Plastic Flow LLC has released a new software package to simulate polymer extrusion, called polyXtrue.
The software is useful for extrusion die designers, with a module for design of coextrusion and monoextrusion.
President Mahesh Gupta said the complex geometry of the coextrusion feed block has slowed the coextrusion market. But polyXtrue is based on a full, three-dimensional simulation of the polymer flow, made possible by a newly developed computer technology called mesh partitioning. This simulates coextrusion without changing the finite element mesh as the shapes of different polymers change during the simulation.
Another reason for the high level of accuracy is the variational principle to enforce a condition of no cross-flows on the interface surface between adjacent polymer layers, Gupta said.
Gupta is a mechanical engineering professor at Michigan Technological University in Houghton, Mich.
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