EP1798335A1 - Habillage de machine à papier - Google Patents

Habillage de machine à papier Download PDF

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Publication number
EP1798335A1
EP1798335A1 EP06122507A EP06122507A EP1798335A1 EP 1798335 A1 EP1798335 A1 EP 1798335A1 EP 06122507 A EP06122507 A EP 06122507A EP 06122507 A EP06122507 A EP 06122507A EP 1798335 A1 EP1798335 A1 EP 1798335A1
Authority
EP
European Patent Office
Prior art keywords
threads
thread
longitudinal
binding
transverse
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
EP06122507A
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German (de)
English (en)
Other versions
EP1798335B1 (fr
Inventor
Petra Hack-Ueberall
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.)
Voith Patent GmbH
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Voith Patent GmbH
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Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1798335A1 publication Critical patent/EP1798335A1/fr
Application granted granted Critical
Publication of EP1798335B1 publication Critical patent/EP1798335B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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

Definitions

  • the invention relates to a papermaking wire according to the preamble of patent claim 1.
  • Paper machine screens are subject to a great variety of requirements.
  • the paper-facing paper side of the screen in particular for the production of graphic papers, must have a finely structured surface with as few marking points as possible, which are often formed by so-called binding diagonals.
  • the running side of the clothing must have a coarse structure with a high wear volume in order to achieve the best possible service life in order to protect the machine-directional and force-absorbing yarns.
  • coverings have been developed with a paper-side fabric and with a running-side fabric connected to it by means of binding threads.
  • a forming fabric which has a paper-side fabric formed in plain weave and in which two crossing points of the binding threads are formed in each running side repeat in the warp direction when changing between their weaves with the paper side and the running side fabric.
  • the warp bumps are arranged on diagonals running parallel to one another, which results in an increased marking of the paper formed on such a fabric.
  • a paper machine wire in particular a forming fabric, having an upper fabric layer repeating itself in upper rapports, the outer side of which forms the paper side of the wire
  • the screen further comprises a lower fabric layer, the outside of which forms the machine side of the screen and arranged in groups in the longitudinal thread direction extending binding threads which connect the upper and lower fabric layers together.
  • the upper fabric layer is formed at least by the binding threads and the upper transverse threads extending transversely to the binding threads, in that the binding threads of each group alternate intermittently during weaving with the upper transverse threads in the longitudinal thread direction and jointly form an upper longitudinal thread course Repeats along the length of the upper repeat in the longitudinal direction.
  • the lower fabric layer of the paper machine clothing according to the invention is formed at least by the binding threads and these interwoven transverse transverse threads extending transversely to the binding threads, whereby the binding threads of each group undergo interweaving with the upper transverse threads for interweaving with the lower transverse threads and vice versa Crossing training of intersections.
  • the papermaking fabric according to the invention is characterized in that the binding threads of at least one group are interwoven with the upper and lower transverse threads such that at least two successive crossing points are arranged along the length of the upper repeat in the longitudinal thread direction.
  • a high binding frequency is created between the upper or paper side and the lower or running side fabric, whereby a stable connection between the paper side and the running side fabric is provided.
  • intersection points can be distributed more irregularly than is possible with the coverings known from the prior art, which in particular reduces the visibility of markings produced by different hydraulic dewatering pressure becomes.
  • the upper fabric layer is formed only by the weaving of the upper transverse threads with the binding threads.
  • the upper fabric layer is formed by the weaving of the grouped binding threads with the upper transverse threads and by the weaving of upper longitudinal threads with the upper transverse threads.
  • the upper longitudinal threads are woven only with the upper transverse threads, which is why everyone upper longitudinal thread when weaving with the upper transverse thread forms an upper longitudinal thread course.
  • the upper fabric layer is irregular. If the upper fabric layer is formed by interweaving the binding threads with the upper transverse threads, then each upper longitudinal thread course formed by a group of binding threads comprises longitudinal thread bumps and longitudinal thread bumps. In this case, a longitudinal thread lift is formed by the binding yarn of a group weaving in each case above the upper transverse threads crossing an upper transverse thread continuously on the outside of the upper fabric layer. A longitudinal thread reduction is formed in this case by the respective upper transverse threads weaving binder thread of a group between upper and lower fabric layer continuously crosses an upper transverse thread.
  • the upper fabric layer is additionally formed by the interweaving of upper longitudinal threads with the upper transverse threads, then longitudinal thread elevations are formed by the upper longitudinal thread continuously crossing an upper transverse thread on the outside of the upper fabric layer. Furthermore, longitudinal thread decreases are formed by the upper longitudinal thread between the upper and lower fabric layers continuously crossing an upper transverse thread.
  • the upper fabric layer is formed irregularly by the arrangement of the Leksfadenhebungen and -derenkungen forms an irregular pattern in the upper rapport on the outside.
  • the irregular pattern of the upper fabric layer can be formed by at least two L Lucassfadenverstructure are formed in the upper repeat that one of the two Leksfadenverstructure not by displacement of all its longitudinal thread elevations and depressions by an equal number of upper transverse threads in the longitudinal direction of the can produce other of the two longitudinal thread courses.
  • the upper repeat comprises at least two longitudinal thread courses in which one of the two longitudinal thread courses can not be produced by offsetting all of its longitudinal thread elevations and dips by an equal number of upper transverse threads in the longitudinal thread direction from the other of the two longitudinal thread courses, the number of Binding diagonals and regular structures on the paper side reduced, resulting in a reduction of the marking of the paper machine screen produced with the paper.
  • the upper weave pattern has an irregular structure in that none of the upper longitudinal thread courses in the upper repeat by offset all its longitudinal thread elevations and longitudinal thread descents by a same Number of upper transverse threads in the longitudinal direction of the thread can be generated from another upper longitudinal thread course of the repeat.
  • bonds are called creping bonds.
  • the upper fabric layer preferably comprises upper transverse threads or upper transverse threads and binding threads which have a diameter in the range from 0.03 mm to 0.5 mm, preferably 0.08 mm to 0.15 mm.
  • the irregular pattern is formed by the upper repeat has a first upper longitudinal thread course, an immediately adjacent second longitudinal thread course and the second immediately adjacent third longitudinal thread course, which are formed such that the Offset of the longitudinal thread elevations and longitudinal thread descents of the second longitudinal thread course relative to the longitudinal thread elevations and depressions of the first longitudinal thread course is not equal to the offset of the longitudinal thread elevations and longitudinal thread elevations of the third longitudinal thread course relative to the longitudinal thread elevations and depressions of the second longitudinal thread course.
  • the irregular paper-side weave structure can also be provided by the fact that the upper weave structure comprises a number of mutually different longitudinal thread runs, wherein the number of mutually different longitudinal thread runs is less than the number of longitudinal thread runs forming the upper repeat.
  • the mutually different longitudinal thread paths are arranged in a non-repetitive order over the entire upper repeat.
  • the resulting longitudinal thread repeat can then be very large, for example, 12 longitudinal thread courses include, wherein the number of mutually different longitudinal thread paths, for example, is only four. This means that a very large binding can be woven with only a small number of shafts for the paper side.
  • the order of the longitudinal thread courses can, for example, be as follows: 1-2-3-1-4-1-2-3-4-2-3-1
  • the number of longitudinal thread bumps and longitudinal thread bumps in the upper repeat is substantially the same.
  • the paper side is dominated neither by longitudinal thread elevations nor by longitudinal thread reductions, so that a result in the plane paper page with irregular structure and resulting, with even further reduced marking tendency is created.
  • another particularly preferred embodiment of the invention provides that none of the longitudinal thread courses in the upper repeat by offset all its longitudinal thread elevations and depressions by an equal number of upper transverse threads in the longitudinal direction of a different thread Create longitudinal thread course. This means that each longitudinal thread course in the upper repeat in its L jossfadenhebungs- and lowering sequence is different from the other L jossfadenverêtn.
  • the irregular structure of the upper fabric layer can be formed alone or in combination by: Free textile development, alteration of a textile basic weave, derivation of a textile basic weave, extension of a textile basic weave.
  • the reduction of the marking tendency can be further reduced if the paper-side repeat is large, i. is formed from at least 14 upper transverse threads.
  • the tendency to mark can be significantly reduced, since the spacing of regularly arranged longitudinal thread elevations increases as a result of the enlargement of the repeat.
  • a preferred embodiment of the invention provides that a maximum of three, preferably a maximum of two paper-side longitudinal thread elevations are arranged adjacent to each other immediately adjacent to each upper longitudinal thread and that a maximum of three, preferably a maximum of two paper-side Leksfadensenkept are arranged adjacent to each other directly.
  • a ratio of upper to lower transverse threads of greater than 1 it is particularly possible to provide a fabric that connects a fine, ie non-marking paper side and a coarse and wearable running side, since on the one hand the paper-side fabric by more transverse threads than is formed in a 1 to 1 ratio and on the other hand for the running side fabric running side transverse threads with a larger thread diameter can be used than in a 1 to 1 ratio.
  • each lower transverse thread is held by a plurality of binding threads by each of these binding threads on the outside of the lower fabric layer continuously crosses the respective lower transverse thread, wherein some of the respective lower transverse thread holding binding threads by at least one of the respective lower Transverse thread non-retaining binding threads are spaced from each other by the non-retaining binding thread not on the outside of the lower fabric layer continuously crosses the respective lower transverse thread, and wherein a plurality of lower transverse threads are provided, in each case between successive, the respective lower transverse thread holding binding threads an equal Number of non-retaining binding threads is arranged.
  • the holding force can furthermore be uniformly distributed, as a result of which a significantly stronger connection between the two fabric layers can be achieved, as a result of which their relative movement to one another can be reduced to a minimum, which leads to a minimization of the internal wear of the paper machine wire according to the invention ,
  • the uniform distribution of the binding sites and the possible stronger attachment of the upper to the lower fabric layer leads to a reduced total thickness of the paper machine fabric according to the invention in comparison to the screens known from the prior art.
  • an equal number of binding threads not holding the transverse thread are arranged for each lower transverse thread between successive binding threads respectively holding the lower transverse thread.
  • the number of binding threads not holding the respective transverse thread is between two and twenty, preferably between six and ten. Tests have shown that with the same float lengths of between two and twenty binding threads not holding the respective lower transverse thread a good connection between upper and lower fabric layer can be provided, coupled with improved wear resistance, in particular for use in paper machines at speeds of 1500 m / min or more.
  • the overall repeat is preferably formed by a multiplicity of longitudinal threads and / or upper and lower transverse threads.
  • the overall repeat of the papermaker's fabric may include, for example, 24 or more or 26 or more or 32 or more or 48 or more longitudinal thread courses and / or 24 or more or 26 or more or 32 or more or 48 or more top and bottom transverse threads.
  • the marking tendency of the paper side can be significantly reduced by the upper fabric layer having an upper repeat formed by 24 or more longitudinal thread courses and by 24 or more upper transverse threads.
  • the binding threads are warp threads and the transverse threads are weft threads.
  • the binding threads are weft threads and the transverse threads are warp threads. In the latter case, it is a shotgun system.
  • FIG. 1 shows the course of two binder threads B1a, B1b arranged next to one another and of a papermaker's fabric 100 according to the invention designed as a forming fabric.
  • the two binding threads B1a, B1b are warp yarns which alternate in sections with upper or paper-side transverse threads P1 through P16, which are weft threads, are interwoven.
  • the two binding threads B1a, B1b together form an upper or paper-side longitudinal thread course V1, which is repeated in paper-side longitudinal thread repeat A.
  • the paper-side longitudinal thread repeat A is therefore formed from 16 upper transverse threads.
  • the two binding threads B1a, B1b are interwoven in sections alternately with lower or running transverse threads L1 to L8, which are also weft threads, and form a running-side longitudinal thread course 10 during weaving with the running side transverse threads L1 to L8, resulting in running longitudinal thread patterns B repeated.
  • the lower or continuous longitudinal thread repeat B is therefore formed from eight running side transverse threads.
  • the ratio of paper-side transverse threads P1 to P16 to running-side transverse threads L1 to L8 is 2: 1.
  • the binding threads B1a, B1b of the group intersect to form intersections 103 and 104.
  • the two binding threads B1a, B1b forming a group are interwoven with the paper-side transverse threads P1 through P16 and with the running-side transverse threads L1 through L8, that at least two successively arranged intersection points 103 and 104 are arranged within a paper-side longitudinal thread repeat A.
  • binding threads B1a, B1b are interwoven with the paper-side P1 to P16 and running-side L1 to L8 transverse threads in such a way that two consecutively arranged crossing points 103 and 104 are arranged within each longitudinal thread repeat B on the side.
  • the paper-side fabric 101 is formed by weaving the paper-side transverse threads P1 to P16 with the binding threads (this becomes apparent later from FIGS. 2 and 3). Furthermore, the running side fabric 102 is formed by weaving the running side transverse threads L1 to L8 with the binding threads (this becomes apparent from FIG. 3).
  • FIG. 2 shows a schematic representation of paper-side longitudinal thread elevations (dark squares) and paper-side longitudinal thread depressions (light squares) in plan view of the paper-side fabric 101 from FIG. 1, which are formed during weaving of the binding threads grouped as pairs with the paper-side transverse threads P1 to P16 ,
  • the two binding threads B1a, B1b weave along the longitudinal yarn path V1 over the paper-side transverse threads P2, P3, P5, P8, P10, P12, P13 and P15 to form paper-side longitudinal thread bumps and under the paper-side transverse threads P1, P4, P6, P7 , P9, P11, P14 and P16 to form paper-side longitudinal thread depressions (see also Fig. 1).
  • the paper-side fabric 101 is formed by the repetition of paper-side rapport 105 formed respectively by longitudinal yarn courses V1 to V8 in weaving above and below the paper-side transverse threads P1 to P16.
  • FIG. 2 thus represents four juxtaposed paper-side rapports 105.
  • an irregular pattern should be understood in this context to mean a pattern in which not all the longitudinal thread bumps in the repeat 105 can be developed from one of the longitudinal thread courses by a single law.
  • An example of such an irregular pattern is, for example, a pattern in which at least two longitudinal thread courses are formed such that one of the two longitudinal thread courses does not result from an offset of all its longitudinal thread elevations and elevations by an equal number of upper transverse threads in the longitudinal thread direction from the other of the two Create longitudinal thread courses.
  • the irregular pattern in the repeat 105 is formed in that none of the longitudinal thread courses V1 to V8 can be produced by displacing all of its binder thread elevations and counters by an equal number of upper transverse threads P1 to P16 in the longitudinal thread direction from another longitudinal thread course ,
  • the longitudinal thread progression V1 can not be produced from any of the longitudinal thread progressions V2 to V8 by displacing all of its longitudinal thread elevations and countersinks by an equal number of upper transverse threads P1 to P16 in the longitudinal thread direction.
  • each paper-side longitudinal thread course V1 to V8 in the paper-side repeat 105 is formed by a maximum of two paper-side longitudinal thread bumps arranged directly adjacent to one another and by a maximum of two paper-side longitudinal thread bumps arranged directly adjacent to one another.
  • FIG. 3 shows the weaving paths of all binding threads B1a, B1b, B2a, B2b .... to B8a, B8b of the repeat of the papermachine clothing 101 according to the invention from Fig. 1.
  • each form the longitudinal thread pairs B1a, B1b and B2a, B2b and B3a, B3b to B8a, B8b together when weaving with the paper-side transverse threads P1 to P16 the paper-side longitudinal thread paths 1 and 2 known from FIG 2 and 3 to 8.
EP06122507A 2005-12-16 2006-10-18 Habillage de machine à papier Not-in-force EP1798335B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005060301A DE102005060301A1 (de) 2005-12-16 2005-12-16 Papiermaschinenbespannung

Publications (2)

Publication Number Publication Date
EP1798335A1 true EP1798335A1 (fr) 2007-06-20
EP1798335B1 EP1798335B1 (fr) 2010-07-14

Family

ID=37762471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06122507A Not-in-force EP1798335B1 (fr) 2005-12-16 2006-10-18 Habillage de machine à papier

Country Status (5)

Country Link
US (1) US7503351B2 (fr)
EP (1) EP1798335B1 (fr)
AT (1) ATE474084T1 (fr)
DE (2) DE102005060301A1 (fr)
ES (1) ES2346785T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1936025A1 (fr) * 2006-12-22 2008-06-25 Voith Patent GmbH Bande de tissu pour une machine destinée à la fabrication de matériaux en bande et procédé de fabrication d'une telle bande de tissu
CN102741474A (zh) * 2010-05-21 2012-10-17 安德里茨技术资产管理有限公司 纸张形成造纸网

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005060300A1 (de) * 2005-12-16 2007-06-21 Voith Patent Gmbh Papiermaschinensieb
US20080196784A1 (en) * 2007-02-15 2008-08-21 Scott Quigley Wear side weave pattern of a composite forming fabric
CN103088691B (zh) * 2012-12-13 2016-06-01 安徽太平洋特种网业有限公司 一种经向接结三层造纸网的生产工艺
JP7334099B2 (ja) * 2019-09-17 2023-08-28 日本フエルト株式会社 製紙用経緯２層織物

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5826627A (en) 1996-03-04 1998-10-27 Jwi Ltd. Composite papermaking fabric with paired weft binding yarns
WO1999061698A1 (fr) 1998-05-23 1999-12-02 Jwi Ltd. Toile de formation composite a fil de chaine de liage
WO2002000996A1 (fr) * 2000-06-29 2002-01-03 Andreas Kufferath Gmbh & Co. Kg Toile de machine a papier
WO2006083604A1 (fr) 2005-02-01 2006-08-10 Albany International Corp. Tissus a trois couches comprenant de multiples liants de contour
EP1746202A1 (fr) 2005-07-23 2007-01-24 Voith Patent GmbH Procédé de fabrication d'une toile de machine à papier

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US4071050A (en) * 1972-09-01 1978-01-31 Nordiska Maskinfilt Aktiebolaget Double-layer forming fabric
SE385486B (sv) * 1974-10-10 1976-07-05 Nordiska Maskinfilt Ab Formeringsvira for pappers-, cellulosa- eller liknande maskiner samt sett att framstella densamma
US4564051A (en) * 1983-07-16 1986-01-14 Andreas Kufferath Gmbh & Co. Kg Multiple ply dewatering screen particularly for a web forming part of a paper making machine
DE3801051A1 (de) * 1988-01-15 1989-07-27 Wangner Gmbh Co Kg Hermann Doppellagige bespannung fuer den blattbildungsbereich einer papiermaschine
DE3923938A1 (de) * 1989-07-19 1991-01-31 Oberdorfer Fa F Formiergewebe fuer die nasspartie einer papiermaschine
DE3938159A1 (de) * 1989-11-16 1991-05-23 Oberdorfer Fa F Verbundgewebe fuer papiermaschinensiebe
US5151316A (en) * 1989-12-04 1992-09-29 Asten Group, Inc. Multi-layered papermaker's fabric for thru-dryer application
AT393521B (de) * 1990-05-08 1991-11-11 Hutter & Schrantz Ag Gewebe aus kunststoff-monofilamenten fuer den einsatz als entwaesserungssieb einer papiermaschine
DE4302031C1 (de) * 1993-01-26 1993-12-16 Heimbach Gmbh Thomas Josef Trockensieb sowie Verfahren zu dessen Herstellung
US5421374A (en) * 1993-10-08 1995-06-06 Asten Group, Inc. Two-ply forming fabric with three or more times as many CMD yarns in the top ply than in the bottom ply
DE10039736A1 (de) * 2000-08-16 2002-03-07 Kufferath Andreas Gmbh Verbundgewebe
FI112261B (fi) * 2002-05-06 2003-11-14 Tamfelt Oyj Abp Paperikonekudos
MXPA03004518A (es) * 2002-05-24 2005-11-23 Nippon Filcon Kk Tela bicapa, industrial.
US6837275B2 (en) * 2002-11-07 2005-01-04 Albany International Corp. Air channel dryer fabric

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5826627A (en) 1996-03-04 1998-10-27 Jwi Ltd. Composite papermaking fabric with paired weft binding yarns
WO1999061698A1 (fr) 1998-05-23 1999-12-02 Jwi Ltd. Toile de formation composite a fil de chaine de liage
WO2002000996A1 (fr) * 2000-06-29 2002-01-03 Andreas Kufferath Gmbh & Co. Kg Toile de machine a papier
EP1294981A1 (fr) 2000-06-29 2003-03-26 Andreas Kufferath GmbH & Co. KG Toile de machine a papier
WO2006083604A1 (fr) 2005-02-01 2006-08-10 Albany International Corp. Tissus a trois couches comprenant de multiples liants de contour
EP1746202A1 (fr) 2005-07-23 2007-01-24 Voith Patent GmbH Procédé de fabrication d'une toile de machine à papier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1936025A1 (fr) * 2006-12-22 2008-06-25 Voith Patent GmbH Bande de tissu pour une machine destinée à la fabrication de matériaux en bande et procédé de fabrication d'une telle bande de tissu
CN102741474A (zh) * 2010-05-21 2012-10-17 安德里茨技术资产管理有限公司 纸张形成造纸网
CN102741474B (zh) * 2010-05-21 2015-01-14 安德里茨技术资产管理有限公司 纸张形成造纸网

Also Published As

Publication number Publication date
ATE474084T1 (de) 2010-07-15
EP1798335B1 (fr) 2010-07-14
ES2346785T3 (es) 2010-10-20
DE102005060301A1 (de) 2007-06-21
DE502006007409D1 (de) 2010-08-26
US7503351B2 (en) 2009-03-17
US20070137720A1 (en) 2007-06-21

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