D - Textiles – Paper – 01 – D
Patent
D - Textiles, Paper
01
D
18/622
D01D 5/253 (2006.01) D01D 5/16 (2006.01)
Patent
CA 1264004
ABSTRACT A method for producing flat yarn of polyester, in particular, polyethylene terephthalate, or polyamide, in which a plurality of filaments is spun in a continuous succession with the use of an arrangement of draw rolls, combined to a yarn, and drawn, with the force for the drawing being exerted by fluid friction as well as by the looping of a stationary braking surface which is curved in the direction of the advancing yarn, characterized in that the filaments advancing from the spinning zone are combined to parallel filament bundles and guided through a band of fluid, which is applied to a surface in a metered quantity, and extends in the direction of the advancing yarn, with the fluid being supplied in such a metered quantity, that the supplied quantity of the fluid per unit of time corresponds to more than 20% of the advanced quantity of yarn per unit of time, and that the ability of the filament bundle to internally absorb the liquid is exceeded, that the filament bundle is soaked and the external surface of the filament bundle is surrounded by a liquid coating, that the filament bundle is, in this soaked condition, guided at a speed of more than 1000 m/min over several curved braking surfaces, one following the other, with alternating direction of curvature in the yarn path, and withdrawn by a draw roll at a speed higher than 3,500 m/min, with the overall length of the braking surfaces and the yarn speed being so adjusted to each other that the bundle of filaments is subjected to a yarn tension, which is adequate for a plastic drawing, and that a spinning finish is applied to the bundle of filaments before or after the arrangement of draw rolls.
491623
Erren Karl-Heinz
Petersen Hans-Joachim
Borden Ladner Gervais Llp
Damhorst,hubert
Erren Karl-Heinz
Petersen Hans-Joachim
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