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Single Screw Extruder

Plastic Sheet Extruder, Plastic Profile Extruding Machine, Extrusion Machinery for Doors and Windows, Film Extruder, PVC Ceiling Panel Making Machine

Different Kinds of Single-Screw Plastic Extruders

Z-SJ Series Single Screw Extruder
Z-SJ series single screw extrusion machine is applicable in processing pipes, plates, sheets, rods, profiles and plastic pellets made from PP, PE, PS, ABS, PMMA, PVC and other thermoplastic materials. The aspect ratio and compression ratio of screw, and the structure of machine barrel varies according to different materials and product specifications to meet diversified processing requirements. To meet the highest processing standards, operators can choose the barrels, screws, and driving system that best suit their applications.

Adopting frequency control and speed reducer, the extrusion machinery features low noise, stable running, large bearing capacity and long service life. Upon clients' request, computer control or conventional control system is available.

Technical Parameters
Model Z-SJ45 Z-SJ65 Z-SJ75 Z-SJ90 Z-SJ120 Z-SJ150
Aspect ratio (L/D) 25-33/1 25-33/1 25-33/1 25-33/1 25-33/1 25-33/1
Extrusion capacity (kg/h) 50-150 60-250 200-350 180-550 320-800 400-1200
Screw Speed (r/min) 20-150 20-150 20-150 20-110 20-90 20-75
Motor power (kw) 7.5-22 22-90 55-110 37-185 75-280 90-355
Central height (mm) 1000 1000 1000 1000-1100 1000-1250 1000-1300

HDPE High-Speed Single Screw Extruder
High speed high-efficiency single-screw extruder is designed for different materials and product specifications. Aspect ratio and compression ratio of the screw, as well as structures for the machine barrel can be different to meet different processing requirements. Users can choose the appropriate barrel, screw and driving system basing on their needs.

When the HDPE single screw extruding machine works, plasticizing and mixing processes are conducted uniformly so materials are not easy to get broken. This extruder appears high output and stable performance. It is especially suitable for extruding PE plastic pellets. Besides, we have equipped it with a cooling device on the barrel, and an auto temperature control system. DC motor and variable frequency control is employed for the main motor. The HDPE plastic extruder features simple structure and convenient maintenance. The detailed settings can be adjusted upon clients' demands.

Technical Parameters
Model ZQSJ65 ZQSJ75 ZQSJ90 ZQSJ120 ZQSJ150
Aspect ratio(L/D ) 33/1 33/1 33/1 33/1 33/1
Production capacity (kg/h) 60-250 200-350 180-500 320-800 400-1100
Screw speed (r/min) 20-150 20-150 20-120 20-90 20-75
Motor power (kw) 75kw 110kw 160kw 250kw 315kw
Central height (mm) 1000 1000 1000-1100 1100-1250 1100-1300

Vented Single-Screw Plastic Extruder
Vented single-screw plastic extruder is mainly used for processing polymer materials with high moisture absorption, such as rigid polyvinyl chloride, ABS, nylon, polyoxymethylene and polymethyl methacrylate. With good exhaust effect, the foam of the extruded materials is largely reduced, so the quality of finished products is greatly improved. We have developed vented extruder both for plastic pelletizing and profile processing.

Graphite Extruder
This kind of extruder is mainly used for extruding conductive materials that applied in high-speed rail and subway.

Main Parts of Single-Screw Extruder

1. Temperature Control System
The temperature controller introduced from well-known brand can keep the temperature deviation at ±1℃.

2. Gear Box
The hardened gears are distinguished for low noise, stable running, large bearing capacity, and long service life. High-torque gearbox is optional.

3. Screws
For screws of the extruder, a new screw structure is employed to ensure a uniform melting and mixing result, as well as a high output under low melting temperature. For the materials of screw, we have employed 38CrMoAIA nitriding treatment to achieve a high screw surface hardness. Air or water cooling is available for the cast Aluminum /copper heater.

According to different raw materials and product specifications, the aspect ratio and compression ratio of screws is different. Screw barrels are available in various structures. It supports high precision, good plasticizing effect, and large output, and can basically meet clients of different groups.

4. Electrical Control System
The single-screw plastic extruder is equipped with advanced electrical control and AC/DC stepless speed regulation system. All of the circuit layout and arrangement is conducted in accordance with CE- MD: 2006/42EC+LVD: 2006/95/EC standards. Zeqi has established long-term partnerships with many well-known electrical component suppliers, like Siemens, ABB, Omron, Schneider, Chint, West Germany, Senlan, and so on, to ensure the life and security of our plastic extrusion machines.

Applications of Single-Screw Extruder
1. Our plastic extruders are widely used for extruding plastic pipes, plastic profiles, plastic sheets, plastic bars, and plastic pellets from thermoplastic materials like PP, PE, PS, ABS, PMMA, and PVC, etc.
2. Plastic pipe extruding: PP-R pipe, PE gas pipe, PEX cross-linked pipe, aluminum-plastic composite pipe, ABS pipe, PVC pipe, HDPE silicon core pipe and a variety of co-extruded composite pipes
3. Plastic sheet and plate extruding: PVC, PET, PS, PP, and PC materials, etc.
4. Plastic profile extruding: users can utilize the extruder to produce PVC and Polyolefins plastic profiles by adjusting the speed of the extruder or structure of the screw
5. Plastic modification and pelletizing: applicable in mixing, modifying, and pelletizing of various plastic

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