Textiles: manufacturing – Textile product fabrication or treatment – Fiber entangling and interlocking
Reexamination Certificate
2007-03-28
2008-12-23
Vanatta, Amy B (Department: 3765)
Textiles: manufacturing
Textile product fabrication or treatment
Fiber entangling and interlocking
C028S167000
Reexamination Certificate
active
07467446
ABSTRACT:
A system for hydroentangling a fabric material, while reducing the incidence of jet streaks therein, is provided. Various embodiments of the present invention provide an elongate hydroentangling jet strip spaced apart from the fabric material and extending substantially across a width of the fabric perpendicular to the processing direction. The strip defines a first row of orifices, each having a first diameter. The first plurality of orifices is spaced apart along a width of the elongate strip. The strip further defines a second plurality of orifices disposed downstream from the first plurality of orifices in the processing direction and offset therefrom along the width of the elongate strip. The second plurality of orifices each define a second diameter smaller than the first diameter such that fluid streams generated thereby impart a correspondingly smaller impact force on the fabric material than fluid streams generated by the first plurality of orifices.
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Begenir et al., “The Role of Orifice Design in Hydroentanglement”, Master of Science Thesis, North Carolina State University, Raleigh.
Ghassemieh et al., “Effect of Nozzle Geometry on the Flow Characteristics of Hydroentangling Jets”,Textile Res. J., 2003, pp. 444-450, vol. 73 No. 5.
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Anantharamaiah Nagendra
Pourdeyhimi Behnam
Tafreshi Hooman Vahedi
Alston & Bird LLP
North Carolina State University
Vanatta Amy B
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