The numerical study of the coextrusion process of polymer melts in the cable head

Abstract

The process of coextrusion consists in a simultaneous creation of all necessary insulating layers of different polymers in the channel of a special forming tool. The main focus of this study is the analysis of technological, geometrical and rheological characteristics on the values of the layer’s thickness. In this paper are considered three geometries of cable head on the three–dimensional and two–dimensional representation. The mathematical models of separate and joint flow of polymer melts have been implemented by the finite element method in Ansys software package. The velocity fields, temperature, pressure in the cross–sections of the channel and by the length have been obtained. The influence of some thickness characteristics of insulation layers has been identified.