Lean Six Sigma Implementation to Reduce Rubber Sole Waste in the Manufacturing Company

Abstract

This study aim to research about the waste of rubber sole in the one of the rubber sole company in Tangerang. The company has a problem due to the amount of rubber sole waste is 5.5% over the company's standard, namely max.3.0%. There are 5 (five) largest type of rubber sole defect. They are dents, contamination, colour bleeding, lack of material and bubbles. To find out the factors that cause defects and how to provide suggestions for improvements to the problem. This research using the Lean Six Sigma method with the DMAIC approach (define, measure, action, improve, control). Furthermore, to find out the root cause of the problem will be using fishbone diagram tool and proposed improvements using the 5W+1H and FMEA. The purpose of the research is to find out the factors that cause of rubber sole waste over than company standards. The results of the research after making some improvements using 5W+1H and FMEA. The waste of the rubber sole to be 1.1%.