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Extruder Screw and Barrel Technology

The basic working principle of the extruder screw and barrel is to melt and compact the polymer, push it to the mold at constant pressure, constant temperature and constant speed, and form a parison in the molten state of the product through the mold. However, the structure of the single-screw extruder and the twin-screw extruder are different, the working principle is different, and the control process conditions are also different.

Ⅰ. Structural characteristics of extruder screw and barrel

The single-screw extruder is composed of a transmission system, an extrusion system, a heating and cooling system, a control system, etc. (there are also some auxiliary equipment). The extrusion system is the key part of extrusion molding, which plays an important role in the molding quality and output of extrusion. The extrusion system mainly includes several parts such as feeding device, barrel, extruder screw elements, die and die.

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