Plastic Extrusion Melt Pump Application Scope

Plastic extrusion melt pump by virtue of its stable extrusion, accurate measurement and pressure stabilization and other functions, in the field of plastics processing is widely used, the following is the specific scope of its application:

First, film and sheet extrusion

Application Scenario: In the production of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) and other plastic films and sheets, the melt pump can ensure the stability of the melt pressure and flow rate, and improve the thickness uniformity and surface quality of the film and sheet.

Advantage: the production of food packaging film, for example, the use of melt pumps, film thickness deviation can be controlled within a very small range, to meet the food packaging industry's strict requirements for film thickness uniformity.

Second, pipe extrusion

Application Scenario: In the production of various plastic pipes, such as water supply, drainage, gas pipe, etc., the melt pump can stabilize the melt pressure, so that the wall thickness of the pipe is more uniform, to improve the mechanical properties and service life of the pipe.

Advantage: For large-diameter PE water supply pipe, the application of melt pump can ensure that the pipe in the extrusion process in all parts of the pressure is the same, to avoid uneven wall thickness caused by pressure fluctuations in the pipe, to improve the pressure-bearing capacity of the pipe.

Third, profile extrusion

Application Scenario: In the production of plastic profiles such as door and window profiles, decorative profiles, etc., the melt pump helps to improve the dimensional accuracy and surface finish of the profiles, and reduce the deformation and defects of the profiles.

Advantage embodiment: In the production of PVC door and window profiles, the melt pump can accurately control the flow and pressure of the melt to make the cross-section size of the profile more accurate and the surface smoother, and improve the sealing and aesthetics of the doors and windows.

Fourth, wire and cable extrusion

Application Scenario: In the production of wire and cable insulation and sheath layer, the melt pump can ensure the uniformity of the melt extrusion, improve the electrical properties and mechanical properties of wire and cable.

Advantage: for high-voltage cable insulation layer extrusion, the melt pump can provide stable melt pressure to ensure uniform thickness of the insulation layer, to avoid localized discharges due to uneven thickness and other problems, improve the safety and reliability of the cable.

Fifth. Co-extrusion composite extrusion

Application Scenario: In the multi-layer co-extrusion composite extrusion process, the melt pump can separately control the flow and pressure of different layers of melt to realize the precise composite of each layer of material and improve the performance and quality of composite products.

Advantage: in the production of multi-layer composite food packaging film, the melt pump can ensure that the thickness ratio of each layer of material is accurate, to achieve the advantages of different material properties complement each other, such as improving the barrier properties of packaging film, freshness and strength.

Sixth, special plastics processing

Application Scenario: For some special plastics, such as engineering plastics (polycarbonate PC, polyamide PA, etc.), thermoplastic elastomers (TPE, TPV, etc.) and fluorine plastics (polytetrafluoroethylene PTFE, etc.), melt pumps are able to adapt to the characteristics of its high viscosity, easy to degrade, etc., to ensure that the processing process goes smoothly.

Advantage: When processing fluoroplastics, due to its high viscosity and poor melt fluidity, it is difficult to realize stable extrusion by traditional extrusion process. The melt pump can effectively convey the fluoroplastic melt through its special rotor structure and sealing design to improve the quality and production efficiency of the products.

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