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Method of forming a mask

  • US 4,670,205 A
  • Filed: 05/02/1985
  • Issued: 06/02/1987
  • Est. Priority Date: 07/15/1981
  • Status: Expired due to Fees
First Claim
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1. A method of forming a flexible mask for honeycomb structures comprising the steps of:

  • mixng a polymer material;

    applying said mixed polymer material to a die piece having a mask forming surface, and a plurality of bores extending therethrough and through said mask forming surface;

    causing a portion of said mixed polymer material to fill said plurality of bores while being integral with a layer of the remaining mixed polymer material on said mask forming surface;

    curing said mixed polymer in said die piece to form a flexible body with flexible protrusions;

    removing the cured polymer flexible body from said die piece; and

    boring a plurality of openings through said cured polymer body.

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