公开(公告)号：US20060062946A1

公开(公告)日：2006-03-23

申请号：US10524649

申请日：2003-08-19

申请人： Ekkhard Beer ,  Wolfram Goerlitz ,  Bernd Hoecker

发明人： Ekkhard Beer ,  Wolfram Goerlitz ,  Bernd Hoecker

IPC分类号： B32B27/10

CPC分类号： B32B27/32 ,  B32B15/085 ,  B32B27/08 ,  B32B27/10 ,  B32B2307/704 ,  B32B2317/12 ,  B32B2323/10 ,  B32B2439/80 ,  Y10T428/1303

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。