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Wet-formed mat applications for cement backerboards

  • US 6,579,413 B1
  • Filed: 03/21/2002
  • Issued: 06/17/2003
  • Est. Priority Date: 03/21/2002
  • Status: Expired due to Fees
First Claim
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1. A method for forming a random open mesh filament network for use in reinforced cement backerboards comprising:

  • forming a thick slurry of a whitewater chemical dispersion having a plurality of wet use chop strands and a plurality of dry chop fiber strands, wherein the ratio by weight of said plurality of wet use chop strands and said plurality of dry use chop strands within said mixture is between approximately 3;

    1 and 1;

    3;

    introducing said thick slurry to a thin stock stream slurry to form a lower consistency slurry, introducing said lower consistency slurry to a former, aligning said plurality of wet use chop strands and said plurality of dry chop fiber strands within said former to form the random open mesh filament network, wherein a substantial amount of said dry chop fiber strands form randomly oriented logs; and

    partially drying the random open mesh filament network.

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