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七十年代以来,塑料包装得到了迅速的发展。在比较发达的国家中,塑料包装的应用约占塑料制品总量的30％左右。塑料包裝的生产结构,主要由原料、机械、制品加工等三大体系组成。另外,还有装潢设计,印刷(包括立体丝网印刷、凹版轮转印刷等)体系,前部分属于塑料工业结构体系,是塑料工业很重要的一个分支。据轻工业部统计,塑料包装制品的品种按其用途,可分为:轻包装袋(包括各种小规格彩印包装膜袋,共挤薄膜袋,纸、铝、塑料复合膜袋);重包装袋(包括聚乙烯重包装膜袋,聚丙烯编织袋,纸、塑料复合膜袋,聚丙烯编织复合膜袋);
Since the seventies, plastic packaging has been rapid development. In more developed countries, plastic packaging applications account for about 30% of the total plastic products. Plastic packaging production structure, mainly by the raw materials, machinery, product processing and other three major components. In addition, there are decorating design, printing (including three-dimensional screen printing, rotogravure printing, etc.) system, the former part of the plastic industrial structure, is a very important branch of the plastics industry. According to statistics from the Ministry of Light Industry, the varieties of plastic packaging products can be classified into light packaging bags (including all kinds of small-format color printing film bags, coextrusion film bags, paper, aluminum and plastic composite film bags), heavy bags (Including polyethylene re-packaging film bags, polypropylene woven bags, paper, plastic composite film bags, polypropylene woven bags);