Migration of chemical substances from plastic packaging materials into foods has been widely concerned which may contaminate foods and finally endanger people's health.
塑料包装材料内含化学物向食品的迁移会造成食品污染并最终危害消费者的健康，近年来受到国内外广泛关注。
However, the main structure of plastic flexible packaging materials are plastic polymers, has some permeability to gas, and therefore can not fully replace the metal and glass packaging.
然而塑料软包装材料主体结构是塑料聚合物，对气体有一定的渗透性，因此并不能完全代替金属、玻璃包装。
It can be used in production of anti-counterfeiting plastic film, paper and other packaging materials.
可用于生产防伪塑料薄膜，纸和其他包装材料。
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