Problems associated with the Heat Setting of Nylon, Acrylic and Polyester Carpet Yarns

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Abstract
Heat‐set yarns are being used increasingly in cut‐pile carpets, and these treatments entail particular attention to dye selection, whether the fibre is dyed before or after setting. Some of the adverse effects of heat setting e.g. colour changes due to dye instability, are immediately obvious, but others, e.g. an increased sensitivity of the dye to certain agencies encountered during wear, are more insidious. A number of these effects have been studied with particular reference to variations in the setting temperatures appropriate to each fibre.

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