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Needling loops into carrier sheets

  • US 7,465,366 B2
  • Filed: 04/08/2005
  • Issued: 12/16/2008
  • Est. Priority Date: 12/03/2002
  • Status: Expired due to Fees
First Claim
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1. A method of making a sheet-form loop fastener product, the method comprisingplacing a layer of staple fibers against a first side of a flexible paper substrate;

  • needling fibers of the layer through the paper substrate by piercing the substrate with needles that drag portions of the fibers through holes formed in the paper substrate during needling, forming loops of the fibers extending from the holes on a second side of the paper substrate;

    selecting needling parameters so that the loops have a size and structure selected to engage a field of corresponding male fastener elements; and

    anchoring fibers forming the loops sufficiently to resist pull-out loads caused by releasable engagement with the male fastener elements.

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