Pallet Recovery Model Based on Modified Pallet Pool System

To improve the utilization rate of pallets,a modification was made to the traditional pallet pool system.In the modified pallet pool system,a consignee could use received pallets to dispatch cargos as a consigner,reducing at least twice times of transportation of empty pallets.Two pallet recovery models,an integer programming model and a stochastic programming model with uncertain pallet supplies,were presented.The objective of the models is the minimum pallet recovery cost,and their constraints include the cost and capacity of inventory and transportation,and demand and supply.The validity of the models was demonstrated by case study.