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Methods for forming a fluted composite

  • US 6,630,054 B1
  • Filed: 09/18/2000
  • Issued: 10/07/2003
  • Est. Priority Date: 03/19/1998
  • Status: Expired due to Fees
First Claim
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1. A method for forming a fibrous web, comprising the steps of:

  • (a) forming a first foam slurry comprising fibers and a surfactant in an aqueous dispersion medium;

    (b) forming a second foam slurry comprising fibers and a surfactant in an aqueous dispersion medium;

    (c) moving a first foraminous element in a first path;

    (d) moving a second foraminous element in a second path, a nip area provided at a location along the first and second paths;

    (e) passing the first slurry into contact with the first foraminous element moving in the first path;

    (f) passing the second slurry into contact with the second foraminous element moving in the second path;

    (g) passing a third material between the first and second slurries, wherein the third material does not contact the foraminous elements, and wherein the third material is introduced at a plurality of points; and

    (h) withdrawing foam and liquid from the first and second slurries and third material through the first and second foraminous elements, respectively, to provide a fibrous web.

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