CA2558427A1 - Papermaker's triple layer forming fabric with non-uniform top cmd floats - Google Patents

Papermaker's triple layer forming fabric with non-uniform top cmd floats Download PDF

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Publication number
CA2558427A1
CA2558427A1 CA002558427A CA2558427A CA2558427A1 CA 2558427 A1 CA2558427 A1 CA 2558427A1 CA 002558427 A CA002558427 A CA 002558427A CA 2558427 A CA2558427 A CA 2558427A CA 2558427 A1 CA2558427 A1 CA 2558427A1
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CA
Canada
Prior art keywords
machine direction
yarns
direction yarns
yarn
papermaker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002558427A
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French (fr)
Other versions
CA2558427C (en
Inventor
Christine Barratte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weavexx LLC
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2558427A1 publication Critical patent/CA2558427A1/en
Application granted granted Critical
Publication of CA2558427C publication Critical patent/CA2558427C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0036—Multi-layer screen-cloths
    • D21F1/0045—Triple layer fabrics
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/902—Woven fabric for papermaking drier section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/903—Paper forming member, e.g. fourdrinier, sheet forming member

Abstract

The present invention is directed to papermaker's forming fabrics that can provide an adequate papermaking surface for certain grades of paper (such as tissue paper) with increased wear characteristics. Such fabrics include: sets of top machine direction (MD) and cross machine direction (CMD) yarns, the latter interwoven with the top MD yarns to form a top fabric layer; a similar corresponding bottom fabric layer;
and stitching yarns interwoven with the fabric layers. The yarns are interwoven as a series of repeat units wherein each top CMD yarn forms multiple paper side floats, and at least a first of said floats passes over a first number of top MD
yarns, and at least a second of said floats passes over a second number of top MD yarns differing from the first number by one. Upper portions of the CMD stitching yarns follow the same sequence as the top CMD yarns.

Claims (26)

1. A triple layer papermaker's fabric, comprising:
a set of top machine direction yarns;
a set of top cross machine direction yarns interwoven with the top machine direction yarns to form a top fabric layer;
a set of bottom machine direction yarns;
a set of bottom cross machine direction yarns interwoven with the bottom machine direction yarns to form a bottom fabric layer;
a plurality of stitching yarns interwoven with the top and bottom fabric layers;
the top machine direction yarns, top cross machine direction yarns, bottom machine direction yarns, bottom cross machine direction yarns, and stitching yarns being interwoven as a series of repeat units, wherein in each of the repeat units, each top cross machine direction yarn forms multiple paper side floats by passing over some of the top machine direction yarns and interweaving beneath a top machine direction yarn on each side of the float, and wherein at least a first of the paper side floats passes over a first number of top machine direction yarns, and at least a second of the paper side floats passes over a second number of top machine direction yarns, and the difference between the first number and the second number is one.
2. The papermaker's triple layer fabric defined in Claim 1, wherein the set of top machine direction yarns comprises ten top machine direction yarns.
3. The papermaker's triple layer fabric defined in Claim 2, wherein each top cross machine direction yarn forms two floats that pass over two top machine direction yarns and a third float that passes over three top machine direction yarns.
4. The papermaker's triple layer fabric defined in Claim 2, wherein each top cross machine direction yarn forms two floats that pass over two top machine direction yarns and two floats that pass over one top machine direction yarn.
5. The papermaker's triple layer fabric defined in Claim 1, wherein the set of top machine direction yarns comprises twelve top machine direction yarns.
6. The papermaker's triple layer fabric defined in Claim 5, wherein each top cross machine direction yarn forms two floats that pass over two top machine direction yarns and three floats that pass over one top machine direction yarn.
7. The papermaker's triple layer fabric defined in Claim 1, wherein the set of top machine direction yarns comprises eight top machine direction yarns.
8. The papermaker's triple layer fabric defined in Claim 7, wherein each top cross machine direction yarn forms two floats that pass over two top machine direction yarns and a third float that passes over one top machine direction yarn.
9. The papermaker's triple layer fabric defined in Claim 1, wherein a pair of first and second stitching yarns is positioned between adjacent pairs of top cross machine direction yarns, the first and second stitching yarns of each pair being interwoven with the top and bottom machine direction yarns such that, as an upper portion of the first stitching yarn is interweaving with the top machine direction yarns, a binding portion of the second stitching yarn is positioned below the top machine direction yarns, and such that as an upper support portion of the second stitching yarn is interweaving with the top machine direction yarns, a binding portion of the first stitching yarn is positioned below the top machine direction yarns, and such that the first and second stitching yarns cross each other as they pass below a transitional top machine direction yarn, and such that at least one of the binding portions of the first and second stitching yarns passes below at least one of the bottom machine direction yarns.
10. The papermaker's triple layer defined in Claim 10, wherein a pair of first and second stitching yarn pairs is positioned between each adjacent pair of top machine direction yarns.
11. The papermaker's triple layer fabric defined in Claim 10, wherein the upper portions of the first and second stitching yarns form paper side floats over the top machine direction yarns in the same serial order as top cross machine direction yarns such that they integrate with the weave pattern of the top layer.
12. The papermaker's triple layer fabric defined in Claim 11, wherein each float of a top CMD yarn of the first length is offset from a float of a stitching yarn of the first length by one top MD yarn.
13. The papermaker's triple layer fabric defined in Claim 1, wherein each bottom cross machine direction yarn passes above two adjacent bottom machine direction yarns and passes below the remaining bottom machine direction yarns to form a machine side float.
14. A triple layer papermaker's fabric, comprising:
a set of top machine direction yarns;
a set of top cross machine direction yarns interwoven with the top machine direction yarns to form a top fabric layer;
a set of bottom machine direction yarns;
a set of bottom cross machine direction yarns interwoven with the bottom machine direction yarns to form a bottom fabric layer;
a plurality of stitching yarn pairs interwoven with the top and bottom fabric layers;
the top machine direction yarns, top cross machine direction yarns, bottom machine direction yarns, bottom cross machine direction yarns, and stitching yarns being interwoven as a series of repeat units, wherein in each of the repeat units, each top cross machine direction yarn passes forms multiple paper side floats by passing over some of the top machine direction yarns and interweaving beneath a top machine direction yarn on each side of the float, the floats being non-uniform for each top cross machine direction yarn, and each stitching yarn pair forms a cross machine direction yarn unit having multiple paper side floats by passing over some of the top machine direction yarns and interweaving beneath a top machine direction yarn on each side of each float, the floats being non-uniform for each cross machine direction yarn unit.
15. The papermaker's triple layer fabric defined in Claim 14, wherein each of the top cross machine direction yarns and each of the top cross machine direction yarn units follows the same weave pattern in forming non-uniform floats.
16. The papermaker's triple layer fabric defined in Claim 15, wherein each top cross machine direction yarn and each cross machine direction yarn unit is offset from its adjacent top cross machine direction yarn or cross machine direction yarn unit by one top machine direction yarn.
17. The papermaker's triple layer fabric defined in Claim 14, wherein the fabric includes ten top machine direction yarns and ten bottom machine direction yarns.
18. The papermaker's triple layer fabric defined in Claim 17, wherein each top cross machine direction yarn forms two floats that pass over two top machine direction yarns and a third float that passes over three top machine direction yarns.
19. The papermaker's triple layer fabric defined in Claim 17, wherein each top cross machine direction yarn forms two floats that pass over two top machine direction yarns and two floats that pass over one top machine direction yarn.
20. The papermaker's triple layer fabric defined in Claim 14, wherein the set of top machine direction yarns comprises twelve top machine direction yarns.
21. The papermaker's triple layer fabric defined in Claim 20, wherein each top cross machine direction yarn forms two floats that pass over two top machine direction yarns and three floats that pass over one top machine direction yarn.
22. The papermaker's triple layer fabric defined in Claim 14, wherein the set of top machine direction yarns comprises eight top machine direction yarns.
23. The papermaker's triple layer fabric defined in Claim 22 wherein each top cross machine direction yarn forms two floats that pass over two top machine direction yarns and a third float that passes over one top machine direction yarn.
24. The papermaker's triple layer fabric defined in Claim 14, wherein each float of a top CMD yarn of a first length is offset from a float of a stitching yarn of the first length by one top MD yarn.
25. A method of making paper, comprising the steps of:
(a) providing a triple layer papermaker's forming fabric, the fabric comprising:
a set of top machine direction yarns;
a set of top cross machine direction yarns interwoven with the top machine direction yarns to form a top fabric layer;
a set of bottom machine direction yarns;
a set of bottom cross machine direction yarns interwoven with the bottom machine direction yarns to form a bottom fabric layer;
a plurality of stitching yarns interwoven with the top and bottom fabric layers;
the top machine direction yarns, top cros machine direction yarns, bottom machine direction yarns, bottom cross machine direction yarns, and stitching yarns being interwoven as a series of repeat units, wherein in each of the repeat units, each top cross machine direction yarn passes forms multiple paper side floats by passing over some of the top machine direction yarns and interweaving beneath a top machine direction yarn on each side of the float, and wherein at least a first of the paper side floats passes over a first number of top machine direction yarns, and at least a second of the paper side floats passes over a second number of top machine direction yarns, and the difference between the first number and the second number is one.
(b) applying paper stock to the fabric; and (c) removing moisture from the paper stock to form paper.
26. The method defined in Claim 24, wherein the paper stock is selected and applied such that the paper formed is tissue paper.
CA2558427A 2005-09-22 2006-09-01 Papermaker's triple layer forming fabric with non-uniform top cmd floats Active CA2558427C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US71967505P 2005-09-22 2005-09-22
US60/719,675 2005-09-22

Publications (2)

Publication Number Publication Date
CA2558427A1 true CA2558427A1 (en) 2007-03-22
CA2558427C CA2558427C (en) 2012-01-03

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CA2558427A Active CA2558427C (en) 2005-09-22 2006-09-01 Papermaker's triple layer forming fabric with non-uniform top cmd floats

Country Status (11)

Country Link
US (1) US7484538B2 (en)
EP (1) EP1767691B1 (en)
JP (1) JP4602955B2 (en)
KR (1) KR100865773B1 (en)
CN (1) CN1982535A (en)
AR (1) AR057825A1 (en)
AT (1) ATE532898T1 (en)
AU (1) AU2006220386B2 (en)
BR (1) BRPI0603942A (en)
CA (1) CA2558427C (en)
MX (1) MXPA06010799A (en)

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EP1767691B1 (en) 2011-11-09
JP4602955B2 (en) 2010-12-22
US20070062598A1 (en) 2007-03-22
BRPI0603942A (en) 2007-08-14
EP1767691A2 (en) 2007-03-28
US7484538B2 (en) 2009-02-03
ATE532898T1 (en) 2011-11-15
AR057825A1 (en) 2007-12-19
MXPA06010799A (en) 2007-03-30
CN1982535A (en) 2007-06-20
JP2007084994A (en) 2007-04-05
KR20070033928A (en) 2007-03-27
EP1767691A3 (en) 2007-07-04
AU2006220386A1 (en) 2007-04-05
KR100865773B1 (en) 2008-10-28
AU2006220386B2 (en) 2009-06-11
CA2558427C (en) 2012-01-03

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