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:
Mar. 28, 2017
Filed:
Sep. 08, 2014
Applicant:
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Inventors:
Assignee:
NITTO DENKO CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 7/12 (2006.01); C09J 7/02 (2006.01); C09J 153/02 (2006.01);
U.S. Cl.
CPC ...
C09J 7/0246 (2013.01); C09J 7/0221 (2013.01); C09J 7/0289 (2013.01); C09J 153/02 (2013.01); C09J 2201/16 (2013.01); C09J 2433/00 (2013.01); C09J 2433/006 (2013.01); C09J 2453/00 (2013.01); Y10T 428/249983 (2015.04); Y10T 428/266 (2015.01);
Abstract
This invention provides a PSA sheet comprising a PSA layer (A) constituting an adhesive face and a viscoelastic layer (B) supporting the PSA layer (A). The PSA layer (A) comprises, as a base polymer (A), a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound. The base polymer (A) comprises 30% by mass or more of a diblock copolymer. The viscoelastic layer (B) has a thickness of 200 μm or larger.