Spinning RingMachine Parameter Setting to Minimalizethe Variation of String Stretch Quality by Taguchi Method

Abstract

One of the important factors that influence the firm sustainability is product quality. NE130/1 PEstring qualitycan be measuredusing the teststring stretchthread.Factors that influence the yarn are top roll diameter (A), distance of top back roll and top front roll, (B), distance clip thickness (C), and weight arms (D). Besides, there is an uncontrollablefactor namely room temperature. Initial parameters setting usedfor this stillvariesbecause ifduring the production processlaststhreadbreaks itwill changethe settings. For this combination,strength ofthe resultingyarnhas ahigh variationranged628to648gramsper piece. Taguchi method is applied to improve productperformance. Based on Taguchi method, the optimalfactor level combination is A2B2C2D2 (top roll diameter 28 mm, distance of top back roll and top front roll +1 mm, distance clip thickness 2.5 mm, and weight arms 14 kg/cm2