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US5344889A Polystyrene adhering heat-sealable plastic film 失效
聚苯乙烯粘合热封塑料薄膜

Polystyrene adhering heat-sealable plastic film
摘要:
The invention relates to a heat-sealable plastic film PF with an at least two-stage construction ranging in thickness up to 400 micrometer, that is suitable for tightly sealing plastic containers, comprising:a) a high molecular weight or crosslinked polymer P with a molecular weight in excess of 50,000 and a glass transition point Tg of
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