Integration of SQC and TRIZ to Reduce Batik Fabric Defects in The Dyeing and Scouring Process at PT. Batik Danar Hadi

Abstract

Product quality is a crucial factor in maintaining the competitiveness of the batik industry, including at PT. Batik Danar Hadi. This company faces issues with defects in batik fabric, particularly during the dyeing and scouring processes. This research aims to identify the types and main causes of defects, and to formulate technical solutions through the integration of Statistical Quality Control (SQC) and TRIZ methods. SQC was performed using check sheets, histograms, u-control charts, pareto diagrams, and fishbone diagrams. The results show that the dominant defects are ciri (holey) and mottle, with a contribution of 92%. Production deviations occurred in March and April, where the u-chart value exceeded the upper control limit. The five main causes of defects include machines, methods, raw materials, labor, and environment. TRIZ is used to formulate solutions based on contradiction parameters and inventive principles, resulting in technical solutions such as segmentation, rapid action, and the use of composite materials. The integration of SQC and TRIZ has proven effective in systematic quality improvement.