Patent ID: 8758570

Claim:
A triple papermaking fabric ( 100 ), having at least one fabric repeat unit ( 104 ) and comprising: a set of warp machine direction (MD) top yarns ( 1 - 8 ); a set of weft cross machine direction (CMD) top yarns ( 34 , 38 , 42 ) interwoven with the top MD yarns to form a top fabric layer ( 101 ); a set of bottom MD yarns ( 9 - 16 ); a set of bottom CMD yarns ( 33 , 37 , 41 ) interwoven with the bottom MD yarns to form a bottom fabric layer ( 102 ); a set of binding yarns ( 35 , 36 ; 39 , 40 ) arranged in the cross machine direction and interwoven with the top MD yarns and that bind the top layer ( 101 ) to the bottom layer ( 102 ); wherein the set of binding yarns ( 35 , 36 ; 39 , 40 ) are arranged in pairs; further wherein with respect to yarns in the repeat unit ( 104 ): at least one binding yarn ( 35 , 36 ; 39 , 40 ) of each pair is interwoven with at least one bottom MD yarn ( 9 - 16 ); each binding yarn ( 35 , 36 ; 39 , 40 ) binds only one bottom MD yarn ( 9 - 16 ); binding yarns ( 35 , 36 ; 39 , 40 ) of each pair are interwoven with respective groups of different top MD yarns ( 1 - 8 ); the top CMD yarns ( 34 , 38 , 42 ) are interwoven only with the top MD yarns ( 1 - 8 ) and do not interweave with the bottom MD yarns ( 9 - 16 ); and the bottom CMD yarns ( 33 , 37 , 41 ) are interwoven only with the bottom MD yarns ( 9 - 16 ) and do not interweave with the top MD yarns ( 1 - 8 ); the number of top CMD yarns ( 34 , 38 , 42 ) and bottom CMD yarns ( 33 , 37 , 41 ) are identical; each bottom CMD yarn ( 33 , 37 , 41 ) passes over two adjacent bottom MD yarns ( 9 - 16 ) and under all the remaining bottom MD yarns ( 9 - 16 ); the top MD yarns ( 1 - 8 ), the top CMD yarns ( 34 , 38 , 42 ) and the binding yarns ( 35 , 36 ; 39 , 40 ) as a whole form a plain weave pattern on a top surface of the triple papermaking fabric ( 100 ).