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发明公开
CN103313838A 长条状聚合物膜的制造方法和聚合物膜、λ/4板、偏振片及液晶显示装置 有权

长条状聚合物膜的制造方法和聚合物膜、λ/4板、偏振片及液晶显示装置
摘要：
本发明提供长条状聚合物膜的制造方法，其含有如下工序：1)将先行的原卷膜的后端部和后行的原卷膜的前端部沿接合线重叠而接合的工序；2)一边连续输送被接合的上述原卷膜，一边利用多个把持件担载两端部而进行倾斜拉伸，做成聚合物膜的工序，其中，倾斜拉伸如下地进行：在倾斜拉伸后得到的聚合物膜的面内慢轴和在倾斜拉伸后得到的聚合物膜的宽度方向所成的角度为40～50°的范围内，并且先行的原卷膜的后端部和后行的原卷膜的前端部的接合如下地进行：聚合物膜的接合线与聚合物膜的宽度方向所成的角度φ1、以及聚合物膜的面内慢轴和上述聚合物膜的宽度方向所成的角度θ1满足下述式(I)。式(I)：｜φ1－θ1｜≤10°。
摘要（英）：

Provided is a method for producing a continuous polymer film that involves: a step (1) for overlapping and bonding the rear end section of a preceding raw film and the front end section of a following raw film, along a bonding line; and a step (2) for supporting both end sections by means of a plurality of gripping tools and obliquely stretching the bonded raw film while conveying the bonded raw film in order to produce a polymer film. The oblique stretching is performed such that the angle formed between the in-plane slow axis of the polymer film obtained after oblique stretching and the width direction of the polymer film obtained after oblique stretching is within the range of 40-50 DEG . In the bond between the rear end section of the preceding raw film and the front end section of the following raw film, the angle fai(1) between the bonding line for the polymer film and the width direction of the polymer film and the angle theta(1) between the in-plane slow axis of the polymer film and the width direction of the polymer film fulfill formula (I). Formula (I):|fai(1)-theta(1)|<=10 DEG .

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