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Electrospun filaments

  • US 11,090,850 B2
  • Filed: 09/18/2014
  • Issued: 08/17/2021
  • Est. Priority Date: 09/18/2013
  • Status: Active Grant
First Claim
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1. A method for producing a continuous filament from electrospun fibres, comprising:

  • passing a conducting wire through free space to provide an elongate, three-dimensional collection surface accessible to electrospun fibres coming into contact with the conducting wire;

    moving the conducting wire in a direction along its length;

    forming an attractive electric field gradient between the conducting wire and a source of electrically charged fibres;

    wherein the conducting wire is moved relative to the source of electrically charged fibres;

    collecting the fibres on the elongate, three-dimensional collection surface of the conducting wire so as to form a continuous filament along the length of the underlying conducting wire;

    wherein the elongate, three-dimensional collection surface of the conducting wire has a three-dimensional shape accessible in free space and the continuous filament thereby being formed with a corresponding three-dimensional shape that corresponds to the three-dimensional shape of the underlying conducting wire; and

    separating the continuous filament from the elongate, three-dimensional collection surface of the underlying conducting wire whilst retaining the corresponding three-dimensional shape of the continuous filament.

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