Abstract
Spiral mandrel dies are widely employed in the processing of polymeric films in the blown extrusion process. The flow dynamics in spiral mandrel dies is modeled in conjunction with a lubrication assumption. The model permits the determination of velocity, rate of deformation, shear stress, and first normal stress difference distributions. It should generate a better understanding of the thermomechanical history experienced by polymeric melts during extrusion in spiral mandrel dies, and should thus facilitate better die design and/or optimization of operating conditions.
| Original language | English |
|---|---|
| Pages (from-to) | 179-207 |
| Number of pages | 29 |
| Journal | Polymer Process Engineering |
| Volume | 5 |
| Issue number | 2 |
| State | Published - 1987 |