20—RADIUS CRIMPING OF SYNTHETIC-FIBRE CONTINUOUS-FILAMENT YARNS

Abstract

A method of bulking continuous-filament nylon yams in both monofilament and multifilament structures, by passing them over a heated-wire system, is described. Yarns produced under various conditions of temperature and tension are compared in knitted-fabric structures with similar fabrics knitted from the basic parent yarns. The percentage bulk increase is calculated by two methods: the assessment of stitch density and the use of a wad-weight test, from which area density can be derived.