EFFICIENCY IMPROVEMENT OF SPRAY PAINT PRODUCTION PROCESS

Abstract

            The purposes of this research were: 1) to study primary problem of spray paint production, 2) to increase efficiency of spray paint production process, 3) to compare the productivity before and after spray paint production line 4 improvement, and 4) to analyze the engineering economics result.  The research instruments for collecting data were productivity daily record, productivity increased rules, work study, process analysis, 7 wastes, QC 7 tools, and ECRS in spray paint production process improvement.  The statistics used in the research were mean, percentage, and t-test.The research revealed that 1) The primary problem study was found that the case study company had production line problem on line 4 which could not reach the target goal at 80%.  The root cause was the delay of spray paint packing process. 2) The efficiency of spray paint production process improvement was found that the packing after the process improvement increased at 55.05%.  The packing steps decreased from 36 to 32 steps which equaled to 11.1 %.  The distance reduced from 70.03 to 51.19 meters which equaled to 26.9%.  The production time decreased from 132.17 to 9.78 minutes which equaled to 92.60%. 3) The comparison of productivity before and after spray paint production line 4 improvement was found that the labor productivity increased to 198.39 dozens per hour after the improvement.  The machine productivity increased to 198.39 dozens per hour.  The space utilization productivity increased to 129.15 dozens per square meter. 4) The engineering economics analysis was found that the dehumidifier investment which cost 35,000.00 baht could reduce the packing wage at 10,236.00 baht per month at the payback period of 3 months and 11 days.