我国很快就要加入 WTO了，商品流通将更进一步向全球化发展。如何使我国的出口商品在全球化的市场中战胜越来越多的份额，其影响的因素很多，其中如何提高出口商品的货架寿命 ?如何开发出具有自主知识产权的高科技产品 ?是两个很重要的课题。具体到包装业界，对阻隔型包装薄膜 Our country will soon join the WTO, and the circulation of commodities will further develop towards globalization. How to make China’s export goods to overcome more and more shares in the globalized market has many factors which affect the shelf life of export commodities and how to develop high-tech products with independent intellectual property rights? Very important issue. Specific to the packaging industry, the barrier type packaging film