Title:
POLY(VINYL ALCOHOL)-BASED FILM, PROCESS FOR PRODUCING POLY(VINYL ALCOHOL)-BASED FILM, AND POLARIZING FILM
Document Type and Number:
WIPO Patent Application WO/2016/208652
Kind Code:
A1
Abstract:
Provided is a poly(vinyl alcohol)-based film which is excellent in terms of dyeability and stretchability and which, even when produced as a continuous film having a larger width and a smaller thickness, can give a polarizing film that has a high degree of polarization and no unevenness of polarization. The poly(vinyl alcohol)-based film is characterized in that when the thickness is expressed by D (mm), the tension at the time when the film has been stretched 6 times in the running direction (MD direction) in 30ºC water is expressed by A (N/mm2), and the tension at the time when the film has been stretched 6 times in the running direction (MD direction) in 50ºC water is expressed by B (N/mm2), then the film satisfies the following relationships (1) and (2).
Relationship (1) 0.6≤D×A≤1.2
Relationship (2) 0.2≤D×B≤0.4
Inventors:
TERAMOTO YUUICHI (JP)
HAYAKAWA SEIICHIROU (JP)
HAYAKAWA SEIICHIROU (JP)
Application Number:
PCT/JP2016/068598
Publication Date:
December 29, 2016
Filing Date:
June 23, 2016
Export Citation:
Assignee:
NIPPON SYNTHETIC CHEM IND CO LTD (JP)
International Classes:
C08J5/18; B29C41/24; G02B5/30; B29K29/00; B29L7/00; B29L11/00
Domestic Patent References:
| WO2014050697A1 | 2014-04-03 | |||
| WO2009028141A1 | 2009-03-05 |
Foreign References:
| JP2002236212A | 2002-08-23 |
Attorney, Agent or Firm:
SAITOH Yukihiko et al. (JP)
Masahiko Nishifuji (JP)
Masahiko Nishifuji (JP)
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