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塑料薄膜透明、轻便,常常用来包装食物。目前的塑料薄膜品种很多,有聚乙烯、聚丙烯、聚酯、聚酰胺、聚偏二氯乙烯六大类,大约300多种。塑料薄膜在制造过程中要加入增塑剂、稳定剂、润滑剂、着色剂。有的塑料薄膜比如聚氯乙烯在生产中还加入了铅和其他一些有毒物质,用这种塑料薄膜包装食物,薄膜中的铅和其他有毒物质就会污染食物,特别是长时间、直接包装食物,污染更加严重。如果经常吃受到污染的食物,毒素蓄积到一定量,会使人发生中毒,影响健康,甚至诱发癌症。
Plastic film is transparent and lightweight and is often used to package food. The current varieties of plastic film a lot, there are six major categories of polyethylene, polypropylene, polyester, polyamide, polyvinylidene chloride, about 300 kinds. Plastic film in the manufacturing process to join plasticizers, stabilizers, lubricants, colorants. Some plastic films, such as polyvinyl chloride, are also added with lead and other toxic substances in their production. Using this plastic film to pack food, lead and other toxic substances in the film can contaminate food, especially for long periods of time, directly packaging food Pollution is more serious. If you often eat contaminated food, toxins accumulated to a certain amount, will make people poisoning, affecting health and even induced cancer.