PP Woven Shopping Bags | PP, the abbreviation of polypropylene, which is a thermoplastic resin material that produced by the polymerization of propylene. Woven, or weaving is a method of putting many polypropylene tapes together from warp and weft directions to form them as pp woven fabric for some certain applications. To cut the tube shape of pp woven fabric into specific length, then sew it by one side, and let another side open, it then can be called a pp woven bag.