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Home / News / Industry News / What is a Planetary Screw Extruder?
Author: WeiBo Date: Aug 15, 2025

What is a Planetary Screw Extruder?

1. Unique Planetary Screw Design

The core of the Planetary Screw Extruder lies in its unique planetary screw structure. This design employs planetary screws in the plasticizing section or throughout the entire screw, enabling more thorough mixing and plasticizing of materials during processing. The planetary screw design ensures that the material undergoes stronger shearing and kneading actions between the screw and barrel clearance, thereby enhancing mixing and plasticizing efficiency.

2. Application of Forced Feeding Device

The Planetary Screw Extruder uses a forced feeding device to ensure that the material enters the extrusion system at a sufficient speed. This device prevents bridging in the hopper, ensuring the continuity and stability of the material. The design of the forced feeding device allows the material to enter the extrusion system uniformly, thereby improving production efficiency and product quality.

3. Precise Temperature Control System

The Planetary Screw Extruder includes a water-cooling circulation system for the screw and barrel in the feeding section, as well as an oil heating circulation system for the planetary section. This precise temperature control system ensures stable temperature control throughout the entire extrusion process. The combination of water-cooling and oil heating systems enables the equipment to maintain stable temperatures under different processing conditions, ensuring the stability of material performance during processing.

What Advantages Does Zhoushan Microwave Screw Machinery Co., LTD's Planetary Screw Extruder Have Compared to Traditional Extruders?

1. Higher Mixing and Plasticizing Efficiency

The Planetary Screw Extruder produced by Zhoushan Microwave Screw Machinery Co., LTD generates stronger shearing and kneading actions on materials during processing, resulting in higher mixing and plasticizing efficiency. This unique structure ensures that materials are thoroughly mixed and plasticized during processing, improving production efficiency and product quality. Compared to traditional extruders, the Planetary Screw Extruder offers higher mixing and plasticizing efficiency, better meeting the production needs of the plastic products industry.

2. Larger Heat Exchange Area

The Planetary Screw Extruder has a larger contact area, facilitating heat exchange. The heat exchange area is more than five times larger than that of a single-screw extruder, enabling better temperature control during processing and ensuring that materials are plasticized and mixed at appropriate temperatures. This larger heat exchange area allows the Planetary Screw Extruder to better control temperatures during processing, avoiding material performance changes caused by excessively high or low temperatures, thereby improving product quality and consistency.

3. Applicable to Various Materials

The Planetary Screw Extruder is not only suitable for processing heat-sensitive materials such as PVC but is also widely used for mixing general plastics and engineering plastics. The versatility of this equipment makes it have a broad application prospect in the plastic products industry, capable of meeting the processing needs of different materials. The Planetary Screw Extruder produced by Zhoushan Microwave Screw Machinery Co., LTD has significant advantages in material applicability, capable of meeting the diverse needs of different customers.

4. Precise Temperature Control

The Planetary Screw Extruder ensures precise temperature control throughout the entire extrusion process through a water-cooling circulation system for the screw and barrel in the feeding section and an oil heating circulation system for the planetary section. This precise temperature control ensures the stability of material performance during processing, improving product quality and consistency. Compared to traditional extruders, the Planetary Screw Extruder offers more precise temperature control, better meeting the processing needs of different materials.

Professional Production and Research

1. Rich Production Experience

Since its establishment in 1990, Zhoushan Microwave Screw Machinery Co., LTD has been dedicated to the production and research of plastic machinery, possessing rich production experience and professional knowledge. The company introduces foreign screw machinery technology and processes, continuously enhancing its production capabilities and technical levels, providing high-quality Planetary Screw Extruders to customers.

2. Large Professional Production Base

The company owns a production workshop of more than 10,000 square meters and employs more than 60 people, making it a diversified large professional production base in China. The company integrates precision screw barrels and mechanical machining plants, capable of providing comprehensive services from design, production to after-sales service, meeting the diverse needs of customers.

3. High-End Market Positioning

Zhoushan Microwave Screw Machinery Co., LTD is positioned in the high-end market and mainly exports to countries and regions such as the United States, Germany, Dubai, Vietnam, and Thailand. The company cooperates with numerous plastic production and engineering machinery factories, becoming an important supplier of mechanical parts in China. The company has won widespread recognition and praise from customers with its high-quality products and excellent services.

4. Credibility First, Service Supreme

Zhoushan Microwave Screw Machinery Co., LTD adheres to the principle of credibility first and service supreme, providing customers with cost-effective products. The company values long-term cooperation with customers, offering high-quality after-sales service and technical support, helping customers solve problems encountered in the production process, improving customers' production efficiency and product quality.

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