Method of producing a rotating air layer and false-twist air jet

Details Method of producing a rotating air layer and false-twist air jet Method of producing a rotating air layer and false-twist air jet

1988-12-15

1990-06-19

Levy, Stuart S.

Textiles: spinning, twisting, and twining

Apparatus and processes

False twist device

57328, 28271, 28274, D02G 104, D01H 528

Patent

active

049341332

ABSTRACT:
To improve the efficiency of a rotating air layer produced by an air injection nozzle and rotating in a substantially cylindrical space, the rotating air layer being intended to rotate a twisted fiber structure introduced through an inlet duct, there is provided a tube extension at the inlet duct. This tube extension forms a guide for the air flow injected tangentially and at an inclination by the air injection nozzle with respect to the direction of travel of the twisted fiber structure. As a result of this guide, the rotating air layer can form before it engages or contacts the twisted fiber structure. As a result there is increased the rotation of the engaged twisted fiber structure per unit length thereof, resulting in increased strength of the twisted fiber structure and the yarn ultimately produced therefrom with low air consumption.

REFERENCES:
patent: 3425359 (1969-01-01), Houle et al.
patent: 3490219 (1970-01-01), Ozawa et al.
patent: 4242859 (1981-01-01), Lundgren
patent: 4437302 (1984-03-01), Anahara et al.
patent: 4569193 (1986-02-01), Anahara et al.
patent: 4817843 (1989-04-01), Sano

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