Dual screw extruder has good feeding characteristics, suitable for processing powder materials, and has better mixing, exhaust, reaction and self-cleaning functions than single screw extruders. Its advantages are best demonstrated when processing plastics and blends with poor thermal stability.
In recent years, dual screw extruders abroad have made great progress. Various forms of dual screw extruders have been serialized and commercialized, and there are many manufacturers producing them. Dual screw plastic extruders will develop towards multi-functionality, large-scale, precision, intelligent, and networked. Let's take a closer look at these three directions and see how they manifest.
A twin screw extruder manufacturer's primary focus is to provide clients with dual screw extruders that guarantee high output, low energy consumption, and low manufacturing costs. In terms of functionality, screw extruders are no longer limited to extruding and blending processing of polymer materials. Their uses have expanded to the fields of food, feed, electrodes, explosives, building materials, packaging, pulp, ceramics, and more. In addition, the "one-step extrusion process" which combines blending and granulation with extrusion molding process, should also be given due attention.
The large-scale implementation of extrusion molding equipment can reduce production costs. This advantage is more pronounced in large-scale dual screw extruder units, blown film units, pipe extruder units, and other equipment. The large-scale extrusion granulation machine is one of the three key equipment in the large-scale ethylene project. It has relied on imports for a long time, so it must be localized to meet the needs of the petrochemical industry. Precision is essential to increasing product value, as seen in the case of multi-layer co-extruded composite films that require precise extrusion. It is crucial to intensify research and development of the melt gear pump, an essential means to achieve precision extrusion, especially with extruder for sale on the rise.
In developed countries, modern electronic and computer control technology is widely used in dual screw extruders. The process parameters of the entire extrusion process, such as melt pressure and temperature, temperature of each section of the machine, main screw and feed screw speed, feed rate and proportion of various raw materials, and motor current and voltage, are monitored online and controlled by a microcomputer in real-time. Some companies have adopted remote monitoring, diagnosis, and control over the internet, network-controlling the entire extrusion production line. This is extremely beneficial for ensuring stable process conditions and improving product accuracy.
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