Analysis of influences of processing parameters on filling behavior in microinjection molding with a hot runner nozzle
The ability for polymer melt to flow into the microstructure is a crucial factor for successful molding in the microinjection molding of plastic parts.In this study,a simplified analytical model with a direct hot runner nozzle and was constructed to estimate the filling percentage of molds cavity.The filling behavior of polymer melt was observed by 3D simulation software Moldflow.The effects of the mold temperature,melt temperature,injection pressure,injection rate,and packing pressure on the filling behavior of polymer melt were investigated.Results revealed that the filling percentage increased with respect to the increase of mold temperature and melt temperature which didnt exceed its degradation temperature.The injection pressure and packing pressure dramatically influence the filling percentage,and it made no sense to lift the injection speed to fill the cavity when the injection speed reached the relatively high values,and only processing parameter combined available could guarantee the perfect flow and filling for the microstructure.
fill microinjection molding processing parameters hot runner nozzle
Gang Gou Pengcheng Xie Weimin Yang Yumei Ding
College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China
国际会议
the Asian Workshop on Polymer Processing 2011(2011高分子加工技术亚洲研讨会(AWPP2011))
青岛
英文
117-121
2011-11-04（万方平台首次上网日期，不代表论文的发表时间）