Title:
METHOD FOR MANUFACTURING OPTICAL LAYERED SHEET AND METHOD FOR MANUFACTURING OPTICAL ARTICLE
Document Type and Number:
WIPO Patent Application WO/2023/210447
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a method for manufacturing an optical layered sheet having excellent appearance, and a method for manufacturing an optical article that includes the optical layered sheet. According to an embodiment of the present invention, there is provided a first method for manufacturing an optical layered sheet. The optical layered sheet includes a first optical sheet, a second optical sheet, and an adhesive layer. The first optical sheet and/or the second optical sheet is an unstretched polyvinyl alcohol film. This manufacturing method includes providing a first coating film of an adhesive composition including a functional pigment and an iso(thio)cyanate compound on at least one main surface of the first optical sheet, layering the second optical sheet on the first coating film to obtain a first layered body, and heat treating the first layered body at atmospheric pressure at a temperature of 80-200°C.
Inventors:
HATTORI YUKI (JP)
SHIMIZU YASUTOMO (JP)
MORI KATSUHIRO (JP)
SHIMIZU YASUTOMO (JP)
MORI KATSUHIRO (JP)
Application Number:
PCT/JP2023/015505
Publication Date:
November 02, 2023
Filing Date:
April 18, 2023
Export Citation:
Assignee:
TOKUYAMA CORP (JP)
International Classes:
G02B5/23; B32B7/12; G02C7/02; G02C7/12
Domestic Patent References:
| WO2019163728A1 | 2019-08-29 |
Foreign References:
| JP2016161838A | 2016-09-05 | |||
| JP2016168720A | 2016-09-23 | |||
| JP2012230317A | 2012-11-22 | |||
| JP2012242718A | 2012-12-10 | |||
| JP2003191404A | 2003-07-08 |
Attorney, Agent or Firm:
KATO Ryuta et al. (JP)
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