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Process for preparing tapes from thermoplastic polymers and carbon fibers

  • US 4,588,538 A
  • Filed: 03/15/1984
  • Issued: 05/13/1986
  • Est. Priority Date: 03/15/1984
  • Status: Expired due to Fees
First Claim
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1. A process for preparing tapes from thermoplastic polymers and carbon fibers which comprises:

  • (a) spreading a tow of carbon fibers to provide substantially complete wetting of the carbon fibers when impregnated in a crosshead die;

    (b) feeding the tow into a crosshead die;

    (c) impregnating the tow in the crosshead die under pressure with a thermoplastic polymer to form a tape;

    (d) withdrawing the tape from the die; and

    immediately thereafter;

    (e) cooling the tape with a jet of gas.

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