Plastic Flow's extrusion die design software, polyXtrue, is based upon a unique and proprietary theory that simulates flow of polymers taking into account not only the shear viscosity, but also the elongational viscosity of the polymer. To simulate a multilayer flow during coextrusion, polyXtrue uses a newly developed algorithm, called Mesh Partitioning Technique, which allows coextrusion simulation without changing the finite element mesh as the shape of different polymer layers change during simulation. Thereby, allowing simulation of the flow even in highly complex coextrusion dies.
