What materials of plastic are suitable for processing with a plastic film extrusion melt pump?
Plastic film extrusion melt pumps are suitable for processing a wide range of plastic materials. Some of the most commonly used plastics that are compatible with these pumps include, but are not limited to, the following:
PET (Polyethylene Terephthalate): PET is widely used in the production of packaging materials such as bottles and films, particularly for applications requiring high transparency and strength.
PP (Polypropylene): PP is a versatile plastic often used in food packaging, such as containers and bags, due to its chemical resistance and relatively low cost.
PE (Polyethylene): PE is a common plastic in film extrusion, especially for applications like agricultural films, packaging films, and trash bags, known for its flexibility and durability.
PC (Polycarbonate): PC is noted for its high impact resistance, optical clarity, and wide temperature resistance range, making it suitable for applications like CDs, DVDs, and certain types of lenses.
PVC (Polyvinyl Chloride): PVC is commonly used in the production of pipes, window frames, and various types of films and sheets due to its flame retardancy, chemical resistance, and mechanical strength.
These plastics can be processed using extruder gear pumps in film extrusion applications because they exhibit suitable melt rheological properties that allow them to be efficiently conveyed and pressurized by the pump. The melt pump works by creating a consistent pressure and flow rate of the molten plastic, which is crucial for achieving uniform film thickness and quality.
In addition, the choice of plastic material also depends on specific application requirements such as film thickness, tensile strength, clarity, chemical resistance, and temperature resistance. The melt pump should be selected and configured to match the melt viscosity, temperature, and pressure requirements of the plastic being processed.
Furthermore, it's worth noting that the compatibility of the plastic material with the melt pump also depends on the pump's design, materials of construction, and operating conditions. Therefore, it is advisable to consult with the pump manufacturer or a plastics processing expert to ensure the best match between the plastic material and the melt pump for optimal processing results.
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