Laminated Non Woven Bag | Non woven shopping bags are non-woven fabrics made of plastic. Many people think that cloth is a natural material, but it is actually a misunderstanding. Commonly used non-woven raw materials are polypropylene (PP for short in English, commonly known as polypropylene) or polyethylene terephthalate (PET for short in English, commonly known as polyester). The raw material of plastic bags is polyethylene. Although the names of the two materials are similar, but the chemical structure is very different