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Plastic Flow, LLC was established in 2002 as an outgrowth of Professor Mahesh Gupta's polymer processing research since 1987. Since its inception, Plastic Flow has marketed polyXtrue, optiXtrue, PELDOM and eXtruemat software packages and provided extrusion die design services to the plastic industry. The dedication and innovative skills of Professor Gupta and his graduate students has resulted in many of the world's first polymer processing simulations. Brochure Download


: Simulation of extrudate cooling, shrinkage, and distortion in the complete post-die extrudate haul-off system, including calibrators/sizers.

: Released polyXtrue as an Add-in to Autodesk Inventor to fully integrate the two programs.

: Developed the capability to predict extrudate cooling and shrinkage.

: Released the optiXtrue software for automatic optimization of extrusion dies.

: Included the analysis of heat transfer in die plates and polymer slip on die walls.

: Released polyXtrue as an Add-in to SolidWorks to fully integrate the two programs.

: Developed the capability for using Graphics Processing Units (GPUs) for flow simulation.

: Coextrusion simulation using the level set method for special cases.

: Released pay-per-execution (PPX) version of the polyXtrue software for free and then pay a small fee for each simulation.

: Simulation of post-die extrudate distortion for coextrusion of complex
2008: Non-isothermal simulation of flow in twin-screw extruder using mesh
         partitioning technique.
2007: Coextrusion simulation using mesh partitioning technique.
2006: Simulation of polymer melting in single-screw extruders.
2005: Fully coupled simulation of flow and core deflection in ceramic injection
2004: Automatic optimization of flat extrusion dies for balanced flow at die exit.
2003: Fully animated simulation of the flow in a twin-screw extruder including the
         effect of elongational viscosity.
2003: Analysis of the effect of elongational viscosity on temperature, pressure and
         velocity distributions in a flat die.
2000: Introduced Sarkar-Gupta elongational viscosity model.
1999: Analysis of the effect of elongational viscosity on vortex formation and pressure
         distribution in axisymmetric, planar and three-dimensional entrance flows.
1997: Computer simulation of sink-mark formation in injection-molded plastic parts.
1992: Three-dimensional simulation of the fiber orientation and corresponding
         mechanical properties of short-fiber-reinforced injection-molded plastic parts.
1990: Three-dimensional simulation of polymeric flow in extrusion dies using
         multivariant finite elements.

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