Article | REF: AM3637 V1

Operation and Use of Micro-Compounders

Author: Bruno VERGNES

Publication date: July 10, 2023

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1. General presentation

After presenting the basic principle of micro-compounders, we'll review the machine ranges currently on the market, and their main applications.

1.1 Basic principle

As mentioned in the introduction, the purpose of a micro-compounder is to work with very small quantities of material. This may be necessary for ingredients that are only a few grams in size (e.g., chemically synthesized) or prohibitively expensive (e.g., pharmaceuticals). It is therefore natural to think about reducing the size of extruders, but below a certain diameter and maintaining the usual length/diameter ratios, processing conditions are insufficient to mix or transform the materials used correctly. The idea is therefore to couple a small twin-screw extruder with a recirculation channel,...

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