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Difference between single screw and double screw extruder

GEP Ecotech is a solid waste recycling solution provider. We provides a wide selection of industrial shredders and crushers to satisfy your material size reduction requirements, which feature stable performance, high production efficiency and easy maintenance. We pay attention to every detail of the machine to help you improve productivity, save energy and maximize economic benefits. In addition to standard industrial shredder and crushers, customized size reduction machines can also be offered according to your material shredding requirements. A variety of screens and rotors are selectable to achieve the best processing performance.

Compared to single screw extruder, double screw extruder has the below features:

1) Material flow is stable, uneasy happen cutoff or billow, the productive process is reliable.
2) Most heat of double screw extruder mainly comes from mechanical transformation during operation, a small amount of heat comes from the heating jacket. The single screw extruder often requires additional equipment preheat quenched materials.
3) Time distribution is a relatively narrow range of material retained in the machine, which is easier to control the temperature of the material, sufficient energy utilization, yield and quality are very stable.
4) Double screw extruder has a screw surface self-cleaning effect so that the transportation of materials is stable, little residual material in the cavity when finish working, and no need stop to cleaning if change the production material.
5) Double screw extruder has large productivity, is appropriate for the processing of materials containing high oil (> 17%) and high humidity of materials (more than 30% moisture content)

Double screw extruder has a complex structure, request high precision machining, therefore, investment for production facilities is much greater if select this type, so whether select it according to the actual situation.

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