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Pressure buildup in the feed zone of a single screw extruder—the effect of density compressibility

✍ Scribed by Tzu-Hsiung Sun

Publisher
John Wiley and Sons
Year
1988
Tongue
English
Weight
239 KB
Volume
8
Category
Article
ISSN
0730-6679

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✦ Synopsis

The effect of density compressibility of granular polymeric solids on the pressure development inside the feed zone of a single screw extruder was calculated. Results indicate that, for a given flow rate, density compressibility enhances pressure rise inside the extruder, remedying the under estimation of previous theory. A substantial rise in pressure buildup may result for compressibility above a certain level. This may explain observed surging during the processing of low bulk density materials.

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