Linear low density polyethylene (LLDPE) is a molecular structure with very short comonomer branches formed on the main chain of linear ethylene by copolymerization of ethylene and a small amount of α-olefin. Its density is between 0.915 and 0.935g/cm3, and it is a copolymer. LLDPE is non-toxic, tasteless and odorless milky white particles with low density and high softening temperature and melting temperature. In addition to the properties of general polyolefin resins, LLDPE resin is particularly superior in tensile strength, tear strength, environmental stress cracking resistance, low temperature resistance, heat resistance and puncture resistance. Therefore, the main application fields of LLDPE resin are agricultural film, packaging film, wire and cable, pipe, coating products, etc.