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    • 6. 发明公开
    • 광학용 피복필름
    • 光学涂膜
    • KR1020020046202A
    • 2002-06-20
    • KR1020010077661
    • 2001-12-08
    • 도요보 가부시키가이샤
    • 구마노가쯔후미오다나오노부이토아키라
    • C08J5/18
    • G02B1/14G02B1/105G02B1/16Y10T428/28Y10T428/2891Y10T428/2896Y10T428/31565Y10T428/31786Y10T428/31797
    • PURPOSE: An optical coating film is provided, to reduce the optical defect considerably by controlling the number of defects of specific shape on a base film to be below the special number. CONSTITUTION: The optical coating film comprises a base film which is a transparent biaxially oriented thermoplastic resin film with a thickness of 50 micrometer or more; and a coated film which is formed on at least one side of the base film, has an adhesive modified resin layer, and contains defects of 100/m¬2 with a depth or 1 micrometers or more and a length of 3 mm or more. Preferably the number of the defects of vertical direction is less than 50/m¬2, wherein the defects of vertical direction means the defects whose longest direction is deviated from the vertical direction of the film by ±45 degree or less; and the number of the defects of horizontal direction is less than 50/m¬2, wherein the defects of horizontal direction means the defects whose longest direction is deviated from the horizontal direction of the film by ±45 degree or less.
    • 目的:提供一种光学涂层膜,通过将基膜上的特定形状的缺陷数量控制在特殊数量以下,显着减少光学缺陷。 构成:光学涂膜包括基膜,其为厚度为50微米以上的透明双轴取向热塑性树脂膜; 和形成在基膜的至少一侧上的涂膜具有粘合剂改性树脂层,并且具有深度或1微米以上且长度为3mm以上的100 / m 2的缺陷。 优选地,垂直方向的缺陷数小于50 / m·2,其中垂直方向的缺陷是指最长方向偏离膜垂直方向±45度以下的缺陷; 并且水平方向的缺陷数小于50 / m·2,其中水平方向的缺陷是指最长方向偏离膜的水平方向的缺陷±45度以下。