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    • 5. 发明公开
    • 적어도 3층을 갖는 투명 폴리에스테르 필름, 그 용도 및그 제조방법
    • 具有至少三层的透明聚酯薄膜,其生产工艺及其使用
    • KR1020020013731A
    • 2002-02-21
    • KR1020010047783
    • 2001-08-08
    • 미쓰비시 폴리에스테르 필름 지엠비에치
    • 페이퍼헤르버트힐커트고트프리드
    • B32B27/36
    • B32B27/36Y10S428/91Y10T428/24942Y10T428/24967Y10T428/24975Y10T428/265Y10T428/31667Y10T428/31681Y10T428/31786
    • PURPOSE: A transparent polyester film having at least three layers, and its use and production process are provided to improve adhesion between the individual layers, and to ensure a simple and cost-effective production process. CONSTITUTION: In the transparent, biaxially oriented polyester film with a base layer, which comprises at least 80 weight percent of thermoplastic polyester, and with at least one intermediate layer, and with at least one outer layer, the outer layer is composed of a polymer, of a mixture of polymers/copolymers, or of a copolymer, which contains at least 85 weight percent of ethylene 2,6-naphthalate units and up to 15 weight percent of ethylene terephthalate units, and/or up to 15 weight percent of units derived from cycloaliphatic or aromatic diols and/or dicarboxylic acids, the intermediate layer is composed of a polymer, of a mixture of polymers/copolymers, or of a copolymer, which contains at least 3 weight percent of ethylene 2,6-naphthalate units, and up to 97 weight percent of ethylene terephthalate units, and/or up to 97 weight percent of units derived from cycloaliphatic or aromatic diols and/or dicarboxylic acids; the Tg2 value of the polyester film is above the Tg2 value of the base layer but below the Tg2 value of the outer layer.
    • 目的:具有至少三层的透明聚酯膜,其使用和制造方法被提供以改善各层之间的粘合性,并且确保简单且具有成本效益的生产工艺。 构成:在具有基层的透明双轴取向聚酯膜中,其包含至少80重量%的热塑性聚酯,以及至少一个中间层,以及至少一个外层,外层由聚合物 聚合物/共聚物或共聚物的混合物,其含有至少85重量%的2,6-萘二甲酸乙二醇酯单元和至多15重量%的对苯二甲酸乙二醇酯单元,和/或至多15重量%的单元 衍生自脂环族或芳族二醇和/或二羧酸的中间层由聚合物,聚合物/共聚物或共聚物的混合物组成,其含有至少3重量%的2,6-萘二甲酸乙二醇酯单元, 和至多97重量%的对苯二甲酸乙二醇酯单元,和/或至多97重量%的衍生自脂环族或芳族二醇和/或二羧酸的单元; 聚酯膜的Tg2值高于基层的Tg2值,但低于外层的Tg2值。