EP1746202B1 - Procédé de fabrication d'une toile de machine à papier - Google Patents

Procédé de fabrication d'une toile de machine à papier Download PDF

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Publication number
EP1746202B1
EP1746202B1 EP06116125A EP06116125A EP1746202B1 EP 1746202 B1 EP1746202 B1 EP 1746202B1 EP 06116125 A EP06116125 A EP 06116125A EP 06116125 A EP06116125 A EP 06116125A EP 1746202 B1 EP1746202 B1 EP 1746202B1
Authority
EP
European Patent Office
Prior art keywords
warp
repeat
warp thread
threads
draft
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Active
Application number
EP06116125A
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German (de)
English (en)
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EP1746202A1 (fr
Inventor
Arved Westerkamp
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
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Publication of EP1746202A1 publication Critical patent/EP1746202A1/fr
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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

Definitions

  • the present invention relates to a method for producing a papermaker's fabric having a paper-side layer of weft threads and a running side layer of weft threads and at least two warp thread systems interwoven in each case with the paper-side weft threads and / or the weft side weft threads.
  • Such papermaking fabrics serve to receive the papermaking stock, generally in the form of a fiber suspension, from a feed system.
  • This base material is distributed flat on such a paper machine screen or between two such paper machine screens.
  • water can be withdrawn through existing in such a sieve openings of the fiber suspension.
  • An essential requirement of such paper machine fabrics is that the paper produced therewith displays as little as possible the fabric structure of the paper-side fabric layer. That is, it should be possible to obtain a smooth as possible, structure-free paper surface.
  • a paper-side fabric layer includes a paper-side layer of weft yarns interwoven with warp yarns of a first warp yarn system associated with the paper-side fabric layer.
  • a second fabric layer comprises running weft threads which are interwoven with the warp threads of a second warp thread system assigned to the running side fabric layer.
  • binding weft threads are present, which set alternately on warp threads of the running side fabric layer and warp threads of the paper-side fabric layer.
  • binding warp threads here, ie to provide a further warp thread system ensuring the mutual connection of the two fabric layers.
  • the WO 02/00996 A1 discloses a papermaker's fabric also with two plies of weft yarns, namely a paper side ply with somewhat thinner weft yarns and a running side ply with somewhat thicker weft yarns.
  • Two warp thread systems are provided so that the warp yarns of one system and the warp yarns of the other system are paired with each other, and these respective pairs of warp yarns of two different warp yarn systems alternate with each other in their integration with the weft yarns on the side and weft yarns on the paper side , so that on the one hand on the paper side, a very fine fabric structure is obtained, for example, with plain weave, on the other hand at the same time, however, a connection of the two fabric layers is achieved by these threads.
  • the US 2,792,851 discloses a method of producing a low shrinkage tissue.
  • this object is achieved by a method for producing a papermaking fabric having a paper-side layer of weft threads and a running side layer of weft threads and at least two interwoven each with the paper-side weft threads and / or the running side weft yarn warp threads, each Kettfadensys tem is associated with a group of shafts through which the warp threads of the warp yarn systems are to be shed, the method comprising creating a draft scheme with a pull-in repeat for the warp yarn systems, in which pull-in repeat for at least one of the warp yarn systems repeating in the pull-in repeat is provided.
  • the method according to the invention is based on the finding that the development of stresses within a papermaking screen is an essential factor contributing to the generation of markings in the paper.
  • This development of stresses which is essentially supported by very uniform patterns or high symmetries, is inventively counteracted by the fact that already in the definition of the feeder, ie the assignment of the individual warp threads of the various warp thread systems to certain shafts, the structure of defined voltages a targeted irregularity is counteracted.
  • the drawing repeat for at least one warp thread no Unterrapport be provided.
  • the collection pattern is repeated only by joining several collection reports within the collection scheme, but not within each individual collection repeat.
  • a repetitive sub-repeat is provided for the retraction repeat for at least two warp thread systems and that the numbers of repetitions of the sub-rapport in the retraction repeat differ. Even if in each case at least two warp thread systems, in each case, subreports are provided within a catchment repeat, but these have a different number of repetitions within the catchment repeat or each Einzugsrapportes occur, a nonuniformity can be achieved within the Einzugsrapportes.
  • the catchment repeat at least the group of shafts, which are assigned to a warp thread system, comprises shanks following one another in the warp direction.
  • the draw-in pattern or draw-in scheme can be further varied in the direction of greater non-uniformity, if in the pull-in repeat at least the two different warp thread systems associated groups of shanks in the warp direction are nested.
  • At least one shank is associated with two warp threads of the same warp thread system in the pull-in repeat.
  • this depends greatly on the binding structure to be achieved in the fabric layers.
  • the process according to the invention can be used to particular advantage in the production of paper machine fabrics on weaving machines with at least 25 shafts, preferably with at least 27 shanks and particularly preferably with at least 30 shanks.
  • the present invention further relates to a papermaker's fabric made by a process according to the invention.
  • a papermaking fabric manufacturable in accordance with the principles of the present invention is shown in fragmentary and longitudinal warp longitudinal section and indicated generally at 110.
  • This paper machine screen is constructed with two fabric layers 112, 114.
  • the fabric layer 112 is a paper-side fabric layer, that is, at the in Fig. 1 On the upper side, that surface is ready, on which the fiber suspension used for papermaking is applied and subsequently the paper is formed.
  • the fabric layer 114 is to be interpreted as a running fabric layer. This fabric layer thus interacts with the paper machine screen 110 leading or also driving wheels or rollers.
  • the fabric layer 112 comprises a paper-side layer of weft threads 116, while the fabric layer 114 comprises a running side layer of weft threads 118.
  • these weft threads 116 and 118 extend essentially transversely to the production direction of the papermaking wire 110.
  • a first warp thread system 120 with warp threads 122 is also provided. These warp threads 122 are interwoven with the weft threads 116 of the paper side layer of weft threads, wherein, for example, the weft threads 116 can realize a plain weave, a twill weave or the like with the warp threads 122 of the first warp thread system 120 lying next to one another in the weft direction.
  • the running-side fabric layer 114 comprises, in addition to the run-side position of weft threads 118, a second warp thread system 124 with warp threads 126. These warp threads 126 are connected to the weft threads 118 of the running side layer of FIG Woven threads interwoven, in which case a bond pattern may be selected, which is best suited to the particular occurring in terms of mechanical stress and abrasion on the running side requirements.
  • a third warp yarn 128 is provided with warp threads 130.
  • shedding machines 122, 126, 130 of the various warp yarn systems 120, 124, 128 are generally used to shed machines having a plurality of shafts sequentially arranged in the warp direction for shedding the warp yarns 122, 126.
  • shafts A, B and C are in the Fig. 1 schematically shafts A, B and C indicated.
  • the shaft A symbolically representative of a group of shanks explained in greater detail below interacts with the warp thread 122 of the first warp thread system 120.
  • this warp thread 122 is passed through an eyelet 132 of a strand 134 of the shaft A.
  • the shank B cooperates with the warp yarn 130 of the third warp yarn system 128, since this warp yarn 130 is passed through an eyelet 136 of a strand 138 of the shank B.
  • the shank C cooperates with the warp yarn 126 of the second warp yarn system 124 by passing this warp yarn 126 through an eyelet 140 of a strand 142 of this shank C.
  • these shafts A, B and C are occupied in the height direction, so that with a respective Shank cooperating warp thread with respect to a weft to be introduced in the correct plane, ie above or below to position.
  • the number of shanks to be provided or used for the shedding depends on the pattern of bonding to be realized. It may be necessary, on the one hand, to provide a separate shaft for each warp thread of a particular warp thread system within a weave repeat viewed in the weft direction in order to be able to move this warp thread independently of all other warp threads of this warp thread system and, on the other hand, separate groups of shafts for the different warp thread systems in order to be able to move the respective warp threads defining or associated with the respective warp threads independently of the warp threads of other warp thread systems for shedding.
  • those are in the Fig. 1 shown shafts A, B and C representatively for each of the individual warp systems associated groups of shafts, which must include at least two shafts, in general, as explained below, but more than two shafts include.
  • FIG. 12 illustrates the weaving scheme constructed in accordance with the principles of the present invention, for example, in FIG Fig. 1 illustrated paper machine screen. It is in Fig. 2 a pull-in repeat is shown, ie a section viewed in the weft direction, which then represents a unit repeating itself in the direction of the shot, that is to say several times in a row.
  • a pull-in repeat is shown, ie a section viewed in the weft direction, which then represents a unit repeating itself in the direction of the shot, that is to say several times in a row.
  • the horizontal rows of boxes, numbered 1-25 correspond to the shafts used to make them. This means that 25 shafts are used in the illustrated case.
  • the vertical columns of boxes each represent a warp thread, in which case a collection repeat comprises 48 warp threads.
  • each selected box represents the interaction of a particular warp with a particular stock.
  • the shaft 1 interacts with the warp threads 17 and 41.
  • these warp threads 17 and 41 are each guided by loops of strands of the shaft 1, so that during a vertical movement of the shaft 1, these two warp threads 17 and 41 are moved to shedding.
  • the warp threads are the ones referred to above Fig. 1 already explained three warp threads 120, 124 and 128 shown with different patterns.
  • the warp yarns numbered 1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45 illustrated with checkered patterns or intersecting lines are the warp yarns of the first warp yarn system 120, ie those which together with the weft threads 16 form the paper-side fabric layer.
  • the warp threads 4, 10, 15, 18, 24, 28, 34, 39, 42 and 48 shown with oblique hatching are the warp threads of the second warp thread system 124, ie those warp threads which together with the weft threads 118 form the running side fabric layer 114.
  • the remaining warp threads ie the black-marked warp threads 2, 3, 6, 7, 8, 11, 12, 14, 16, 19, 20, 22, 23, 26, 27, 30, 31, 32, 35, 36, 38 , 40, 43, 44, 46, 47, are the warp threads of the third warp thread system 128, ie those warp threads which realize the mutual connection of the two fabric layers 112, 114.
  • each warp yarn system 120, 124 and 128, respective groups of shafts are provided, wherein the group associated with the first warp yarn system 120 comprises the shafts 1 to 6, the group associated with the second warp yarn system 124 comprises the shafts 16 to 25 and that of the third Warp system 128 associated group comprising shafts 7 to 15.
  • the stems of the individual groups in the warp direction follow each other directly, so that there is a direct and without mixing existing sequence of these three groups of shafts 1 to 6, 7 to 15 and 16 to 25.
  • the retract repeat illustrated in FIG. 1 illustrates that this repeating smallest unit of the retraction scheme for all three warp thread systems 120, 124 and 128 is associated with the two warp thread systems 120 and 128, ie the warp yarns shown in checkered pattern and the warp yarns shown in black. That is, within the pull-in repeat defined for all three warp thread systems is 120 and 128 respectively for the two warp thread systems an even smaller repeating pattern unit exists.
  • the associated lower repeat comprises six warp yarns, that is, for example, the warp yarns 1, 5, 9, 13, 17, and 21.
  • the subreport associated with the first warp threading system 120 is present twice.
  • the assigned subreport is present twice within the catchment repeat, once with the warp threads 2, 3, 6, 7, 8, 11, 12, 14, 16, 19, 20, 22 23.
  • the second repetition then has the warp thread 26 as the first warp thread occurring in the numbering sequence and furthermore comprises the warp threads 27, 30, 31, 32, 35, 36, 38, 40, 43, 44, 46, 47.
  • Such a pattern repeating within the draw repeat does not exist in the second warp thread system, ie the warp threads interacting with the shafts 16 to 25.
  • the next repetition actually takes place only at the next repetition of the catchment repeat, which ultimately also serves as the basis for the catch repeat comprising all three warp thread systems 120, 124 and 122 extending over the warp threads 1 to 48.
  • a catchment repeat only in association with a single of the three warp yarns 120, 124 and 128 may be provided a subreport, while repeated in the other two warp yarns, the collection pattern only every 48 threads.
  • the division of the sub-report or the sub-reports with respect to the catchment report could be different. For example, a subreport could be present three times or more in the catchment repeat.
  • a paper machine screen would then be produced which has no warp threads essentially serving only the mutual connection of the fabric plies 112, 114, but a papermaking fabric in which the warp threads of the two warp thread systems woven together with the weft threads simultaneously the connection is made.
  • a subreport exists in association with the first warp thread system 120, namely a subreport occurring twice in the pull-in repeat, while no subreport is present in association with the second warp thread system 124.
  • FIG. 3 Another variation is in Fig. 3 illustrated.
  • the shanks of the different groups of shanks cooperating with the warp threads of the different warp thread systems do not define a warp-sequential block formation, but that a nesting of the individual groups is present.
  • the shafts 3, 6, 9, 12, 15 and 18 are effective in association with the first warp thread system 120, ie the warp threads illustrated with crossed lines.
  • the shafts 14, 16, 17 and 19 to 25 are effective while in association with the third warp thread system 128, ie the warp threads realizing the mutual connection of the fabric layers 112, 114 that shafts 1, 2, 4, 5, 7, 8, 10, 11 and 13 are effective. Nonetheless, here as well, in association with the warp threads of the first warp thread system 120 and the warp threads of the third warp thread system 128, a repeat repeat is present in the repeat pattern, whereas this is not the case with the warp threads of the second warp thread system 124.
  • Fig. 2 and 3 show that shafts can interact with a single warp thread or can cooperate with several warp threads. This will depend primarily on which weave pattern is to be weaved and which of the warp threads for this purpose are always to move together to shed training. In general, it will be advantageous to keep the number of shafts used as low as possible, so that, if possible, as many warp threads should cooperate with a shaft. It should be understood, of course, that due to the fact that the warp threads of different warp thread systems are basically to be moved independently of each other, a shaft actually only ever cooperates with warp threads of a warp thread system.

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  • Paper (AREA)
  • Looms (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Claims (7)

  1. Procédé de fabrication d'une toile de machine à papier avec une couche de fils de trame côté papier (116) et une couche de fils de trame côté courroie (118) et au moins deux systèmes de fils de chaîne (120, 124, 128) tissés chaque fois avec les fils de trame côté papier (116) et/ou les fils de trame côté courroie (118), dans lequel un groupe de lames est associé à chaque système de fils de chaîne (120, 124, 128), au moyen duquel les fils de chaîne des systèmes de fils de chaîne (120, 124, 128) doivent se déplacer pour former la foule, dans lequel le procédé comprend la production d'un schéma de rentrage avec un rapport de rentrage pour les systèmes de fils de chaîne (120, 124, 128), rapport de rentrage pour lequel il est prévu un sous-rapport se répétant dans le rapport de rentrage pour au moins un des systèmes de fils de chaîne (120, 124, 128).
  2. Procédé selon la revendication 1, caractérisé en ce qu'il n'est pas prévu de sous-rapport pour le rapport de rentrage pour au moins un système de fils de chaîne (124).
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce qu'il est prévu chaque fois un sous-rapport se répétant pour le rapport de rentrage pour au moins deux systèmes de fils de chaîne et en ce que les nombres de répétitions des sous-rapports dans le rapport de rentrage diffèrent entre eux.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que, dans le rapport de rentrage, au moins le groupe de lames associé à un système de fils de chaîne (120, 124, 128) comprend des lames se succédant immédiatement dans la direction de la chaîne.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que, dans le rapport de rentrage, au moins les groupes de lames associés à deux systèmes de fils de chaîne différents (120, 124, 128), sont emboîtés l'un dans l'autre dans la direction de la chaîne.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que, dans le rapport de rentrage, au moins une lame est associée à deux fils de chaîne du même système de fils de chaîne (120, 124, 128).
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la toile de machine à papier (10) est tissée sur une machine de tissage avec au moins 25 lames, de préférence avec au moins 27 lames, et de préférence encore avec au moins 30 lames.
EP06116125A 2005-07-23 2006-06-27 Procédé de fabrication d'une toile de machine à papier Active EP1746202B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005034453A DE102005034453A1 (de) 2005-07-23 2005-07-23 Verfahren zur Herstellung eines Papiermaschinensiebes

Publications (2)

Publication Number Publication Date
EP1746202A1 EP1746202A1 (fr) 2007-01-24
EP1746202B1 true EP1746202B1 (fr) 2009-06-17

Family

ID=37075884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06116125A Active EP1746202B1 (fr) 2005-07-23 2006-06-27 Procédé de fabrication d'une toile de machine à papier

Country Status (5)

Country Link
US (1) US7513276B2 (fr)
EP (1) EP1746202B1 (fr)
AT (1) ATE434078T1 (fr)
DE (2) DE102005034453A1 (fr)
ES (1) ES2326683T3 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005028254A1 (de) * 2005-06-17 2006-12-21 Voith Patent Gmbh Gewebeband
DE102005034453A1 (de) * 2005-07-23 2007-01-25 Voith Patent Gmbh Verfahren zur Herstellung eines Papiermaschinensiebes
DE102005060299A1 (de) * 2005-12-16 2007-06-21 Voith Patent Gmbh Papiermaschinensieb
DE102005060301A1 (de) 2005-12-16 2007-06-21 Voith Patent Gmbh Papiermaschinenbespannung
CN102660828B (zh) * 2009-12-17 2015-02-04 财团法人纺织产业综合研究所 立体梭织织物
EP2547332B1 (fr) * 2010-03-16 2018-08-29 Titan Pharmaceuticals, Inc. Dispositifs implantables hétérogènes pour la délivrance de médicaments
DE102010026609B3 (de) * 2010-07-09 2011-11-17 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Verfahren und Vorrichtung zur Webmusterbildung bei Geweben mit Zusatzschusseffekten
DE102010034969B3 (de) 2010-08-20 2011-11-03 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Webblatt und Webmaschine zur Webmusterbildung bei Geweben mit Zusatzmustereffekten
EP2698458B1 (fr) * 2011-04-11 2024-06-26 Nippon Filcon Co., Ltd. Armure multicouche pour tissu non tissé
DE202014001502U1 (de) * 2013-03-01 2014-03-21 Voith Patent Gmbh Gewobenes Sieb mit flachen Kettfäden

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Publication number Priority date Publication date Assignee Title
US1826654A (en) * 1927-03-04 1931-10-06 Deboutteville Marcel Delamare Process for weaving
US2792851A (en) * 1955-10-27 1957-05-21 Pepperell Mfg Company Blanket cloth and method of making the same
DE3635000A1 (de) * 1986-10-14 1988-04-21 Oberdorfer Fa F Doppellagiges papiermaschinensieb mit grob strukturierter laufseite und fein strukturierter papierseite
DE4229828C2 (de) * 1992-09-07 1996-07-04 Kufferath Andreas Gmbh Papiermaschinensieb in Form eines Verbundgewebes
US6207598B1 (en) * 1998-07-16 2001-03-27 Astenjohnson, Inc. Soft-faced dryer fabric
USH1974H1 (en) * 1998-08-11 2001-07-03 Astenjohnson, Inc. Woven loop press base fabric having high density top layer
US5988229A (en) * 1998-08-20 1999-11-23 Wangner Systems Corporation Papermakers forming fabric with weft dominated paper support surface
US6237644B1 (en) * 1998-09-01 2001-05-29 Stewart Lister Hay Tissue forming fabrics
US6148869A (en) * 1998-12-17 2000-11-21 Wangner Systems Corporation Dual layer papermaking fabric formed in a balanced weave
US6349749B1 (en) * 1999-07-09 2002-02-26 Geschmay Corp. Woven fabric
US6276402B1 (en) * 1999-08-23 2001-08-21 Astenjohnson, Inc. Multilayer papermakers fabric
US6413377B1 (en) * 1999-11-09 2002-07-02 Astenjohnson, Inc. Double layer papermaking forming fabric
US6227256B1 (en) * 1999-12-13 2001-05-08 Albany International Corp. Multi-layer papermaking fabric having long weft floats on its support and machine surfaces
GB0005344D0 (en) * 2000-03-06 2000-04-26 Stone Richard Forming fabric with machine side layer weft binder yarns
DE10030650C1 (de) 2000-06-29 2002-05-29 Kufferath Andreas Gmbh Papiermaschinensieb
EP1404916B1 (fr) * 2001-07-09 2009-01-28 Astenjohnson, Inc. Toile multicouche pour sechoir a air traversant
GB0128407D0 (en) * 2001-11-27 2002-01-16 Johnson Dale B High support double layer forming fabric
US6827821B2 (en) * 2002-12-02 2004-12-07 Voith Fabrics Heidenheim Gmbh & Co. Kg High permeability, multi-layer woven members employing machine direction binder yarns for use in papermaking machine
DE102005034453A1 (de) * 2005-07-23 2007-01-25 Voith Patent Gmbh Verfahren zur Herstellung eines Papiermaschinensiebes

Also Published As

Publication number Publication date
US20070028992A1 (en) 2007-02-08
DE502006003973D1 (de) 2009-07-30
EP1746202A1 (fr) 2007-01-24
ES2326683T3 (es) 2009-10-16
DE102005034453A1 (de) 2007-01-25
US7513276B2 (en) 2009-04-07
ATE434078T1 (de) 2009-07-15

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