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Method of shaping structures with an overcoat layer including female urinary catheter

  • US 5,670,111 A
  • Filed: 08/02/1994
  • Issued: 09/23/1997
  • Est. Priority Date: 01/10/1990
  • Status: Expired due to Term
First Claim
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1. A method for producing a shaped article, said method comprising:

  • (a) providing an inner piece;

    (b) forming a shaped structure on said inner piece by placing a residual coating of a bond-preventing agent on said inner piece;

    (c) shaping said residual coating of said bond-preventing agent into at least a plurality of sections, each of said sections being of a different thickness, using a process comprising coating portions of an outer surface of said inner piece with a bond preventing agent in a plurality of dipping steps, wherein the inner piece is immersed into the bond-preventing agent to a desired depth for a desired length of time, and subsequently removed therefrom, wherein the desired depth and the desired length of time for each of the plurality of dipping steps is prescribed so that a residual coating of bond-preventing agent remains on portions of the inner piece following said plurality of dipping steps, said residual coating having varying thickness as a result of variation between the depth of any two of said plurality of dipping steps and the speed the bond-preventing agent is removed from the inner piece; and

    (d) subsequently coating the shaped structure of said bond-preventing agent with a liquid composition to form a shaped overcoat layer, wherein the shape of the overcoat layer results from the shape of the shaped structure of said bond preventing agent.

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