Residence time distribution of polymer melts in the linearly tapered coat‐hanger die

  • Matsubara Y
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Abstract

This article analyzes the average residence time distribution of polymer melt across the die width in a common linearly ta- pered coat-hanger die, which excells the T die but is a little in- ferior to the curvilinearly tapered coat-hanger die in residence time uniformity according to the approximated calculation of- ten used. From another point of view, a linearly tapered coat- hanger die may be designed so that a desired ratio of the resi- dence time through the die far end to that along the die center line may be imposed as one of the design constraints.

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Authors

  • Yutaka Matsubara

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