Sealable, multilayer, coextruded packaging film, its use and process for its production
    5.
    发明申请
    Sealable, multilayer, coextruded packaging film, its use and process for its production 审中-公开
    可密封,多层共挤出包装膜,其使用和生产工艺

    公开(公告)号:US20060251876A1

    公开(公告)日:2006-11-09

    申请号:US10555619

    申请日:2004-05-04

    摘要: The invention relates to a sealable, multilayer, coextruded packaging film with high transparency and high tensile strength. The film is composed of at least one core layer A made from a polyolefin with high tensile strength together with low elongation, and of outer layers B and C arranged on the two sides. The core layer A comprises from 50 to 100 % by weight of cyclic olefin polymer (COC) having a Tg of at least 60 ° C. The outer layers B and C may comprise at least one sealable polymer and one functional polymer. Intermediate layers may be arranged between layer A and layers B and C improving adhesion between layers. This film has a total thickness in the range from 20 to 200 μm, the core layer A making up from 5 to 60% of the total thickness of the film. The film is used in “flow-pack” packages produced on form-fill seal machines, or as a cover film on thermoformed blister packages or on cups (lidding).

    摘要翻译: 本发明涉及一种具有高透明度和高拉伸强度的可密封,多层共挤出的包装薄膜。 膜由至少一个由具有高拉伸强度和低伸长率的聚烯烃制成的芯层A和布置在两侧的外层B和C组成。 芯层A包含50至100重量%的具有至少60℃的T N的环烯烃聚合物(COC)。外层B和C可以包含至少一种可密封聚合物 和一种官能聚合物。 中间层可以布置在层A和层B和C之间,改善了层之间的粘合性。 该膜的总厚度在20至200μm的范围内,芯层A占薄膜总厚度的5至60%。 该膜用于在成型填充密封机上生产的“流动包装”包装中,或用作热成型泡罩包装或杯子(盖子)上的覆盖膜。

    Multiply polyolefin sheet, method for making same and related use
    6.
    发明申请
    Multiply polyolefin sheet, method for making same and related use 审中-公开
    聚烯烃片材,制造方法和相关用途

    公开(公告)号:US20060062946A1

    公开(公告)日:2006-03-23

    申请号:US10524649

    申请日:2003-08-19

    IPC分类号: B32B27/10

    摘要: The invention relates to a multilayer polyolefin film composed of at least three layers, comprising a) a core layer A functioning as base layer and composed of at least one amorphous polyolefin or of a mixture of at least one semicrystalline polyolefin and 5.0% by weight or more of at least one amorphous polyolefin and b) on the two sides, outer layers B and C, which are identical or different, composed of a polyolefin (polyethylene, polypropylene) and/or a mixture composed of polypropylene and of an amorphous polyolefin. The films of the invention have very good thermoformability together with low shrinkage. The chemical structure of the core layer A gives exceptionally low water absorption and superior barrier action with respect to water vapor. The invention further relates to the use of this film and to a process for its production.

    摘要翻译: 本发明涉及由至少三层组成的多层聚烯烃膜,其包括a)用作基层并由至少一种无定形聚烯烃或至少一种半结晶聚烯烃和5.0重量%混合物组成的芯层A或 更多的至少一种无定形聚烯烃和b)在两面上,由聚烯烃(聚乙烯,聚丙烯)和/或由聚丙烯和无定形聚烯烃组成的混合物组成的相同或不同的外层B和C。 本发明的薄膜具有非常好的热成型性以及低收缩率。 核心层A的化学结构给出了非常低的吸水率和相对于水蒸汽的优异的屏障作用。 本发明还涉及该薄膜的使用及其生产方法。