Patent ID: 7682995

Claim:
A triple layer industrial fabric having a paper side (PS) layer and a machine side (MS) layer comprising polymeric warp and weft yarns woven to a repeat pattern wherein: (i) all of the warp yarns are arranged as vertically stacked pairs; (ii) all of the weft yarns comprise pairs of intrinsic weft binder yarns, each having a first and second member each of which contributes to the structure of both the PS and the MS layers of the fabric and binds together the PS and MS layers; (iii) for each pair of the intrinsic weft binder yarns, the first and second members of the pair follow complementary identical paths in which the two pair members alternate with each other to appear in turn in the PS layer and the MS layer and cooperate to define a single continuous weft yarn path in both the PS layer and the MS layer whereby (a) when either the first or second member passes from the PS layer to the MS layer, the other member of the pair passes from the MS layer to the PS layer at an exchange point located between at least one common pair of warp yarns; and (b) the members of each pair are in adjacent contact at each of the exchange points; and (iv) at least one of the PS layer and the MS layer is woven to a plain weave pattern.