Title:
POLARIZING FILM AND PRODUCTION METHOD OF THE SAME, OPTICAL FILM AND IMAGE DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2018092187
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a production method of a polarizing film by which the polarizing film can be prevented from curling while adhesion performance of an adhesive layer between a polarizer and a transparent protective film is increased.SOLUTION: The present invention provides a production method of a polarizing film having a first transparent protective film disposed on one surface of a polarizer and a second transparent protective film disposed on the other surface via an adhesive layer. The method includes an adhesion step of adhering the polarizer to the first transparent protective film and adhering the polarizer to the second transparent protective film via the adhesive layer that is obtained by first irradiating the first transparent protective film side with active energy rays and then irradiating the second transparent protective film side with active energy rays to cure an active energy ray-curable adhesive composition. The first transparent protective film and the second transparent protective film have a transmittance of less than 5% for rays at a wavelength of 365 nm.SELECTED DRAWING: Figure 2
Inventors:
SAITO TAKESHI
SHINAGAWA MASA
IKEDA TETSURO
YAMAZAKI TATSUYA
OMINE TOSHIKI
SHUDO SHUNSUKE
KUNISHIMA KENTARO
TSUCHINAGA MAKOTO
SHINAGAWA MASA
IKEDA TETSURO
YAMAZAKI TATSUYA
OMINE TOSHIKI
SHUDO SHUNSUKE
KUNISHIMA KENTARO
TSUCHINAGA MAKOTO
Application Number:
JP2018025997A
Publication Date:
June 14, 2018
Filing Date:
February 16, 2018
Export Citation:
Assignee:
NITTO DENKO CORP
International Classes:
G02B5/30; G02F1/1335
Domestic Patent References:
| JP2011052161A | 2011-03-17 | |||
| JP2012144690A | 2012-08-02 | |||
| JP2019021201A | 2019-02-07 | |||
| JP2012052000A | 2012-03-15 | |||
| JP2012131981A | 2012-07-12 | |||
| JP2009001655A | 2009-01-08 |
Foreign References:
| WO2008050603A1 | 2008-05-02 |
Attorney, Agent or Firm:
Patent Business Corporation Unias International Patent Office