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Spinning process and apparatus

  • US 4,294,783 A
  • Filed: 04/09/1980
  • Issued: 10/13/1981
  • Est. Priority Date: 04/09/1979
  • Status: Expired due to Term
First Claim
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1. A process for the centrifugal spinning of fibres, utilizing the centrifugal spinning cup comprising a hollow cylinder with a plurality of discrete passages positioned around and extending through its circumferential wall from the interior cylindrical surface of the cup, the inlets to the passages being wider then the outlets and contiguous so that all the fibre-forming material flowing over the interior cylindrical surface from the supply region towards the inlets is directed, by the contiguous passage inlets, into the passages;

  • said method comprising the steps of;

    supplying a fibre-forming material in liquid form to the interior cylindrical surface at an area axially spaced from the passages so that the material must flow over a portion of the interior cylindrical surface before reaching the passages;

    dividing all the fibre-forming material into a plurality of separate streams at the contiguous inlets of the passages, the fibre-forming material flowing into the passages;

    rapidly spinning the cup; and

    collecting formed fibres from the passages.

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