Method for producing an effect yarn on an open-end rotor...

Details Method for producing an effect yarn on an open-end rotor... Method for producing an effect yarn on an open-end rotor...

2004-10-13

2008-11-25

Hurley, Shaun R (Department: 3765)

Textiles: spinning, twisting, and twining

Apparatus and processes

Open end spinning

C057S263000

Reexamination Certificate

active

07454889

ABSTRACT:
A method for producing an effect yarn on an open-end rotor spinning machine, formed from an alternating line-up of yarn sections and effects consisting of pre-determined thickenings, wherein an effect is produced where the yarn is joined by means of a piecing end, in the piecing region of the yarn located downstream of the piecing end, following a break in the thread. The quality of the yarn produced in this way is improved such that unwanted deviations from the pre-determined repeat of pattern of the effect yarn, caused by piecing regions, are eliminated.

REFERENCES:
patent: 4825632 (1989-05-01), Raasch et al.
patent: 5509261 (1996-04-01), Wassenhoven et al.
patent: 6035622 (2000-03-01), Fox et al.
patent: 7082746 (2006-08-01), Brandl et al.
patent: 2002/0073683 (2002-06-01), Zipperer
patent: 40 30 100 (1992-04-01), None

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