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. 08, 2022
Filed:
May. 23, 2018
Applicant:
Nitto Denko Corporation, Ibaraki, JP;
Inventors:
Naoaki Higuchi, Ibaraki, JP;
Shuuhei Yamamoto, Ibaraki, JP;
Assignee:
NITTO DENKO CORPORATION, Ibaraki, unknown;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09J 7/38 (2018.01); C09J 7/22 (2018.01); B32B 7/14 (2006.01); B32B 27/06 (2006.01); C09J 133/08 (2006.01); C09J 7/25 (2018.01);
U.S. Cl.
CPC ...
C09J 133/08 (2013.01); B32B 7/14 (2013.01); B32B 27/065 (2013.01); C09J 7/22 (2018.01); C09J 7/255 (2018.01); C09J 7/38 (2018.01); C09J 7/385 (2018.01); C09J 2301/124 (2020.08); C09J 2301/20 (2020.08); C09J 2407/00 (2013.01); C09J 2429/00 (2013.01); C09J 2433/00 (2013.01); C09J 2467/006 (2013.01); C09J 2469/00 (2013.01); C09J 2475/00 (2013.01); Y10T 428/28 (2015.01);
Abstract
Provided is a PSA sheet capable of suitably preventing bubble formation caused by outgassing. This invention provides a PSA sheet comprising a PSA layer that forms an adhesive face. In an aging test where the adhesive face is press-bonded to a glass plate and stored at 50° C. for 24 hours, the PSA sheet has at least 5% post-aging non-bonding area Sa, with Sa defined as the ratio of all areas non-bonding to the glass plate relative to the total area of the adhesive face. The non-bonding areas have parts linearly extending along the adhesive face.