Linear low density polyethylene (LLDPE) is non-toxic, tasteless and odorless milky white particles with a density of 0.918~0.935g/cm3.It compared with LDPE, have high softening temperature and melt temperature, has good strength and toughness, rigidity, heat resistance, cold resistance is good wait for an advantage, but also has good environmental stress cracking resistance, resistance to impact strength, tear strength and other properties, and acid, alkali, organic solvent and widely used in industry, agriculture, medicine, health and daily life supplies, and other fields.