자동차 부품물류에서 포장단위와 주문량의 불일치에 따른비용분석

초록

One of primary factors that make it difficult to optimize inventory and transportation management in the supply chain is discrepancy between unit of packaging and order quantity. Even though increasing standardization of packaging units matching with order quantity makes it advantageous to pursue optimization, it discrepancy is likely to exist because buyers hope to order inconsistently depending on their inventory and demand. Collaborative efforts between buyers and suppliers are essential to sort out this problem, but insufficient recognition on cost incurred from discrepancy between packing unit and order quantity hinders the mutual collaboration. While the literature on this issue is very limited, this study develops numerical analysis model to calculate the cost incurred from mismatch between the order quantity and the packaging unit. The model is based on the case study of a Korean auto-part supplier using order data of 9,645 times for 31 weeks received from auto-manufacturer. It is shown that the empty space due to discrepancy between packing unit and order quantity influence transportation cost, packaging cost and tax base that is used for insurance and duty levy. As the cost of empty space is variably allocated to buyers and suppliers depending on incoterms applied, buyers do not have sufficient motivation to improve efficiency in transportation by reducing the empty space and this misperception hinders recognition of the cost from the whole supply chain. This study suggest that full recognition of the cost of the empty space from the whole supply chain’ s perspective will facilitate and motivate collaboration between suppliers and buyers.

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