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:
May. 12, 2020
Filed:
Mar. 18, 2019
Applicant:
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Inventors:
Assignee:
NITTO DENKO CORPORATION, Ibaraki-shi, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/012 (2006.01); C09J 7/38 (2018.01); G11B 21/10 (2006.01); C09J 7/20 (2018.01);
U.S. Cl.
CPC ...
C09J 7/381 (2018.01); C09J 7/201 (2018.01); C09J 7/385 (2018.01); G11B 5/012 (2013.01); G11B 21/106 (2013.01);
Abstract
Provided is a PSA sheet that has a high level of moisture resistance while maintaining good holding power with reduced gas emission. The PSA sheet provided by this invention comprises a moisture-impermeable layer and a PSA layer provided to one face of the moisture-impermeable layer. The PSA layer comprises a polymer A having a weight average molecular weight of 5×10or higher as a base polymer and a polymer B having a number average molecular weight of 1000 or higher and a weight average molecular weight lower than 5×10.