Abstract
Abstract The manufacture of core yarn from polyester-cotton is one of the most important developments in the textile industry. The use of core yarns is mainly aimed at improving the strength, comfort, durability, aesthetics, and other functional properties of the final yarn. This article reports the results of investigation of core spun yarns made from polyester filament as core and cotton as sheath material manufactured using both ring and air-jet spinning systems. Polyester filaments with different proportions were chosen for the core component and cotton was used as the sheath. A total of twelve different core yarns were made on different spinning systems (i.e. six on air-jet and six on ring frame systems) and the yarn properties were compared with those of 100% cotton ringspun yarn. It was observed that core yarns had improved physical properties compared to 100% cotton ringspun yarn in many respects such as yarn strength, elongation, energy to break, and yarn imperfections. Only airjet core yarn showed lower yarn strength than 100% cotton yarn but the same yarn excelled in other properties compared to 100% cotton yarn.
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