Prevention of extrusion defects
Extrusion defects
Article REF: AM3657 V1
Prevention of extrusion defects
Extrusion defects

Author : Rudy KOOPMANS

Publication date: October 10, 2002 | Lire en français

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4. Prevention of extrusion defects

Current limitations in understanding extrusion defects have not prevented the search for solutions that inhibit extrudate deformation. The most conventional approaches involve modifying polymer architecture, extrusion conditions (flow rate, die geometry, extrusion temperature) and the addition of (preferably inexpensive) additives.

4.1 Polymer architecture

Modifying polymer architecture involves changing the chemistry and manufacturing conditions of the polymer. This is an exciting task for polymer companies. For a well-defined polymer manufacturing technology, this can be difficult to achieve because many technical and commercial aspects have to be weighed up.

For the chosen polymer chemistry, the architectural options are :...

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