Impact of Vacuum-Drying on Efficiency of Hardwood Products

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Impact of Vacuum-Drying on Efficiency of Hardwood Products ( impact-vacuum-drying-efficiency-hardwood-products )

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CHAPTER 7 PLANT C AND D SIMULATION AND FUTURE STATE MAP In chapter 6, it was determined that for the two flooring manufactures the inventory in the drying operation had the greatest impact on lead times. Inventory reduction can help to smooth production flow and minimize costs. Vacuum drying has the potential to dry lumber faster, which can reduce the inventories. One of the objectives of the project is to demonstrate how vacuum drying can impact the work in process, throughput and cycle time for a flooring manufacturer. This chapter presents the results of Little’s Law, simulation, and future state map for Plant C and D. Little’s Law was used to determine if the parts of the flooring production lines from Plant C and D VSMs were working efficiently. Little’s Law was also used to estimate the WIP for the simulation models. The simulations were performed based on the VSMs, and they were addressed for three different scenarios: 1) conventional drying 2) vacuum drying including air drying, 3) vacuum drying without air drying. The obtained results from the simulation were then compared with Little’s Law to determine which scenario was the best and, with this, to develop the future state map of both flooring manufactures (Plant C and D). Figure 10 shows a brief summary of the steps that were used to build the simulation models. 106

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