Article | REF: AM3654 V1

Reactive extrusion processes

Authors: Françoise BERZIN, Guo-Hua HU

Publication date: July 10, 2004

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1. General presentation

1.1 Definition and presentation

First of all, extrusion is a continuous process in which the heart of the device is an extruder (cf. articles , and ). This comprises one or more worm screws rotating inside a temperature-regulated sheath with heating and cooling systems. The polymer is fed in, often in solid, granulated or powder form.

The main functions of the extruder are to swallow the polymer, convey it, melt it, homogenize it and pressurize it, so that it can finally pass through the die placed at its end.

Extrusion lines are mainly used for :

  • the manufacture of finished or semi-finished products such as tubes, plates and various...

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