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Process of preparing continuous filament composed of nano fiber

  • US 7,354,546 B2
  • Filed: 07/23/2003
  • Issued: 04/08/2008
  • Est. Priority Date: 02/24/2003
  • Status: Expired due to Term
First Claim
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1. A process of preparing a continuous filament composed ofnano fibers, which comprisesspinning a polymer spinning dope through nozzles onto a collector surface of water or an organic solvent and which has a conductive material disposed below the collector surface of said water or organic solvent,applying a high voltage to said nozzles and said conductive material, andthe nano fibers spun onto the surface of said water or organic solvent are pressed, drawn, dried and wound while being pulled by a rotary roller rotating at a constant linear velocity at a location spaced more than 1 cm from one end of a dropping spot where the spun polymer contacts the collector surface.

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