A Statistical Quality Control System in a Medium-Scale Weaving Mill: I. Control of Fabric Defects

Abstract

Establishing a control system in a medium-scale weaving mill by using statistical process control techniques was worked on and considered that the control system also would be a model for weaving mills. To determine production parameters and control them according to a definite sampling plan, the loom stoppages were investigated with their reasons and the defects on the fabric were detected during running of looms in process inspection. Therefore three different kinds of cord and a poplin fabric were observed. Analysis of loom-stoppages gives information about problems which are present in yarns, weaving preparation, weaving processes, and particularly indicates yarn quality, weaving machine adjustments and weaving preparation processes. In conclusion of woven fabric quality evaluations it was determined that the rate of defects originated from yarn is rather higher than that of defects originated from weaving preparation/weaving process.

Keywords

• İstatistiksel proses kontrol, Dokuma işletmesi, Sondaj kontrolü, Dokuma kumaş hataları, Dokuma makinesi duruşları, Kontrol kartları.