根据有关资料显示,目前,我国规模以上(指年销售额在500万元以上)的塑料包装企业有1500多家,各种塑料袋生产企业有6000多家。近年来,随着食品、饮料、乳品、医药、化妆品、洗涤用品、啤酒、调味品产量的增长,对塑料及塑料复合材料的软包装需求越来越大。以牛奶和奶粉为例,70%～80%都是采用塑料软包装的,除一部分用瓶装、铝箔包装外,主要是用塑料软包装袋 According to relevant information, at present, there are more than 1,500 plastic packaging enterprises in China above designated size (with annual sales of more than 5 million yuan), and more than 6,000 plastic bag manufacturers. In recent years, with the increasing production of foodstuffs, beverages, dairy products, pharmaceuticals, cosmetics, cleaning products, beer and condiments, there is a growing demand for flexible packaging of plastic and plastic composite materials. Milk and milk, for example, 70% to 80% are plastic flexible packaging, with the exception of part of the bottle, foil packaging, the main is the use of plastic flexible bags