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CHAPTER 8 OVERALL SUMMARY, CONCLUSIONS AND FUTURE WORK 8.1 OVERALL SUMMARY As secondary wood products try to increase their competitiveness, many are moving towards leaner manufacturing processes. Lumber drying, typically a large-batch process, is a monumental barrier against sustainable lean improvement. Vacuum drying has been shown to reduce drying; therefore, it might be the technology that can help U.S hardwood industries to become leaner and more competitive in the market. This project analyzed differences in quality, drying times and costs between conventional and vacuum drying. It also determined whether vacuum drying can be an economically viable operation. Finally, it analyzed the impact of vacuum drying regarding cycle time, throughput and WIP in two flooring manufacturers. Companies that sell and use vacuum drying and three flooring manufactures that use conventional drying were contacted to gather information about quality, drying times and costs. Data collection instruments were mailed to the companies to gather the information from quality, and for drying times and costs some were mailed and others were asked directly to the production manager. Two case studies were developed to determine the feasibility of conventional and vacuum drying. Three scenarios (conventional, vacuum with air drying, vacuum with no air drying) for both case studies were created to determine the feasibility of conventional and vacuum drying. Costs obtained from the first analysis were the basis for the model. 123PDF Image | Impact of Vacuum-Drying on Efficiency of Hardwood Products
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