Method and apparatus for producing slub yarn

Details Method and apparatus for producing slub yarn Method and apparatus for producing slub yarn

1985-09-30

1987-05-12

Petrakes, John

Textiles: spinning, twisting, and twining

Apparatus and processes

Covering or wrapping

57 91, 57207, 57208, 57284, D02G 334, D02G 102

Patent

active

046639276

ABSTRACT:
A slub yarn, in which a sheath component is wound around a core component to form a plurality of slub portions along the axis of the yarn, which structure is obtained by simultaneously false-twist texturing the core and sheath components. The slub yarn has a feature that the slub portion includes a multilayered winding structure of seven or more layers of the sheath component wound around the core component. A method for producing the slub yarn includes a step of overfeeding a sheath component to a core component in the direction substantially perpendicular to a passage of the core component in a twisting zone of a false-twist texturing machine while the sheath component is guided by a guide repeatedly traversed along a passage of the core component, a distance between the guide and the passage of the core component being kept in a range not shorter than 10 cm. An apparatus for randomly traversing the sheath component along the core component during the false-twist texturing process is also provided.

REFERENCES:
patent: 3945189 (1976-03-01), Allen
patent: 3952496 (1976-04-01), Nagel et al.
patent: 4010601 (1977-03-01), Anahara et al.
patent: 4124973 (1978-11-01), Hense et al.
patent: 4566259 (1986-01-01), Durand

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