Abstract:
This paper presents an analysis of the effect of
interactions of major injection molding process parameters on
short shot defects. The factorial design of the experiment and
numerical modeling techniques were used. Parameter mains
effect and interaction effect sizes were computed, and their
significance was tested through ANOVA. It was demonstrated
that injection pressure setting and melt temperature were the
most influential parameters affecting short shot defects with
contributions of 92% and 7% respectively as well as their
interactions. The most significant interactions affecting short
shot defects involved melt temperature. Knowledge of
significant parameter interactions affecting short shot defects
could enhance a targeted approach to defect control. The
approach and the results presented herein can be adopted in
plastic injection molding entities to minimize such defects.
