The plastic shopping bag is a packaging material made of polyolefin as the main raw material and suitable addition of other materials. Polyolefin mainly used polyethylene (PE), commonly known as soft gum, the main products include low-density polyethylene or high-pressure polyethylene (LDPE), high-density polyethylene or low pressure polyethylene (HDPE), linear low-density polyethylene (LLDPE) and Metallocene polyethylene (MLLDPE) four categories. In order to reduce its cost, most companies add about 30% calcium carbonate to fill plastic shopping bags, such as plastic shopping bags because of burning in the landfill without releasing poisonous gas. The national plastic shopping bag has just been introduced into the following three categories:
Ordinary plastic shopping bags-using polyolefin and fillers as raw materials, this type of plastic shopping bags do not have degradation performance, abandoned in the field will not degrade. This kind of plastic shopping bag has excellent recyclable, can be recycled many times. The performance of recycled materials is slightly reduced, but it can be used in shopping bags or garbage bags with low production performance requirements and less stringent color requirements. The key question is whether the problem can be recycled back.