Hydrodynamic needling apparatus
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United States of America Patent
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-
Mar 4, 2008
Grant Date -
Feb 2, 2006
app pub date -
Jun 1, 2005
filing date -
Jul 29, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A hydrodynamic needling apparatus for use on a textile web moving in a longitudinal web-travel direction has a first array of needle-jet orifices emitting respective needle-jet sprays extending in the travel direction between the respective orifices and the web, the array extending transversely across a full transverse width of the web at a substantially constant spacing therefrom with the sprays forming an angle greater than 0.degree. and less than 90.degree. with the web-travel direction. There is a similar second array of needle-jet orifices, but with it the orifices are directed at the same angle but oppositely to the sprays of the first array. Thus the sprays of the first array are directed to one side and the sprays of the second array to an opposite side from the respective arrays.
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