The characteristics of PVC printing film. PVC printing film is generally made by blow molding casting. The thickness of cast polyethylene PVC film is uniform, but due to its high price, it is rarely used at present. Blow-molded polyethylene PVC film is blown blow-molded PE particles through a blow molding machine. The cost is low, so it is the most widely used.

     Low-density polyethylene PVC film is a translucent, shiny, soft-textured PVC film, with excellent chemical stability, heat-sealability, water resistance moisture resistance, freezing resistance, boiling. Its main disadvantage is its poor oxygen barrier. It is often used as the inner layer of PVC film for composite flexible packaging materials, it is also the most widely used large amount of plastic packaging PVC film, which accounts for about the consumption of plastic packaging PVC film. More than 40%.

       Since the polyethylene molecule does contain polar groups, has high crystallinity, low surface free energy, the PVC film has poor printing performance poor adhesion to ink adhesives, so it should be used before printing lamination. Need surface treatment.

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