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Centre Twin-screw extruder for PVC product production

Twin-screw extruders gradually evolved and developed from single-screw extruders. It has very good mixing and plasticizing properties and can be used in the molding and processing of various plastic products.

Different from the single-screw extruder, the dual-pass dry extruder consists of two parallel twin-screws placed in the screw barrel and closely fitted together.

With the development trend of twin-screws in the market (the development trend of high torque, high speed, low energy consumption and production efficiency), Center's technical staff have continuously tested and finally determined the unique screw combination sequence, making the overall screw presentation perfect. state. It is faster and consumes less mechanical energy. The speed of more than 500 rpm makes the work efficiency about twice that of a single-screw extruder. At the same time, our twin-screw extrusion equipment is used in processing high-viscosity, heat-sensitive and other raw materials. It has unique technical advantages.

    Center's self-developed twin-screw basic equipment is also very convenient for subsequent maintenance. Internal problems can be discovered at any time for effective repair and replacement. Assembling the screw also greatly reduces the maintenance cost and time of replacing parts and avoids unnecessary waste.


    • Suitable for processing and manufacturing products of various materials such as PVC, wood-plastic profiles, various pipes, thermosetting plastics, heat-sensitive materials, etc.
    • Excellent melt uniformity and low melt temperature.
    • Low energy consumption AC motor.
    • Screw diameter, high performance, extremely space-saving.


    Twin screw specifications: SJ51/105, SJ65/132, SJ80/156, SJ90/188
    Co-directional meshing, counter-meshing and non-meshing types in twin-screw extruders.

    Nissan maintenance

    1. After 500 hours of use, there will be iron filings or other impurities in the reduction gearbox. Therefore, the gears should be cleaned and the reduction gearbox lubricating oil should be replaced.
    2. After using it for a period of time, conduct a comprehensive inspection of the extruder to check the tightness of all screws.
    3. If there is a sudden power outage during production and the main drive and heating stop, when the power is restored, each section of the barrel must be reheated to the specified temperature and kept warm for a period of time before the extruder can be started.