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Plastic Flow's polyXtrue software has been successfully used to simulate multilayer flow of different polymers in complex coextrusion dies. The software quickly assists design engineers to determine the layer structure at the exit of a coextrusion die. The software now makes it possible to eliminate much of the costly tool-and-die shop trial-and-error currently required for design of coextrusion dies, significantly reducing the development time for feed-block coextrusion systems. In feed-block coextrusion systems, polymer layers get redistributed as they flow through the feed-block. Because of this redistribution of polymer layers, design of the feed-block system geometry is difficult.

The polyXtrue software is based upon a full three-dimensional simulation of the flow in coextrusion dies. Such a simulation of the flow in complex coextrusion systems is made possible by the newly developed Mesh Partitioning Technique, which is being employed in the polyXtrue software. This innovative technique allows coextrusion simulation without changing the finite element mesh as the shape of different polymer layers change during the simulation. Another reason for the high accuracy of the coextrusion die module of the polyXtrue software is the variational principle being used to globally enforce the no-cross-flow condition on the interface surface between adjacent polymer layers.


Two different options are available for optimization of coextrusion dies using polyXtrue.


1.  Purchase a license of coextrusion die module of    polyXtrue, and optimize your die design yourself. Plastic    Flow will train you in the complete process of starting     from die concept to achieving the final optimized die geometry.

2.  Send your die design requirements, including extrusion profile, material properties, and processing conditions to Plastic Flow. Our experts will develop and optimize the die geometry for your extruded plastic products.

Technical Papers using this module of polyXtrue.

The polyXtrue software has been successfully used to design new coextrusion dies as well as to optimize existing dies.