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发明公开
CN109306097A 一种能够降解的塑料薄膜的制造方法 无效 - 撤回

一种能够降解的塑料薄膜的制造方法
摘要：
本发明提供一种能够降解的塑料薄膜的制造方法，(1)备料，选择薄膜级聚乙烯、薄膜级聚乳酸、聚乙二醇、亚磷酸三苯酯、聚氯乙烯薄膜回收料；(2)对聚氯乙烯薄膜回收料进行清洗、除杂、干燥；(3)将各原料进行混合，得到混合料；(4)将混合料注入塑料吹膜机的料仓，进行融化后挤出成膜；(5)成卷、裁剪、检测后打包制得成品。本发明中，除了采用聚乳酸外，还采用了一部分聚氯乙烯薄膜回收料，这些聚氯乙烯薄膜回收料在加热后能够与聚乳酸均匀的混合，并形成部分接枝反应，当这些塑料薄膜被废弃后，在一定温度及微生物的作用下，仍会产生分解，其中的聚氯乙烯部分也会同步降解，采用这种方法可以消耗一定量的非降解塑料薄膜。
摘要（英）：

The invention provides a manufacturing method for a degradable plastic film. The manufacturing method comprises the following steps: (1) preparing materials: selecting film-level polyethylene, film-level polylactic acid, polyethylene glycol, triphenyl phosphite and polyvinyl chloride film reclaimed materials; (2) performing cleaning, removing impurities and drying on the polyvinyl chloride film reclaimed materials; (3) mixing the raw materials to obtain a mixture; (4) injecting the mixture into a stock bin of a plastic film blowing machine, and melting and extruding to form a film; and (5) rolling, cutting, detecting and packaging to obtain a finished product. In addition to polylactic acid, one part of polyvinyl chloride film reclaimed materials are further adopted, and can be uniformly mixed with the polylactic acid after being heated, so that partial grafting reaction is formed; after the plastic films are wasted, decomposition still can be generated under action of certain temperature and microorganisms, and the polyvinyl chloride portion is also synchronously degraded; and certain amount of non-degradable plastic film can be consumed through the method.

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