Method of producing a staple fiber yarn
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United States of America Patent
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N/A
Issued Date -
Jul 25, 2002
app pub date -
Jan 23, 2002
filing date -
Jan 23, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method of centrifugally spinning a staple fiber yarn (17) comprising, in a first stage, drawing a feed material (6) by a drafting device (9) into a partially twisted yarn (11); and delivering the partially twisted yarn into a spinning centrifuge (3) via an axially shiftable yarn guidance tube (7); and in a second stage, further twisting the partially twisted yarn (11) into a finished yarn (17) while winding it onto a cheese (15). Before completion of the first stage, a yarn end from the cheese (15) is placed in the drafting device (9) onto the feed material and joined to the partially twisted yarn (11), the feed material (6) is separated, the yarn direction is changed and the partially twisted yarn (11) from the centrifuge (3) is withdrawn in the second stage from the centrifuge (3) and wound onto the cheese (15).
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