Abstract
Yarn input tension (YIT) during knitting has a profound impact on fabric quality. Modern high-speed circular knitting machines are mostly equipped with positive feed system, where a predetermined length of yarn is supplied to knitting zone. Several contributing factors affect YIT and keeping YIT in precise setting is a complex phenomenon. A plethora of studies addressed yarn tensile analysis for different knitting systems. However, a comprehensive description of generated YIT for a positive storage feed based circular weft knitting machine is still missing. This study aimed to navigate YIT mathematically through a model development by analyzing yarn tensile forces for different zones of yarn path in dynamic knitting operation. The model revealed several YIT contributing variables. After evaluating the governing equation, the impact of different variables, and their interdependence have also been discussed. The predicted YIT supported the actual YIT with a mean percentage error of around 10%.
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