<![CDATA[The tea packaging industry requires consistent tea tag quality because it affects packaging performance and customer satisfaction. However, the cold seal coating process still faces various defects, such as blank coating, cold seal medium clumping, and blocking, which increase scrap and rework costs. This study aims to analyze and reduce product defects using the Six Sigma method and Failure Mode and Effects Analysis (FMEA) through the DMAIC stages. The analysis was conducted by calculating the sigma level, evaluating process stability using Control charts, identifying the root causes of defects through cause-and-effect diagrams, and determining improvement priorities based on the Risk Priority Number (RPN) value. Proposed improvements include standardizing process parameters, enhancing inspection procedures, training operators, and developing standard operating procedures (SOPs) along with periodic process Controls. The results of various studies show that the application of Six Sigma and FMEA can increase the sigma level from approximately 3.77 to 4.35, thereby improving process capability and stability. The main factors causing defects stem from inconsistencies in process parameters, material quality, and machine conditions. The implementation of the proposed improvements is expected to reduce the defect rate and improve the quality of tea tag products in the cold-seal coating process.]]>
Copyrights © 2026
