Abstract
In a flow line system designed by the mixed lot of operation times to each of the different parts, interference time exists because of the variations of the operation times. In this paper, we consider a theoretical solution of this interference time and its elimination. We suggest the delay of production time that seems to arise in actual application of this elmination, and the actual advantageous application of this system by applying the theoretical formula for little more delay than seems to arise when the interference time is not eliminated.