Patent ID: 8311787

Claim:
A system for analyzing and controlling the die swell and the flow profile in polymer melt extrusion through a die, said system typically comprising the following: a mesh generator adapted to generate a computational mesh mathematically representing the actual die geometry; a pre-processor adapted to prescribe die parameters, boundary conditions and polymer melt parameters including rheological characterization and constitutive equations and to generate an input file; a simulator adapted to receive the input file from the pre-processor and process the input data to simulate die swell; a mesh corrector means adapted to analyze the die swell obtained from said simulator and to correct motion of the computational mesh and polymer melt to simulate the die swell accurately; a post-processor means adapted to visualize the die swell and flow profiles for the polymer melt; and a database means adapted to store the die swell corresponding to the die, mesh and polymer melt parameters.