Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics

DTEXTILES PAPER D02Yarns D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS YARNS OR THREADS

D02G1/00Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics

D02G1/002by knitting, weaving or tufting, fixing and then unravelling D02G1/004by heating fibres, filaments, yarns or threads so as to create a temperature gradient across their diameter, thereby imparting them latent asymmetrical shrinkage properties D02G1/006by impinging the yarn against an uneven surface and thereby deforming it D02G1/008with provision for imparting irregular effects to the yarn D02G1/02by twisting, fixing the twist and backtwisting D02G1/0206by false-twisting D02G1/0213after drawing the yarn on the same machine D02G1/022while simultaneously drawing the yarn D02G1/0226multiple false-twisting D02G1/0233with real twist being imparted to the yarn before or after false-twisting D02G1/024with provision for imparting irregular effects to the yarn D02G1/0246at least some of the filaments being simultaneously broken or cut D02G1/0253while bonding at least some of the filaments or fibres together D02G1/026in the presence of a crimp finish D02G1/0266false-twisting machines D02G1/0273threading up and starting the false-twisting machine D02G1/028by twisting or false-twisting at least two filaments, yarns or threads, fixing the twist and separating the filaments, yarns or threads D02G1/0286characterised by the use of certain filaments, fibres or yarns D02G1/0293composed, at least in part, of natural fibres D02G1/04Devices for imparting false twist D02G1/06Spindles D02G1/08Rollers or other friction causing elements D02G1/082with the periphery of at least one disc D02G1/085between crossed belts D02G1/087between the flanks of rotating discs D02G1/10using knife edges D02G1/12using stuffer boxes D02G1/122introducing the filaments in the stuffer box by means of a fluid jet D02G1/125including means for monitoring or controlling yarn processing D02G1/127including drawing or stretching on the same machine D02G1/14using grooved rollers or gear-wheel-type members D02G1/16using jets or streams of turbulent gases D02G1/161yarn crimping air jets D02G1/162with provision for imparting irregular effects to the yarn D02G1/164in the presence of a liquid D02G1/165characterised by the use of certain filaments or yarns D02G1/167including means for monitoring or controlling yarn processing D02G1/168including drawing or stretching on the same machine D02G1/18by combining fibres, filaments, or yarns, having different shrinkage characteristics D02G1/20Combinations of two or more of the above-mentioned operations or devices After-treatments for fixing crimp or curl D02G1/205After-treatments for fixing crimp or curl