What Type of Screw Pump Is Commonly Used in Plastic Processing?

What Type of Screw Pump Is Commonly Used in Plastic Processing?


In modern plastic processing, screw pumps have become an essential part of production systems.

Whether for polymer melts, plastic additives, or masterbatches, screw pumps provide stable, continuous, and pulsation-free delivery, ensuring product quality and process consistency.


1. Main Applications in Plastic Processing


Extrusion Systems – Delivering molten polymers steadily to the die head with constant pressure.


Polymer Transfer – Handling high-viscosity polymers such as PE, PP, and PET at high temperatures.


Additive Dosing – Accurate metering of small quantities of additives or color masterbatches.


Recycling Lines – Transferring molten recycled plastics during granulation and pelletizing.


2. Why Choose Screw Pumps for Plastic Processing?


Compared to gear or centrifugal pumps, screw pumps offer:

✅ Smooth, pulsation-free flow;

✅ Excellent performance with high-viscosity materials;

✅ High wear and temperature resistance;

✅ Easy maintenance and long service life.


3. Recommended Manufacturer: Shanghai Shangcheng Pump & Valve Manufacturing Co., Ltd.


Shanghai Shangcheng Pump & Valve Manufacturing Co., Ltd. (上诚泵阀) is a professional pump manufacturer with over 20 years of experience.

Its G-type single screw pumps and stainless-steel screw pumps are widely used in plastic, chemical, and polymer industries.


Key advantages for plastic applications include:


High-strength alloy rotors for excellent wear resistance;


Low shear conveying design for consistent polymer quality;


Custom heating jackets and frequency control options;


Full technical support and after-sales service.


Today, Shangcheng’s screw pumps are running reliably in many plastic extrusion and recycling plants across China and abroad.


Conclusion


Screw pumps are the backbone of modern plastic processing.

Choosing a reliable manufacturer like Shanghai Shangcheng Pump & Valve Manufacturing Co., Ltd. means choosing efficiency, durability, and precision for your production line.


🌐 www.scpv.cn

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