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CN103648750B 具有视觉上相异的拉伸区域的热塑性膜及其制造方法 失效 - 权利终止

具有视觉上相异的拉伸区域的热塑性膜及其制造方法
摘要：
热塑性膜包括与多个未拉伸区域在视觉上相异的多个间断的拉伸区域。这些拉伸区域可以是白色的、不透明的且非多孔的。这些具有视觉上相异的拉伸区域的热塑性膜可以成型为袋子以用作垃圾桶衬里或食品储存装置。另外，将热塑性膜拉伸以产生非多孔的、白色的且不透明的拉伸区域的方法包括将具有一种热塑性材料和一种空隙化剂的膜进行增量式拉伸。
摘要（英）：

Thermoplastic films include intermittent stretched regions that are visually distinct from un-stretched regions. The stretched regions can be white, opaque, and non porous. The thermoplastic films with visually-distinct stretched regions can be formed into bags for use as trash can liners or food storage. Additionally, methods of stretching thermoplastic films to create non-porous, white, and opaque stretched regions include incrementally stretching a film of a thermoplastic material and a voiding agent.

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