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Method for elevated temperature electrospinning

  • US 7,901,610 B2
  • Filed: 01/10/2008
  • Issued: 03/08/2011
  • Est. Priority Date: 06/29/2004
  • Status: Active Grant
First Claim
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1. A method for melt electrospinning production of non-woven fabric from meltable thermoplastic polymer or meltable thermoplastic polymer nanoclay nanocomposite, said method comprising the steps of:

  • (a) melting thermoplastic polymer or nanocomposite in a melting zone, wherein shielding with an electrostatic shielding element is provided;

    (b) moving the melted thermoplastic polymer or nanocomposite through the melting zone by a force supplier upstream of or in the melting zone;

    (c) providing an electric charge on the melted polymer to overcome the surface tension on the melted polymer to produce a jet of melted polymer or nanocomposite and provide unstable flow involving a plurality of electrically induced bending instabilities/whipping motions and elongation of and production of polymer or nanocomposite fibers; and

    (d) collecting of the elongated fibers to form a non-woven fabric.

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