发明授权
US4400428A Sealable multilayer films 失效
可密封多层膜

Sealable multilayer films
摘要:
A composite film comprising a polypropylene basis film being laminated at least on one surface with a layer combination of a heat sealable layer with an additive combination, an adhesion promotion layer, a gas-barrier layer, and an adhesion promotion layer and optionally a further heat sealable layer.
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