The packaging bag refers to a bag used for packaging various articles, so that the goods are conveniently transported during production and distribution, and are easy to store. According to the production process, the packaging bags are often divided into plastic packaging bags and composite packaging bags; according to the production raw materials: high-pressure polyethylene plastic bags, low-pressure polyethylene plastic bags, polypropylene plastic bags, PVC plastic bags, etc.; : vest bag, straight bag, three-dimensional bag, square bottom bag. Sealing pockets, plastic strip bags, shaped bags, etc. According to statistics, 80% of the used plastic bags are finally transported to the garbage dumps in the same way as general garbage, and only 7 percent of the plastics are recycled.
Since bags are widely used in daily life and industrial production, and the general plastic bags will cause pollution to the global environment for hundreds of years after use, it is an urgent problem to design the bags to be green and pollution-free.