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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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Prevention of extrusion defects
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References
Tools
Akro-co Twin Screw Temarex (USA) http://www.temarex.com/extrus.htm
Extrud7-2000 Scientific Process & Research (USA) http://www.spar.com
Ludovic SCC (France) http://www.scconsultants.com
...Events
ANTEC (SPE Annual Technical Conference) http://www.4spe.org
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Single-screw extruders
AKMA (Germany) http://www.akma-kg.de
AMUT (Italy) http://www.amut.it
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