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Overview of research on co-extruded protective film-2
- Mar 06, 2019 -

Production process of Co-extrusion protective film 

The coextrusion method has a coextrusion blow molding method and a coextrusion casting method.

The blow molding method is applicable under conditions in which the melt index of each component is low and the viscosity of the protective film is small. Generally, the adhesive layer is placed on the inner layer, and cooling is required during the production process to lower the temperature of the inflated film to below 50 °C before lamination; the casting method has a wide application range and is suitable for most conditions. Both are better, but the price of production equipment is higher. Before the co-extrusion protective film is produced, the liquid and powder raw materials are generally synthesized into a masterbatch to facilitate feeding.