1、前言 　　随着国民经济的发展，包装作为一种产业在我国越来越受到重视，其重要作用也日趋显著。最近几年，我国的包装工业发展很快，特别是销售包装。据统计， 70％的商品销售包装达到了发达国家 80年代的水平，有的商品包装已接近发达国家现有的水平。但是，由于对运输性 1, Preface With the development of the national economy, packaging as an industry in our country more and more attention, its important role is also increasingly significant. In recent years, China’s packaging industry has developed rapidly, especially sales and packaging. According to statistics, 70% of the sales of goods packaging reached the level of the developed countries in the 1980s, and some of the commodity packaging is close to the current level of developed countries. However, due to the transportability