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    • 102. 发明授权
    • Materials for packaging light-sensitive materials
    • 用于包装光敏材料的材料
    • US4576865A
    • 1986-03-18
    • US541349
    • 1983-10-12
    • Mutsuo Akao
    • Mutsuo Akao
    • B32B27/08B32B27/20B32B27/28B65D65/16G03C3/00B32B27/00
    • B32B27/08B65D65/16Y10T428/264Y10T428/2826Y10T428/31906Y10T428/31913Y10T428/31928Y10T428/31935
    • A material for packaging light-sensitive materials including a composite sheet (laminate) of a substrate and a thermoplastic resin layer, a layer of said sheet including light-shielding materials, wherein said thermoplastic resin layer includes a surface layer and an intermediate layer which are melt-coextruded, said surface layer being comprised of thermoplastic resin of polyolefins or ethylene copolymer containing substantially no less than 95 mol % of ethylene, said intermediate layer being comprised of one or more copolymers selected from:(a) a copolymer including 7-30 mol % of acrylic ester and/or methacrylic ester with the balance being ethylene provided that the ester is comprised of an alkyl group having 1-8 carbon atoms, and(b) a copolymer (EVA) including 7-20 mol % of vinyl acetate with the balance being ethylene.
    • 一种用于包装感光材料的材料,其包括基材和热塑性树脂层的复合片(层叠体),所述片材包括遮光材料的层,其中所述热塑性树脂层包括表面层和中间层, 熔融共挤出,所述表面层由含有基本上不小于95mol%乙烯的聚烯烃或乙烯共聚物的热塑性树脂组成,所述中间层由一种或多种选自以下的共聚物组成:(a)包含7-30 摩尔%的丙烯酸酯和/或甲基丙烯酸酯,余量为乙烯,条件是该酯由具有1-8个碳原子的烷基组成,和(b)包含7-20摩尔%乙酸乙烯酯的共聚物(EVA) 其余为乙烯。