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screw extruder machine
Conical Twin Screw Extruder

What is a conical twin screw extruder? What are the advantages over traditional extruders?

July 14 , 2022

The conical twin screw extruder has the characteristics of uniform plasticization and mixing, high output, stable quality, wide adaptability, long service life, and direct molding of PVC powder. With the corresponding forming head mold and auxiliary machine, various thermoplastics, especially hard polyvinyl chloride powder, can be directly extruded into plastic products such as tubes, plates, sheets, rods, films and profiles. Modification of various plastics and powder granulation process.

At present, the extruders on the market mainly include single-screw extruders, conical counter-rotating twin-screw extruders and parallel twin-screw extruders. The advantage of ordinary single-screw extruder is low cost, but there are certain deficiencies in extrusion force, plasticizing performance and energy consumption compared with conical twin-screw; The advantage of the conical counter-rotating twin-screw extruder is that the extrusion force is large, but the plasticizing performance is poor, the output is low, and the energy consumption is large; while the parallel co-rotating twin-screw granulator has good plasticizing performance, but it is relatively conical double extrusion. Output is small. We know that poor plasticizing performance will directly affect the quality of plasticized products, and the extrusion force will affect the output. At the same time, in the period of increasing energy shortage, high-energy-consuming equipment has also increased a lot of pressure on enterprises and society. . To this end, designing a granulator that can meet the requirements of large extrusion force, good plasticizing performance, high output and low consumption at the same time has very important economic value and promotion and application value. In order to overcome the above shortcomings, the conical co-rotating twin-screw extruder not only has good plasticizing performance, but also has good extrusion force.

Conical co-rotating twin-screw extruder, the conical screw rotates in the same direction, after entering the barrel, the plastic to be processed is extruded in a figure-8 shape around the conical twin-screw in the barrel, which increases the plasticizing time and reduces the The friction between the plastic and the barrel screw ensures the plasticizing quality and reduces the energy consumption; Because the screw used is conical, the good extrusion force performance of the conical twin-screw granulator is maintained. Through the above technology, the conical co-rotating twin-screw extruder fully realizes the characteristics of large extrusion force, good plasticizing performance, high output and low energy consumption. It is a novel equipment suitable for extrusion and granulation of various plastics or rubber. . From the perspective of development, it has become an inevitable trend for the conical twin-screw extruder to replace the traditional plastic extruder and become the main thermoforming machine in the plastics processing industry in the next few years.

The company is a professional manufacturer of plastic machinery and equipment in China. The main products are: single-screw and twin-screw extruders for various purposes; various types of plastic pipe production lines; various types of plastic profile production lines; various types of plastic sheet and sheet production lines Wait. The company's main product, conical twin-screw extruder, has stable performance and can make the melt plasticized and extruded at a lower temperature. The barrel is equipped with a heater, which has high thermal efficiency, fast and uniform temperature rise, and is equipped with a cooling fan. The specially designed transmission part is driven by a new type of frequency conversion motor or a direct-drive current motor, which has stable operation, large transmission torque and high efficiency. Through high-quality frequency converter or DC governor, it can achieve stepless and stable speed regulation, high precision and energy saving. The intelligent instrument is adopted, which is easy to use and operate, with high control precision and small temperature fluctuation. With overload protection and fault alarm, screw core oil circulation constant temperature, barrel oil cooling and other functions. Its features of good performance, high output and long service life are exported to various countries and regions at home and abroad!

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