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US 4,909,284 AGranted
Double layered papermaker's fabric
AssigneeAlbany International Corp.
InventorRobert H. Kositzke
Life of this patent
Estimating the term…
Abstract
A papermaker's forming fabric has a repeating pattern of weft and weft support yarns on the paper-forming side, which are secured in position by multi-pattern interlacing with the warp yarns. The fabric has advantages, when used in a forming wire belt, of light weight, dimensional and running stability and long operating life. By varying the diameters of the weft yarns one can optimize fiber support on the sheet supporting surface and abrasion resistance on the wear surface.
Claims17
A papermachine clothing multi-layered fabric, which comprises:
- an upper, face layer made up of a plurality of parallel and alternating first weft yarns and weft support yarns;
- a lower layer of a plurality of second weft yarns running parallel to the first weft yarns of the upper layer, said lower layer defining with said upper, face layer an interior for said fabric;
- and
- a plurality of warp yarns running in a direction transverse to the first and second weft yarns and interwoven with the lower layer second weft yarns, the upper layer first weft yarns and the weft support yarns, said plurality of warp yarns belonging to a single system running in said direction transverse to said first weft yarns and said second weft yarns, each said warp yarn so interweaving in a repeating weave pattern, wherein each said warp yarn emerges from said interior of said fabric onto said upper, face layer by crimping over one of said weft support yarns, passes over a first weft yarn on said upper, face layer, and re-enters said interior of said fabric by crimping over the next one of said weft support yarns twice in each said weave pattern while interweaving with said lower layer second weft yarns once in each said weave pattern.
1 more element
A papermachine clothing multi-layered fabric, which comprises:
- an upper, face layer made up of a plurality of parallel and alternating first weft yarns and weft support yarns;
- a lower layer of a plurality of second weft yarns running parallel to the first weft yarns of the upper layer;
- and
- a plurality of warp yarns running in a direction transverse to the first and second weft yarns and interwoven with the lower layer second weft yarns, the upper layer first weft yarns and the weft support yarns,
- wherein each of said yarns is a monofilament having an average diameter within the range of from 0.10 to 0.50 mm, and wherein said second weft yarns have a diameter greater than the diameter of said first weft yarns and said first weft yarns have a diameter greater than the diameter of said weft support yarns.
2 more elements
A papermachine clothing multi-layered fabric, which comprises:
- an upper, face layer made up of a plurality of parallel and alternating first weft yarns and weft support yarns;
- a lower layer of a plurality of second weft yarns running parallel to the first weft yarns of the upper layer;
- and
- a plurality of warp yarns running in a direction transverse to the first and second weft yarns and interwoven with the lower layer second weft yarns, the upper layer first weft yarns and the weft support yarns in a repeating weave pattern,
- wherein said weave pattern includes warp yarn interlacings evenly distributed on the first weft yarns according to a pattern of 1.times.3.times.1.times.3 and warp yarn interlacings evenly distributed on the weft support yarns according to the pattern 2.times.2.times.2.times.2.
2 more elements
A papermachine clothing multi-layered fabric, which comprises:
- an upper, face layer made up of a plurality of parallel and alternating first weft yarns and weft support yarns;
- a lower layer of a plurality of second weft yarns running parallel to the first weft yarns of the upper layer, said lower layer defining with said upper, face layer an interior for said fabric;
- and
- a plurality of warp yarns running in a direction transverse to the first and second weft yarns and interwoven with the lower layer second weft yarns, the upper layer first weft yarns and the weft support yarns, each said warp yarn so interweaving in a repeating weave pattern, wherein each said warp yarn emerges from said interior of said fabric onto said upper, face layer by crimping over one of said weft support yarns and re-enters said interior of said fabric by crimping over the next one of said weft support yarns twice in each said weave pattern while interweaving with said lower layer second weft yarns once in each said weave pattern,
- wherein each of said yarns is a monofilament having an average diameter within the range of from 0.10 to 0.05 mm, and wherein said second weft yarns have a diameter greater than the diameter of said first weft yarns and said first weft yarns have a diameter greater than the diameter of said weft support yarns.
2 more elements
A papermachine clothing multi-layered fabric, which comprises:
- an upper, face layer made up of a plurality of parallel and alternating first weft yarns and weft support yarns;
- a lower layer of a plurality of second weft yarns running parallel to the first weft yarns of the upper layer, said lower layer defining with said upper, face layer an interior for said fabric;
- and
- a plurality of warp yarns running in a direction transverse to the first and second weft yarns and interwoven with the lower layer second weft yarns, the upper layer first weft yarns and the weft support yarns, each said warp yarn so interweaving in a repeating weave pattern, wherein each said warp yarn emerges from said interior of said fabric onto said upper, face layer by crimping over one of said weft support yarns and re-enters said interior of said fabric by crimping over the next one of said weft support yarns twice in each said weave pattern while interweaving with said lower layer second weft yarns once in each said weave pattern,
- wherein said weave pattern includes warp yarn interlacings evenly distributed on the first weft yarns according to a pattern of 1.times.3.times.1.times.3 and warp yarn interlacings evenly distributed on the weft support yarns according to the pattern of 2.times.2.times.2.times.2.
2 more elements
Dependencies are inferred from the claim text.