Core yarn production method and apparatus

Details Core yarn production method and apparatus Core yarn production method and apparatus

2006-05-17

2008-10-21

Hurley, Shaun R (Department: 3765)

Textiles: spinning, twisting, and twining

Apparatus and processes

Covering or wrapping

C057S022000

Reexamination Certificate

active

07437867

ABSTRACT:
An elastic core fiber is caught to prevent production of a core yarn having no elastic core fiber. In a method for producing a core yarn by supplying a sliver to a drafting device in a predetermined amount and merging a core fiber with the sliver, the sliver is supplied to the drafting device in an amount greater than the predetermined amount over a predetermined period of time after spinning is started, so as to merge with the core fiber, and thereafter, the sliver is supplied to the drafting device in the predetermined amount. Preferably, the amount of sliver that is supplied to the drafting device is changed in accordance with the rotational speed of predetermined draft rollers in the drafting device.

REFERENCES:
patent: 2990673 (1961-07-01), Adkins
patent: 3913308 (1975-10-01), Lemaire
patent: 4614081 (1986-09-01), Kim
patent: 6370858 (2002-04-01), Mori
patent: 2002/0139102 (2002-10-01), Kawabata
patent: 2006/0096271 (2006-05-01), Yamamoto et al.
patent: 2002-363834 (2002-12-01), None

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