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Introduction of extrusion movement of extruder

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Introduction of extrusion movement of extruder

Date of release:2018-10-16 Author: Click:

We all know that the extruder is one of the types of plastic machinery, which enables the material to be fully plasticized and uniformly mixed and formed by die molding. There are plastic extruders, hot melt glue stick extruders, etc.

Plastic extrusion is the process of continuously making a variety of semi-finished products of different shapes through the action of the plastic between the barrel wall of the plastic extruder and the rubber screw. The extrusion process, also known as the extrusion process, is widely used in the manufacture of treads, inner tubes, hoses, and various semi-finished products with complex cross-section shapes or hollow, solid. It can also be used for filtration, granulation of plastics, plasticization of raw rubber, and linkage of upper and lower processes, such as replenishing and kneading under the internal mixer, and supplying rubber to the calender after hot refining.

After the plastic enters the plastic extruder to form a viscous fluid, the axial force generated by the rotation of the screw further pushes the plastic forward, and the plastic is further homogenized, just like the ordinary nut moves in the axial direction. However, unlike nut movement, plastic is a kind of viscoelastic material. During the process of moving along the screw, its viscosity changes due to mechanical and thermal effects, and gradually changes from viscoelastic to viscous fluid. Therefore, the movement of the plastic in the plastic extruder is like the flow of the fluid, that is to say, the movement of the plastic in the plastic extruder has both the characteristics of the solid movement in the axial direction and the fluid flow.


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Key word:热熔胶棒挤出机,IC管挤出机,ps仿木生产线

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