Although LLDPE and LDPE in the past belong to the same density range, their basic physical properties and molding processing characteristics are different due to their different molecular structures and melting rheological behaviors.

Linear low density polyethylene is non-toxic, tasteless and odorless milky white particles with a density of 0.918~0.935g/cm3. Compared with LDPE, it has higher softening temperature and melting temperature, high strength, good toughness, high rigidity, good heat resistance, cold resistance and other advantages, as well as good resistance to environmental stress cracking, impact strength, tear strength and other properties, and can withstand acid, alkali, organic solvents and so on, and is widely used in industry, agriculture, medicine, health and daily necessities and other fields.