Apichai Ritvirool

pp. 157 - 164

Abstract

How to cut out the required pieces from raw materials by minimizing waste is a trim-loss problem. The integer linear programming (ILP) model was developed to solve this problem. In addition, this ILP model could be used for planning an order over some future time period. Time horizon of ordering raw material including weekly, monthly, quarterly, and annually could be planned to reduce the trim loss. The numerical examples using an industrial case study of a produce-handling vehicle production plant were presented to illustrate how the proposed ILP model could be applied to actual systems and the types of
information that was obtained relative to implementation. The results showed that the proposed ILP model can be used as a decision support tool for selecting time horizon of order planning and cutting patterns to decrease material cost and waste from cutting raw material.