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Extruder molding equipment extrusion principle and equipment composition introduction

May 25, 2019

Extrusion molding equipment extrusion principle and equipment composition introduction:

Add powder or granules and butyl ester, old material and calcium powder to the hopper of the extruder, and stir continuously with a high-speed mixing tank. The homogeneous plastic raw material is stirred and extruded from a porous head or metal mesh using a high extrusion pressure of the extruder.

Usually after the material is placed in the hopper, the material is extruded with a screw. After using the inverter speed control technology, the pressure can be controlled so that the most suitable linear speed can be selected.

Extrusion is a continuous molding of a polymer melt (or viscous fluid) through a die of a certain shape under the action of an extruder screw, and the resulting article is a continuous profile having a constant cross-sectional shape. ,

There are two types of extrusion molding equipment: a screw extruder and a plunger extruder. The former is continuous extrusion and the latter is batch extrusion. Screw extruders can be divided into single-screw extruders, twin-screw extruders, vented extruders and multi-screw extruders. Among them, single-screw extruders are the most used in production. The most basic extruder. Twin-screw extruders have developed rapidly in recent years and their applications have become more widespread. At present, in the processing of PVC plastic door and window profiles, single-screw extruders have been gradually eliminated, twin-screw extruders have become the main production equipment, but single-screw extruders still dominate in the extrusion processing of other polymers. status. Plunger extruder is mainly used for the molding of high viscosity materials, such as polytetrafluoroethylene, ultra high molecular weight polyethylene.  www.chamferingmachinechina.com