装粉状和粒状产品的包装袋,是建材、化工、食品、粮食等行业必不可少的包装物品。近几年由于复合包装水泥袋的品种从单一向多元化、多层次发展,并在价格和市场的作用下,相继推出各类复合包装袋。从全国目前的状况看:多层纸袋、纸/塑编复合袋、塑编袋、维/纸复合袋、纸筋袋五种袋型同时并存。由于国家建材总局在 Containing powder and granular products, bags, building materials, chemicals, food, food and other industries indispensable packaging items. In recent years, due to the variety of composite packaging cement bags from a single to diversified, multi-level development, and in the price and market, have introduced various types of composite bags. From the current state of the country to see: multi-layer paper bags, paper / plastic woven bags, plastic woven bags, fiber / paper bags, paper bags of five bags at the same time coexist. As the State Building Materials Bureau in