Viscous and Elastic Effects in Polymer Coextrusion, 2002 PLACE Conference Proceedings

Multilayer coextrusion is a process in which two or more polymers are extruded and joined together in a feedblock or die to form a single structure with multiple layers. These layers should be uniform in thickness across the structure for best performance. However, layer thickness non-uniformities have been observed in many coextruded products. Previous work has shown these layer thickness variations can occur due to viscosity differences between the polymers in the layers and/or elastic effects that introduce secondary flows. The objective of this work was to examine the effect of viscous and elastic forces present in polyethylene coextrusion processes.

Author: Joseph Dooley, Luciana Rudolph
Viscous and Elastic Effects in Polymer Coextrusion, 2002 PLA
Viscous and Elastic Effects in Polymer Coextrusion, 2002 PLACE Conference Proceedings
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