Study on physiological comfort of fabrics made up of structurally modified friction-spun yarns: Part I – Vapour transmission

31-37The effect of sheath fibre proportion, fibre fineness, and yarn fineness on physiological comfort related properties such as air permeability, water vapour permeability and thermal conductivity of Dref-III friction-spun yarn fabrics has been studied with an objective to analyse the feasibility of modified yarns for apparel end use. Samples have been prepared using polyester filament fibre as core, viscose staple fibre as secondary core and water soluble polyvinyl alcohol as sheath. It is observed that the structural modification of yarn influences the comfort related properties, effecting the vapour transmission behavior