Woven structured fabric with crossing twill lines
AssigneeVoith Patent GmbH
InventorScott D. Quigley
Life of this patent
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Abstract
A woven fabric for use in a machine to produce a fiber web, such as a tissue fiber web, has a paper side formed by interwoven warp yarns and weft yarns. The paper side has a plurality of twill lines formed by neighboring flotations of warp yarns. The twill lines have an MD vector component in a machine direction and a CD vector component in a cross machine direction. At least some twill lines are diagonal, with a CD vector component being unequal to zero. The diagonal twill lines include first diagonal twill lines with CD vector components that have an opposite sign to the CD vector components of second diagonal twill lines. A sum of all CD vector components of the first diagonal twill lines is substantially balanced with a sum of all CD vector components of the second diagonal twill lines.
Claims14
A woven fabric for use in a machine for producing a fiber web, the woven fabric, the woven fabric comprising:
- a multiplicity of mutually interwoven warp yarns and weft yarns forming a paper side of the woven fabric;
- said paper side having a plurality of twill lines each being formed by a plurality of neighboring flotations of said warp yarns;
- said twill lines having an MD vector component directed in a machine direction (MD) of the woven fabric and a CD vector component directed in a cross machine direction (CD) of the woven fabric;
- at least some of said twill lines being diagonal twill lines having a CD vector component that is unequal to zero;
- a plurality of said diagonal twill lines consisting of first diagonal twill lines and second diagonal twill lines, wherein the CD vector components of the first diagonal twill lines have an opposite sign to the CD vector components of the second diagonal twill lines;
- a sum of all CD vector components of said first diagonal twill lines being substantially balanced with a sum of all CD vector components of said second diagonal twill lines;
- said weft yarns that are located in a middle of any one of said flotations that define said diagonal twill lines having a cross section which is smaller than a cross sections of the remaining said weft yarns that are not located in the middle of any one of said flotations that define said diagonal twill lines.
Dependencies are inferred from the claim text.