Analisis Perbaikan Kualitas Produk Outsole Sepatu Safety Menggunakan Metode PDCA di PT. XYZ

Abstract

This research analyzes the improvement of safety shoe outsole products using the PDCA method at PT. XYZ, aiming to identify defect causes and enhance product quality. In the initial stage, problem identification was carried out by collecting defect data, showing a dominant defect of 43% due to cracking, caused by human, method, material, and machine factors. In the Plan stage, Pareto diagrams, control charts, and Fishbone diagrams were used to identify the root causes of defects. In the Do stage, improvements were made through operator training, standardization of press machine temperature and pressure, and enhanced quality control. The Check stage showed a reduction in defects from 3.21% to 2.04%. In the Action stage, standard operating procedures, continuous training, and monitoring by the QC team were implemented to ensure sustained improvement. Suggested improvements include regular operator training, periodic machine calibration, raw material evaluation, and improved QC documentation and reporting. The research concludes that the PDCA method effectively identifies the root causes of defects, reduces defect rates, and improves the quality of safety shoe outsoles at PT. XYZ.