A SYSTEM FOR ANALYSING AND CONTROLLING A DIE SWELL AND A FLOW PROFILE IN POLYMER MELT EXTRUSION

摘要

pThe present invention discloses a system for analyzing and simulating the die swell and the flow profile in polymer melt extrusion through a die, said system typically comprising a mesh generator adapted to generate a computational mesh; a pre-processor adapted to obtain die parameters, boundary conditions, 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 the motion of the computational mesh and polymer melt to converge the die swell; a post-processor means adapted to visualize the die swell and flow profiles for the polymer me and a database means adapted to store the die swell corresponding to the die, mesh and polymer melt parameters./p[US2009210189A1]