Patent ID: 7584768

Claim:
A woven belt for a machine for producing a web of fibrous material, said woven belt comprising: at least two woven layers including a first woven layer and a second woven layer, each of said at least two woven layers including a plurality of warp threads extending in a belt longitudinal direction and a plurality of weft threads extending in a belt transverse direction, said first woven layer forming a web contact side, said second woven layer forming a machine contact side, said plurality of warp threads including a plurality of tie warp threads and a plurality of structure-forming warp threads, said first and second woven layers joining together by said plurality of tie warp threads, said first woven layer being woven with at least 26 different warp thread runs, said plurality of structure-forming warp threads being woven into said first woven layer, said plurality of weft threads of said first woven layer having a maximum floating length of 3 relative to each other, wherein one of: (1) said plurality of tie warp threads includes a plurality of structure-forming tie warp thread pairs such that where a tie warp thread of a respective said structure-forming tie warp thread pair is integrated into said first woven layer an other tie warp thread of said structure-forming tie warp thread pair is integrated into an other woven layer of said at least two woven layers, and said tie warp threads of said plurality of structure-forming tie warp thread pairs cross each other so as to switch between said first woven layer and said other woven layer of said at least two woven layers and form a plurality of changeover points which are distributed irregularly within a warp/weft repeat, and (2) said plurality of tie warp threads are integrated into said first woven layer with no structure-forming effect and tie onto a plurality of tie-on points over said plurality of weft threads of said first woven layer, and said plurality of tie-on points are distributed irregularly within said warp/weft repeat.