Title:
COVERED OPTICAL ADHESIVE SHEET
Document Type and Number:
WIPO Patent Application WO/2023/095657
Kind Code:
A1
Abstract:
An optical adhesive sheet (X), as a covered optical adhesive sheet according to the present invention, comprises an optical adhesive sheet (10), a transparent separation liner (20), and a surface protection film (30), in this order in the thickness direction (H). The optical adhesive sheet (10) has a first surface (11) and a second surface (12) on the reverse side from the first surface (11). The transparent separation liner (20) is disposed on the first surface (11). The surface protection film (30) has an adhesive surface (30a) and is affixed to the transparent separation liner (20) via the adhesive surface (30a). A first peeling force between the surface protection film (30) and the transparent separation liner (20) under the conditions of a peeling angle of 180° and a pulling speed of 300 mm/minute is smaller than a second peeling force between the transparent separation liner (20) and the optical adhesive sheet (10) under said conditions.
Inventors:
YAMAMURA KAZUHIRO (JP)
FUJIHARA ARATA (JP)
FUJIHARA ARATA (JP)
Application Number:
PCT/JP2022/042207
Publication Date:
June 01, 2023
Filing Date:
November 14, 2022
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
C09J7/38; C09J7/29; C09J7/40; G02B5/30
Domestic Patent References:
| WO2019146553A1 | 2019-08-01 | |||
| WO2020218806A1 | 2020-10-29 |
Foreign References:
| JP2018013727A | 2018-01-25 | |||
| JP2018109093A | 2018-07-12 | |||
| JP2019044119A | 2019-03-22 | |||
| JPH05157914A | 1993-06-25 |
Attorney, Agent or Firm:
OKAMOTO, Hiroyuki et al. (JP)
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