IMPLEMENTATION OF SIX SIGMA IN THE DMAIC APPROACH FOR QUALITY IMPROVEMENT IN THE KNITTING SOCKS INDUSTRY

Abstract

This study aimed to determine the level of sigma defects of socks and provide suggestions for quality improvements in reducing the percentage of socks defects. The scope of this research is in one of the garment industries with socks produced on the Lonati Single brand Knitting machine, which has decreased production due to production defects that do not meet the target. The methodology used in this study is the Define Measure Analyze Improve Control (DMAIC) approach and implementation of Six Sigma. The results of this study that the level of Sigma before a repair is 3.7017 and after the repair is 3.9614 and proposes that all improvement efforts be included in the Standard Operational Procedure (SOP) to be documented and applied because the percentage of socks defects decreased from 11.08% to 5.54%.