EP0263527B1 - Bespannung für den Blattbildungsteil einer Papiermaschine mit zusätzlichen, flottierenden Querfäden grösserer Rapportlänge - Google Patents

Bespannung für den Blattbildungsteil einer Papiermaschine mit zusätzlichen, flottierenden Querfäden grösserer Rapportlänge Download PDF

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Publication number
EP0263527B1
EP0263527B1 EP87114756A EP87114756A EP0263527B1 EP 0263527 B1 EP0263527 B1 EP 0263527B1 EP 87114756 A EP87114756 A EP 87114756A EP 87114756 A EP87114756 A EP 87114756A EP 0263527 B1 EP0263527 B1 EP 0263527B1
Authority
EP
European Patent Office
Prior art keywords
threads
transverse threads
fabric
additional
paper
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.)
Expired - Lifetime
Application number
EP87114756A
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German (de)
English (en)
French (fr)
Other versions
EP0263527A1 (de
Inventor
Georg Dipl.-Ing. Borel
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.)
Herman Wangner GmbH and Co KG
Original Assignee
Herman Wangner GmbH and Co KG
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 Herman Wangner GmbH and Co KG filed Critical Herman Wangner GmbH and Co KG
Priority to AT87114756T priority Critical patent/ATE62947T1/de
Publication of EP0263527A1 publication Critical patent/EP0263527A1/de
Application granted granted Critical
Publication of EP0263527B1 publication Critical patent/EP0263527B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a covering for the sheet-forming part of a paper machine with a double-layer or multi-layer fabric made of interwoven longitudinal threads and transverse threads and with additional transverse threads floating on the paper side.
  • the additional sheet threads floating on the paper side are said to improve sheet removal, reduce the risk of marking and increase permeability.
  • the additional transverse threads are woven in such a way that they are bent as little as possible. As a result, however, they protrude so far on the paper side that they interfere with sheet formation. When cleaning the fabric with high-pressure water jets, protruding threads are often destroyed.
  • the invention has for its object to provide a covering of the type mentioned for the sheet formation area of a paper machine, in which the risk of destruction of transverse threads is reduced when cleaning with high pressure water jets.
  • the additional transverse threads have a greater repeat length than the normal transverse threads and float alternately in one weave repeat on the paper side and are not visible on the paper side in the next weave repeat.
  • the additional transverse threads are preferably woven in pairs in opposite directions, that is, in one weave repeat, one additional transverse thread of a pair floats on the paper side, while the other runs inside the fabric, and in the next repeat weave, the course is opposite, that is, the other floats on the paper side, while one runs inside the tissue.
  • the additional, floating cross threads are preferably made of particularly soft, easy-to-stretch material and have a smaller diameter than the normal cross threads.
  • the covering can be flat or endlessly woven. If the covering is woven flat, it is made endless by a woven seam.
  • the threads consist of plastic monofilaments, a material with a higher modulus of elasticity being generally chosen for the longitudinal threads than for the transverse threads.
  • the threads can also consist of plastic multifilaments.
  • FIG. 5 shows the weave cartridge of the base fabric (without additional transverse threads from example 1, the arrow indicating the direction of the warp or longitudinal threads, the black filled boxes mean that the chain is visible on the paper side, the weft at the other crossing points on the paper side - or cross threads are visible and the cross in some of the boxes again indicates that the chain is visible on the running side, that is to say runs under a pair of weft wires, and Fig. 6 shows the course of the longitudinal thread in Example 1, the additional transverse threads are also omitted.
  • Fig. 1 shows in cross section a double-layer, seven-shaft fabric.
  • a double-layer fabric is understood here to mean a fabric that contains two layers of transverse threads that are interwoven with a system of longitudinal threads. The top or paper side of the fabric is formed by interwoven longitudinal threads 1 and upper transverse threads 2. Each upper transverse thread 2 is assigned a lower transverse thread 5, so that the transverse threads are arranged in pairs. The longitudinal threads 1 are also interwoven with the lower transverse threads 5.
  • the lower transverse threads 5 have very long floats which project downwards and form the running side of the paper machine clothing. Since the lower transverse threads 5 are particularly strongly exposed to abrasion, they expediently have a larger diameter than the upper transverse threads 2 and partially consist of a particularly abrasion-resistant material, e.g. Alternating polyamide and polyester.
  • the fabric contains additional transverse threads 3, which are alternately woven in with the normal transverse threads 2 of the upper layer.
  • the additional transverse threads 3 differ in the weave pattern from the normal transverse threads 2 of the upper layer and have a greater repeat length, ie the pattern of their integration is repeated at greater intervals than that of the normal transverse threads 2.
  • the additional transverse threads 3 twice the repeat length as the upper transverse threads 2, ie the base fabric.
  • the additional transverse threads 3 are woven in such a way that they are visible in a weave repeat of the base fabric of the longitudinal threads 1 and transverse threads 2 and 5 on the paper side 4, lie monoplane with the offsets of the upper transverse threads 2 and contribute to the support of the sheet being formed while they are being formed run in the next repeat of the basic fabric inside the fabric. Since the embodiment of FIGS. 1 and 2 is a seven-strand base fabric, this means that the additional transverse threads 3 float on the paper side over six longitudinal threads 1 and then run inside the fabric over a distance that spans eight longitudinal threads 1.
  • the additional transverse threads 3 consist of relatively soft material with a low modulus of elasticity, e.g. the same material as the upper cross threads 2, but have a smaller diameter.
  • the embodiment of Fig. 1 has a seven-strand weave of the base fabric, i.e. each weave repeat contains seven longitudinal threads 1 and seven normal transverse threads 2 and 5, respectively, of the upper and lower layers. In addition, each weave repeat contains seven additional transverse threads 3.
  • FIG. 2 shows a top view of the paper side of the fabric, in particular the pronounced weave diagonal D1, which runs from top left to bottom right in FIG. 2. All offsets of the longitudinal threads 1 and the normal upper transverse threads 2 and the additional transverse threads 3 are arranged along this binding diagonal D1. The floats of the additional transverse threads 3 are offset such that they are not all in one weave diagonal, but are distributed over two adjacent weave diagonals. 2 shows a rough structuring in a further bond diagonal D 2, which runs from top right to bottom left. Surprisingly, this binding diagonal D2 does not mark the paper. It is even the case that the marking becomes smaller because the density of the transverse thread floats along the first weave diagonal D1 has been reduced.
  • Figures 3 and 4 show an embodiment in which the additional transverse threads 3 are woven in pairs in opposite directions.
  • the weave of the base fabric is the same as in the embodiment of FIGS. 1 and 4, and therefore only the integration of the additional transverse threads 3 is shown in FIG. 3.
  • the one additional transverse thread 3a of a pair has a paper-supporting float on the paper side 4 over a length that spans a weave repeat of seven longitudinal threads 1, then runs over the same length inside the fabric, while the other, woven in at the same place Transverse thread 3b of this pair initially runs inside the fabric and then only runs a distance spanning the repeat of seven longitudinal threads 1 on the paper side 4. As shown in FIG. 4, all the binding diagonals are then completely filled in by the additional transverse threads 3.
  • FIGS. 1 and 3 lie in a different vertical plane than the normal transverse threads 2 and 5 of the fabric.
  • the figures are a section in the plane of the additional transverse threads 3, so that the visible cross sections of the longitudinal threads 1 also apply to this plane.
  • the course of the normal transverse threads 2 and 5 visible in the background appears as if these transverse threads 2, 5 would pass through the longitudinal threads 1.
  • the longitudinal threads 1 have a different position at the intersection with the normal transverse threads 2 and 5 than the cross section of the longitudinal threads 1 shown.
  • the additional transverse threads 3 are firmly integrated in the sense that at least some of the longitudinal threads 1, which lie over an additional transverse thread 3, then run under one or both of the adjacent normal transverse threads 2.
  • the additional transverse threads 3 are preferably thinner than the normal transverse threads 2 of the upper layer. Since they are strongly integrated by the longitudinal threads 1 and run deep in the interior of the fabric in every second weave repeat of the base fabric, the additional transverse threads 3 are preferably made of soft polyester or polyamide material. This has the advantage of greater resistance when cleaning the paper machine clothing with high pressure water jets. Materials other than polyester or polyamide can also be used for the additional transverse threads, e.g. Polypropylene or polyvinylidene fluoride (Kynar). If special marking effects are to be achieved, floats of additional transverse threads of different diameters and different materials can be arranged along the binding diagonal D1 in order to break the monotony of the marking impression.
  • a 14-strand weave (seven-strand base fabric) is produced with a warp course, in which a chain runs over two pairs of wefts, between one pair of wefts, under one pair of wefts and between three pairs of wefts, and the warp floats on the paper side have a seven-strand satin distribution, as in the Figures 5 and 6 shown.
  • the weave of the base fabric has seven strands, and the additional weft wires 3 are not bound in every seven-strand repeat by the chain 1, but run according to FIGS. 1 and 2 within a seven-strand repeat on the paper side 4 and then the seven-strand repeat in the interior of the fabric .
  • the lower weft wires 5 consist alternately of polyester and polyamide.
  • the warp wires 1, the normal weft wires 2 and the additional weft wires are all in one plane.
  • the normal weft 5 is 8/100 mm lower than the chain, i.e. the paper machine clothing is a weft runner. Further information on the threads used can be found in the table.
  • the fabric has a finely structured surface (paper page 4). It is mainly used for the production of marking-sensitive writing and printing papers. It would be expected that due to the irregularity of the structure in the direction of the right-left diagonal D2, this tissue would be marked more. Surprisingly, however, this was not the case, presumably because the accumulation of the shot floats along the left-right diagonal D1 is interrupted by missing shot floats. This is in contrast to the experience that normally the diagonal is most marked.
  • the basic fabric is the same as in example 1.
  • the additional weft wires 3 are woven in pairs, as shown in FIGS. 3 and 4.
  • the two additional weft wires 3a and 3b of each pair are made of different materials, as in the following Specified table.
  • the additional weft wires 3a and 3b are arranged in such a way that floats made of polyester and polyamide alternate on the paper side 4 along the binding diagonal D1.

Landscapes

  • Paper (AREA)
  • Woven Fabrics (AREA)
EP87114756A 1986-10-10 1987-10-09 Bespannung für den Blattbildungsteil einer Papiermaschine mit zusätzlichen, flottierenden Querfäden grösserer Rapportlänge Expired - Lifetime EP0263527B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87114756T ATE62947T1 (de) 1986-10-10 1987-10-09 Bespannung fuer den blattbildungsteil einer papiermaschine mit zusaetzlichen, flottierenden querfaeden groesserer rapportlaenge.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863634649 DE3634649A1 (de) 1986-10-10 1986-10-10 Bespannung fuer den blattbildungsteil einer papiermaschine mit zusaetzlichen, flottierenden querfaeden groesserer rapportlaenge
DE3634649 1986-10-10

Publications (2)

Publication Number Publication Date
EP0263527A1 EP0263527A1 (de) 1988-04-13
EP0263527B1 true EP0263527B1 (de) 1991-04-24

Family

ID=6311521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87114756A Expired - Lifetime EP0263527B1 (de) 1986-10-10 1987-10-09 Bespannung für den Blattbildungsteil einer Papiermaschine mit zusätzlichen, flottierenden Querfäden grösserer Rapportlänge

Country Status (10)

Country Link
US (1) US4815503A (ja)
EP (1) EP0263527B1 (ja)
JP (1) JPS63105196A (ja)
AR (1) AR246570A1 (ja)
AT (1) ATE62947T1 (ja)
BR (1) BR8704906A (ja)
CA (1) CA1302844C (ja)
DE (2) DE3634649A1 (ja)
ES (1) ES2021669B3 (ja)
FI (1) FI88629C (ja)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4989647A (en) * 1988-04-08 1991-02-05 Huyck Corporaiton Dual warp forming fabric with a diagonal knuckle pattern
DE3817144A1 (de) * 1988-05-19 1989-11-30 Wangner Gmbh Co Kg Hermann Doppellagige bespannung fuer den blattbildungsbereich einer papiermaschine
JP2558153B2 (ja) * 1988-08-30 1996-11-27 日本フイルコン株式会社 ワイヤマークを改善した単織製紙用織物
JP2558154B2 (ja) * 1988-08-31 1996-11-27 日本フイルコン株式会社 製紙面の凹所に補助緯糸を配置した製紙用一重織物
DE3903198C2 (de) * 1989-02-03 1999-11-18 Kufferath Andreas Gmbh Mehrlagiges Siebgewebe einer Papiermaschine
SE462859B (sv) * 1989-06-28 1990-09-10 Scandiafelt Ab Pressfilt
DE3923938A1 (de) * 1989-07-19 1991-01-31 Oberdorfer Fa F Formiergewebe fuer die nasspartie einer papiermaschine
US4987929A (en) * 1989-08-25 1991-01-29 Huyck Corporation Forming fabric with interposing cross machine direction yarns
US5101866A (en) * 1991-01-15 1992-04-07 Niagara Lockport Industries Inc. Double layer papermakers fabric having extra support yarns
JP3444373B2 (ja) * 1994-03-18 2003-09-08 日本フイルコン株式会社 製紙面側織物に補助緯糸を配置した経糸２重緯糸２重製紙用織物
US5454405A (en) * 1994-06-02 1995-10-03 Albany International Corp. Triple layer papermaking fabric including top and bottom weft yarns interwoven with a warp yarn system
US5482567A (en) * 1994-12-06 1996-01-09 Huyck Licensco, Inc. Multilayer forming fabric
US5641001A (en) * 1995-08-16 1997-06-24 Huyck Licensco, Inc. Papermaker's fabric with additional cross machine direction yarns positioned in saddles
US5937914A (en) * 1997-02-20 1999-08-17 Weavexx Corporation Papermaker's fabric with auxiliary yarns
US6112774A (en) * 1998-06-02 2000-09-05 Weavexx Corporation Double layer papermaker's forming fabric with reduced twinning.
US6179013B1 (en) 1999-10-21 2001-01-30 Weavexx Corporation Low caliper multi-layer forming fabrics with machine side cross machine direction yarns having a flattened cross section
US6585006B1 (en) 2000-02-10 2003-07-01 Weavexx Corporation Papermaker's forming fabric with companion yarns
US6244306B1 (en) 2000-05-26 2001-06-12 Weavexx Corporation Papermaker's forming fabric
US6253796B1 (en) 2000-07-28 2001-07-03 Weavexx Corporation Papermaker's forming fabric
US6745797B2 (en) 2001-06-21 2004-06-08 Weavexx Corporation Papermaker's forming fabric
US6860969B2 (en) 2003-01-30 2005-03-01 Weavexx Corporation Papermaker's forming fabric
US6837277B2 (en) 2003-01-30 2005-01-04 Weavexx Corporation Papermaker's forming fabric
US7059357B2 (en) 2003-03-19 2006-06-13 Weavexx Corporation Warp-stitched multilayer papermaker's fabrics
US6896009B2 (en) * 2003-03-19 2005-05-24 Weavexx Corporation Machine direction yarn stitched triple layer papermaker's forming fabrics
US7243687B2 (en) * 2004-06-07 2007-07-17 Weavexx Corporation Papermaker's forming fabric with twice as many bottom MD yarns as top MD yarns
US7195040B2 (en) * 2005-02-18 2007-03-27 Weavexx Corporation Papermaker's forming fabric with machine direction stitching yarns that form machine side knuckles
US20060219313A1 (en) * 2005-03-31 2006-10-05 Hippolit Gstrein Papermaker's press felt with long machine direction floats in base fabric
JP4563260B2 (ja) * 2005-06-14 2010-10-13 日本フイルコン株式会社 工業用二層織物
US7484538B2 (en) * 2005-09-22 2009-02-03 Weavexx Corporation Papermaker's triple layer forming fabric with non-uniform top CMD floats
US7219701B2 (en) * 2005-09-27 2007-05-22 Weavexx Corporation Papermaker's forming fabric with machine direction stitching yarns that form machine side knuckles
JP4739903B2 (ja) * 2005-10-17 2011-08-03 日本フイルコン株式会社 工業用二層織物
US7275566B2 (en) 2006-02-27 2007-10-02 Weavexx Corporation Warped stitched papermaker's forming fabric with fewer effective top MD yarns than bottom MD yarns
US7580229B2 (en) 2006-04-27 2009-08-25 Hitachi Global Storage Technologies Netherlands B.V. Current-perpendicular-to-the-plane (CPP) magnetoresistive sensor with antiparallel-free layer structure and low current-induced noise
US7487805B2 (en) * 2007-01-31 2009-02-10 Weavexx Corporation Papermaker's forming fabric with cross-direction yarn stitching and ratio of top machined direction yarns to bottom machine direction yarns of less than 1
US7624766B2 (en) 2007-03-16 2009-12-01 Weavexx Corporation Warped stitched papermaker's forming fabric
US20090183795A1 (en) * 2008-01-23 2009-07-23 Kevin John Ward Multi-Layer Papermaker's Forming Fabric With Long Machine Side MD Floats
US7766053B2 (en) * 2008-10-31 2010-08-03 Weavexx Corporation Multi-layer papermaker's forming fabric with alternating paired and single top CMD yarns
EP2230352B1 (en) * 2009-03-20 2012-10-03 Heimbach GmbH & Co.KG Woven fabric band for circulation in a machine
CA2680924A1 (en) * 2009-09-29 2011-03-29 Richard Stone Papermakers' forming fabric including pairs of machine side complementary yarns
US8251103B2 (en) * 2009-11-04 2012-08-28 Weavexx Corporation Papermaker's forming fabric with engineered drainage channels
GB201315362D0 (en) * 2013-08-29 2013-10-09 Clear Edge Germany Gmbh Filter Element

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EP0085363A1 (en) * 1982-01-22 1983-08-10 Huyck Corporation A papermakers' fabric

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GB1572905A (en) * 1976-08-10 1980-08-06 Scapa Porritt Ltd Papermakers fabrics
US4119753A (en) * 1977-09-12 1978-10-10 Hyyck Corporation Papermaker's felt with grooved surface
US4281688A (en) * 1979-05-01 1981-08-04 Scapa Dryers (Canada) Ltd. Reversible forming fabric having dominating floats on each face
DE3036409C2 (de) * 1980-09-26 1983-01-20 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Doppellagiges Sieb für den Siebteil einer Papiermaschine
DE3146385C2 (de) * 1981-11-23 1985-10-31 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Doppellagiges Gewebe als Bespannung für Papiermaschinen
SE441016B (sv) * 1982-04-26 1985-09-02 Nordiskafilt Ab Formeringsvira for pappers-, cellulosa- eller liknande maskiner
SE435739B (sv) * 1983-02-23 1984-10-15 Nordiskafilt Ab Formeringsvira av dubbelvevnadstyp
DE3329739C1 (de) * 1983-08-17 1985-01-10 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Mehrlagige Bespannung fuer Papiermaschinen
DE3478319D1 (en) * 1984-06-14 1989-06-29 Oberdorfer Fa F Papermachine cloth

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
EP0085363A1 (en) * 1982-01-22 1983-08-10 Huyck Corporation A papermakers' fabric

Also Published As

Publication number Publication date
DE3634649A1 (de) 1988-04-14
ATE62947T1 (de) 1991-05-15
FI874363A0 (fi) 1987-10-05
DE3769574D1 (de) 1991-05-29
FI88629B (fi) 1993-02-26
AR246570A1 (es) 1994-08-31
EP0263527A1 (de) 1988-04-13
CA1302844C (en) 1992-06-09
BR8704906A (pt) 1988-05-24
FI874363A (fi) 1988-04-11
US4815503A (en) 1989-03-28
ES2021669B3 (es) 1991-11-16
JPS63105196A (ja) 1988-05-10
FI88629C (fi) 1993-06-10

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