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What are the specific difference of plastic extruder single and double screw?

Update Time :2013-05-29The view :1621

Single screw machine and double screw machine: one is a screw, a screw。 Two are used in a motor driven screw。 Power due to different power double different。50 cone is about 65 20KW, about 37KW。 yield is related to material and screw, quantity 50 the cone is about 100-150KG/H, yield is about 200-280KG/H。 single screw 65 is only half cone。

狗万滚球app According to the number of screw extruder can be divided into single screw, twin screw and screw extruder。 At present, the single screw extruder is most widely used, suitable for extrusion processing of general material。 Twin screw extruder as the transmission capacity of shear has less heat, generated by the friction material are relatively uniform, screw extrusion amount larger, more stable, the material stay long in the barrel, uniform mixing。

SJSZ series conical twin screw extruder with forced extrusion, high quality, wide adaptability, long service life, small shear rate, the material is not easy decomposition, Plasticating good performance, direct powder molding characteristics, temperature control, vacuum exhaust device. Suitable for pipe, plate, special-shaped materials products production.

Whether as a plasticizing granulation machinery and moulding machinery occupies an important position in both single screw extruder, in recent years, single screw extruder has the very big development. With a single screw extruder granulation at large German production, screw diameter up to 700mm, the yield was 36t/h.

The main sign of single screw extrusion machine development lies in the development of its key parts -- screw. In recent years, there has been a lot of theoretical and experimental studies on the screw, it has been nearly a hundred kinds of screw, common are separated type, shear type, barrier type, shunt and the wavy type etc..

From the point of view of development in recent years despite the single screw, single screw extruder has been perfect, but with the polymer materials and plastic products development, there will emerge new screw more features and special single screw extruder. In general, a single screw extruder to high speed, high efficiency, the direction of specialization development.

Twin screw extruder feeding characteristics, suitable for powder processing, and the ratio of single screw extruder mixing, exhaust, reaction and self-cleaning function has better machine, machining features is poor thermal stability of plastic and blend more show its superiority. In recent years foreign twin-screw extruder has been a great development, twin screw extruder has series of various forms and commercialization, manufacturers are more.


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