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进店逛逛纸塑复合袋用途广泛，种类繁多，现在集装袋的生产原料主要有下面几种：一是聚乙烯(PE);PE是世界上产量合成树脂，也是消耗量塑料包装材料。传统的塑料包装PE材料已经快要被淘汰了，因为它的污染真是太大了。聚乙烯产品又分为低密度、中密度和高密度三种。其中高密度聚乙烯(HDPE)因具有较高的结晶度，其硬度、气密性、机械强度、耐化学性能都较好，高压低密度聚乙烯所含有的低分子量聚乙烯，较易溶于油脂，所以含聚乙烯制的包装如长期盛装食用油，可将其低分子聚乙烯溶出，而使油脂多的食品带有哈喇味二是聚氯乙烯(PVC)：PVC大致可分为硬质品、软制品和糊状制品三类。用注拉吹法生产的PVC瓶无缝线，瓶壁薄厚均匀。三是聚丙烯(PP)：因其透明度高、光洁、加工性好。
Paper plastic composite bags are widely used and of various kinds. Now there are mainly the following kinds of raw materials for the production of container bags: first, polyethylene (PE); PE is a synthetic resin produced in the world, and also a plastic packaging material for consumption. The traditional PE material for plastic packaging is about to be eliminated, because it is so polluted. Polyethylene products are divided into low density, medium density and high density. High density polyethylene (HDPE) has high crystallinity, good hardness, air tightness, mechanical strength and chemical resistance. The low molecular weight polyethylene contained in high-pressure low-density polyethylene is easy to dissolve in grease. Therefore, if the package containing polyethylene is filled with edible oil for a long time, its low molecular polyethylene can be dissolved out, and the food with more grease will have harrass. The second is polymerization Vinyl chloride (PVC): PVC can be roughly divided into hard products, soft products and paste products. The PVC bottle produced by injection, drawing and blowing has no suture, and the wall thickness of the bottle is even. Third, polypropylene (PP): because of its high transparency, bright and clean, good processability.
