发明授权
- 专利标题： Method of producing polarizing film
- 专利标题（中）： 偏光膜的制造方法
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申请号： US13520248申请日： 2011-11-29
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公开(公告)号： US08699135B2公开(公告)日： 2014-04-15
- 发明人: Shusaku Goto , Hiroaki Sawada , Takeharu Kitagawa , Minoru Miyatake
- 申请人： Shusaku Goto , Hiroaki Sawada , Takeharu Kitagawa , Minoru Miyatake
- 申请人地址： JP Ibaraki-shi
- 专利权人： Nitto Denko Corporation
- 当前专利权人： Nitto Denko Corporation
- 当前专利权人地址： JP Ibaraki-shi
- 代理机构： Westerman, Hattori, Daniels & Adrian, LLP
- 优先权： JP2010-280579 20101216; JP2011-110531 20110517
- 国际申请： PCT/JP2011/077468 WO 20111129
- 国际公布： WO2012/081390 WO 20120621
- 主分类号： G02B5/30
- IPC分类号： G02B5/30
摘要：
The present invention provides a method of producing a polarizing film having excellent optical characteristics. The method of producing a polarizing film of the present invention includes: forming a polyvinyl alcohol-based resin layer 12 on a thermoplastic resin substrate 11 to produce a laminate 10; dyeing the polyvinyl alcohol-based resin layer 12 of the laminate 10 with iodine; stretching the laminate 10; and covering, after the dyeing and the stretching, a surface of the polyvinyl alcohol-based resin layer 12 of the laminate 10 with a cover film having a moisture permeability of 100 g/m2·24 h or less, followed by heating of the laminate 10 under the state.
公开/授权文献
- US20120281279A1 METHOD OF PRODUCING POLARIZING FILM 公开/授权日：2012-11-08