WO2024107737A1 - Toile de formation avec agencement de trame en escalier en vue de générer une topographie - Google Patents

Toile de formation avec agencement de trame en escalier en vue de générer une topographie Download PDF

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Publication number
WO2024107737A1
WO2024107737A1 PCT/US2023/079655 US2023079655W WO2024107737A1 WO 2024107737 A1 WO2024107737 A1 WO 2024107737A1 US 2023079655 W US2023079655 W US 2023079655W WO 2024107737 A1 WO2024107737 A1 WO 2024107737A1
Authority
WO
WIPO (PCT)
Prior art keywords
wefts
binder
warps
weft
fabric
Prior art date
Application number
PCT/US2023/079655
Other languages
English (en)
Inventor
Chad Martin
Robbie EDMONDS
Rae Patel
Original Assignee
Astenjohnson International, Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Astenjohnson International, Inc. filed Critical Astenjohnson International, Inc.
Publication of WO2024107737A1 publication Critical patent/WO2024107737A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D11/00—Double or multi-ply fabrics not otherwise provided for
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00—Woven fabrics designed to make specified articles
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/43—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with differing diameters
    • 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
    • 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
    • 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
    • D21F7/08—Felts
    • D21F7/083—Multi-layer felts
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/01—Surface features
    • D10B2403/011—Dissimilar front and back faces
    • D10B2403/0114—Dissimilar front and back faces with one or more yarns appearing predominantly on one face, e.g. plated or paralleled yarns
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial

Definitions

  • the invention concerns forming fabrics for use in forming the initial embryonic web in a papermaking process. It is particularly concerned with composite forming fabrics comprised of two independent woven layers interconnected by pairs of binder weft yarns.
  • Forming fabrics which have weave designs having two independent woven layers which are interconnected during weaving by a plurality of binder weft yarns.
  • the binder yarns are woven as pairs such that, while a first pair member forms (or completes) the continuous unbroken weave pattern of the of non-binding weft yarns in the paper side (PS) layer, the second member interlaces with at least one warp yarn from the machine side (MS) layer so as to bind that layer to the PS layer.
  • the pair members then exchange position (being directed during weaving from one layer to the other) so that the second member then continues the PS layer weave pattern so that it is unbroken and continuous while the first interlaces with a second, different warp yarn from the MS layer.
  • Each exchange forms a segment of the continuous unbroken PS weave pattern.
  • Such fabrics are known and have been described in US 5,826,627 (Seabrook et al.) and others.
  • Each binder yarn is said to be “intrinsic” in that it contributes to and is part of the PS surface pattern; additionally, each contributes to the interconnection of the PS and MS layers.
  • Fabrics of this type are known as “SSB” or “sheet support binder” type forming fabrics in the papermaking arts. [0004] While satisfactory in many respects, there is always a desire to improve on what has been done previously.
  • the present invention is directed to an arrangement to increase bulk and topography for the paper sheet being formed.
  • a forming fabric for a papermaking machine woven according to a repeating fabric weave pattern includes a PS layer having a PS surface, with the PS layer including PS warps and first PS wefts, second PS wefts, and binder PS weft pairs interwoven in a repeating pattern, and a MS layer having a MS surface, with the MS layer including interwoven MS warps and MS wefts.
  • the binder PS weft pairs are interwoven with the PS warps and the MS warps to bind the PS and MS layers together in the forming fabric, and each interchanges between the layers.
  • the first PS wefts have a larger diameter than the second PS wefts
  • the second PS wefts have a larger diameter than the binder PS weft pair
  • the first PS wefts, the second PS wefts, and the binder PS wefts are inserted sequentially in each repeat of the repeating pattern, preferably from large to small, forming a stair step topography.
  • the PS warps, the PS wefts, the binder PS yarn pairs, the MS warps, the MS wefts are preferably polymeric yarns made from at least one material selected from PET, PA, PBT, PEN, PPS or PEEK.
  • Fabrics made in accordance with the teachings of the invention will be heatset, processed, seamed, and finished in a manner using techniques and equipment similar to that used with other known SSB type fabrics.
  • Figure 1 is a photograph of the PS of a forming fabric according to the invention.
  • Figure 2 is a photograph of the MS of the forming fabric shown in Figure 1.
  • PS refers to a paper support side of a papermaking fabric.
  • MS refers to a machine side of a papermaking fabric.
  • Warps and wefts refers to yarns that are interwoven together to form a fabric. These terms originate based on the yarn positions in a loom used for weaving the fabric but are used for convenience only in identifying these yarns in a weave pattern, and the resulting woven product is not limited by the actual loom position of the yarns, and “warp” and “weft” merely refer to the orthogonally located yarn systems in the resulting woven fabric.
  • the warps extend in the machine direction (MD) and the wefts extend in the cross direction (GD).
  • the yarns may be monofilaments or multi-filaments.
  • the terms “about” and “approximately” encompass + or - 10% of an indicated value unless otherwise noted.
  • a reference to a list of items that are cited as "at least one of a, b, or c" (where a, b, and c represent the items being listed) means any single one of the items a, b, or c, or combinations thereof.
  • the terminology includes the words specifically noted above, derivatives thereof and words of similar import.
  • Figures 1 and 2 show PS and MS layers 110, 120, respectively, of a SSB forming fabric 100 according to the invention.
  • the PS layer 110 includes PS warps 112 interwoven with PS wefts 114, 116, 118 in a PS repeating pattern.
  • the PS wefts include first PS wefts 114, second PS wefts 116, and binder PS weft pairs 118.
  • the binder PS weft pairs 118 connect the PS layer 110 to the MS layer 120 by weaving under the MS warps 122 of the MS layer at connection points 130 (see Fig. 2) as noted in detail below.
  • the yarns in the binder PS weft pair 118 exchange positions as they interweave with the MS layer so that the path of the binder PS weft pairs 118 on the paper support surface of the PS layer 110 in effect travel along a single yarn path, in a manner known to those of ordinary skill in the art.
  • first PS wefts 114 have a larger diameter than the second PS wefts 116, and the second PS wefts 116 have a larger diameter than the binder PS weft pair 118, and the first PS wefts 114, the second PS wefts 116, and the binder PS wefts 118 are inserted sequentially in a repeating pattern, preferably from large to small, giving a “stair step” topography.
  • This provides a specific topography as based on the weft sizes as well as the specific arrangement in order to increase pocket size (area and volume) and depth.
  • This stair step is characterized by a non- symmetrical appearance due to the drop off between the binder PS weft pair 118 to the first PS weft 114.
  • Rush drag the difference between slice velocity and forming fabric speed
  • This topography can be used to manipulate the surface effect provided by this topography.
  • the PS weft yarns 114, 116, 118 are woven in a 2 over, 1 under, 2 over, 1 under twill pattern with the PS warps112.
  • the binder PS wefts 118 form a single yarn path with this weave pattern.
  • other weave patterns could be provided, such as the weft yarns 114, 116, 118 being woven in a 3 over, 1 under repeat, or various other weave patterns using the stair step spacing.
  • the first PS weft yarns 114 have a diameter of about 0.15 to 0.30 mm, and preferably 0.18 mm
  • the second PS weft yarns 116 have a diameter of about 0.12 to 0.25 mm, and preferably 0.15 mm
  • the PS binder weft yarns 118 have a diameter of about 0.08 to 0.20 mm, and preferably 0.11 mm.
  • the PS warps have a diameter of about 0.08 - 0.25 mm, and preferably 0.11 mm.
  • the MS layer 120 includes MS warps 122 interwoven with MS wefts 124 in a MS repeating pattern.
  • each of the MS warps 122 forms one or more MS warp knuckles 126 over single ones of the MS wefts 124.
  • All of the MS warp knuckles 126 are shown as single warp knuckles and do not extend over more than 1 MS weft 124. However, double warp knuckles could be provided.
  • the MS wefts 124 form MS weft floats 128 over the MS warps 122, with floats over 3 MS warps being shown. However, the float size could vary.
  • the MS warp knuckles 126 are preferably arranged in a twill or broken twill.
  • the connection points 130 are located where the PS weft binder yarns 118 wrap under the MS warps 122.
  • the MS warps 122 and the MS wefts 124 preferably have a diameter in a range from about 0.10 to 0.40 mm.
  • the PS warps 112, the PS wefts 114, 116, 118, the MS warps 122, and the MS wefts 124 are preferably polymeric yarns made from at least one material selected from PET, PA, PBT, PEN, PPS or PEEK.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Paper (AREA)

Abstract

Toile de formation pour une machine à papier tissée selon un motif répétitif. La toile comprend une couche PS possédant une surface PS, la couche PS comprenant des chaînes PS et des premières trames PS, des secondes trames PS, et des paires de trames PS de liage entrelacées dans un premier motif répétitif, et une couche MS possédant une surface MS, la couche MS comprenant des chaînes MS entrelacées et des trames MS. Les paires de trames PS de liage sont entrelacées avec les chaînes PS et les chaînes MS pour lier ensemble les couches PS et MS. Les premières trames PS présentent un diamètre plus grand que les secondes trames PS, les secondes trames PS présentent un diamètre plus grand que la paire de trames PS de liage, et dans chaque répétition, les premières trames PS, les secondes trames PS et les trames PS de liage sont insérées séquentiellement, de préférence des grandes aux petites, formant une topographie en marches d'escalier.
PCT/US2023/079655 2022-11-15 2023-11-14 Toile de formation avec agencement de trame en escalier en vue de générer une topographie WO2024107737A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202263425512P 2022-11-15 2022-11-15
US63/425,512 2022-11-15

Publications (1)

Publication Number Publication Date
WO2024107737A1 true WO2024107737A1 (fr) 2024-05-23

Family

ID=91028819

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2023/079655 WO2024107737A1 (fr) 2022-11-15 2023-11-14 Toile de formation avec agencement de trame en escalier en vue de générer une topographie

Country Status (2)

Country Link
US (1) US20240158960A1 (fr)
WO (1) WO2024107737A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408637A (en) * 1979-11-19 1983-10-11 Martel, Catala & Cie Double layer forming fabrics for use in paper making machines
US5829489A (en) * 1995-10-05 1998-11-03 Nippon Filcon Co., Ltd Two-layer paper-making fabric having auxiliary weft on the paper-making side
US20050067040A1 (en) * 2003-09-29 2005-03-31 Quigley Scott D. Composite papermaking fabric
US20080105323A1 (en) * 2003-08-13 2008-05-08 Stewart Lister Hay Fabrics Employing Binder/Top Interchanging Yarn Pairs
US20200291578A1 (en) * 2017-09-29 2020-09-17 Kimberly-Clark Worldwide, Inc. Woven papermaking fabric having machine and cross-machine oriented topography

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408637A (en) * 1979-11-19 1983-10-11 Martel, Catala & Cie Double layer forming fabrics for use in paper making machines
US5829489A (en) * 1995-10-05 1998-11-03 Nippon Filcon Co., Ltd Two-layer paper-making fabric having auxiliary weft on the paper-making side
US20080105323A1 (en) * 2003-08-13 2008-05-08 Stewart Lister Hay Fabrics Employing Binder/Top Interchanging Yarn Pairs
US20050067040A1 (en) * 2003-09-29 2005-03-31 Quigley Scott D. Composite papermaking fabric
US20200291578A1 (en) * 2017-09-29 2020-09-17 Kimberly-Clark Worldwide, Inc. Woven papermaking fabric having machine and cross-machine oriented topography

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US20240158960A1 (en) 2024-05-16

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