Apparatus for producing a highly elastic synthetic crimp...

Details Apparatus for producing a highly elastic synthetic crimp... Apparatus for producing a highly elastic synthetic crimp...

D - Textiles, Paper

02

G

118/26

D02G 1/04 (2006.01)

Patent

CA 1036879

ABSTRACT OF THE DISCLOSURE The invention relates to an apparatus for the production of a false-twist textured, highly elastic, synthetic crimp yarn with low residual shrinkage and latently bound crimp by stretching, false-twisting, heat- fixing and thermal after-treatment of the synthetic yarn at yarn draw-off rates of from 400 to 900 m/min. The thread tension during thermal after- treatment is 6 - 25% of the thread tension during heat-fixing. The time of thermal after-treatment is 2 - 5% of the time spent in heat-fixing and the temperature of the yarn during the thermal after-treatment is 30 - 100°C. The apparatus includes a delivery mechanism, a stretching roller, a heating means for fixing, a friction twister, a heating means for setting and a doubling spindle. The two heating means are connected in parallel in one heating system and their lengths are related to each other in proportions of from 20:1 to 50:1.

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