Weavexx Corporation

Huyck Licensco Inc.

Huyck Corporation

Robert G Wilson

Kevin John Ward

Brian Herbert Pike Troughton

Ednaldo Vilar Barreto

A papermaker's fabric includes a base fabric structure including machine direction yarns and primary cross machine direction yarns interlacing to form a papermaking surface, wherein the machine direction yarns and primary cross machine direction yarns are interlaced in a pattern having a harness repeat of greater than two. The fabric also includes first and second companion cross machine direction yarns positioned between each pair of adjacent primary cross machine direction yarns. Each first companion cross machine direction yarn has an interlacing pattern relative to the machine direction yarns that is identical to a first of the pair of adjacent primary cross machine direction yarns, and each second companion cross machine direction yarn has an interlacing pattern relative to the machine direction yarns that is identical to a second of the pair of adjacent primary cross machine direction yarns. The first companion cross machine direction yarn is positioned between the second primary and companion cross machine direction yarns. The primary cross machine direction yarns have a first diameter, and the first and second companion yarns have a second diameter, wherein the ratio between the first and second diameters is between about 0.9 and 1.1.

Papermaker's forming fabric with companion yarns

Auto-joinable triple layer papermaker's forming fabrics which exhibit relatively low caliper values, good mechanical stability, and relatively high permeability. In one embodiment of the present invention, triple layer papermaker's forming fabrics having both top and bottom sets of machine direction and cross machine direction yarns are provided in which each yarn in the set of bottom machine directions yarns alternatively pairs with the two yarns in the set of bottom machine direction yarns that are woven immediately adjacent to it.

Auto-joinable triple layer papermaker's forming fabric

A multilayer papermaker's fabric includes: a first set of machine direction yarns; a top set of cross machine direction yarns interwoven with the first set of machine direction yarns; and a bottom set of cross machine direction yarns interwoven with the first set of machine direction yarns. The first set of machine direction yarns, the top set of cross machine direction yarns, and the bottom set of cross machine direction yarns are interwoven in a repeat pattern in which each of the machine direction yarns passes below at least two nonadjacent bottom cross machine direction yarns, in which each adjacent pair of machine direction yarns passes below a common bottom cross machine direction yarn to form side-by side bottom knuckles, and in which machine direction yarns adjacent to and sandwiching the adjacent pair of machine direction yarns forming the side-by-side bottom knuckles pass over a top cross machine direction yarn positioned substantially directly above the bottom cross machine direction yarn under which the bottom knuckles are formed such that a phantom float is formed on that top cross machine direction yarn.

Papermaker's forming fabric

A forming fabric has machine direction yarns and cross machine direction yarns interwoven in a repeating pattern of multiple repeating units. The repeating units of the pattern comprise: paper side cross-machine direction yarns forming the paper side of the fabric; machine side cross-machine direction yarns forming the machine side of the fabric; and machine direction yarns interwoven with both the paper side cross machine direction yarns and the machine side cross machine direction yarns. The machine direction yarns comprise first and second sets of machine direction yarns arranged in an alternating pattern. Each of the machine direction yarns of the first and second sets passes above four paper side cross machine direction yarns to form paper side knuckles separated from one another by at least two paper side cross machine direction yarns. Each of the machine direction yarns of the first set passes below four machine side cross machine direction yarns to form first, second, third and fourth machine side knuckles, and each of said machine direction yarns of said second set passes below three machine side cross machine direction yarns to form fifth, sixth and seventh paper side knuckles. In this configuration, the fabric retains a desired 'zig-zag' configuration on the machine side, but is less prone to twinning.

Double layer papermaker's forming fabric with reduced twinning.

A process for forming paper using a papermaker's forming fabric comprising a fabric layer including cross machine direction fabric yarns and machine direction fabric yarns interwoven to form a papermaking surface with alternating single knuckles thereon. First additional cross machine direction yarns are positioned between adjacent cross machine direction fabric yarns on the papermaking surface of the fabric layer. Second additional cross machine direction yarns are positioned between the cross machine direction fabric yarns on the papermaking surface of the fabric layer. Each of the first and second additional cross machine direction yarns serve as fiber supporting yarns and as locator yarns for another of the first and second additional cross machine direction yarns. Each of the first and second additional cross machine direction yarns are interwoven with the fabric layer. Paper stock is deposited on the fabric to form a wet paper web, and moisture is removed from the wet paper web to form paper.

Process for forming paper using a papermaker's forming fabric

Paper forming progess

A papermaker's fabric includes a base fabric structure that includes MD yarns and primary CMD yarns interlaced to form a papermaking surface. The papermaker's fabric further includes first and second auxiliary CMD yarns positioned between each pair of adjacent primary CMD yarns. Each first auxiliary CMD yarn has an interlacing pattern relative to the MD yarns that is identical to a first of the pair of adjacent primary CMD yarns, and each second auxiliary CMD yarn has an interlacing pattern relative to the MD yarns that is identical to a second of the pair of adjacent primary CMD yarns. The first auxiliary CMD yarn is positioned between the second primary and auxiliary CMD yarns.

Papermaker's fabric with auxiliary yarns

Papermaker's fabric with additional first and second locator and fiber

A process for forming paper using papermaker's forming fabric comprising a fabric layer including cross machine direction fabric yarns and machine direction fabric yarns interwoven to form a papermaking surface with alternating single knuckles thereon. First additional cross machine direction yarns are positioned between adjacent cross machine direction fabric yarns on the papermaking surface of the fabric layer. Second additional cross machine direction yarns are positioned between the cross machine direction fabric yarns on the papermaking surface of the fabric layer. Each of the first and second additional cross machine direction yarns serve as fiber supporting yarns and as locator yarns for another of the first and second additional cross machine direction yarns. Each of the first and second additional cross machine direction yarns are interwoven with the fabric layer to float over odd numbers of adjacent fabric layer machine direction yarns. The process includes depositing paper stock on the fabric to form a wet paper web, and removing moisture from the wet paper web to form the paper.

Process for producing paper using papermakers forming fabric

The forming fabric has a top machine side and an opposing bottom paper side and comprises machine direction (MD) yarns and cross machine direction (CMD) yarns interwoven in a repeating pattern of multiple repeating units. The repeating unit of the pattern comprises: paper side CMD yarns forming the paper side of the fabric; half as many machine side CMD yarns forming the machine side of the fabric; and MD yarns interwoven with both the paper side CMD yarns and the machine side CMD yarns. Within the repeating unit, each of the MD yarns passes beneath at least two paper side CMD yarns to form first and second paper side knuckles. Each of the MD yarns also passes above two machine side CMD yarns to form first and second machine side knuckles, which are separated from one another by at least two machine side CMD yarns. The machine side CMD yarn positioned beneath the first knuckle is also passed over by another MD yarn thus forming a third knuckle, separated from the first knuckle in a first direction by between one and three MD yarns. The machine side CMD yarn positioned beneath the second knuckle is also passed over by another MD yarn thus forming a fourth knuckle, separated from the second knuckle in a second direction opposite the first direction by between one and three MD yarns. In this configuration, the fabric retains the 'zig-zag' configuration on the machine side of prior art fabric, but is less prone to twinning.

Papermaker's double layer forming fabric

A papermaker's forming fabric comprising a fabric layer including cross machine direction fabric yarns and machine direction fabric yarns interwoven to form a papermaking surface with alternating single knuckles thereon. First additional cross machine direction yarns are positioned between adjacent cross machine direction fabric yarns on the papermaking surface of the fabric layer. Second additional cross machine direction yarns are positioned between the cross machine direction fabric yarns on the papermaking surface of the fabric layer. Each of the first and second additional cross machine direction yarns serve as paper stock fiber supporting yarns and as locator yarns for another of the first and second additional cross machine direction yarns. Each of the first and second additional cross machine direction yarns are interwoven with the fabric layer to float over odd numbers of adjacent fabric layer machine direction yarns.

Papermakers' forming fabric having additional fiber support yarns

A papermaker's forming fabric comprising a fabric layer including cross machine direction fabric yarns and machine direction fabric yarns interwoven to form a papermaking surface with alternating single knuckles thereon and to define top, bottom, left, and right saddles between adjacent ones of the cross machine direction fabric yarns. According to one embodiment of the invention, first and second additional cross machine direction yarns are interwoven with the base fabric between adjacent cross machine direction fabric yarns and positioned oppositely in top and bottom saddles. According to another embodiment, single additional cross machine direction fabric yarns are interwoven with the base fabric between adjacent ones of the cross machine direction fabric yarns. The single additional cross machine direction yarns are positioned successively and repeatedly in right, top, left, and then top saddle positions.

Papermaker's fabric with additional cross machine direction yarns

A papermaker's forming fabric comprising a fabric layer including cross machine direction fabric yarns and machine direction fabric yarns interwoven to form a papermaking surface with alternating single knuckles thereon. First additional cross machine direction yarns are positioned between adjacent cross machine direction fabric yarns on the papermaking surface of the fabric layer. Second additional cross machine direction yarns are positioned between the cross machine direction fabric yarns on the papermaking surface of the fabric layer. Each of the first and second additional cross machine direction yarns serve as fiber supporting yarns and as locator yarns for another of the first and second additional cross machine direction yarns. Each of the first and second additional cross machine direction yarns are interwoven with the fabric layer.

Papermaker's forming fabric with additional cross machine direction

A papermakers' fabric, especially a forming fabric, with very high fiber support and open area on its top surface to enhance the papermaking characteristics. The papermaking surface consists of a woven fabric layer with single float machine direction yarn knuckles; i.e., no machine direction yarn passes over two or more adjacent top surface cross machine direction yarns. To complete the papermaking surface, into this base structure is woven two additional, generally smaller diameter, cross machine direction yarns for every cross machine direction yarn in the base weave papermaking surface. These two additional cross machine direction yarn pairs are woven in reverse weave patterns to one another such that natural interposing forces cause the two yarns to align one over the other centrally between two adjacent cross machine direction yarns of the fabric layer. One yarn of the interposing pair functions as an additional fiber supporting yarn while the other yarn acts as a locator yarn to position the fiber supporting yarn in the proper or ideal location on the papermaking surface.

Growing community of inventors

Wake Forest, NC, United States of America

Robert G Wilson