近年来,由于石油价格的上涨,国内用于塑料包装袋的主要原材料——低密度聚乙烯和高密度聚乙烯等大幅上涨,已超过了历史上的最高价格。原材料涨价使得生产成本提高,给使用新原料生产塑料包装袋的厂家带来了压力。而对再生塑料回收利用,并以此为主要原料生产塑料包装袋的企业却带 In recent years, due to rising oil prices, the major raw materials used in plastic bags in China, such as low density polyethylene and high density polyethylene, surged by the highest price in history. The rising raw material costs have led to increased production costs, putting pressure on manufacturers of plastic bags that use new raw materials. Recycled plastic recycling and use it as the main raw material for the production of plastic bags but with