What is the source material of the woven bag

The main raw material for foreign production is polyethylene (PE), and the domestic production is mainly polypropylene (PP), which is a thermoplastic resin obtained by polymerization of ethylene. In industry, it also includes copolymers of ethylene and a small amount of α-olefin. Polyethylene is odorless, non-toxic, feels like wax, has excellent low temperature resistance (minimum operating temperature can reach -70-100 ℃), good chemical stability, and can resist the erosion of most acids and alkalis (not resistant to oxidizing properties). Acid), insoluble in common solvents at room temperature, low water absorption, and excellent electrical insulation performance; but polyethylene is very sensitive to environmental stress (chemical and mechanical effects), and has poor heat aging resistance. The properties of polyethylene vary from variety to variety, mainly depending on the molecular structure and density.