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    Method of packaging a thermoplastic composition with a film having a low complex viscosity and corresponding packaged article
    8.
    发明授权
    Method of packaging a thermoplastic composition with a film having a low complex viscosity and corresponding packaged article 有权
    用具有低复数粘度的膜和相应的包装制品包装热塑性组合物的方法

    公开(公告)号：US06430898B1

    公开(公告)日：2002-08-13

    申请号：US09468444

    申请日：1999-12-21

    申请人： Peter Remmers ,  Joachim Baumung ,  Michelle M. Chanak ,  Kevin W. McKay ,  Thomas Wittkopf

    发明人： Peter Remmers ,  Joachim Baumung ,  Michelle M. Chanak ,  Kevin W. McKay ,  Thomas Wittkopf

    IPC分类号： B65B5514

    CPC分类号： B65B63/08 ,  B29B13/022 ,  B29K2105/0097

    摘要： The present inventors have discovered that an easily measured property, namely complex viscosity, directly relates to physical film compatibility and have further identified a class of polyolefin materials, which are particularly amenable to exhibiting such properties. It is important to note that this discovery assumes that the film material is first chemically compatible with the thermoplastic composition to be packaged. The invention is particularly useful for low viscosity thermoplastic compositions having a Brookfield viscosity of less than about 10,000 cPs at 350° F., such as pressure sensitive hot melt adhesive compositions which are typically applied by melting the packaged adhesive composition in a melt tank wherein the melt tank lacks an active mixing means. The invention is also useful for hot melt adhesives that are applied by application means that are very sensitive to inhomogeneity of the combination of molten hot melt adhesive and molten packaging material such as spraying, screen printing, foaming and gravure coating hot melt application techniques.

    摘要翻译： 本发明人已经发现，容易测量的性质，即复合粘度直接涉及物理膜相容性，并且进一步鉴定了一类特别适于展现这种性能的聚烯烃材料。 重要的是要注意，这一发现假定膜材料首先与要包装的热塑性组合物化学相容。本发明特别适用于在350°F下Brookfield粘度小于约10,000cPs的低粘度热塑性组合物。 ，例如压敏热熔粘合剂组合物，其通常通过将包装的粘合剂组合物熔化在熔体槽中来进行熔融，其中熔体槽缺乏主动混合装置。 本发明对于通过施加方式施加的热熔粘合剂也是有用的，该方法对熔融热熔粘合剂和熔融包装材料的组合（例如喷涂，丝网印刷，发泡和凹版涂布热熔涂布技术）的组合非均匀性非常敏感。