Title:
OPTICAL PRESSURE-SENSITIVE ADHESIVE SHEET
Document Type and Number:
WIPO Patent Application WO/2023/047917
Kind Code:
A1
Abstract:
This pressure-sensitive adhesive sheet (10) is an optical pressure-sensitive adhesive sheet. When the pressure-sensitive adhesive sheet (10) is applied to a glass plate and the laminate is thereafter subjected to a heating/pressing treatment under the conditions of 50°C, 0.5 MPa, and 15 minutes and then to a low-speed peeling test in which the pressure-sensitive adhesive sheet (10) is peeled from the glass plate under the conditions of 25°C, a peel angle of 180°, and a pulling speed of 30 mm/min, then the pressure-sensitive adhesive sheet (10) has a peel force F1 of 5 N/20 mm or greater. When a first glass plate and a second glass plate are bonded to each other in the thickness direction with the pressure-sensitive adhesive sheet (10) disposed therebetween and the resultant laminate is thereafter subjected to the heating/pressing treatment and then to a low-speed pulling test in which the first and second glass plates are pulled from each other in the opposite thickness directions under the conditions of 25°C and a pulling speed of 5 mm/min, then the pressure-sensitive adhesive sheet (10) has an adhesive force B1 in peeling of 0.9 N/mm2 or greater.
Inventors:
WATANABE KENTO (JP)
Application Number:
PCT/JP2022/033080
Publication Date:
March 30, 2023
Filing Date:
September 02, 2022
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
C09J201/00; C09J7/38
Foreign References:
| JP2018027995A | 2018-02-22 | |||
| JP2020122140A | 2020-08-13 | |||
| JP2021102708A | 2021-07-15 | |||
| JP2019089975A | 2019-06-13 |
Attorney, Agent or Firm:
OKAMOTO, Hiroyuki et al. (JP)
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