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一、前言塑料作为一种新型的包装材料,以其优异的包装性能,在保护商品、宣传商品价值方面,独领风骚,使塑料编织包装(主要是包括塑料编织袋和柔性集装袋,下文叙述简称‘塑编包装用袋’)成为我国出口包装中总使用量仅次于纸包装的重要出口包装之一,其用量逐年增加,使用范围日益广泛,特别是矿产品及化工原料等出口货物包装用量更大。然而塑料普遍都存在着老化的问题。二、塑料老化的原因和分析塑料老化是内因和外因两方面综合因素作用的结果。内因:我国出口塑编包装用袋一般用聚乙
I. Introduction Plastic as a new type of packaging material, with its excellent packaging performance, in the protection of goods, promote the value of goods, dominate the plastic woven packaging (mainly including plastic woven bags and flexible container bags, the following Narrative referred to as ’Plastic woven bag’) become China’s export packaging total consumption is second only to paper packaging, one of the important export packaging, the amount increased year by year, the use of a growing range of products, especially minerals and chemical raw materials exports Larger amount of packaging. However, plastic generally has the problem of aging. Second, the reasons and analysis of plastic aging Plastic aging is the result of both internal and external factors. Internal Cause: China’s export plastic bags used in general polyethylene bags