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Publication of BE717994ApublicationCriticalpatent/BE717994A/xx
D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
D02G3/28—Doubled, plied, or cabled threads
D02G3/286—Doubled, plied, or cabled threads with alternatively "S" and "Z" direction of twist, e.g. Self-twist process