 27/28 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01);
U.S. Cl.
CPC ...
B32B 7/12 (2013.01); B32B 27/36 (2013.01); B32B 37/12 (2013.01); C09J 133/066 (2013.01); C09J 2201/122 (2013.01); C09J 2201/606 (2013.01); C09J 2400/163 (2013.01); C09J 2433/00 (2013.01);
Abstract

A pressure-sensitive adhesive sheet includes a pressure-sensitive adhesive layer and a substrate layer configured to support the pressure-sensitive adhesive agent layer. The pressure-sensitive adhesive layer has a storage modulus of 250 kPa or less at 23° C. The substrate layer has an elastic modulus of 1680 N/cm to 3000 N/cm both inclusive. The pressure-sensitive adhesive sheet shows a deviation amount less than 1.0 mm. The amount is the deviation amount of the pressure-sensitive adhesive sheet per 250 gf/cmof the sheet in a holding ability test at 80° C. after one hour from a time when the test is started.

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