Method and apparatus for false twist spinning

Details Method and apparatus for false twist spinning Method and apparatus for false twist spinning

1992-05-05

1993-08-24

Stodola, Daniel P.

Textiles: spinning, twisting, and twining

Apparatus and processes

With drafting

57318, 57331, 57333, 57334, 57350, D01H 1500, D01H 1115

Patent

active

052378101

ABSTRACT:
A novel false twist spinning process in which a sliver (60) is twisted by a mechanical force-twisting device (58) between the front rollers (54) of the drafting unit (51) and the draw off rollers (59). The spinning tension is so adjusted that the false-twisted sliver (60) is prevented from assuming a helical shape and a balloon shape at least in the zone between the nip line (10) of the drafting unit (51) and a yarn guiding element (55) disposed before the false twisting device. In an apparatus for the practice of the process, the mechanical false twisting device (58) comprises discs (58A) or aprons (58B) and the yarn guiding element (55) comprises of a false twisting nozzle (55A, 55B).

REFERENCES:
patent: Re31705 (1984-10-01), Morinashi
patent: 3488941 (1970-01-01), Asaka
patent: 4124972 (1978-11-01), Arai et al.
patent: 4406116 (1983-09-01), Maier
patent: 4509322 (1985-04-01), Briner et al.
patent: 4519204 (1985-05-01), Dammann et al.
patent: 4674274 (1987-06-01), Kato
patent: 4852341 (1989-08-01), Kato et al.
patent: 4959952 (1990-10-01), Kato et al.
Krause, H. W. "Wirkungsweise Verschiedener Drallelemente Beim Falschdraht-Spinnen" Melliant Textilberichte, Jan. 1987, pp. 7-11 (no translation).

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