Title:
LAYERED FILM AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/054030
Kind Code:
A1
Abstract:
Provided is a layered film that strikes a highly excellent balance between the initial adhesive force onto an optical sheet surface, suppression of an increase in adhesion, suppression of lifting after heating, and suppression of contamination onto the adherend. The layered film has a resin layer (b) on one surface of a base material layer (a), and the resin layer (b) is a resin composition containing a hydrogenated copolymer composition and a tackifying resin. The hydrogenated copolymer composition satisfies conditions (1) to (3). (1) The hydrogenated copolymer composition is constituted from a polymer block having a vinyl aromatic monomer unit as the main body and a polymer block having a conjugated diene monomer unit as the main body, the polymer block having a conjugated diene monomer unit as the main body being present at each end. (2) The content of the vinyl aromatic monomer unit in the entirety of the hydrogenated copolymer composition is 5 to 30% by weight. (3) The melt flow rate of the hydrogenated copolymer composition is 3 to 30 g/10 minutes.
More Like This:
Inventors:
YASUOKA SATOSHI (JP)
INOUE NORIHIDE (JP)
MACHIDA TETSUYA (JP)
INOUE NORIHIDE (JP)
MACHIDA TETSUYA (JP)
Application Number:
PCT/JP2020/031412
Publication Date:
March 25, 2021
Filing Date:
August 20, 2020
Export Citation:
Assignee:
TORAY ADVANCED FILM CO LTD (JP)
International Classes:
B32B27/30; C09J7/38; C09J11/08; C09J153/02
Domestic Patent References:
| WO2015098664A1 | 2015-07-02 | |||
| WO2017043532A1 | 2017-03-16 | |||
| WO2019044637A1 | 2019-03-07 | |||
| WO2001068785A1 | 2001-09-20 |
Foreign References:
| JP2012001630A | 2012-01-05 | |||
| JP2001348548A | 2001-12-18 |
Attorney, Agent or Firm:
ICHIJO, Chikara (JP)
Download PDF: