The Quality Control to Reduce Defects in RTB Textile Material Folding Using the Quality Control Circle (QCC) Method at PT Evoluzione Tire Pengendalian Kualitas Untuk Mengurangi Defect Material Textile RTB Melipat Dengan Metode Quality Control Circle (QCC) Di PT Evoluzione Tyre

Abstract

PT Evoluzione Tyres is a company engaged in the motorcycle tire manufacturing industry. In the semi-finishing section of tire frame manufacturing, many defective products are still found in RTB textile materials with an average defect percentage during the period of August 2023-January 2024 of 1.3% per month, while the company's targeted standard limit is 0.6% per month, so research is needed to reduce the level of defective products. This study uses the Quality Control Circle (QCC) method with the PDCA cycle, there are 8 (eight) steps to analyze starting from determining the theme to the final stage, namely standardization. The results of the study show that there are 9 (nine) types of defects identified, the most dominant types of defects are the initial folding complex (25%), the middle-end folding complex (44.29%), and textile (2,3,4) folding (13.63%). The factors causing defects come from human, material, method, and machine factors. The proposed improvements use the 5W1H principle which is expected to reduce the level of defects in RTB textile material products.