A theoretical model is proposed to study how various mechanical factors, such as the peel rate, the thickness, and the viscoelastic properties of the adhesive and photopolymer layers, control the peel force in a peel-apart imaging film. Based on this model, several strategies are proposed to maintain a given level of the peel force while reducing the peel rate. Our analysis shows that the peel force is not a monotonic increasing function of the peel rate. Instead, the maximum peel force occurs at some intermediate peel rate which depends on the ratio Y-infinity/Y-0, where Y-infinity and Y-0 are the long and short time relaxation moduli of the adhesive, respectively. Predictions of this theoretical model are then compared with experimental results. These experiments were performed under different temperatures and with typical peel rates.