Industrial two-layer fabric

Abstract

An industrial two-layered fabric includes a front side fabric with warps and wefts and a back side fabric with warps and wefts. The front and back side fabrics are bound by binding warps. A first pair of warps consists of the front side warp and back side warp. A second pair of warps consists of two binding warps. A mutually complementary structure presents where one of the two binding warps forms consecutive knuckles on the front surface while another one of the two binding warps does not emerge on the front surface side, and where the another one of the two binding warps forms consecutive knuckles on the front surface whereas the one of the two binding warps does not emerge on the front surface side. A back side warp and an adjacent binding warp form knuckles below a one back side weft and another one back side weft.

What is claimed is: 
     
         1 . An industrial two-layered fabric comprising:
 a fabric on a front surface side comprising a warp on the front surface side and a weft on the front surface side; and   a fabric on a back surface side comprising a warp on the back surface side and a weft on the back surface side, wherein the fabric on the front surface side and the fabric on the back surface side are bound by a binding warp, and including:   a first pair of warps consisting of the warp on the front surface side and the warp on the back surface side, and   a second pair of warps consisting of one binding warp having a function of binding the fabric on the front surface side and the fabric on the back surface side and another binding warp; and   a mutually complementary structure where the other of the binding warps does not emerge on the front surface side at a portion where a plurality of knuckles are consecutively formed on the front surface side by the one of the binding warps constituting the second pair of the warps on the fabric, and the one of the binding warps does not emerge on the front surface side at a portion where a plurality of knuckles are consecutively formed on the front surface side by the other of the binding warps,   wherein   the warp on the front surface side and the binding warp are formed of yarns of the same diameter,   the warp on the back surface side is formed of a yarn having a larger diameter than the warp on the front surface side and the binding warp,   two second pairs of the warps are arranged to be adjacent to each other between two first pairs of the warps, and such an arrangement is repeated, and   in the fabric on the back surface side, out of the warp on the back surface side, the binding warp, the binding warp, and the warp on the back surface side arranged in order in the horizontal direction, the warp on the back surface side and the binding warp that are adjacent to each other form a first set to form a knuckle on the same weft on the back surface side, and then the binding warp and the warp on the back surface side that are adjacent to each other form a second set to form a knuckle on the same weft on the back surface side.   
     
     
         2 . The industrial two-layered fabric according to  claim 1 , wherein the one of the binding warps constituting the second pair of the warps forms a plurality of knuckles on the fabric on the front surface side five times in a consecutive manner, and the other of the binding warps forms a plurality of knuckles on the fabric on the front surface side four times in a consecutive manner in a weave repeat. 
     
     
         3 . The industrial two-layered fabric according to  claim 1 , wherein eighteen wefts on the front surface side are arranged side by side in a weave repeat. 
     
     
         4 . The industrial two-layered fabric according to  claim 3 , wherein
 the warp on the back surface side forms four knuckles with respect to the weft on the back surface side in the weave repeat, and   the second pair of the warps forms four knuckles with respect to the weft on the back surface side in the weave repeat.   
     
     
         5 . The industrial two-layered fabric according to  claim 2 , wherein eighteen wefts on the front surface side are arranged side by side in a weave repeat. 
     
     
         6 . The industrial two-layered fabric according to  claim 5 , wherein
 the warp on the back surface side forms four knuckles with respect to the weft on the back surface side in the weave repeat, and   the second pair of the warps forms four knuckles with respect to the weft on the back surface side in the weave repeat.