一、塑料在现代包装中的地位和作用塑料进入包装领域后,立即向历史悠久的传统包装材料提出了挑战.从零开始,经过近卅年的竞争和发展,塑料已成为包装材料中与纸张、金属、玻璃并列的四大支柱之一.塑料的不断进取,迫使其它天然材料趋向淘汰或处于守势.包装材料的发展趋向是:纸张下降,塑料上升.塑料占有举足轻重的地位,是与它在包装工业中的生力军作用分不开的.今日世界商品多达千百万种,并在广泛的范围内流通.它们对包装既有共性的要求,又有特殊的个性要求.塑料不仅具备一般包装材 First, the plastic in the status and role of modern packaging Plastic into the packaging field immediately to the long history of the traditional packaging materials posed a challenge.From scratch, after nearly a year of competition and development, plastic has become the packaging materials and paper , Metal, glass, one of the four pillars.Plastic continuous improvement, forcing other natural materials tend to be eliminated or at a defensive trend.Development of packaging materials tend to: the decline of paper, plastic rise.Plastic occupy a decisive position, with it in the The role of the force in the packaging industry inseparable from today’s millions of goods in the world, and in a wide range of circulation.They have common requirements for packaging, but also have special personality requirements.Plastic not only have the general packaging material