![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
Polymer processing industry can certainly benefit from recent improvements achieved in rheological modelling, numerical solvers and computer performances. This is also true in particular for profile extrusion, where the design of die lips is an important step. In the present paper, the authors show three-dimensional simulation results for the extrusion process of an industrial profile. Polymer melts are endowed with viscoelastic properties, and a multimode pom–pom model is used for describing the rheology of the selected melt. The calculation includes the prediction of the extrudate shape as well as that of the die lips. From the industrial point of view, this is the first technical paper where the algorithm and detailed simulation results are presented for the three-dimensional inverse extrusion flow of a multimode pom–pom model.