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    • 2. 发明公开
    • 셀룰로오스 아실레이트 필름과 이를 이용한 편광판
    • 纤维素醋酸盐膜和偏光板使用电影
    • KR1020030040114A
    • 2003-05-22
    • KR1020020070065
    • 2002-11-12
    • 후지필름 홀딩스 가부시끼가이샤
    • 사카마키사토시
    • C08J5/18
    • C08J5/18B32B27/08C08J2301/10G02B1/105G02B1/14G02B5/3033Y10T428/24769Y10T428/31971
    • PURPOSE: To provide a cellulose acylate film which is suitable for the production of a polarizing plate, resistant to curling in water, and excellent in processability. CONSTITUTION: In each of the roll drying parts 16 and 18 of an apparatus 10 for producing the film 26, at least a part is a high temperature drying zone for supplying drying air of at least 115°C for drying. In the zone, (1) the air is supplied from the support surface 26A side of the film 26, (2) the air is supplied from the air surface 26B side of the film 26 to control the flow velocity of the drying air to be blown to the film 26 to be 3 m/s or below, or (3) the air is supplied from both sides of the film 26. When the film 26 is immersed in water of 25°C, the radius of curvature of the curled film 26 is at least 25 mm. When the film 26 is divided into two in the thickness direction, the plasticizer content ratio between the support surface 26A and the air surface 26B side of the film 26 is 1.2-2.0.
    • 目的:提供适合制造偏光板的纤维素酰化物膜,耐水性卷曲,加工性优异。 构成:在用于制造膜26的装置10的每个辊干部件16和18中,至少一部分是用于供应至少115℃的干燥空气进行干燥的高温干燥区域。 在该区域中,(1)从膜26的支撑面26A侧供给空气,(2)从膜26的空气面26B侧供给空气,将干燥空气的流速控制为 吹塑到薄膜26上为3m / s以下,或者(3)从薄膜26的两面供给空气。当将薄膜26浸入25℃的水中时,卷曲的曲率半径 薄膜26至少为25mm。 当薄膜26在厚度方向上分成两部分时,薄膜26的支撑表面26A和空气表面26B侧之间的增塑剂含量比为1.2-2.0。