Statistical approach to minimize waste in tyre manufacturing process : a case study

Abstract

The main focus of this study was to assess the wastes occurring because of defect tyres in air tyre manufacturing process in the Loadstar Pvt. Limited. This lost accounts for 37.75 million during the last five months. In this study a complete statistical analysis about defect tyres were carried out for five tyre types in air tyre manufacturing process by means of Parato diagram. The average run lengths were found for each tyre type. Explanatory statistical analysis revealed that the defect tyre cost is high due to factors such as under cure, bladder pleat, air bubble in, plate damage, air bubble lug, low pressure and less side wall thickness. These statistical analyses are recommended to help manufacturers to identify the exact issues in the manufacturing process and rectify those.