Influence of pressure oscillation on injection molding process

A self-made vibration-assisted injection molding machine (VAIM) was developed to generate oscillation injection pressure during filling and packing The cavity pressure changes sinusoidal with time during filling and packing in VAIM. The filling time can be shortened with the introduction of oscillation injection pressure. The melt peak of the parts become wider and the melt point move to high temperature with the increase in piston rod vibration amplitude/frequency.