This paper is concerned with the application of a modification process to cotton friction spun singles yarns. The experimental results show that the yarn modification process can effectively reduce or eliminate residual torque in dref-III singles yarns as well as fabric spirality in plain knitted structures. The properties and performance characteristics of yarns and fabrics are evaluated, including hairiness, diameter, evenness, tensile properties, and twist liveliness of the yarns, and thickness, weight, air permeability, thermal conductivity, bursting strength, and pilling resistance of the fabrics. The effects of yarn production parameters, relaxation, and modification processes are also discussed.
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