Screw extruder from the beginning of the plunger-type, single screw to the current parallel twin-screw, cone-shaped twin-screw type and other models, this journey has gone nearly hundred years.

In recent years, three screw extruder with its changeable combination, with excellent mixing characteristics, small length-diameter ratio, higher capacity than attention.

What are the advantages of tri-screw extruder compared with the previous types of screw extruder?

Advantages of tri-screw extruder

1. Fully plasticized and evenly dispersed

A three screw with a font arrangement, the rolling area multiplied to increase the dispersion more evenly.

2. High Yield

For the production of carbon black Masterbatch for example, without high stirring, 3-φ60 machine can produce 50% of the concentration of carbon black masterbatch, production is 180 kg/hour, and 2-φ60 (the same type of twin-screw machine) does not rely on high mixing or repetitive processing can only produce 35% concentration of carbon black masterbatch, 80 kg/hour.

3. Energy saving

The output power is only 0.2-0.25kw/kg.

4. High product quality The production of Masterbatch has higher toughness.

Because of its full plasticizing, distributed evenly, and good particle toughness.

5. With molecular grafting function, can be directly used in the production of PP foam beads We all know that PP foam must be high melt strength polypropylene (HMS-PP), with three screw extruder can be directly used to produce a very good EPP beads.

Ordinary PP in the three-screw machine flow in the process has been the molecular grafting, into the high melt strength of polypropylene. 

This can be seen from the extruder of the three screws will be widely used in the nano-composite system, high viscosity material mixing, high filling composite system, and the requirements for dispersed mixing more occasions, and the gear box will be the most key parts. The twin screw gearbox of the BSG are design with high torque, super high torque has a dedicated technology, on this basis, the development team in the customer's expectation, and finally the completion of the three-screw gear box had been design and manufactured with international patent.