Arrangement for condensing a fiber strand
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United States of America Patent
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-
Jan 15, 2002
Grant Date -
N/A
app pub date -
Oct 13, 2000
filing date -
Oct 14, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Downstream of a drafting unit of a spinning machine, a condensing zone is provided, in which a drafted fiber strand still in an untwisted state is condensed by bundling. The condensing zone comprises a stationary suction slit, over which the fiber strand to be condensed is transported by an air-permeable transporting element. The suction slit defines the direction of a suction air stream by a guiding edge, which extends diagonally to the direction of motion of the transport element. The air stream positions the fibers of the fiber strand diagonally to the direction of motion of the transport element and so condenses the fiber strand. The suction slit begins with a starting width, which seizes the fiber strand to be condensed in its entire width. Directly downstream thereof the suction slit graduates in the form of a delta into a narrower effective width. The guiding edge continues an edge of the delta without deformation.
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