发明名称 |
Process for producing polarizing film, polarizing film, polarizing plate, optical film, and image display |
摘要 |
The present invention pertains to a method of fabricating a polarizing film by uniaxially stretching a resin film such as a polyvinyl alcohol-based film in a fabrication process including a swelling step and a dyeing step following the swelling step, comprising the steps of immersing a resin film in bath liquids in at least two or more swelling baths in sequence in the above-mentioned swelling step, wherein at least a bath temperature of a swelling bath located at a Nth position from the front-stage side is set at a temperature which is higher than a bath temperature of a swelling bath located at a (N+M)th position by 3° C. or more (both N and M are specified positive integers).
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申请公布号 |
US2007111017(A1) |
申请公布日期 |
2007.05.17 |
申请号 |
US20050581610 |
申请日期 |
2005.07.25 |
申请人 |
NITTO DENKO CORPORATION |
发明人 |
MASUDA TOMOAKI;TSUCHIMOTO KAZUKI;FUJITA YUTAKA |
分类号 |
B05D3/10;B05D5/06;B32B27/00 |
主分类号 |
B05D3/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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