Abstract:
The objective of this research is to reduce wastes in the tire flap manufacturing process. This research is to apply the "Lean Manufacturing" concept and related techniques to reduce wastes in the manufacturing process. Using the principle of working study, value stream mapping, flow process chart, and flow diagram used to analyze the production wastes. This method helps to visualize the problem and waste activities such as value-added activities: VA, non-value-added activities: NVA, non-value-added but necessary activities: NNVA, and 7 wastes. After that, using the ECRS was used to help formulate ways to improve working methods with the 5W1H questioning technique. using to considering unnecessary work that can be eliminated and the activities work that can combine, reduction and elimination which are overproduction and distance reduction for each transportation process of product lines by re-layout. After improvement, Non-value added activities (NVA) was reduced from 19 to 0 activities, decreased 19 activities, or 100%. Non-value-added but necessary activities: NNVA was reduced from 92 to 81 activities, decreased 11 activities, or 12%. The work element was reduced from 119 to 88 activities, decreased 31 activities or 26%, The cycle time was reduced from 67 to 49 minute, decreased 18 minute or 26%, and the distance used to transport was reduced from 212 to 19 meters, decreased 193 meters or 91%.