Process, Methods and Features of plastic extrusion technology

May 7, 2021

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According to

The pocess of plastic extrusion technology

“The raw materials are put into the barrel from the hopper, When the screw rotation, the material is transported forward to the feed zone by the friction and shearing function of the barrel wall and the screw surface, in this period when transporting forward the loose solid materials are compacted; in compression section, the depth of barrel’s spiral groove shallow and the material are compacted further, at the same time the external heating of the barrel and the screw and barrel inner wall friction and shearing, the material temperature increases and begin to melt in the compression section; The homogenizing section makes melt material was extruded evenly and set the temperature, quantitative, fixed pressure.

“After the extrusion melt are transported into the die head it forms, and the products was stereotyped by molding.

The method of plastic extrusion technology

“By plasticizing way, there are dry extrusion and wet extrusion.

“By pressurizing way, there are continuous extrusion and intermittent extrusion.

The features of plastic extrusion technology

“Continuous production, high efficiency, simple operation, a wide range of applications, such as pipe extrusion, sheet/film extrusion etc.”

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