Patent ID: 7699949

Claim:
A method of making a fabric having increased thickness comprising: (a) providing a scrim-type, braided, interwoven or knitted fabric comprising weft yarns and twisted together warp yarns, (b) applying a tensile force to said warp yarns, wherein at least some of the twisted together warp yarns are at least partially untwisted by tension applied thereto to apply torque to each of the weft yarns causing each said weft yarns between adjacent warp yarns to become undulated into a sinusoidal profile comprised of “C” shaped configurations having inflection points located substantially only at intersection points with said twisted together warp yarns, wherein the thickness of the fabric as measured from the high point and the low point of the sinusoidal profile increases; and (c) binding said fabric with a polymeric resin coating substantially binding said weft yarns in the sinusoidal profile, whereby said undulated weft yarns become substantially fixed.