Woven bags are also called sack bags. It is a kind of plastic bag, which is used for packaging. It uses a plastic woven bag making machine to make various chemical plastic materials such as polyethylene and polypropylene into woven bags. Woven bags are mainly: Plastic woven bags are made of polypropylene as the main raw material, which are extruded and stretched into flat wires, and then weaved, braided, and bag-made.