US 2007/0181207 A1 · Dryer fabric seam

Abstract

An industrial fabric is described which comprises a woven fabric body having opposing ends. The fabric repeating weave pattern includes at least two systems of vertically stacked machine direction warp yarns interwoven with at least one system of cross machine direction weft yarns. On each end of the fabric at least some of the warp yarns form a first set of loops each of which is at a first angle to the machine direction, at least some of the warp yarns form a second set of loops each of which is at a second angle to the machine direction and each of the second set of loops is substantially concentric with the first set of angled loops to provide double end loops which can be seamed by using a coil seam or a pin seam. This fabric structure has the advantage that it is possible to use all of the fabric warp yarns in the loops, thus significantly increasing the tensile strength of the seam. It also permits the fabrication of a flatter seam. This seam design is of particular use in dryer fabrics for a paper making machine.

Claims16

Dependent claims

An industrial fabric comprising a woven fabric body having opposing ends, the fabric body having at least two systems of vertically stacked machine direction warp yarns interwoven with at least one system of cross machine direction weft yarns;

on each end of the fabric at least some of the warp yarns form a first set of loops each of which is at a first angle to the machine direction;
at least some of the warp yarns form a second set of loops each of which is at a second angle to the machine direction and each of said second set of loops is substantially concentric with the first set of angled loops to provide double end loops.

A paper makers fabric, for use in the dryer section of a paper making machine, the fabric having a machine side, a paper side, and a machine direction, and having opposite ends each of which ends includes seaming loops, the fabric comprising in combination:

a first set of monofilament warp yarns located in the machine direction,
a second set of mono filament warp yarns located in the machine direction, and
at least one set of monofilament weft yarns located in the cross machine direction, the two sets of warp yarns and the weft yarns being interwoven to a repeating weave pattern in which:
the first set of warp yarns provides exposed floats on the paper side of the fabric,
the second set of warp yarns provides exposed floats on the machine side of the fabric, and
each of the yarns of the first set interweave with one of the weft yarns to form a knuckle between the weft yarn and on of the exposed floats in the second set, each of the yarns of the second set interweave with one of the weft yarns to form a knuckle between the weft yarn and one of the exposed floats in the first set, and the first set of monofilament warp yarns is located in the weave pattern directly above the second set of monofilament warp yarns wherein
a first set of seaming loops comprises the exposed ends of each of the first set of warp yarns bent to form a first set of loops each of which is at a first angle to the machine direction and the remainder of each of the exposed warp yarn ends is rewoven into the next adjacent warp path of one of the warp yarns from the second set of warp yarns and in correlation with the weave pattern of that next adjacent warp path;
and a second set of seaming loops comprises the exposed ends of each of the second set of warp yarns bent to form a second set of loops each of which is at a second angle to the machine direction, each of said second set of loops is substantially concentric with the first set of angled loops and the remainder of each of the exposed warp yarn ends is rewoven into the next adjacent warp yarn path from the first set of warp yarns and in correlation with the weave pattern of the fabric.

5 more elements

Dependencies are inferred from the claim text.

Dryer fabric seam

Life of this patent

Dryer fabric seam

Life of this patent

Abstract

Claims16