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据专家介绍,目前市场上出售的保鲜膜从原材料上主要分为三大类：第一类是聚乙烯(PE或 LDPE),主要用于普通水果蔬菜等的包装；第二类是聚氯乙烯(PVC), 也可以用于食品包装,但它对人体的健康有一定的影响；第三类是聚偏二氯乙烯(PVDC),主要用于一些熟食、火腿等产品的包装。就原材料而言,聚乙烯和聚偏二氯乙烯类保鲜膜对人体相对安全。而使用聚氯乙烯类的则要小心了。制造过程中为了增加其黏性、透明度和弹性,聚氯乙烯保鲜膜中增加了一定量的增塑剂,
According to experts, currently on the market for the sale of plastic wrap from the raw materials can be divided into three categories: the first category is polyethylene (PE or LDPE), mainly for ordinary fruits and vegetables and other packaging; The second category is polyvinyl chloride (PVC), can also be used for food packaging, but it has a certain impact on human health; the third category is polyvinylidene chloride (PVDC), mainly for some cooked food, ham and other products packaging. In terms of raw materials, polyethylene and polyvinylidene chloride plastic wrap is relatively safe for human beings. The use of polyvinyl chloride should be careful. In the manufacturing process in order to increase its viscosity, transparency and flexibility, polyvinyl chloride plastic wrap adds a certain amount of plasticizer,