Abstract: An aspheric plastic optical lens is studied by simulation experiment technology and Taguchi experimental method. Through the analysis of S/N ratio and ANOVA methods, the effect of various process parameters on the volumetric shrinkage was investigated. The results showed that the process parameters of effect significance on shrinkage were packing pressure, gate size, and packing time. It also revealed that the interaction between packing pressure and gate size was an important factors to affect the volumetric shrinkage of aspheric lens. Based on the analysis results, the optimized process parameters combination was obtained to reduce the part shrinkage.

Key words: packing process, gate size, shrinkage, taguchi method