Patent ID: 7114529

Claim:
An industrial fabric comprising a system of warp and weft yarns interwoven according to a predetermined pattern, wherein: a) the warp and weft systems are each comprised of at least one set of yarns which are interwoven according to the predetermined pattern which forms a paper side planar surface and a machine side planar surface and which maintains the component yarns of each set in vertically stacked alignment throughout the fabric; b) the sets of warp and weft yarns are interwoven to provide diagonal apertures within the fabric; c) the air permeability of the fabric is at least about 7300 m 3 /m 2 /h; d) the warp fill of the fabric is at least 100%; e) the weft fill of the fabric is at least 75%; f) the predetermined pattern is selected so that the at least one set of warp yarns is interwoven with the at least one set of weft yarns so as to form warp yarn floats which pass over at least two weft yarns in the paper side planar surface without interweaving; and g) the height of the warp yarn floats above the paper side planar surface being from about (0.3 to 1.5)×h, where h is the thickness of the yarn.