US Patent 7343938 Industrial two-layer fabric

An industrial two-layer fabric comprising pairs of an upper surface side warp and a lower surface side warp arranged vertically, and warp binding yarns woven with upper surface side wefts and lower surface side wefts to form a portion of an upper surface side surface design and a portion of a lower surface side surface design. Upper surface side warps and warp binding yarns are of the same diameter and lower surface side warps have a greater diameter than warp binding yarns and upper surface side warps. A lower surface side layer is designed so that lower surface side warps and warp binding yarns are arranged alternately, and one lower surface side weft passes over one lower surface side warp and one warp binding yarn adjacent to each other, and passes under a plurality of lower surface side warps and warp binding yarns.