Oriented multilayer heat sealable packaging film capable of withstanding
high altitude effects
    11.
    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。

    Biaxially oriented HDPE multilayer film
    13.
    发明授权
    Biaxially oriented HDPE multilayer film 失效
    双轴取向HDPE多层膜

    公开(公告)号:US06387529B1

    公开(公告)日:2002-05-14

    申请号:US08998148

    申请日:1997-12-24

    申请人: Robert G. Peet

    发明人: Robert G. Peet

    IPC分类号: B32B2708

    摘要: The present invention relates to a biaxially oriented multilayer film structure having (i) a core substrate of high density polyethylene; and (ii) an additional layer of syndiotactic polypropylene on at least one surface of the core substrate. Optionally, the film of the present invention includes at least one heat sealable layer on the outer surface of the additional layer.

    摘要翻译: 本发明涉及一种双轴取向多层膜结构,其具有(i)高密度聚乙烯的芯基板; 和(ii)核心基材的至少一个表面上的间同立构聚丙烯的附加层。 任选地,本发明的膜在附加层的外表面上包括至少一个可热封层。

    Method for producing improved polymeric films
    18.
    发明授权
    Method for producing improved polymeric films 失效
    制备改性聚合物薄膜的方法

    公开(公告)号:US06632383B1

    公开(公告)日:2003-10-14

    申请号:US09667138

    申请日:2000-09-21

    申请人: Robert G. Peet

    发明人: Robert G. Peet

    IPC分类号: B29C4706

    摘要: A method for producing an improved coextruded polymeric film is disclosed. First, a base layer containing a polymeric matrix and at least one additional layer on at least one side of the base layer are coextruded. If the coextruded polymeric film is to be opaque, the base layer also contains at least one cavitating agent. Next, the coextruded multi-layer film is cooled. Finally, the coextruded multi-layer film is oriented in at least the machine direction (MD). At least the base layer of the coextruded polymeric film contains a fluoropolymer. The inclusion of the fluoropolymer in at least the base layer of the coextruded polymeric film provides a more even distribution of polymer flow through a die, which in turns leads to improved film gauge uniformity.

    摘要翻译: 公开了一种制备改进的共挤出聚合物膜的方法。 首先,将包含聚合物基质和至少一个基层上至少一个侧面上的至少一个附加层的基底层共挤出。 如果共挤出的聚合物膜是不透明的,则基底层还含有至少一种空穴剂。 接着,将共挤出的多层膜冷却。 最后,共挤出的多层膜至少在纵向(MD)上取向。 至少共挤出的聚合物膜的基层含有含氟聚合物。 含氟聚合物在共挤出的聚合物膜的至少基础层中的包含提供聚合物流过模具的更均匀的分布,这又导致改进的膜规均匀性。