An Application of Preventive Maintenance Principles to Reduce the Machine Breakdown Time in the Handbag Manufacturing: A Case Study in Thai Silk Industry Co., Ltd.

Abstract

This research aims to study the use of principles preventive maintenance. To increase the efficiency and reduce the emergency breakdown time of the machines in the handbag manufacturing of Thai Silk Industry Co.,Ltd. by choosing to study in four groups of the machine which are Cutting Machines, Sewing Machines, Pressing Machine and Nearly Machine. The results from the sharpness priority of the problem by using QC tools control found that the group of Sewing Machines has the most loss from emergency breakdown so the researchers chose this machines group as the first priority to improve by using the cause and effect diagram to analyze the causes of problems to make a manual and preventive maintenance plan then set up the staff training and take action as the plan. The results of the experiment found that the average machine running time before improvement has the average increase from 7.42 hours to 11.22 hours accounted for 51.12%, the repair average before and after the improvement be as the same, the frequency of the breakdown average reduce from 30.25 times to 18 times accounted for 40.49%, The machine availability value increase from 84.38% to 92.22% accounted for 7.84%, the overall efficiency of the machines increase from 58.15% to 76.69% accounted for 18.53% and the rate of machines emergency breakdown reduced from 3.51% to 2.22% accounted for 1.31%.