Title:
OPTICAL LAYERED BODY
Document Type and Number:
WIPO Patent Application WO/2021/132030
Kind Code:
A1
Abstract:
Provided is an optical layered body in which it is possible to appropriately form a detachment starting point between a protective film (β) and a resin layer or another layer on the resin layer, without causing any lifting or detachment in the interface between the resin layer and a release sheet (α). This optical layered body includes a release sheet (α), an optical film having a resin layer disposed on one of the outermost surfaces, and a protective film (β). The resin layer has the release sheet (α) stacked directly thereon. The protective film (β) is stacked on the resin layer, directly or via another layer, from the other outermost surface side of the optical film. The resin layer is made of a cured product of a curable composition containing a curable compound. The relation of A1>A2 is satisfied between a detachment force A1 that is required to detach the release sheet (α) from the resin layer at a low-speed detachment condition of 0.3 m/min and an adhesive force A2 that is generated when detaching the protective film (β) from the resin layer, or the other layer, at the low-speed detachment condition of 0.3 m/min.
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Inventors:
KINOSHITA HIROKI (JP)
FURUYA TAKUMI (JP)
FURUYA TAKUMI (JP)
Application Number:
PCT/JP2020/047235
Publication Date:
July 01, 2021
Filing Date:
December 17, 2020
Export Citation:
Assignee:
LINTEC CORP (JP)
International Classes:
C09J123/00; B32B7/02; B32B7/06; C09J7/38
Domestic Patent References:
| WO2018016346A1 | 2018-01-25 | |||
| WO2018181004A1 | 2018-10-04 | |||
| WO2011010599A1 | 2011-01-27 |
Foreign References:
| JP2017043058A | 2017-03-02 | |||
| JP2019048426A | 2019-03-28 |
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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