6.1.1. Single product manufacture in Pull system
6.1.1.1. Fill rate. Fig. 6 shows that the average fill rate
decreases as the kanban size increases. This is because the processing time for a batch of large
kanban size is longer despite the insignificant machine set-up time. Obviously, there is a longer
time for a large batch size, and a shorter time for a small batch size. Therefore, at the end of
each data collection period (every 10,000 min), the probability for a batch of larger kanban size
to be completed is lower. This is the main reason why the fill rate is lower with an increase of
kanban size.