What are woven bags made of

      The main raw material for foreign production is polyethylene (PE), and the main domestic production is polypropylene (PP), which is a thermoplastic resin prepared by polymerization of ethylene. In industry, copolymers of ethylene and small amounts of α-olefin are also included. Polyethylene odorless, feel like wax, with high low temperature resistance (low service temperature up to -70 ~ -100℃), good chemical stability,

     Resistance to most acid and alkali erosion (not resistant to acid with oxidation properties), insoluble in general solvents at room temperature, small water absorption, high electrical insulation performance; However, polyethylene is sensitive to environmental stresses (chemical and mechanical effects) and has poor thermal aging resistance. The properties of polyethylene vary from species to species, mainly depending on the molecular structure and density.