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1. 发明专利

JP2014059564A Method of manufacturing polarizing film 有权
标题翻译：制造极化膜的方法
公开(公告)号：JP2014059564A
公开(公告)日：2014-04-03
申请号：JP2013209811
申请日：2013-10-07
申请人： Kuraray Co Ltd , 株式会社クラレ
发明人： MORI YASUJIRO , NAKAI TOSHIO
IPC分类号： G02B5/30 , B29C55/06 , B29K29/00 , B29L7/00 , B29L11/00 , G02F1/1335
CPC分类号： B29C41/26 , B29D11/00644 , B29K2029/04 , B29K2995/0034 , C08J5/18 , C08J2429/04 , G02B5/3033
摘要： PROBLEM TO BE SOLVED: To provide a polarizing film which exhibits high absorbance and a high degree of polarization for light in a long wavelength region.SOLUTION: A method of manufacturing a polarizing film is provided, where a PVA-based polymer film having a crystal long period of 14.5 to 16.0 nm in water is put through processes of dyeing, uniaxial stretching, dye fixing, and drying. When the PVA-based polymer film is formed using a film forming apparatus having a plurality of drying rolls and heat treatment rolls, the film is dried such that Tin an equation (I) is between 60 and 75. T={T×(40-V)+T×(V-V)}/(40-V) (I), where Trepresents surface temperature (in °C) of a first drying roll and Vrepresents a volatilized portion (in mol%; between 10 and 30) of the film when peeled from the first drying roll, while Trepresents an average value (in °C) of the surface temperatures of second through final drying rolls and Vrepresents a volatilized portion (in mol%) of the film when peeled from the final drying roll.
摘要翻译：要解决的问题：提供对长波长区域的光具有高吸光度和高极化度的偏振膜。提供一种制造偏振膜的方法，其中具有晶体的PVA类聚合物膜通过染色，单轴拉伸，染色固定，干燥等工序，在水中长时间为14.5〜16.0nm。当使用具有多个干燥辊和热处理辊的成膜装置形成PVA类聚合物膜时，干燥膜，使得锡的等式（I）在60和75之间。T = {T×（40 -V）+ T×（VV）} /（40-V）（I），其中T表示第一干燥辊的表面温度（℃），V表示挥发部分（以摩尔％计;在10和30之间）为该薄膜当从第一干燥辊剥离时，而T表示第二至最终干燥辊的表面温度的平均值（℃），V表示从最终干燥辊剥离时的膜的挥发份数（以摩尔％计）。

2. 发明专利

JP2012215908A Method for manufacturing polarization film 有权
标题翻译：制造极化膜的方法
公开(公告)号：JP2012215908A
公开(公告)日：2012-11-08
申请号：JP2012172018
申请日：2012-08-02
申请人： Kuraray Co Ltd , 株式会社クラレ
发明人： MORI YASUJIRO , KAZAFUJI OSAMU , HIKASA SHINTARO , KATSUNO RYOJI
IPC分类号： G02B5/30 , C08J5/18 , G02F1/1335
CPC分类号： B29C41/26 , B29K2029/04 , B29K2995/0034 , G02B5/3025 , G02B5/3083
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a polarization film, using a PVA based polymer film, which enables the manufacture of a polarization film having high limit stretching ratio and excellent optical performance without fracturing even when uniaxially stretching at a high magnification, as a raw fabric film.SOLUTION: In a method for manufacturing a polarization film, using a PVA based polymer film satisfying the following formulas (I) and (II) or a PVA based polymer film satisfying the following formulas (I)-(III) as a raw fabric film, dyeing, uniaxial stretching, fixing processing and dry processing are performed, with the formula (I): Δn(MD)-0.1×10≤Δn(TD)≤Δn(MD)+0.25×10, (II): Δn(TD)≤2.5×10, and (III): 1.3×10≤Δn(MD)≤2.0×10(where, Δn(MD)is a value obtained by averaging birefringence in a machine flow direction of the PVA based polymer film in a film thickness direction, and Δn(TD)is a value obtained by averaging birefringence in a width direction of the PVA based polymer film in a film thickness direction.)
摘要翻译：解决的问题：为了提供使用PVA系聚合物膜制造偏振膜的方法，即使在单轴拉伸时也能够制造具有高极限拉伸倍率和优异的光学性能而不发生断裂的偏振膜高放大倍率，作为原料面料薄膜。解决方案：在制造偏光膜的方法中，使用满足下列通式（I）和（II）的PVA类聚合物膜或满足下式（I） - （III）的PVA类聚合物膜作为进行原始织物膜，染色，单轴拉伸，定影处理和干燥处理，式（I）：Δn（MD） Ave -0.1×10 - 3 ≤Δn（TD） Ave ≤Δn（MD） Ave + 0.25×10 < - - - - - - - - - - - - - - - - - - - - - - - - （3） / SP>和（III）：1.3×10 - 3 ≤Δn（MD） Ave ≤2.0×10 Ave 是通过对PVA类聚合物膜的机器流动方向的双折射进行平均而得到的值在膜厚方向上，Δn（TD） Ave 是将PVA系聚合物膜的宽度方向的双折射的膜厚d （C）2013，JPO＆INPIT

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