A production scheduling system for a hybrid flow shop-A case study

This paper presents a production scheduling system for photographic film manufacturing industries. The scheduling system considers a hybrid flow shop, which consists of two manufacturing states: first, the slitting of the film bulk-roll, and second, the interleaving and wrapping of the slitted sheets. In this study, several hundred final productions are produced from the film bulk-roll based on the actual demands for final products. This production scheduling system was designed as a decision support system by combining computer capability with production management. The selected performance cirteria for making a schedule were ratio of setup time to processing time, work-in-process level ratio of attainable production quantity of final products to the planned production quantity. The system designed for this study showed more favourable results than the conventional system.