Oriented multilayer heat sealable packaging film capable of withstanding
high altitude effects
    1.
    发明授权
    Oriented multilayer heat sealable packaging film capable of withstanding high altitude effects 失效
    定向多层可热封包装薄膜能够承受高空作用

    公开(公告)号:US5527608A

    公开(公告)日:1996-06-18

    申请号:US364143

    申请日:1994-12-27

    摘要: A biaxially oriented heat sealable multilayer film structure, suited for use in high altitude applications, which comprises:(a) a core substrate having two surfaces, comprising i) a layer of homopolymer polyolefin and ii) a layer of block copolymer of ethylene and propylene having a MFR of 1 to 10, adjacent to at least one side of i);(b) a polymeric heat sealable layer on one surface of said core substrate, said heat sealable layer comprising a polymeric material selected from the group consisting of a terpolymer of ethylene, propylene and butene-1, a random copolymer of ethylene and propylene, a random copolymer of propylene and butene-1, and blends thereof; and optionally,(c) a high density polyethylene (HDPE) layer adjacent to the other surface of said core substrate (a).

    摘要翻译: 一种适用于高空应用的双轴取向的可热封多层膜结构,其包括:(a)具有两个表面的芯基底,包括:i)均聚物聚烯烃层;以及ii)乙烯和丙烯的嵌段共聚物层 具有1至10的MFR,与i)的至少一侧相邻; (b)在所述芯基板的一个表面上的聚合物可热密封层,所述可热封层包括选自乙烯,丙烯和丁烯-1的三元共聚物,乙烯和丙烯的无规共聚物, 丙烯和丁烯-1的无规共聚物及其共混物; 和(c)与所述芯基板(a)的另一表面相邻的高密度聚乙烯(HDPE)层。