Title:
MULTILAYER BODY
Document Type and Number:
WIPO Patent Application WO/2021/200364
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a multilayer body comprising a front surface plate, a first bonding layer, a colored member, a second bonding layer, and a circular polarizing plate, in the listed order, wherein cracks are not easily formed in the colored member if repeated bending is carried out with the front surface plate side as the inner side, and when visually examining the external appearance of the multilayer body from the front surface plate side, rainbow unevenness is not easily seen. The multilayer body includes the front surface plate, the first bonding layer, the colored member, the second bonding layer, and the circular polarizing plate, and fulfills conditions (A) and (B). Condition (A): The ratio G'a/G'b of the storage modulus G'a of the first bonding layer at a temperature of 25°C to the storage modulus G'b of the second bonding layer at a temperature of 25°C is less than 50. Condition (B): The thickness Ta of the first bonding layer and the thickness Tb of the second bonding layer are both greater than 1.0 μm.
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Inventors:
SONG BYUNGHOON (KR)
JANG JU-YEUL (KR)
HONG SEUNGBAEK (KR)
JANG JU-YEUL (KR)
HONG SEUNGBAEK (KR)
Application Number:
PCT/JP2021/011867
Publication Date:
October 07, 2021
Filing Date:
March 23, 2021
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B5/30; B32B7/022; B32B7/023; G02B5/20; G02F1/1333; G02F1/1335; G02F1/13363; G06F3/041; G09F9/00
Foreign References:
| JP2020030395A | 2020-02-27 | |||
| JP2020019277A | 2020-02-06 | |||
| JP2011074308A | 2011-04-14 | |||
| JP2019131679A | 2019-08-08 | |||
| JP2016001232A | 2016-01-07 | |||
| JP2015118280A | 2015-06-25 | |||
| JP2010140393A | 2010-06-24 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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