发明名称 Multi-Layer, Ethylene Polymer-Based Films with Novel Polypropylene Blend-Based Stiffening Layer
摘要 This invention discloses a multi-layer film for making pouches for containing flowable materials, said multi-layer film comprising generally five layers in order: inner sealant-layer, first interposed layer, the core layer, second interposed layer, and the outer sealant layer. The sealant and core layers are ethylene-based, and the interposed layers are polypropylene-based. The multi-layer film thickness is in the range of from about 35 microns to about 66 microns. The interposed layers comprise a novel polypropylene blend with a major component polypropylene and a minor component polypropylene, wherein the minor component polypropylene is a heterogeneous polypropylene interpolymer with a density in the range of from about 0.875 to about 0.91 g/cm3.
申请公布号 US2011252746(A1) 申请公布日期 2011.10.20
申请号 US201113086579 申请日期 2011.04.14
申请人 LIQUI-BOX CORPORATION 发明人 BRECK ALAN KEITH
分类号 B65B9/00;B32B7/02;B32B27/32 主分类号 B65B9/00
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