MATHEMATICAL MODELLING OF MELTING OF THERMOPLASTICS IN A SINGLE SCREW PLASTICATING UNIT

Abstract

A new complex mathematical model has been developed for the melting zone of a single screw plasticating unit. It has been discussed the different melting mechanisms, the presented model is used to describe the different melting processes. The present analysis leads to significantly improved predictions of the length of melting zone, and the solid bed, pressure and temperature profile. It can give the location of the break up phenomenon. This conclusion is supported by experimental data.