Abstract: Taking protective covers as an example, Moldflow software was applied to simulate the injection molding process. Orthogonal experiments were conducted to study the influence of five process parameters on volume shrinkage and warpage: melt temperature, mold surface temperature, injection time, holding pressure time, and holding pressure. By analyzing the signaltonoise ratio and variance of the results, the best level of each factor was obtained, and then the optimal combination of process parameters was acquired.

Key words: protective cover, Moldflow, orthogonal experiment design, injection molding, optimization