Apparatus for applying Twist texturing 's' and 'Z' in conventional stretching machines, Twisting multifilament Synthetic

摘要

The present invention relates to the manufacture of textile multifilament yarns and, in particular, to a device for twisting multifilament yarns in conventional drawtwister machines. The device includes a pair of twisting rollers mounted to rotate freely on shafts, the axis of which are arranged with a substantial angle between them and in spaced apart and parallel planes. One twisting roll is a straight cylinder mounted on a fixed shaft whose axis is perpendicular to a supporting plate. The other is a frustrum with concave walls and a determined radius of curvature and is mounted on a shaft whose axis is parallel to the surface of the supporting plate. The supporting plate of the twisting device is installed on a surface of the drawtwister machine so that the shaft of the concave roll forms an angle of about 40 DEG -50 DEG relative to an imaginary line connecting the yarn fastening roller and the surface of the godet. Twist in the yarn is set by heating the filament by of a suitable heating element before the yarn passes around the twisting rollers.