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An experimental evaluation of flow distribution models for spiral mandrel dies

โœ Scribed by John Perdikoulias; Jiri Vlcek; John Vlachopoulos

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
830 KB
Volume
10
Category
Article
ISSN
0730-6679

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โœฆ Synopsis

Three recent mathematical models, developed to simulute the flow of polymer melts through spiral mandrel dies were analyzed. The models were compared against each other and with experimental data. The experimental data were obtained from processing several polymers through a 100 mm diameter spiral mandrel die attached to a 38 mm extruder. The die hgd no post-spiral sections to ensure that only the effect of the spiral distribution system would be measured. The model developed by Vlcek et al. (Int. Polym. Process., 2, 174-181, 1988) was found to be the most accurate in predicting both the magnitude of the flow vaniation and the pressure drop.

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