Minimize the Solid Waste by Reducing the Rubber Compound Consumption in the Outsole Manufacturing Company

Wulung, R.B. Seno and Rifai, M. Zainuddin Minimize the Solid Waste by Reducing the Rubber Compound Consumption in the Outsole Manufacturing Company. Applied Mechanics and Materials. ISSN 1662-7482, Vol. 898, pp 39-44

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Abstract

Rubber compound supplies are very important in supporting the outsole production process, in order to obtain good results and increase production efficiency. However, the rubber outsole company at west java used excessive rubber material for producing outsole. Furthermore, the situation is identified as the company has an inefficient distribution system of the rubber compound. Therefore, there is an abundant solid waste of rubber compound in the outsole pressing process. This research aims to reduce the waste of rubber compounds by regulating the rubber compound distribution using Material Requirement Planning (MRP) with a fixed order quantity lotsizing technique. The using of MRP will lead to the consumption of the rubber compound can be controlled properly. Moreover, by reducing the utilization of rubber material, the company can minimize solid waste. The result shows that the company can reduce 38.75 kg/day rubber material for production line 1, while 3.69 kg/day for production line 2. Therefore, in one year the company can cut the consumption of the rubber material about 23.57 tons. By reducing the utilization of rubber material, the result indicates that the method can reduce the loss of production worth Rp. 5,240,000/day. Furthermore, this paper also recommends incorporating demand uncertainty of the outsole product in future research.

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