INVESTIGATION OF THE EFFECT OF INJECTION PRESSURE ON CAVITY FILLING OF HOT RUNNER SYSTEM

Abstract

This research aims to examine the impact of injection pressure on the process of cavity filling in a hot runner injection molding system, under varying temperature conditions. The research utilizes a combination of analytical and experimental approaches to simulate and evaluate the performance of the hot runner system across various injection pressures and temperatures. The aim of this study is to investigate the impact of injection pressure on the process of cavity filling and to determine the most suitable range of injection pressure that can ensure complete cavity filling and optimal quality of the product. The results of the numerical investigation indicate that injection pressure is a critical parameter that affects the cavity filling process in hot runner injection molding systems. The experiments conducted at different temperatures show that injection pressure has a significant effect on cavity filling, with increasing injection pressure leading to better cavity filling. The optimal injection pressure range for complete cavity filling varies depending on the melting temperature. Incomplete filling occurs at lower injection pressures due to the increased material viscosity caused by the lower melting temperature. The findings of this study can be useful to manufacturers seeking to optimize their hot runner injection molding process for enhanced product quality. Future work includes investigating the effectiveness of Rheodrop technology in cavity filling under low injection pressure.