Classification of polyethylene film

Low-density polyethylene films are generally made by blow molding and casting processes. The thickness of cast polyethylene film is uniform, but due to its high price, it is rarely used. Blow molded polyethylene film is made of blow molding grade PE particles blown by a blow molding machine. The cost is low, so it is the most widely used. Low-density polyethylene film is a semi-transparent, shiny, and soft film with excellent chemical stability, heat-sealability, water resistance and moisture resistance, freezing resistance, and boiling. Can be used for food cling film.

The density of low-density polyethylene film is about 0.92g/cm3. Low-density polyethylene film has good transparency, waterproof and moisture-proof; low tensile strength, high tensile elongation, easy to wrinkle film below 0.03mm, the tension control should be small, and the tension must be constant everywhere, especially It is more easily deformed when heated, causing difficulty in color registration. Therefore, when drying, the surface temperature of the film should not be too high (within 55 degrees).