Seamed papermaker's fabrics
AssigneeAlbany International Corp.
InventorsSteven S. Yook, Phillip R. Elkins
Life of this patent
Estimating the term…
Abstract
An on-machine-seamable papermaker's fabric includes a base fabric having seaming loops at its widthwise edges for joining the papermaker's fabric into endless form on a paper machine. The seam formed when the seaming loops are interdigitated and joined to one another with a pintle is covered with a strip of flow-resistant material, or, where the base fabric is a laminated structure having a top layer and a bottom layer, strips of flow-resistant material are placed between the top and bottom layers adjacent to the seam. The flow-resistant material provides the seam region with permeabilities to air and water substantially identical to those of the rest of the papermaker's fabric. At least one layer of staple fiber batt is entangled through the base fabric and flow-resistant material.
Claims16
An on-machine-seamable papermaker's fabric comprising:
- a base fabric, said base fabric having a system of longitudinal yarns and a system of transverse yarns, said longitudinal yarns being substantially in the machine direction of said base fabric and said transverse yarns being substantially in the cross-machine direction of said base fabric, said yarns of said system of longitudinal yarns being interwoven with said yarns of said system of transverse yarns to form said base fabric in a rectangular shape with a length, a width, two lengthwise edges and two widthwise edges, said longitudinal yarns forming seaming loops along each of said two widthwise edges, said seaming loops being interdigitated and joined together with a pintle to form a seam;
- a strip of flow-resistant material over said seam and attached thereto, said flow-resistant material providing said seam with permeabilities to air and water substantially identical to those of the rest of said papermaker's fabric;
- and
- at least one layer of staple fiber batt entangled through said base fabric.
An on-machine-seamable papermaker's fabric comprising:
- a base fabric, said base fabric having a rectangular shape with a length, a width, two lengthwise edges, and two widthwise edges, said base fabric having a system of longitudinal yarns and a system of transverse yarns, said longitudinal yarns being substantially in the machine direction of said base fabric and said transverse yarns being substantially in the cross-machine direction of said base fabric, said base fabric having a top layer and a bottom layer joined to one another only at said two widthwise edges by said longitudinal yarns, said longitudinal yarns forming seaming loops along each of said two widthwise edges, said seaming loops being interdigitated and joined together with a pintle to form a seam;
- a strip of flow-resistant material between said top layer and said bottom layer on at least one side of said seam, said flow-resistant material providing said seam with permeabilities to air and water substantially identical to that of the rest of said press fabric;
- and
- at least one layer of staple fiber batt entangled through said base fabric and joining said top layer to said bottom layer.
Dependencies are inferred from the claim text.