Title:
ポリビニルアルコール系フィルム、ポリビニルアルコール系フィルムの製造方法、及び偏光膜
Document Type and Number:
Japanese Patent JP6883990
Kind Code:
B2
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
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Inventors:
Yuichi Teramoto
Seiichiro Hayakawa
Seiichiro Hayakawa
Application Number:
JP2016542783A
Publication Date:
June 09, 2021
Filing Date:
June 23, 2016
Export Citation:
Assignee:
Mitsubishi Chemical Corporation
International Classes:
G02B5/30; B29C41/26; B29C55/06
Foreign References:
| WO2014050697A1 |
Attorney, Agent or Firm:
Masahiko Nishito
Iisaki Aika
Yuko Saito
Shigeyasu Terao
Iisaki Aika
Yuko Saito
Shigeyasu Terao