Patent ID: 7484537

Claim:
An industrial two-layer fabric comprising an upper side layer and a lower side layer, wherein the upper side layer being comprised of an upper surface side warp that forms a warp design on an upper side surface, an upper surface side weft and a warp binding yarn for weaving an upper surface side weft and a lower surface side weft to bind the upper layer and the lower layer, wherein the lower side layer being comprised of a lower surface side warp, a lower surface side weft and the warp binding yarn, further wherein, in a repeating unit of the industrial two-layer fabric: a first upper surface side warp that forms the warp design is disposed adjacent to three warp binding yarns; each of the three warp binding yarns forms a binding yarn design by passing over one or two successive upper surface side wefts to form a knuckle on the upper side surface; the three warp binding yarns appear on the upper side surface in turn, pass over respectively different upper surface side wefts, and form, on the upper side surface, knuckles, so that at least one upper surface side weft exists between any two of the knuckles; and the three warp binding yarns get together and form, adjacent to the first upper surface side warp, the warp design.