Technologic Analysis of Monochrome Toothbrush Injection Molding Process Based on Moldflow Software

The paper analyzed monochrome toothbrushes produced by injection molding by Moldflow and obtained the ram position injection speed settings associated with the actual injection molding process as well as determined three important screw setting positions—the initial ram position、the first part of ram position and the V/P switch location.The packing parameters were optimized so that the volumetric shrinkage became more uniform,thus provided a reference for setting technologic parameters of the injection molding of monochrome toothbrush.[Ch,3 fig.2 tab.7 ref.]