A Model of Polymer Melt Flow in Spiral Mandrel DiesEquistar Chemicals, LP, 11530 Northlake Drive, Cincinnati, OH 45249 This work describes a model of polymer melt flow in spiral mandrel dies that attempts to account for the viscoelastic behavior of the polymer melt. The model is of the control-volume type currently available in the literature and includes simple, yet essential, modifications that improve the model predictions. The improved accuracy is demonstrated by comparison to three-dimensional calculations for Newtonian fluids and experimental results on LDPE blown films.
Key Words: blown film spiral mandrel dies flow modeling viscoelasticity
Journal of Reinforced Plastics and Composites, Vol. 18, No. 10,
906-913 (1999) |
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