Fabric assistance in woven structures made from different spun yarns

Abstract

The effect of different spun yarns on fabric assistance has been studied considering the structural parameters, such as yarn-to-yarn friction, strength of ring, rotor, air-jet and OE-friction spun yarns and the strength of fabrics made from these yarns. The ratio of the fabric strip strength per yarn and the corresponding single yarn strength is considered as a measure of quantifying the fabric assistance. Mechanism of yarn failure inside the fabric is different as that of single yarn and the former exhibits more fibre rupture. Fabrics made from weaker yarns have higher ratio of strip strength to single yarn strength than that made from stronger yarns due to larger increase in the percentage of rupture fibres in the former. The fabric assistance also depends, to some extent, on the degree of gripping of the yarns that is influenced by the yarn-to-yarn friction, extent of yarn flattening and yarn diameter.