Working principle of single screw extruder

Time:2022-05-23

Working principle of single screw extruder

single screw extruderThe working principle is mainly used for the extrusion of soft, hard PVC, polyethylene and other materials. Can process all kinds of plastic products, such as blown film, extrusion tube, pressure plate, drawing belt, etc. Can also be used for melt pelletizing single screw extruder principle. Let's take a look at the working principle of single screw extruder.

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The beginning of a thread after the mouth is called the conveying section. The material here should not be plasticized, but preheated and pressure compacted. The old theory of extrusion used to think that the material here was loose. Later, it was proved that the substance here is actually a solid plug, that is to say, the substance here is a solid like a plug after being squeezed, so as long as it completes the transportation task, it is its function.

single screw extruderDesign principle: when the second section is called compression section, the volume of the screw groove gradually decreases from large to small, and as the temperature reaches to increase the plasticizing degree of the material, the compression can be affected here. from conveying section 3 to 1, this is called the compression ratio of the screw -3:1. some countries also have some changes in machine learning, and the management of the plasticized material enters the third section.

single screw extruderMatching temperature controller

Single screw extruder principle: the third section is the metering section, in which the material to maintain the plasticizing temperature, as accurate as the metering pump, quantitative delivery of melt materials, feeder head, at this time the temperature can not be lower than the plasticizing temperature, generally slightly higher.

SJ series single screw extruder is mainly used for extrusion of soft and hard PVC, polyethylene and other thermoplastics. It can be used to process various plastic products, such as films, tubes, plates, belts, etc., With the corresponding auxiliary machine (including molding head), can also be used for granulation.

single screw extruderAdvanced design technology, high quality, good plasticization, low energy consumption, the use of standard involute gear transmission, with a certain low noise, smooth operation, large bearing capacity, long life and so on.

The main purpose of the single screw extruder working principle machine

Pipe extrusion: suitable for PP-R pipes, PE gas pipes, PEX cross-linked pipes, aluminum-plastic composite pipes, ABS pipes, PVC pipes, HDPE silicon core pipes and various co-extruded composite pipes.

Sheet and sheet extrusion: suitable for pvc,pet,ps,pp,pc profile and sheet extrusion. Extrusion of various other plastics such as silk, rods, etc.

Profile extrusion: adjust the speed of the extruder, change the structure of the extrusion screw, can be applied to the production of PVC, polyolefin and other plastic profiles.

Modified granulation: suitable for blending, modification and enhanced granulation of various plastics.

High quality, good plasticization, low energy consumption, the use of standard involute curve gear transmission, with a certain low noise, smooth operation, large bearing capacity, long life and so on.

The above introduction issingle screw extruderThe working principle. If you need to know more, you can contact us at any time! Our company has many years of experience and looks forward to your joining at any time.

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