Plastic and nonmetallic article shaping or treating: processes – With twining – plying – braiding – or textile fabric formation
Reexamination Certificate
2007-02-16
2010-06-22
Del Sole, Joseph S (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
With twining, plying, braiding, or textile fabric formation
C264S555000, C264S211140, C425S072200, C425S066000, C425S19200R, C425S131500
Reexamination Certificate
active
07740777
ABSTRACT:
A spunbond system for manufacturing a non-woven web of fibers includes a spin beam assembly configured to process and deliver a plurality of polymer streams for extrusion through spinneret orifices. The spin beam assembly includes a plurality of manifold sections within the spin beam assembly, each manifold section including a distribution pipe configured to transfer a respective polymer component to a plurality of piping sections extending within the manifold section and a heat transfer medium that flows within the manifold section and around the piping sections extending into the manifold section so as to maintain the respective polymer component at a selected temperature. The system further includes a quenching zone configured to receive and quench extruded filaments from the spinneret orifices, a drawing unit in communication with the quenching zone and configured to receive and attenuate the quenched filaments, and a forming surface configured to receive drawn filaments emerging from the drawing unit and form a non-woven fibrous web on the forming surface.
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Balk Hermann
Wilkie Arnold
Del Sole Joseph S
Edell Shapiro & Finnan LLC
Hills, Inc.
Reifenhauser GmbH & Co. Maschinenfabrik
Wu Vicki
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