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Twin-screw Plastic Extruder: For PVC processing, suitable for plastic factories and product manufacturers

Oapplication & Features
SJSZ series conical twin-screw extrusion machine can extrude various kinds of thermoplastics to be tubes,sheets,boards,films,profiles,etc.when equipped with related screw and auxliary parts. oreover, it can be qualified for the process of modifyingplastics and pelletizing powders.
This machine adopts AC motor,infinite speed variation by frequency converter,overload protection,trouble alarm,constant oiltemperature in the screw,oil cooling in the barrel and the devices of vacuum exhausting as well as fixed quantity feeding.

    Main technical parameters

    SJSZ45

       SJSZ55

    SJSZ65

    SJSZ80

    SJSZ92

    Diameter of screws(mm)

    45/90

       55/110

    65/120、65/132

    80/156

    92/188

    Quantity of screws

    2

    2

    2

    2

    2

    Rotation of screws

          Outward in different drection

    Rotate speed of screws(r/min)

    1-37

       1-40

    1-35.7

    1-36.9

    1-37.5

    Effective length of screwslmml

    1065

       1200

    1440

    1800

    2185

    Main motor(kw)

    22

    22

    37

    55

    110

    Barrel heating power(kw)

    10

    18

    24

    36

    68

    Production capacitylkg/h)

    110

    150

    250

    450

    750

    Centre height of machine(mm)

    1000

    1000

    1000

    1000

    150

    Net weight(kg)

    2500

    3500

    4000

    5000

    7000

    Appearance size(L*W*H)

    3235*1100*2157

    3620*1050*2157

    4235*1520*2450

    4750*1550*2460

    6500*1800*2500

    Working Principle

    The twin-screw extruder operates via two intermeshing or counter-rotating screws, which convey raw materials from the feed inlet into the barrel. During the rotation of the screws, they not only transport the materials but also, through the heating of the barrel and the shearing and kneading effects of the screws, gradually melt and plasticize the raw materials to form a uniform melt. The synergistic effect of the twin screws enhances the material mixing and shearing efficiency, preventing local overheating or uneven plasticization. Subsequently, the melt is continuously pushed to the head mold by the thrust of the screws and extruded into shape according to the cavity form of the mold, meeting the processing needs of different products and adapting to the continuous processing process of various materials.​

    Product Features

    It has strong material mixing and plasticizing capabilities, capable of processing raw materials with complex properties such as high filling and high viscosity, and is suitable for processing in multiple fields including plastics, rubber, and composite materials. It adopts a precise temperature control and screw speed adjustment system to ensure stable product quality and reduce production fluctuations. With a compact structural design, it operates with low noise, and key components are made of wear-resistant materials to extend the service life of the equipment. It has a high degree of automation integration and can be linked with auxiliary equipment such as feeding, cooling, and cutting devices to simplify the production process. Meanwhile, it requires no complex operations, reduces reliance on manual labor, and improves overall production efficiency.

    Quality and Service

    ● Brand cooperation: Siemens PLC, ABB frequency converter, Schneider air switch contactor 
    ● Service commitment:
    Pre-sales: Customized scheme design
    After-sales:
    (1) Production capacity guarantee: Delivery time is divided into 30, 60, 90 and 120 days according to the project scale
    (2) Warranty Policy: 
    1)year free warranty,
    2)one-to-one service, 
    3)7*24-hour response
    (3)Technical support: 
    1)Installation guidance, 
    2)remote diagnosis
    (4) Training service: Operation/maintenance training

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