Title:
POLYVINYL ALCOHOL FILM, POLARIZING FILM AND POLARIZING PLATE USING SAME, AND POLYVINYL ALCOHOL FILM PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/073638
Kind Code:
A1
Abstract:
A polyvinyl alcohol film that is 5-60 μm thick, that is 2 m wide or wider, and that is 2 km long or longer. The intersection angle θ (°) between the orientation axis (the slow axis) and the width direction (the TD direction) of the polyvinyl alcohol film is 20° or less, and the deviation Δθ (°) of the intersection angle θ is 20° or less. As a result, the polarizing film has excellent extensibility during the production of a polarizing film and makes it possible to produce a polarizing film that has high polarizing performance and little color unevenness. The present invention can, in particular, provide a polyvinyl alcohol film that does not break even during the production of a thin polarizing film.
Inventors:
KITAMURA SYUUICHI (JP)
TERAMOTO YUUICHI (JP)
HAYAKAWA SEIICHIROU (JP)
TERAMOTO YUUICHI (JP)
HAYAKAWA SEIICHIROU (JP)
Application Number:
PCT/JP2016/081792
Publication Date:
May 04, 2017
Filing Date:
October 27, 2016
Export Citation:
Assignee:
NIPPON SYNTHETIC CHEM IND CO LTD (JP)
International Classes:
G02B5/30; B29C55/08; G02F1/1335; G02F1/13363; B29K29/00; B29L7/00; B29L11/00
Domestic Patent References:
| WO2014050696A1 | 2014-04-03 |
Foreign References:
| JPH06300919A | 1994-10-28 | |||
| JP2004195875A | 2004-07-15 |
Attorney, Agent or Firm:
SAITOH Yukihiko et al. (JP)
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