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Patent Searching and Data


Title:
OPTICAL LAMINATE AND PEELING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/205727
Kind Code:
A1
Abstract:
[Problem] To provide an optical laminate capable of favorably peeling a surface protective film and a peeling method. [Solution] The optical laminate sequentially comprises: a surface protective film; a polarizing laminate including a polarizing plate having a protective layer on one or both surfaces of a linearly polarizing layer; and an adhesive layer. The surface protective film is provided to be peelable with respect to the polarizing laminate, and the thickness of the polarizing laminate is 120 μm or less. The planar view shape of the optical laminate is a shape having at least one notched part in which one corner portion of a quadrangular shape is notched, and the notched part has a shape notched along a notch line passing through a first notch start point P1 and a second notch start point P2 respectively set on a first side and a second side constituting an apex of the corner portion. The first notch start point P1 and the second notch start point P2 are set so that the distances from the apex are 0.1 mm or more and 0.5 mm or less.

Inventors:
TAKATSUKI AKIRA (JP)
SHIRAISHI TAKAYUKI (JP)
MATSUMOTO DAISUKE (JP)
Application Number:
PCT/JP2021/003881
Publication Date:
October 14, 2021
Filing Date:
February 03, 2021
Export Citation:
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Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B5/30; B32B7/023; C09J7/29; C09J7/38; C09J201/00
Domestic Patent References:
WO2017026079A12017-02-16
Foreign References:
JP2001166141A2001-06-22
JP2017181597A2017-10-05
JP2016062029A2016-04-25
JP2020038254A2020-03-12
JP2019166583A2019-10-03
JP2014224963A2014-12-04
JP2012226343A2012-11-15
JP2018180512A2018-11-15
JP2019191556A2019-10-31
JP2008083210A2008-04-10
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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