Woven structured fabric

Abstract

A woven fabric for use in a machine to produce a fiber web, preferably a tissue web. The woven fabric has a machine direction and a transverse direction, as well as a paper side and a machine side. The paper side is formed of warp yarns and weft yarns, which are interwoven with one another in a weave pattern. The paper side has a plurality of twill lines, wherein each twill line is formed by a plurality of adjacent warp yarn floats. The twill lines are completely or substantially formed by warp yarns floating across seven successive weft yarns and adjacent warp yarn floats overlapping over a length of four weft yarns.

1 . A woven fabric for use in a machine to produce a fiber web, the woven fabric comprising: 
 a machine direction, a transverse direction, a paper side and a machine side, wherein said paper side is formed of warp yarns and weft yarns, which are interwoven with one another in a weave pattern, and wherein said paper side has a plurality of twill lines, wherein each of said twill lines is formed by a plurality of adjacent warp yarn floats, wherein said twill lines are completely or substantially formed by said warp yarns floating across seven successive said weft yarns and said adjacent warp yarn floats overlapping over a length of four of said weft yarns.   
     
     
         2 . The woven fabric according to  claim 1 , wherein said warp yarns float across seven successive said weft yarns and with each two said adjacent warp yarn floats overlapping over a length of four said weft yarns, thereby forming straight, parallel twill lines. 
     
     
         3 . The woven fabric according to  claim 1 , wherein said twill lines are formed only across a certain interval length of said weft yarns by said warp yarns floating across seven successive said weft yarns and each two said adjacent warp yarn floats overlapping over a length of four said weft yarns, while turning points are provided at interval ends, at which said weave pattern is interrupted. 
     
     
         4 . The woven fabric according to  claim 3 , wherein an interval length between said turning points is more than 15 said weft yarns. 
     
     
         5 . The woven fabric according to  claim 3 , wherein said twill lines follow a zigzag or wave shape. 
     
     
         6 . The woven fabric according to  claim 3 , wherein an interval length between said turning points is more than 20 said weft yarns. 
     
     
         7 . The woven fabric according to  claim 1 , wherein the fiber web is a tissue web.