Analisis Sistem Pengendalian Kualitas pada Proses Pembuatan Benang Karet (Rubber Thread) di PT. Industri Karet Nusantara Medan

Abstract

This study aims to analyze quality control system in the process of rubber thread production at the PT.Industri Karet Nusantara Medan. In this research the problem solving process was gained with the data processing using seven tools and I steps of Quality Control Cirele and with Expert Choice Software version 2000 to explore the dominont cantse on the largest defect. This research result showed that the Molted Thread was the lorgest defect. Tlrcrefore, this defect was the priority. Exprt Choice sofiware resulted dominant Molted Thread defect caused by materialswith 4Z% ofvalue. The cause of defect on material that latex used on the compound mabing proeess was not stable and non homogeneous that effect to the extraction process. This was caused by the value of MST and TSC that doesn't meet the standard. Based on experiment, gained that optimal setting of MST value was 650 second and TSC value was 61.5%. I{ith MST value 650 defects that gained at the Rubber Threat production process con be reduced.