EP1619296B1 - Process for manufacturing graphical paper - Google Patents

Process for manufacturing graphical paper Download PDF

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Publication number
EP1619296B1
EP1619296B1 EP05104997A EP05104997A EP1619296B1 EP 1619296 B1 EP1619296 B1 EP 1619296B1 EP 05104997 A EP05104997 A EP 05104997A EP 05104997 A EP05104997 A EP 05104997A EP 1619296 B1 EP1619296 B1 EP 1619296B1
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Prior art keywords
weave
weft
warp
threads
weaving
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German (de)
French (fr)
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EP1619296A3 (en
EP1619296A2 (en
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Arved Westerkamp
Johann Boeck
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Voith Patent GmbH
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Voith Patent GmbH
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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
    • 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

Definitions

  • the invention relates to a process for the production of graphic paper.
  • the properties of wear volume in particular for use in the forming section, the properties of wear volume (increase in transit time), marking tendency, printability, stability and thickness determine the suitability for concrete different purposes.
  • these properties are determined by the choice of bindings used.
  • a method of producing graphic paper in which the graphic paper is produced at a machine speed of greater than 1200 m / min and a forming fabric having a thickness of less than 0.75 mm is used, the forming fabric comprising warp threads and weft threads has, which under formation of a Web pattern are interwoven, wherein the weave pattern is writable by juxtaposition of the smallest repeating units and wherein the weave per repeat unit has at least 26 warps and is formed alone or in combination by: at least one textile plain weave and / or at least one derivative of a textile plain weave and / or at least an extension of a basic textile bond.
  • the above-mentioned forming fabric is used for the production of graphic paper because markings adversely affect the appearance of paper and its printability in graphic papers and the marking tendency is greatly reduced by the above-mentioned forming fabric, for example, due to its almost free and irregular distribution of its setting points ,
  • a 30-strand Kettrapport is formed by combining a 10-strand satin weave, a 10-strand weft-sided wide-weave weave, and a 10-strand cross-twill weave.
  • the% ratio of minimum chain elevation points to the number of possible binding points is between 100% and 2% for a shank number range of a minimum of 2 to a maximum of 56 shanks.
  • The% ratio of minimum possible chaining points to the number of maximum chaining points within a repeat unit is also within this range.
  • the o.g. said difference value is achieved by a weave pattern which has at least 26 warp threads per repeat unit.
  • An extension of a basic textile weave is created by adding one or more warp headers to the already existing binding points of a weft weave. This can be done in the longitudinal or transverse direction, up, down, right or left. The same bonds arise when points are taken away from a chain-sided basic weave. This binding change is also referred to as reinforcement, while this process must not be confused with the addition of other thread systems.
  • the plain weave can not be extended. Extensions are based on the twill weave as a plain weave, a weft-side Breitgratgroper K2 / 4Z or a kett researcher Breitgratgroper K4 / 2Z.
  • a basic textile weave can also be changed via leads.
  • the weave pattern per repeat unit is formed by at least 28 or 30 or 40 or 50 or more warp threads.
  • the basic textile bindings are a plain weave or a twill weave or an atlas weave.
  • the weave pattern it is possible for the weave pattern to be formed by a warp layer and a weft layer or by a warp layer and two weft layers.
  • the weave pattern is formed by two warp layers and one weft layer or by two warp layers and two weft layers.
  • the weave pattern is formed by three warp layers and two weft layers.
  • a preferred embodiment of the invention therefore provides that the weave pattern by weaving a paper-side warp with a paper-side weft layer and by weaving a machine-side warp with a machine-side weft position and by interweaving running in warp or weft binding threads with paper-side weft or warp under Formation of connection points and with machine-side shot or Warp threads is formed to form setting points.
  • Such paper machine screens are referred to as double-layer screens.
  • the binding threads are interwoven with the paper-side weft or warp threads in such a way that the pattern formed by interweaving of paper-side warp and weft threads is continued by them.
  • Such sieves are referred to as SSB sieves.
  • setting points provide a significant contribution to the tendency to mark in SSB sieves.
  • markings are particularly visible when they are arranged in a regular structure. Due to the high number of warp threads and the associated almost free possibility of weaves a nearly free and irregular arrangement of tying and Abbindeeng is possible, whereby the tendency to mark can be significantly reduced.
  • a marking tendency of the forming fabric becomes highly visible, since a marking often continues over the entire width of the paper web. Due to the almost free possibility of the combination of fabric weaves and the possibility of almost free and irregular arrangement of setting or tethering points, it is possible to design the forming fabric according to the invention preferably in a width of greater than 8 meters. Accordingly, a preferred embodiment of the invention provides that the forming fabric has a width greater than 8 meters.
  • Matrix 1 V n plain weave extension derivation Combination extension / derivation Binding style paper side X Binding type machine side X Tie Point Tie Shot X
  • the paper-side weave structure is formed by a plain weave, for example by a plain weave.
  • the machine-side weave structure is also formed by a plain weave, for example, by an atlas weave.
  • the weave pattern of the bonding points is formed by a combination of ground weave, its extension and its derivation.
  • Matrix 2 V n plain weave extension derivation Combination extension / derivation Binding style paper side X Binding type machine side X Tie Point Tie Shot X
  • the paper-side weave structure is formed by a plain weave, for example by a plain weave.
  • the machine-side weave structure is formed by the extension of a plain weave, for example, by an 8-tie weft-side double satin weave.
  • the weaving pattern of the bonding points becomes a combination of ground weave, its extension and its derivation, such as from a 5-strand atlas binding with slope 2, a 5-strand atlas binding with slope 3 and a modified 5-stranded cross twill, formed.

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  • Paper (AREA)

Abstract

The belt for a papermaking machine, especially at the stage where the pulp suspension is converted into a wet web, has an arrangement of warps and wefts forming a woven pattern. The woven pattern has at least 26 warps in each repeat. To give the structured surface on the side against the paper and the side against the machine, the warps are used alone or in combinations to give at least one basic textile weave and/or a deviation from a textile basic weave and/or an extension of a basic textile weave. The weaves are a plain fabric in tabby weave, a twill or a satin weave.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von graphischem Papier.The invention relates to a process for the production of graphic paper.

Bei Papiermaschinenbespannungen insbesondere für den Einsatz in der Formierpartie wird durch die Eigenschaften Verschleißvolumen (Erhöhung der Laufzeit), Markierungsneigung, Bedruckbarkeit, Stabilität und Dicke die Eignung für konkrete unterschiedliche Einsatzzwecke festgelegt. Bei gewobenen Papiermaschinenbespannungen werden diese Eigenschaften durch die Auswahl der verwendeten Bindungen festgelegt.In the case of papermachine clothing, in particular for use in the forming section, the properties of wear volume (increase in transit time), marking tendency, printability, stability and thickness determine the suitability for concrete different purposes. For woven paper machine clothing, these properties are determined by the choice of bindings used.

Insbesondere aufgrund von gestiegenen Kundenanforderungen bzgl. Papierqualität und der Tendenz zu immer schneller laufenden und breiteren Papiermaschinen besteht für Papiermaschinenbespannungen der kommenden Generation zunehmend die Anforderung, diese flexibel an den jeweiligen Einsatzzweck anpassen zu können.In particular, due to increased customer requirements regarding paper quality and the tendency to ever faster running and wider paper machines for paper machine clothing of the coming generation increasingly the requirement to be able to adapt flexibly to the respective application.

Aus der US 5,826,627 und der US 6,202,705 sind Formiersiebe bekannt, deren Webmuster aus 32 bzw. 36 Schäften gebildet sind.From the US 5,826,627 and the US 6,202,705 Forming screens are known whose weave patterns are formed from 32 or 36 shafts.

Es ist die Aufgabe der vorliegenden Erfindung ein verbessertes Verfahren zur Herstellung von graphischen Papieren vorzuschlagen.It is the object of the present invention to propose an improved process for the production of graphic papers.

Diese Aufgabe wird durch ein Verfahren nach dem Patentanspruch 1 gelöst.This object is achieved by a method according to claim 1.

Gemäß Patentanspruch 1 wird ein Verfahren zur Herstellung von graphischem Papier vorgeschlagen, bei dem das graphische Papier bei einer Maschinengeschwindigkeit von größer 1200 m/min hergestellt wird und ein Formiersieb mit einer Dicke von kleiner 0,75 mm verwendet wird, wobei das Formiersieb Kettfäden und Schussfäden hat, welche unter Bildung eines Webmusters miteinander verwoben sind, wobei das Webmuster durch Aneinanderreihung von kleinsten Wiederholeinheiten beschreibbar ist und wobei das Webmuster pro Wiederholeinheit zumindest 26 Kettfäden aufweist und allein oder in Kombination gebildet wird durch: zumindest eine textile Grundbindung und / oder zumindest eine Ableitung einer textilen Grundbindung und / oder zumindest eine Erweiterung einer textilen Grundbindung.According to claim 1 there is proposed a method of producing graphic paper in which the graphic paper is produced at a machine speed of greater than 1200 m / min and a forming fabric having a thickness of less than 0.75 mm is used, the forming fabric comprising warp threads and weft threads has, which under formation of a Web pattern are interwoven, wherein the weave pattern is writable by juxtaposition of the smallest repeating units and wherein the weave per repeat unit has at least 26 warps and is formed alone or in combination by: at least one textile plain weave and / or at least one derivative of a textile plain weave and / or at least an extension of a basic textile bond.

Die Verwendung des oben genannten Siebs wirkt sich bei hohen Geschwindigkeiten positiv auf die Markierungsneigung aus, da die Entwässerungszeiten kürzer werden und damit auch die für die Entwässerung notwendigen Entwässerungsdrücke. Aus diesem Grund ist es vorteilhaft, eine möglichst "inhomogene" Gleichmäßigkeit (darunter ist bspw. eine unregelmäßige, d.h. keinem regelmäßigen Muster folgende Verteilung der Anbinde- oder Abbindepunkte zu sehen, welche keine Konzentrationsstellen aufweist) im Gewebe zu erzielen um die Markierung zu reduzieren.The use of the above-mentioned sieve has a positive effect on the marking tendency at high speeds, since the drainage times become shorter and thus also the drainage pressures necessary for the drainage. For this reason, it is advantageous to achieve as "inhomogeneous" uniformity as possible (which, for example, means an irregular, i.e., no regular pattern, distribution of the tying or setting points which does not have concentration points) in the tissue in order to reduce the marking.

Das oben genannte Formiersieb wird zur Herstellung von graphischem Papier verwendet, da sich bei graphischen Papieren Markierungen negativ auf das Erscheinungsbild des Papiers und dessen Bedruckbarkeit auswirken und durch das oben genannte Formiersieb bspw. aufgrund seiner nahezu freien und unregelmäßigen Verteilung seiner Abbindepunkte die Markierungsneigung stark reduziert ist.The above-mentioned forming fabric is used for the production of graphic paper because markings adversely affect the appearance of paper and its printability in graphic papers and the marking tendency is greatly reduced by the above-mentioned forming fabric, for example, due to its almost free and irregular distribution of its setting points ,

Die bisherigen Limitierungen, welche über die fehlende Anzahl von Kettfäden existent waren und welche über "Kompromiss beladene" Bindungen kompensiert wurden können nun über eine anwendungsspezifische Kombination von Grundbindungen und Erweiterungen / Ableitungen von Grundbindungen gelöst werden. Dabei ermöglicht die hohe Anzahl von Kettfäden (≥ 26 Schäfte; für die weitere Diskussion werden die Begriffe Schaftzahl und Anzahl der Kettfäden gleichbedeutend verwendet) eine nahezu freie Kombination der Bindungen untereinander.The previous limitations, which existed on the missing number of warp threads and which were compensated by "compromise loaded" bindings can now be solved by an application-specific combination of ground bindings and extensions / derivations of ground bindings. The high number of warp yarns (≥ 26 shanks, for the sake of further discussion the terms shank number and number of warp threads used in the same way) allows a nearly free combination of the bonds among themselves.

Hierbei können sowohl in einer Wiederholeinheit Grundbindungen und Erweiterungen / Ableitungen derselben Grundbindung miteinander kombiniert werden, d.h. bspw. 30-schäftiger Kettrapport mit 15-schäftige Atlasbindung kombiniert mit einer 15-schäftigen DoppelatlasbindungHere, in a repeating unit, basic bonds and extensions / derivatives of the same basic bond can be combined with each other, i. eg 30-strand warp repeat with 15-strand satin weave combined with a 15-strand double satin weave

Es sind aber auch Mischformen denkbar. So wird bspw. ein 30-schäftiger Kettrapport durch Kombination einer 10-schäftigen Atlasbindung, einer 10-schäftigen schussseitigen Breitgratköperbindung und einer 10-schäftigen Kreuzköperbindung gebildet.However, mixed forms are also conceivable. Thus, for example, a 30-strand Kettrapport is formed by combining a 10-strand satin weave, a 10-strand weft-sided wide-weave weave, and a 10-strand cross-twill weave.

Zur Erläuterung des Vorteils der nahezu freien Kombinationsmöglichkeiten von Bindungen soll folgendes Beispiel dienen: In einer Wiederholeinheit liegt das %-Verhältnis minimaler Ketthebungspunkte zur Anzahl möglicher Bindepunkte bei einer Schaftanzahlsspanne von minimal 2 bis maximal 56 Schäften zwischen 100% und 2%. Das %-Verhältnis minimal möglicher Ketthebungspunkte zu Anzahl maximaler Ketthebungspunkte liegt innerhalb einer Wiederholeinheit ebenfalls in dieser Spanne.To illustrate the advantage of the almost free combination possibilities of bonds, the following example is to serve: In a repeating unit, the% ratio of minimum chain elevation points to the number of possible binding points is between 100% and 2% for a shank number range of a minimum of 2 to a maximum of 56 shanks. The% ratio of minimum possible chaining points to the number of maximum chaining points within a repeat unit is also within this range.

Wird die Differenzgröße zwischen der minimalen Anzahl von Ketthebungspunkten zu maximaler Anzahl von Ketthebungspunkten und minimalen Anzahl von Ketthebungspunkten zur Anzahl möglicher Bindepunkte gebildet, so ergibt sich, dass sich ab einem Differenzwert von weniger als 0,15% ein optimales Verhältnis im Bezug auf die Verteilung der Einzelpunkte und somit möglicher Markierneigung des Siebes im Papier ergibt.If the difference in size between the minimum number of chain elevation points to the maximum number of chain elevation points and a minimum number of chain elevation points to the number of possible binding points is formed, it follows that an optimum ratio in relation to a difference value of less than 0.15% on the distribution of the individual points and thus possible Markierneigung the screen in the paper results.

Der o.g. genannte Differenzwert wird durch ein Webmuster erreicht, welches pro Wiederholeinheit zumindest 26 Kettfäden aufweist.The o.g. said difference value is achieved by a weave pattern which has at least 26 warp threads per repeat unit.

Eine Erweiterung einer textilen Grundbindung entsteht, indem man den bereits vorhandenen Bindepunkten einer Schussbindung jeweils einzelne oder auch mehrere Ketthebungen hinzufügt. Dieses Ansetzen kann in Längs- oder Querrichtung, nach oben, unten, rechts oder links erfolgen. Die gleichen Bindungen entstehen, wenn von einer kettseitigen Grundbindung Punkte weggenommen werden. Diese bindungstechnische Veränderung bezeichnet man auch als Verstärkung, dabei darf dieser Vorgang nicht mit dem Hinzufügen weiterer Fadensysteme verwechselt werden. Die Leinwandbindung kann nicht erweitert werden. Bsp. für Erweiterungen sind, basierend auf der Köperbindung als Grundbindung ein schussseitiger Breitgratköper K2/4Z oder ein kettseitiger Breitgratköper K4/2Z.An extension of a basic textile weave is created by adding one or more warp headers to the already existing binding points of a weft weave. This can be done in the longitudinal or transverse direction, up, down, right or left. The same bonds arise when points are taken away from a chain-sided basic weave. This binding change is also referred to as reinforcement, while this process must not be confused with the addition of other thread systems. The plain weave can not be extended. Extensions are based on the twill weave as a plain weave, a weft-side Breitgratköper K2 / 4Z or a kettseitiger Breitgratköper K4 / 2Z.

Eine textile Grundbindung kann ebenso über Ableitungen verändert werden. Es gibt beispielsweise die Möglichkeit der Versatzänderung, der Vervielfachung von einzelnen Fäden oder Fadengruppen, der Spiegelung oder der Verschiebung einzelner Bindungspassagen.A basic textile weave can also be changed via leads. For example, there is the possibility of changing the offset, multiplying individual threads or thread groups, mirroring or shifting individual binding passages.

Normalerweise vergrößert sich hierdurch der Rapport, im Kettrapport befinden sich dann mehrere gleich bindende Fäden, die entsprechend auch auf dieselben Schäfte genommen werden können. Damit entstehen gemusterte Schafteinzüge. Bsp. für Ableitungen sind, basierend auf der Leinwandbindung als Grundbindung ein glatter Querrips RQ2/2 oder ein gemischter Querrips RQ3/2/1/3/2/1.Normally, this increases the repeat, in Kettrapport there are then several equally binding threads that can be taken on the same shafts accordingly. This creates patterned Schafteinzüge. For example, for derivations, based on the plain weave plain weave, a smooth cross-rib RQ2 / 2 or a mixed cross-rib RQ3 / 2/1/3/2/1.

Um die Variationsmöglichkeit weiter zu erhöhen und somit die Möglichkeit der nahezu freien Kombination von Gewebebindungen entsprechend den Anforderungen des Kunden zu ermöglichen, sieht eine besonders bevorzugte Ausführungsform der Erfindung vor, dass das Webmuster pro Wiederholeinheit durch zumindest 28 oder 30 oder 40 oder 50 oder mehr Kettfäden gebildet wird.In order to further increase the possibility of variation and thus to enable the possibility of almost free combination of weave bindings according to the requirements of the customer, sees a particularly preferred Embodiment of the invention that the weave pattern per repeat unit is formed by at least 28 or 30 or 40 or 50 or more warp threads.

Bei den textilen Grundbindungen handelt es sich um eine Leinwandbindung oder eine Köperbindung oder eine Atlasbindung.The basic textile bindings are a plain weave or a twill weave or an atlas weave.

Aus den o.g. Grundbindungen und entsprechenden Erweiterungen bzw. Ableitungen (von denen nur einige zur Erläuterung der Prinzipien beispielhaft gezeigt werden) können nun die den Anforderungen des Kunden entsprechenden Gewebebindungen kombiniert werden.From the o.g. Basic bindings and corresponding extensions or derivations (only a few of which are shown by way of example to explain the principles) can now be combined with the tissue bindings corresponding to the requirements of the customer.

Hierbei ist es sowohl möglich, dass das Webmuster durch eine Kettlage und eine Schusslage oder durch eine Kettlage und zwei Schusslagen gebildet wird.In this case, it is possible for the weave pattern to be formed by a warp layer and a weft layer or by a warp layer and two weft layers.

Des weiteren ist es möglich, dass das Webmuster durch zwei Kettlagen und eine Schusslage oder durch zwei Kettlagen und zwei Schusslagen gebildet wird.Furthermore, it is possible that the weave pattern is formed by two warp layers and one weft layer or by two warp layers and two weft layers.

Darüber hinaus ist es möglich, dass das Webmuster durch drei Kettlagen und zwei Schusslagen gebildet wird.In addition, it is possible that the weave pattern is formed by three warp layers and two weft layers.

Da an die Papierseite einer Papiermaschinenbespannung in Bezug zur Maschinenseite unterschiedliche Anforderungen gestellt werden, - auf der Papierseite wird bspw. bei einem Formiersieb die Faserstoffbahn gebildet, wohingegen an die Maschinenseite insbesondere hohe Anforderungen an die Verschleißfestigkeit gestellt werden. Eine bevorzugte Ausführungsform der Erfindung sieht deshalb vor, dass das Webmuster durch Verweben einer papierseitigen Kettlage mit einer papierseitigen Schusslage und durch Verweben einer maschinenseitigen Kettlage mit einer maschinenseitigen Schusslage sowie durch Verweben von in Kett- oder Schussrichtung verlaufenden Bindefäden mit papierseitigen Schuss- bzw. Kettfäden unter Bildung von Anbindepunkten und mit maschinenseitigen Schuss- bzw. Kettfäden unter Bildung von Abbindepunkten gebildet wird. Solche Papiermaschinensiebe werden als zweilagige Siebe bezeichnet.Since different demands are placed on the paper side of a papermachine fabric in relation to the machine side, the fibrous web is formed on the paper side, for example in a forming fabric, whereas particularly high demands are placed on the wear resistance on the machine side. A preferred embodiment of the invention therefore provides that the weave pattern by weaving a paper-side warp with a paper-side weft layer and by weaving a machine-side warp with a machine-side weft position and by interweaving running in warp or weft binding threads with paper-side weft or warp under Formation of connection points and with machine-side shot or Warp threads is formed to form setting points. Such paper machine screens are referred to as double-layer screens.

Insbesondere zur Verbesserung der Markierungsneigung werden die Bindefäden, abhängig davon ob diese in Kett- oder Schussrichtung verlaufen, derart mit den papierseitigen Schuss- oder Kettfäden verwoben, dass durch diese das durch Verweben von papierseitigen Kett- und Schussfäden gebildete Muster fortgesetzt wird. Solche Siebe werden als SSB Siebe bezeichnet.In particular, in order to improve the marking tendency, the binding threads, depending on whether they are in the warp or weft direction, are interwoven with the paper-side weft or warp threads in such a way that the pattern formed by interweaving of paper-side warp and weft threads is continued by them. Such sieves are referred to as SSB sieves.

Insbesondere Abbindepunkte liefern bei SSB Sieben einen wesentlichen Beitrag zur Markierungsneigung. Hierbei werden Markierungen insbesondere dann sichtbar, wenn diese in einer regelmäßigen Struktur angeordnet sind. Durch die hohe Anzahl von Kettfäden und die damit verbundene nahezu freie Möglichkeit der Gewebebindungen ist auch eine nahezu freie und unregelmäßige Anordnung der Anbinde- und Abbindepunkte möglich, wodurch die Markierungsneigung erheblich reduziert werden kann.In particular, setting points provide a significant contribution to the tendency to mark in SSB sieves. In this case, markings are particularly visible when they are arranged in a regular structure. Due to the high number of warp threads and the associated almost free possibility of weaves a nearly free and irregular arrangement of tying and Abbindepunkte is possible, whereby the tendency to mark can be significantly reduced.

Bei zweilagigen Papiermaschinenbespannungen, mit d.h. bspw. zwei Kett- und zwei Schusslagen, mit Bindefäden und einem papierseitigen Webmuster und einem maschinenseitigen Webmuster sind folgende Möglichkeiten des Aufbaus denkbar:

  • das durch Verweben der papierseitigen Kett- und Schussfäden gebildete papierseitige Webmuster wird allein oder in Kombination gebildet durch: zumindest eine textile Grundbindung und / oder zumindest eine Ableitung einer textilen Grundbindung und / oder zumindest eine Erweiterung einer textilen Grundbindung,
  • das durch Verweben der maschinenseitigen Kett- und Schussfäden gebildete maschinenseitige Webmuster wird allein oder in Kombination gebildet durch: zumindest eine textile Grundbindung und / oder zumindest eine Ableitung einer textilen Grundbindung und / oder zumindest eine Erweiterung einer textilen Grundbindung,
  • das durch Verweben der Bindefäden mit den papierseitigen Kett- oder Schussfäden gebildete Muster der Anbindepunkte wird allein oder in Kombination gebildet durch: zumindest eine textile Grundbindung und / oder zumindest eine Ableitung einer textilen Grundbindung und / oder zumindest eine Erweiterung einer textilen Grundbindung,
  • das durch Verweben der Bindefäden mit den maschinenseitigen Kett- oder Schussfäden gebildete Muster der Abbindepunkte wird allein oder in Kombination gebildet durch: zumindest eine textile Grundbindung und / oder zumindest eine Ableitung einer textilen Grundbindung und / oder zumindest eine Erweiterung einer textilen Grundbindung.
In the case of two-ply papermachine clothing, ie with, for example, two warp and two weft plies, with binding threads and a paper-side weaving pattern and a machine-side weaving pattern, the following possibilities of construction are conceivable:
  • the paper-side weave pattern formed by interweaving the paper-side warp and weft threads is formed alone or in combination by: at least one textile plain weave and / or at least one derivative of a textile plain weave and / or at least one extension of a plain weave weave;
  • the machine-side weave pattern formed by interweaving the machine-side warp and weft threads is formed alone or in combination by: at least one textile plain weave and / or at least one derivative of a textile plain weave and / or at least one extension of a plain weave weave;
  • the pattern of attachment points formed by interweaving the binding threads with the paper-side warp or weft threads is formed alone or in combination by: at least one textile base weave and / or at least one derivative of a basic textile weave and / or at least one extension of a textile weave,
  • the pattern of bonding points formed by interweaving the binding threads with the machine-side warp or weft threads is formed alone or in combination by: at least one textile base weave and / or at least one derivative of a textile weave and / or at least one extension of a textile weave.

Insbesondere bei breiten Papierbahnen wird eine Markierungsneigung des Formiersiebs stark sichtbar, da sich eine Markierung oftmals über die gesamte Breite der Papierbahn fortsetzt. Durch die nahezu freie Möglichkeit der Kombination von Gewebebindungen und die Möglichkeit der nahezu freien und unregelmäßigen Anordnung der Abbinde- bzw. Anbindepunkte ist es möglich das erfindungsgemäße Formiersieb vorzugsweise in einer Breite von größer als 8 Meter auszulegen. Demzufolge sieht eine bevorzugte Ausführungsform der Erfindung vor, dass das Formiersieb eine Breite von größer als 8 Meter hat.Particularly in the case of wide paper webs, a marking tendency of the forming fabric becomes highly visible, since a marking often continues over the entire width of the paper web. Due to the almost free possibility of the combination of fabric weaves and the possibility of almost free and irregular arrangement of setting or tethering points, it is possible to design the forming fabric according to the invention preferably in a width of greater than 8 meters. Accordingly, a preferred embodiment of the invention provides that the forming fabric has a width greater than 8 meters.

Die Erfindung soll nachfolgend anhand zweier Matrizen erläutert werden, welche bevorzugte Ausführungsformen von Gewebebindungen für Formiersiebe mit zwei Kett- und zwei Schusslagen sowie mit Bindefäden zeigen. Die Matrizen 1 und 2 zeigen die Möglichkeit der Verwendung von Grundbindung, Ableitung, Erweiterungen oder Kombination derselben. Matrix 1: Vn Grundbindung Erweiterung Ableitung Kombination Erweiterung/Ableitung Bindungsart Papierseite X Bindungsart Maschinenseite X Abbindepunkt Bindeschuss X The invention will be explained below with reference to two matrices which show preferred embodiments of fabric bindings for forming fabrics with two warp and two weft layers and with binding threads. Matrices 1 and 2 show the possibility of using plain weave, derivative, extensions or combinations thereof. Matrix 1: V n plain weave extension derivation Combination extension / derivation Binding style paper side X Binding type machine side X Tie Point Tie Shot X

Gemäß Matrix 1 wird die papierseitige Webstruktur durch eine Grundbindung, bspw. durch eine Leinwandbindung gebildet. Des weiteren wird die maschinenseitige Webstruktur ebenfalls durch eine Grundbindung bspw. durch eine Atlasbindung gebildet. Um eine nahezu unregelmäßige Verteilung der Abbindepunkte zu erreichen, wird das Webmuster der Abbindepunkte durch eine Kombination aus Grundbindung, deren Erweiterung und deren Ableitung gebildet. Matrix 2: Vn Grundbindung Erweiterung Ableitung Kombination Erweiterung / Ableitung Bindungsart Papierseite X Bindungsart Maschinenseite X Abbindepunkt Bindeschuss X According to matrix 1, the paper-side weave structure is formed by a plain weave, for example by a plain weave. Furthermore, the machine-side weave structure is also formed by a plain weave, for example, by an atlas weave. In order to achieve an almost irregular distribution of the bonding points, the weave pattern of the bonding points is formed by a combination of ground weave, its extension and its derivation. Matrix 2: V n plain weave extension derivation Combination extension / derivation Binding style paper side X Binding type machine side X Tie Point Tie Shot X

Gemäß Matrix 2 wird die papierseitige Webstruktur durch eine Grundbindung, bspw. durch eine Leinwandbindung gebildet. Des weiteren wird die maschinenseitige Webstruktur durch die Erweiterung einer Grundbindung bspw. durch eine 8-bindige schussseitige Doppelatlasbindung gebildet. Um eine nahezu unregelmäßige Verteilung der Abbindepunkte zu erreichen, wird das Webmuster der Abbindepunkte durch eine Kombination aus Grundbindung, deren Erweiterung und deren Ableitung, wie bspw. aus einer 5-schäftigen Atlasbindung mit Steigung 2, einer 5-schäftigen Atlasbindung mit Steigung 3 und einem modifizierten 5-schäftigen Kreuzköper, gebildet.According to matrix 2, the paper-side weave structure is formed by a plain weave, for example by a plain weave. Furthermore, the machine-side weave structure is formed by the extension of a plain weave, for example, by an 8-tie weft-side double satin weave. In order to achieve an almost irregular distribution of the bonding points, the weaving pattern of the bonding points becomes a combination of ground weave, its extension and its derivation, such as from a 5-strand atlas binding with slope 2, a 5-strand atlas binding with slope 3 and a modified 5-stranded cross twill, formed.

Es ist selbstverständlich, dass die Erfindung nicht auf die gezeigten Ausführungsformen beschränkt ist, sondern von einem Fachmann in vielfältiger Weise abgeändert und ergänzt werden kann.It is understood that the invention is not limited to the embodiments shown, but may be modified and supplemented by a person skilled in many ways.

Claims (13)

  1. Process for the production of graphic paper, in which the graphic paper is produced at a machine speed of more than 1200 m/min, preferably of more than 1500 m/min, and a forming fabric is used which has a thickness of less than 0.75 mm, preferably of less than 0.7 mm, and which comprises warp threads and weft threads, which are interwoven, forming a weaving pattern, it being possible for the weaving pattern to be described by lining up extremely small repeat units and the weaving pattern per repeat unit having at least 26 warp threads and, on its own or in combination, being formed by: at least one basic textile weave and/or at least one derivative of a basic textile weave and/or at least one extension of a basic textile weave.
  2. Process according to Claim 1, characterized in that the weaving pattern in the repeat unit is formed by at least 28 or 30 or 40 or 50 or more warp threads.
  3. Process according to Claim 1 or 2, characterized in that the basic textile weaves are a plain weave or a twill weave or a satin weave.
  4. Process according to one of Claims 1 to 3, characterized in that the weaving pattern is formed by one warp layer and one weft layer or two weft layers.
  5. Process according to one of Claims 1 to 3, characterized in that the weaving pattern is formed by two warp layers and one weft layer or two weft layers.
  6. Process according to one of Claims 1 to 3, characterized in that the weaving pattern is formed by three warp layers and two weft layers.
  7. Process according to either of Claims 5 and 6, characterized in that the weaving pattern is formed by weaving a paper-side warp layer with a paper-side weft layer and by weaving a machine-side warp layer with a machine-side weft layer and by weaving binding threads running in the warp or weft direction with paper-side weft or warp threads, forming covering binding points, and with machine-side weft or warp threads, forming supporting binding points.
  8. Process according to Claim 7, characterized in that the pattern formed by weaving paper-side warp and weft threads is continued by weaving the binding threads with the paper-side warp or weft threads.
  9. Process according to either of Claims 7 and 8, characterized in that the pattern formed by weaving the paper-side warp and weft threads is formed on its own or in combination by: at least one basic textile weave and/or at least one derivative of a basic textile weave and/or at least one extension of a basic textile weave.
  10. Process according to one of Claims 7 to 9, characterized in that the pattern formed by weaving the machine-side warp and weft threads is formed on its own or in combination by: at least one basic textile weave and/or at least one derivative of a basic textile weave and/or at least one extension of a basic textile weave.
  11. Process according to one of Claims 7 to 10, characterized in that the pattern formed by weaving the binding threads with the paper-side warp or weft threads is formed on its own or in combination by: at least one basic textile weave and/or at least one derivative of a basic textile weave and/or at least one extension of a basic textile weave.
  12. Process according to one of Claims 7 to 11, characterized in that the pattern formed by weaving the binding threads with the machine-side warp or weft threads is formed on its own or in combination by: at least one basic textile weave and/or at least one derivative of a basic textile weave and/or at least one extension of a basic textile weave.
  13. Process according to one of Claims 1 to 12, characterized in that the forming fabric has a width of greater than 8 meters.
EP05104997A 2004-07-22 2005-06-08 Process for manufacturing graphical paper Revoked EP1619296B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004035523A DE102004035523A1 (en) 2004-07-22 2004-07-22 Paper machine clothing

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EP1619296A2 EP1619296A2 (en) 2006-01-25
EP1619296A3 EP1619296A3 (en) 2007-01-31
EP1619296B1 true EP1619296B1 (en) 2011-10-12

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EP05104997A Revoked EP1619296B1 (en) 2004-07-22 2005-06-08 Process for manufacturing graphical paper

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US (1) US8176945B2 (en)
EP (1) EP1619296B1 (en)
AT (1) ATE528441T1 (en)
DE (1) DE102004035523A1 (en)
ES (1) ES2372851T3 (en)

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Publication number Priority date Publication date Assignee Title
US7473336B2 (en) 2005-04-28 2009-01-06 Albany International Corp. Multiaxial fabrics
DE102005055785A1 (en) * 2005-11-21 2007-05-24 Voith Patent Gmbh papermaker
DE102006004897A1 (en) * 2006-02-03 2007-08-09 Voith Patent Gmbh Multi-layer forming fabric
DE102006008812A1 (en) * 2006-02-25 2007-08-30 Voith Patent Gmbh Fabric tape for web material e.g. paper, manufacturing machine, has web material-sided fabric layer and machine-sided fabric layer, where machine-sided fabric layer is woven with irregular sateen interlace
EP1991735B1 (en) 2006-02-25 2014-04-02 Voith Patent GmbH Fabric belt for machine for producing web material, especially paper or card
DE202014001502U1 (en) * 2013-03-01 2014-03-21 Voith Patent Gmbh Woven wire with flat warp threads

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CA1277209C (en) * 1986-11-28 1990-12-04 Dale B. Johnson Composite forming fabric
DE3713510A1 (en) * 1987-04-22 1988-11-10 Oberdorfer Fa F PAPER MACHINE SCREEN FROM A DOUBLE-LAYER FABRIC
DE9211391U1 (en) * 1992-08-25 1992-10-29 Siebtuchfabrik AG, Olten Forming screen
DE4302031C1 (en) * 1993-01-26 1993-12-16 Heimbach Gmbh Thomas Josef Fourdrinier for paper mfg. machine for large contact surface area - comprises oven plastics filaments with gp. in sub-gps. shrunk for longitudinal filaments side by side, for flexibility
US5544678A (en) * 1995-04-14 1996-08-13 Jwi Ltd. Composite forming fabric woven with an Nx2N machine side layer
GB9604602D0 (en) 1996-03-04 1996-05-01 Jwi Ltd Composite papermaking fabric with paired weft binder yarns
GB9811089D0 (en) 1998-05-23 1998-07-22 Jwi Ltd Warp-tied composite forming fabric
ES2168716T3 (en) * 1998-11-18 2002-06-16 Heimbach Gmbh Thomas Josef FLAT TEXTILE STRUCTURE.
US6276402B1 (en) * 1999-08-23 2001-08-21 Astenjohnson, Inc. Multilayer papermakers fabric
GB9924012D0 (en) * 1999-10-12 1999-12-15 Stone Richard Forming fabric woven with warp triplets
US6123116A (en) * 1999-10-21 2000-09-26 Weavexx Corporation Low caliper mechanically stable multi-layer papermaker's fabrics with paired machine side cross machine direction yarns
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US6244306B1 (en) * 2000-05-26 2001-06-12 Weavexx Corporation Papermaker's forming fabric
FI110131B (en) * 2001-02-22 2002-11-29 Tamfelt Oyj Abp A paper machine fabric

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EP1619296A3 (en) 2007-01-31
ATE528441T1 (en) 2011-10-15
ES2372851T3 (en) 2012-01-27
EP1619296A2 (en) 2006-01-25
DE102004035523A1 (en) 2006-02-09
US8176945B2 (en) 2012-05-15
US20060016508A1 (en) 2006-01-26

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