Some studies on properties of wrapped jute/acrylic (parafil) yarns

Abstract

The effects of blend composition in the core and of wrap density on the properties of parafil yarns prepared using jute/acrylic fibres as core and polyester as wrapper filaments have been studied. It is observed that the unevenness, imperfections and mechanical properties of parafil yarn are greatly influenced by both blend composition and wrap density. With increase in acrylic component at comparable wrap density, the total imperfections, CV<Sub>m</sub>%, initial modulus, strength CV% and flexural rigidity show decreasing trend but hairiness index, tenacity, breaking extension, toughness and abrasion resistance tend to increase. With increase in wrap density the breaking extension and abrasion resistance decrease, whereas hairiness index, initial modulus, toughness and flexural rigidity increase. Tenacity first increases and then decreases with increase in wrap density, whereas CV_m% does not show any trend. As compared to jute parafil yarn, the conventional jute yarn shows less CV_m%, imperfections, extension at break, toughness and flexural rigidity but higher hairiness index, tenacity and abrasion resistance.