Textiles: spinning – twisting – and twining – Apparatus and processes – With drafting
Patent
1988-08-24
1989-04-25
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
With drafting
57 5, 57331, 57336, 57339, 57401, D01H 528, D01H 112, D02G 104
Patent
active
048235458
ABSTRACT:
A false-twist spinning unit or apparatus comprises a first spinning disc, such as a top spinning disc and a second spinning disc, such as a bottom spinning disc rotating in opposite directions and arranged in staggered or offset relation at an inter-axis distance from one another such that friction rings thereof form a substantially rhomboid-like crossing surface. Disposed outside the friction rings are suction surfaces which engage the fibers of a sliver delivered from a nip line of an exit roll pair of a sliver feeder and convey such fibers to a yarn core line. The suction surfaces have suction apertures and sucked-off air is transported by suction nozzles coacting with the suction apertures. In operation, at the region of the nip line there is produced a false-twisted yarn core forming a spinning triangle. Edge fibers of the sliver remain outside the spinning triangle and are conveyed by the suction surfaces towards the yarn core line, yet not with the intent of forming a yarn core but for the purpose of being wound around the already formed yarn core. The finished or spun yarn is withdrawn from the false-twist spinning unit by a draw-off roll pair.
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"Textile Horizons" publication, vol. 36, No. 3, published Mar. 1983, pp. 22 to 24, Warley, West Midlands, Great Britain, article by G. W. Klawonn entitled False-twist: the third generation?.
"Melliand Textilberichte International" publication, vol. 63, No. 3, published Mar. 1982, pp. 175 to 181, Ludwigsburg, Germany, article by J. Lunenschloss et al, entitled Betrachtungen zum OE-Friktionsspinnen.
"Textile Horizons" publication, vol. 36, No. 3, published Mar. 1983, pp. 25 to 27, Warley, West Midlands, Great Britain, article by N. Shindo entitled Murata Lifts Speeds and Denier Range.
Kleeman Werner W.
Maschinenfabrik Rieter AG
Petrakes John
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