YARN (VERSIONS), YARN MANUFACTURE METHOD AND APPARATUS (VERSIONS) Russian patent published in 1998 - IPC

FIELD: textile industry. SUBSTANCE: yarn is produced from smoothed out staple filaments of any kind or from mixed filaments. Structure of yarn is such that filaments migrate between yarn core and surface so that part or parts of each filament are trapped and fastened across yarn section with parts of its other filaments. Method involves providing continuous migration of filaments supplied by front drawing or discharge cylinders prior to twisting through cyclic changing of tension of separate filaments at point of application of twisting force; subjecting portion of filaments to high tension and simultaneously applying low or zero tension to remaining portion of filaments. Apparatus has thread guide positioned behind discharge cylinders for rocking along line or in plane extending in parallel with gap between discharge cylinders to provide for cyclic changing of tension of filaments supplied by discharge cylinders. EFFECT: increased efficiency, simplified construction and method. 16 cl, 6 dwg