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:
Aug. 27, 2024
Filed:
Jan. 28, 2019
Nitto Denko Corporation, Ibaraki, JP;
Naofumi Kosaka, Ibaraki, JP;
Yosuke Shimizu, Ibaraki, JP;
Satoshi Honda, Ibaraki, JP;
Taiki Shimokuri, Ibaraki, JP;
Shou Takarada, Ibaraki, JP;
Masayuki Satake, Ibaraki, JP;
Kenichi Okada, Ibaraki, JP;
Atsushi Takashima, Ibaraki, JP;
Ginji Mizuhara, Ibaraki, JP;
Masayuki Okamoto, Ibaraki, JP;
Ryoko Asai, Ibaraki, JP;
NITTO DENKO CORPORATION, Ibaraki, JP;
Abstract
Provided is a PSA sheet having a PSA layer. The PSA layer includes a layer A forming at least one surface thereof. The PSA sheet has an adhesive strength N0 of 2.0 N/10 mm or greater, after one day at room temperature following application of the layer A side to a surface of an alkaline float glass plate as an adherend having a contact angle of 5°-10° with distilled water; has an N1 to N0 reduction rate of 30% or lower, wherein N1 is a water-resistant adhesive strength measured after stored at room temperature for one day, immersed in water for 30 minutes, taken out from the water and then residual water is wiped off, and has an N2 to NO reduction rate of 40% or higher, wherein N2 is a water-peel strength measured after stored at room temperature for one day, 20 μL distilled water is dropped onto the adherend and is allowed to enter a PSA layer/adherend interfacial edge. N2 is measured at a tensile speed of 300 mm/min at a peel angle of 180°.