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Multilayer, oriented, heat-sealable, highly sliding polypropylene film with improved barrier properties
Multilayer, oriented, heat-sealable, highly sliding polypropylene film with improved barrier properties
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机译:多层定向,可热封,高滑动性聚丙烯薄膜,具有改进的阻隔性能
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摘要
The present invention relates to oriented, heat-sealable polypropylene films having an improved water vapour barrier action at the same time as a considerably reduced coefficient of friction for packaging purposes, characterised in that they contain no polydimethylsiloxane and have the layer structure ABCBA, where a) C is the core layer comprising polypropylene and a hydrocarbon resin with a molecular weight of up to about 2000 g/mol and a softening point of above 130@, and from 0.05 to 0.5% by weight of erucamide, b) B are two hydrocarbon resin-free jacket layers of highly isotactic polypropylene having an isotacticity of 94%, where the ratio between the thickness of the jacket layer and the thickness of the base layer is between 0.01 and 0.1, and c) A are two top layers of a heat-sealable polyolefin copolymer or terpolymer, where these top layers contain at least one antiblocking agent, an antistatic and, as lubricant, from 0.05 to 0.5% by weight of erucamide.
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机译:本发明涉及定向的,可热封的聚丙烯膜,其具有改善的水蒸气阻隔作用,同时为包装目的显着降低了摩擦系数,其特征在于它们不包含聚二甲基硅氧烷并且具有层结构ABCBA,其中)C是由聚丙烯和分子量高达2000 g / mol且软化点高于130的烃树脂和0.05至0.5重量%的芥酸酰胺组成的核心层,b)B是两种烃全同立构规整度> 94%的高度等规聚丙烯的无树脂护套层,其中护套层的厚度与基础层的厚度之比在0.01和0.1之间,并且c)A是a的两个顶层可热封的聚烯烃共聚物或三元共聚物,其中这些顶层包含至少一种抗粘连剂,抗静电剂以及0.05-0.5重量%的芥酸酰胺作为润滑剂。
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