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Single Screw Extruder

A single screw extruder is a widely used plastic extrusion machine designed for continuous extrusion of compatible thermoplastic materials. According to the material, finished-product design, and required output, it uses a rotating screw inside a heated barrel to melt, mix, and transport plastic materials before forming them through an extrusion die. It can be integrated with pipe, profile, sheet, or other extrusion equipment.

Application: Pipes, Profiles, Sheets, Pellets
Material: PE, PP, ABS, PS, PC, PVC, TPE

EANS single screw extruders are suitable for processing PE, PP, PVC, and recycled plastic materials. They are commonly used in plastic pipe production lines, profile extrusion lines, sheet extrusion lines, and plastic recycling applications.

Specifications
Model

SJ65/33 SJ70/33 SJ90/33 SJ120/33

Inquiry

Application Specifications Advantage Production Process FAQ

APPLICATION

SPECIFICATION OF SINGLE SCREW EXTRUDER

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Model	Capacity	Main Motor Power
SJ65/33	70-150 KG/H	37 KW
SJ70/33	80-180 KG/H	45 KW
SJ65/33 High Speed	150-300 KG/H	75 KW
SJ90/33	320-450 KG/H	90-160 KW
SJ120/33	450-650 KG/H	160-260 KW

EQUIPMENT ADVANTAGE OF EANS SINGLE SCREW EXTRUDER

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1. Stable Plasticizing Performance: The single screw extruder provides consistent material conveying, melting, and plasticizing, helping maintain a stable extrusion process and uniform output during continuous production.
2. Flexible Material Compatibility: EANS single screw extruder can be configured for different thermoplastic materials, including PE, PP, PVC, and other commonly processed plastics according to the product and formulation requirements.
3. Optimized Screw and Barrel Design: The screw and barrel are selected according to the material characteristics and extrusion application, supporting efficient melting, stable pressure, and reliable long-term operation.
4. Precise Output Control: The extrusion speed can be adjusted according to production requirements, making it easier to control output and coordinate the extruder with downstream equipment such as calibration, cooling, haul-off, and cutting systems.
5. Efficient Energy Utilization: The extrusion system is designed to improve heating and material processing efficiency, helping reduce unnecessary energy consumption during continuous production.
6. Easy Operation and Maintenance: The control system provides convenient adjustment of temperature, screw speed, and other key parameters, while the practical machine structure simplifies routine inspection and maintenance.
7. Adaptable to Complete Production Lines: EANS single screw extruders can be integrated with different dies and downstream equipment to build complete extrusion lines for pipes, profiles, sheets, and other plastic products, allowing the configuration to match specific production requirements.

HOW DOES A SINGLE SCREW EXTRUDER WORK?

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1. Feeding: Plastic pellets or recycled materials enter the extruder through the hopper.

2. Melting and Plasticizing: The rotating screw generates shear force while barrel heaters provide controlled temperature to melt the plastic.

3. Mixing and Conveying: The screw transports the molten plastic forward and ensures uniform material flow.

4. Extrusion Forming: The melt passes through the die to form pipes, profiles, sheets, or other products.

5. Cooling and Calibration: The extruded product is cooled and shaped by downstream equipment.

FAQ

What is the difference between a single screw extruder and a twin screw extruder?

A single screw extruder uses one rotating screw to convey, melt, and extrude plastic materials, while a twin screw extruder uses two screws for stronger mixing and compounding. Single screw extrusion is commonly selected for applications requiring straightforward plasticizing and continuous extrusion.

Can one Single Screw Extruder be used for different products?

Yes. The same Single Screw Extruder can be used for different products when the material requirements and processing conditions are compatible. Changing the extrusion die and adjusting the downstream configuration allows manufacturers to switch between suitable product specifications.

What is a single screw extruder?

A single screw extruder consists of a screw, barrel, heating system, drive system, and extrusion die. During operation, plastic pellets enter the barrel, where they are conveyed, melted, and homogenized before being continuously extruded into finished products.

How to choose a single screw extruder?

Choosing the right single screw extruder depends on the material type, final product, required output, and production conditions. A suitable extruder can improve extrusion stability, product quality, and energy efficiency.

Does the screw design need to change for different plastic materials?

In many applications, yes. Different plastics have different melting temperatures, viscosity, and processing characteristics, so the screw structure and compression ratio may need to be selected accordingly to achieve suitable processing performance.

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COMPANY PROFILE

Zhangjiagang EANS Machinery is a professional plastic extrusion machine manufacturer specializing in the design, development, and production of complete extrusion lines and auxiliary equipment. With over 20 years of experience in the plastics processing industry, EANS team provides reliable extrusion solutions for plastic manufacturers worldwide. With advanced extrusion technology, precision manufacturing capabilities, and professional engineering support, EANS delivers complete turnkey solutions from extrusion system design and equipment manufacturing to installation guidance and production support.

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