Effect of mold temperature on melt front temperature of thermoplastic resin at injection molding

Abstract

Design of tool and process parameters of injection molding is a challenging engineering task that combines different knowledge, skills and experience of the designer. Spread of melt front within the mold cavity during injection molding is one of the parameters that have a decisive role for the accuracy and quality of the finished part. However, calculation of this parameter is very demanding particularly in case of parts with complex geometry, multi-cavity molds and asymmetric layout of different forms in the mold, i.e. when non-uniform filling occurs. FEM simulation of injection molding process and an analysis of temperature field of molten material in dependence on the temperature of the mold provide a good base for the process optimization including elimination of potential defects on the final part.