EP1619295B1 - Papermaking fabric - Google Patents
Papermaking fabric Download PDFInfo
- Publication number
- EP1619295B1 EP1619295B1 EP05104996A EP05104996A EP1619295B1 EP 1619295 B1 EP1619295 B1 EP 1619295B1 EP 05104996 A EP05104996 A EP 05104996A EP 05104996 A EP05104996 A EP 05104996A EP 1619295 B1 EP1619295 B1 EP 1619295B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- binding
- repeat unit
- points
- covering
- supporting
- 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.)
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- 239000004744 fabric Substances 0.000 title claims description 18
- 238000009941 weaving Methods 0.000 claims abstract description 5
- 230000008093 supporting effect Effects 0.000 claims description 28
- 230000001788 irregular Effects 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 description 10
- 230000035699 permeability Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- D21F1/0045—Triple layer fabrics
Definitions
- the present invention relates to a paper machine clothing according to the preamble of claim 1.
- These screens have a paper-side weave structure which is connected by binder threads to a machine-side weave structure.
- the binding threads are interwoven with the paper-side weave structure to form tie-up points and machine-side weave structure to form tie-off points.
- the conventionally shot-bound, three-ply fabric with a separate binding thread system can no longer meet the requirements with respect to monoplanity of the surface and consequently the requirements for the marking behavior.
- the pure binding threads have been given an additional 'task' by using them as part of the paper-side weave structure, ie the binding threads continued the weave structure formed by the warp and weft threads.
- the binding threads to the binding effect also has a fiber supporting effect.
- Such forming fabrics are referred to as SSB screens, where SSB stands for structurally-bonded or "sheet support binder". The marking tendency on the paper side can be considerably reduced by this measure.
- the known forming fabrics continue to have too high marking tendencies.
- the high marking tendencies are caused, inter alia, by the tying and binding points of the binding threads on the paper-side and the machine-side weave structure by the planarity and permeability (permeability) of the sieve and thus the dewatering behavior of the pulp suspension is changed at these locations.
- a screen for the production of tissue paper which has an upper and a lower fabric layer, wherein the two fabric layers are connected by binding threads that form constrictions through which significantly less water can flow through than adjacent areas of the screen.
- the invention is achieved by a paper machine clothing with the features of claim 1.
- the invention is based on the recognition that a mark caused by the setting or tying points becomes clearly visible to an observer, especially when the tying or tying points in the tying point or setting point repeat unit are arranged completely regularly with respect to one another.
- a papermachine fabric is proposed with a paper-side and a machine-side weave structure and binding threads, which are interwoven to form tying points with the paper side and formation of bonding points with the machine-side weave structure, wherein the arrangement of the tethering points or the Abbindehav by juxtaposition of several smallest Anbindetician- or Abbindeticianwiederholriaden can be described, and wherein in each tying point and / or Abbindeddlingwiederholappel at least one of the setting or tethering points in relation to the other setting or tethering points is arranged irregularly, the tying each are arranged as a pair of binder yarns, whereby, for example, each binder thread pair on the paper side weaves the path of a non-binding weft or warp and wherein by weaving the binding threads with the paper-side warp or paper-side wefts a webmaster is formed by the paper side warp and Weft threads is continued.
- the paper-side woven structure of the paper machine clothing is a plain weave and the papermaking fabric itself is a forming fabric for the production of graphic papers.
- Tying points and bonding points are defined as follows: At a tying point, a binding thread running in the CD direction weaves over a paper-side MD thread, at a setting point the binding thread weaves under a machine-side MD thread. Between consecutive tying and setting points no paper-side MD thread is arranged over which the binder thread weaves. Between the successive tying and setting points, no machine-side MD thread is arranged below which the binder thread weaves.
- a binding yarn running in the MD direction at a tying point, the binding yarn running in the MD direction weaves over a paper-side CD yarn, at a setting point the binder yarn weaves under a machine-side CD yarn. Between each successive tying and binding points no paper-side CD thread is arranged over which weaves the binder thread. Between successive tying and bonding points, no machine-side CD thread is arranged underneath which weaves the binder thread.
- An irregular arrangement is to be understood as meaning that at least one of the bonding points or attachment points breaks through the pattern formed by the remaining bonding points or attachment points or does not continue this pattern. That is, for example, all setting point are arranged along one of a plurality of mutually parallel straight lines, wherein a setting point is not arranged on one of the straight lines.
- the setting or attachment points are arranged regularly relative to one another, it is, for example, possible to arrange these along mutually parallel straight lines.
- a possibility of irregular arrangement can be caused by some of the setting and / or Anbinde08 are arranged in the Abbinderios- or Anbindeddlingwiederholü such that they can be connected only by at least one straight line, which is not parallel to another Abbinde- or Connecting points interconnecting lines runs.
- a particularly preferred embodiment of the invention therefore provides that the irregular arrangement is caused by some of the tethering and / or Abbinde08 are arranged in the Abbinderios- or Anbindeticianholussi so that these tethering and / or Abbinde08 not by a straight line in a first Abbindetician- or Anbindeticianwiederholussi connect, which can be continued by connecting tying or Abbindeticianen in one of the first Abbindetician- or Anbindeticianwiederholussi adjacent second Abbindetician- or Anbindeticianholriad.
- a particularly preferred embodiment of the invention provides that the irregular arrangement is caused by some of the attachment points and / or Abbinde08 are arranged in the Abbinderioshuiwiederholussi so such that these tethering and / or Abbinde08 not through a line in a first Abbindetician- or Anbindeticianwiederholussi connect with each other, which runs parallel to a straight line, the tying or Abbinde08 in one of the first Abbindetician- or Anbindeticianwiederholussi adjacent second Abbindetician- or Anbindeticianwiederholhow interconnected.
- At least one straight line can not be “continued” by a straight line parallel thereto in an adjoining tie point or tying repeat unit, but rather that the straight line in continuation of the tying point repeat unit is discontinuous, e.g. broken, which greatly reduces the visibility of the mark.
- Another possibility for influencing the regularity of the setting or tying points is that at least some setting or tying points arranged along a straight line are spaced apart from one another along the straight line.
- a preferred embodiment of the invention provides that up to 20%, preferably up to 30%, particularly preferably up to 50% and very particularly preferably up to 70% of the setting or tying points in the setting point or tying repeat unit not a regular Patterns are arranged following.
- the paper machine clothing can be described by stringing together a plurality of smallest repeat units, wherein the smallest repeat unit of the papermachine clothing is the least common multiple of the smallest repeat unit of the paper side weave structure, the smallest repeat unit of the machine side weave structure, the tie point and the tether repeat unit.
- the possibility of variation in influencing the irregular arrangement of the setting or tying points can be increased considerably by increasing the number of warp threads per smallest repeat unit.
- a particularly preferred embodiment of the invention provides that the smallest repeat unit of the paper machine clothing is formed by 24 or 26 or 28 or 30 or 40 or more warp threads.
- the Abbinderios- or Anbindeticianholhow is formed by a maximum of 5 or 7 warp threads.
- binding threads run in the warp and / or weft direction.
- the paper-side weave pattern is formed only by weaving paper-side warp or weft threads with the binding threads.
- the paper machine clothing is a forming fabric.
- FIG. 1 shows the distribution of setting points 1 of the binding threads of a Formieriebs 2 with a six Kettfäden 1K to 6K and twelve running in the weft binding threads 1 B to 12B formed Abbindeddlingwiederholriad.
- the Abbindeix 1 are in the representation of FIG. 1 represented by black squares.
- the Abbindelie 1 are regularly arranged to each other, which can be connected by a plurality of mutually parallel lines 3 together.
- the Abbindework 1 in the Formierieb 2 of FIG. 1 are arranged such that the straight lines 3 connecting the bonding points 1 can be continued by a setting point repeat unit 4 in the adjacent repeat units 5, 5 ', 5 " Tying to a change in the pore structure, which leads to quality-reducing markings in the paper as a result, especially in the graphic paper area.
- FIG. 2 shows a distribution of Abbindeterrorism on the machine side 7 of a forming fabric according to the invention 8.
- a smallest Abbindeddlingwiederholhow the forming fabric 8 shown is formed by 30 warp yarns 1 K to 30 K and 15 in the weft direction binding threads 1 B to 15B.
- four adjoining smallest Abbindeticianwiederholhow 9 to 12 are shown.
- Each Abbindeticianwiederholhowderholhow 9 to 12 has in the right area a number of mutually regularly arranged setting points 13, which are connected to each other via parallel lines 14.1 to 14.4. Some of these lines can also be continued in the adjacent repeat units. Thus, for example, the straight 14.1 of the repeat unit 9 is continued by the straight line 14.2 of the repeat unit 10. Or else the straight 14.2 from the repeat unit 9 is continued by the line 14.3 of the repeat unit 10.
- the left area of each smallest Abbindeticianwiederholhowderholhow many of mutually regularly arranged setting points 15 are provided, but which are arranged irregularly with respect to the Abindeddlingen 13, i. do not continue the pattern formed by the bonding points 13. Accordingly, in each Abbindeddlingwiederholhow 9 to 12, the binding points 15 with respect to the binding points 13 are arranged irregularly.
- the irregular arrangement is caused by some of the Abbindeimi 15, for example, in the Abbinderioswiederholhow 9 are arranged such that the bonding points 15 can not be connected by a straight line, which by connecting bonding points 13 or 15 in a of the tying point repeat unit 9 to continue adjoining tying point repeat unit 10 or 11 or 12.
- FIG. 3 shows a further embodiment of the invention in the form of a Formieriebes 17 with almost free distribution of its Abbindeach 18 and 19.
- Each Abbindeticianwiederholhow 21 to 24 is formed by 30 warp yarns 1 K to 30 K and 15 weft extending binding threads 1B to 15B. Only the binding points 18 are arranged to each other such that they can be connected to each other by parallel lines 20.1 and 20.2. Furthermore, it can be seen that the grades 20.2 of the Abbindeddlingwiederholhow 21 continues in the line 20.1 of the repeat unit 22.
- FIG. 4 The arrangement of the bonding points 28 to 32 is described by one of the Abbindeticianwiederholticianen 24 to 27, each Abbindeticianwiederholtician 24 to 27 by five warp yarns 1 K to 5 K and five running in the weft binding threads 1 B to 5 B is formed.
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- Paper (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Woven Fabrics (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Papiermaschinenbespannung nach dem Oberbegriff des Anspruchs 1.The present invention relates to a paper machine clothing according to the preamble of
Um die wesentlichen Anforderungen an Papiermaschinenbespannungen zum Einsatz in der Formierpartie von Papiermaschinen, sog. Formiersieben, im Hinblick auf Erhöhung der Dimensionsstabilität und Reduktion von Markierungsneigung zu erfüllen, wurden in den letzten Jahren zunehmend dreilagige Formiersiebe entwickelt.In order to meet the essential requirements of paper machine clothing for use in the Formierpartie of paper machines, so-called Formiersieben, in view of increasing the dimensional stability and reduction of tendency to mark, in recent years increasingly three-ply forming fabrics have been developed.
Diese Siebe weisen eine papierseitige Webstruktur auf, welche durch Bindefäden mit einer maschinenseitigen Webstruktur verbunden ist. Bei einem solchen Sieb werden die Bindefäden unter Bildung von Anbindepunkten mit der papierseitigen Webstruktur und unter Bildung von Abbindepunkten mit der maschinenseitigen Webstruktur verwoben.These screens have a paper-side weave structure which is connected by binder threads to a machine-side weave structure. In such a screen, the binding threads are interwoven with the paper-side weave structure to form tie-up points and machine-side weave structure to form tie-off points.
Hierbei können die herkömmlich schussgebundenen, dreilagigen Gewebe mit einem separaten Bindefadensystem den Anforderungen bzgl. Monoplanität der Oberfläche und daraus folgend den Anforderungen an das Markierungsverhalten nicht mehr Genüge tun.Here, the conventionally shot-bound, three-ply fabric with a separate binding thread system can no longer meet the requirements with respect to monoplanity of the surface and consequently the requirements for the marking behavior.
Aus diesem Grund wurde den reinen Bindefäden eine zusätzliche 'Aufgabe' gegeben, indem man sie als Teil der papierseitigen Webstruktur verwendet, d.h. die Bindefäden setzten die durch die Kett- und Schussfäden gebildete Webstruktur fort. Somit kommt den Bindefäden zu der bindenden Wirkung auch eine faserunterstützende Wirkung zu. Solche Formiersiebe werden als SSB Siebe bezeichnet, wobei SSB für strukturschussgebunden bzw. für "Sheet Support Binder" steht. Die Markierungsneigung auf der Papierseite kann durch diese Maßnahme erheblich reduziert werden.For this reason, the pure binding threads have been given an additional 'task' by using them as part of the paper-side weave structure, ie the binding threads continued the weave structure formed by the warp and weft threads. Thus, the binding threads to the binding effect also has a fiber supporting effect. Such forming fabrics are referred to as SSB screens, where SSB stands for structurally-bonded or "sheet support binder". The marking tendency on the paper side can be considerably reduced by this measure.
Trotz der beschriebenen Verbesserungen weisen die bekannten Formiersiebe weiterhin zu hohe Markierungsneigungen auf. Die hohen Markierungsneigungen werden unter anderem durch die Anbinde- und Abbindepunkte der Bindefäden an der papierseitigen und der maschinenseitigen Webstruktur dadurch hervorgerufen, indem an diesen Stellen die Planarität und die Durchlässigkeit (Permeabilität) des Siebs und somit das Entwässerungsverhalten der Faserstoffsuspension verändert wird.Despite the improvements described, the known forming fabrics continue to have too high marking tendencies. The high marking tendencies are caused, inter alia, by the tying and binding points of the binding threads on the paper-side and the machine-side weave structure by the planarity and permeability (permeability) of the sieve and thus the dewatering behavior of the pulp suspension is changed at these locations.
Aus der
Es ist die Aufgabe der vorliegenden Erfindung eine Papiermaschinenbespannung mit Bindefadensystem vorzuschlagen, welches bzgl. den aus dem Stand der Technik bekannten Papiermaschinenbespannungen eine deutlich weniger sichtbare Markierungsneigung hat.It is the object of the present invention to propose a paper machine clothing with binding thread system, which has a markedly less visible marking tendency with respect to the paper machine clothing known from the prior art.
Die Erfindung wird durch eine Papiermaschinenbespannung mit den Merkmalen des Patentanspruchs 1 gelöst.The invention is achieved by a paper machine clothing with the features of
Vorteilhafte Ausführungen und Weiterbildungen sind in den Unteransprüchen angegeben.Advantageous embodiments and further developments are specified in the subclaims.
Die Erfindung basiert auf der Erkenntnis, dass eine durch die Abbinde- bzw. Anbindepunkte hervorgerufene Markierung einem Beobachter insbesondere dann deutlich sichtbar wird, wenn die Abbinde- bzw. Anbindepunkte in der Anbindepunkt- bzw. Abbindepunktwiederholeinheit vollständig regelmäßig zueinander angeordnet sind.The invention is based on the recognition that a mark caused by the setting or tying points becomes clearly visible to an observer, especially when the tying or tying points in the tying point or setting point repeat unit are arranged completely regularly with respect to one another.
Gemäß dem Patentanspruch 1 wird daher eine Papiermaschinenbespannung vorgeschlagen mit einer papierseitigen und einer maschinenseitigen Webstruktur und mit Bindefäden, welche unter Bildung von Anbindepunkten mit der papierseitigen und unter Bildung von Abbindepunkten mit der maschinenseitigen Webstruktur verwoben sind, wobei die Anordnung der Anbindepunkte bzw. der Abbindepunkte durch Aneinanderreihung von mehreren kleinsten Anbindepunkt- bzw. Abbindepunktwiederholeinheiten beschreibbar ist, und wobei in jeder Anbindepunkt- und / oder Abbindepunktwiederholeinheit zumindest einer der Abbinde- bzw. Anbindepunkte in Bezug zu den übrigen Abbinde- bzw. Anbindepunkten unregelmäßig angeordnet ist, wobei die Bindebäden jeweils als Bindefadenpaare angeordnet sind, wodurch bspw. jedes Bindefadenpaar auf der Papierseite den Pfad eines nicht bindenden Schuss- oder Kettfadens webt und wobei durch Verweben der Bindefäden mit den papierseitigen Kettfäden oder mit den papierseitigen Schussfäden ein Webmaster gebildet wird, das durch die papierseitigen Kett- und Schussfäden fortgesetzt wird.According to
Einschub von Zudem ist die papierseitige Webstruktur der Papiermaschinenbespannung eine Leinwandbindung und bei der Papiermaschinenbespannung selbst handelt es sich um ein Formiersieb zur Herstellung von graphischen Papieren.In addition, the paper-side woven structure of the paper machine clothing is a plain weave and the papermaking fabric itself is a forming fabric for the production of graphic papers.
Anbindepunkte und Abbindepunkte werden hierbei wie folgt festgelegt: Bei einem Anbindepunkt webt ein in CD-Richtung verlaufender Bindefaden über einen papierseitigen MD-Faden, bei einem Abbindepunkt webt der Bindefaden unter einen maschinenseitigen MD-Faden. Zwischen aufeinander folgenden Anbinde- und Abbindepunkten ist kein papierseitiger MD-Faden angeordnet über den der Bindefaden webt. Zwischen aufeinander folgenden Anbinde- und Abbindepunkten ist kein maschinenseitiger MD-Faden angeordnet unter den der Bindefaden webt.Tying points and bonding points are defined as follows: At a tying point, a binding thread running in the CD direction weaves over a paper-side MD thread, at a setting point the binding thread weaves under a machine-side MD thread. Between consecutive tying and setting points no paper-side MD thread is arranged over which the binder thread weaves. Between the successive tying and setting points, no machine-side MD thread is arranged below which the binder thread weaves.
Analog gilt für einen in MD-Richtung verlaufenden Bindefaden: Bei einem Anbindepunkt webt der in MD-Richtung verlaufender Bindefaden über einen papierseitigen CD-Faden, bei einem Abbindepunkt webt der Bindefaden unter einen maschinenseitigen CD-Faden. Zwischen aufeinander folgenden Anbinde- und Abbindepunkten ist kein papierseitiger CD-Faden angeordnet über den der Bindefaden webt. Zwischen aufeinander folgenden Anbinde- und Abbindepunkten ist kein maschinenseitiger CD-Faden angeordnet unter den der Bindefaden webt.The same applies to a binding yarn running in the MD direction: at a tying point, the binding yarn running in the MD direction weaves over a paper-side CD yarn, at a setting point the binder yarn weaves under a machine-side CD yarn. Between each successive tying and binding points no paper-side CD thread is arranged over which weaves the binder thread. Between successive tying and bonding points, no machine-side CD thread is arranged underneath which weaves the binder thread.
Unter einer unregelmäßigen Anordnung soll verstanden werden, dass zumindest einer der Abbindepunkte bzw. Anbindepunkte das von den übrigen Abbindepunkten bzw. Anbindepunkten gebildete Muster durchbricht bzw. dieses Muster nicht fortsetzt. D.h. es sind bspw. sämtliche Abbindepunkt entlang einer von mehreren zueinander parallelen Geraden angeordnet, wobei ein Abbindepunkt nicht auf einer der Geraden angeordnet ist.An irregular arrangement is to be understood as meaning that at least one of the bonding points or attachment points breaks through the pattern formed by the remaining bonding points or attachment points or does not continue this pattern. That is, for example, all setting point are arranged along one of a plurality of mutually parallel straight lines, wherein a setting point is not arranged on one of the straight lines.
Sind die Abbinde- bzw. Anbindepunkte regelmäßig zueinander angeordnet, ist es bspw. möglich diese entlang zueinander parallelen Geraden anzuordnen . Eine Möglichkeit der unregelmäßigen Anordnung kann dadurch hervorgerufen werden, indem einige der Abbinde- und / oder Anbindepunkte in der Abbindepunkt- bzw. Anbindepunktwiederholeinheit derart angeordnet sind, dass diese nur durch zumindest eine Gerade miteinander verbindbar sind, welche nicht parallel zu einer andere Abbinde- bzw. Anbindepunkte miteinander verbindenden Geraden verläuft.If the setting or attachment points are arranged regularly relative to one another, it is, for example, possible to arrange these along mutually parallel straight lines. A possibility of irregular arrangement can be caused by some of the setting and / or Anbindepunkte are arranged in the Abbindepunkt- or Anbindepunktwiederholeinheit such that they can be connected only by at least one straight line, which is not parallel to another Abbinde- or Connecting points interconnecting lines runs.
Dadurch wird erreicht, dass in jeder Abbindepunkt- und / oder Anbindepunktwiederholeinheit zumindest einige der Abbinde- bzw. Anbindepunkte entlang einer Geraden angeordnet sind, die nicht parallel zu den die anderen Abbinde- bzw. Anbindepunkte miteinander verbindenden Gerade(n) verläuft. Hierdurch wird die gleichmäßige Struktur der Anordnung der Abbinde- bzw. Anbindepunkte unterbrochen, wodurch die Markierungsneigung reduziert wird.This ensures that in each Abbindepunkt- and / or Anbindepunktwiederholeinheit at least some of the setting or tethering points along a straight line are arranged, which is not parallel to the other bonding or tying points interconnecting straight line (s). As a result, the uniform structure of the arrangement of the tying or Anbindepunkte is interrupted, whereby the tendency to mark is reduced.
Die Anordnung der Abbindepunkte bzw. Abbindepunkte ist durch Aneinanderreihung von vielen Abbindepunkt- bzw. Anbindepunktwiederholeinheiten beschreibbar. Versuche haben gezeigt, dass die Markierungsneigung besonders groß ist, wenn sich die Abbindepunkte- bzw. Anbindepunkte miteinander verbindenden Geraden von einer Abbindepunkt- bzw. Anbindepunktwiederholeinheit zur angrenzenden Abbindepunkt- bzw. Anbindepunktwiederholeinheit fortsetzen, so dass im Resultat eine regelmäßige Anordnung der Abbinde- bzw. Anbindepunkte von Abbindepunkt- bzw. Anbindepunktwiederholeinheit zu angrenzender Abbindepunkt- bzw. Anbindepunktwiederholeinheit in gerader Verlängerung fortgesetzt wird. Eine besonders bevorzugte Ausführungsform der Erfindung sieht deshalb vor, dass die unregelmäßige Anordnung dadurch hervorgerufen wird, indem einige der Anbindepunkte und / oder Abbindepunkte in der Abbindepunkt- bzw. Anbindepunktwiederholeinheit derart angeordnet sind, so dass sich diese Anbindepunkte und / oder Abbindepunkte nicht durch eine Gerade in einer ersten Abbindepunkt- bzw. Anbindepunktwiederholeinheit miteinander verbinden lassen, welche sich durch Verbinden von Anbinde- bzw. Abbindepunkten in einer der ersten Abbindepunkt- bzw. Anbindepunktwiederholeinheit angrenzenden zweiten Abbindepunkt- bzw. Anbindepunktwiederholeinheit fortsetzen lässt.The arrangement of the Abbindepunkte or Abbindepunkte can be described by stringing together many Abbindepunkt- or Anbindepunktwiederholeinheiten. Experiments have shown that the marking tendency is particularly great when the Abbindepunkte- or Anbindepunkte interconnecting lines continue from a Abbindepunkt- or Anbindepunktwiederholeinheit to adjacent Abbindepunkt- or Anbindepunktwiederholeinheit, so that in the result a regular arrangement of Abbind- or Tying points from Abbindepunkt- or Anbindepunktwiederholeinheit to adjacent Abbindepunkt- or Anbindepunktwiederholeinheit in straight extension is continued. A particularly preferred embodiment of the invention therefore provides that the irregular arrangement is caused by some of the tethering and / or Abbindepunkte are arranged in the Abbindepunkt- or Anbindepunktwiederholeinheit so that these tethering and / or Abbindepunkte not by a straight line in a first Abbindepunkt- or Anbindepunktwiederholeinheit connect, which can be continued by connecting tying or Abbindepunkten in one of the first Abbindepunkt- or Anbindepunktwiederholeinheit adjacent second Abbindepunkt- or Anbindepunktwiederholeinheit.
Versuche haben weiter gezeigt, dass nicht nur die direkte Anordnung von Abbinde- bzw. Anbindepunkten entlang einer Geraden, die Abbindepunkt- bzw. Anbindepunktwiederholeinheiten übergreift, zu verstärkter Markierungsneigung führt, sondern, dass auch eine parallele Anordnung der Geraden von Abbindepunkt- bzw. Anbindepunktwiederholeinheit zu angrenzender Abbindepunkt- bzw. Anbindepunktwiederholeinheit die Markierungsneigung verstärkt. Aus diesem Grund sieht eine besonders bevorzugte Ausführungsform der Erfindung vor, dass die unregelmäßige Anordnung dadurch hervorgerufen wird, indem einige der Anbindepunkte und / oder Abbindepunkte in der Abbindepunkt- bzw. Anbindepunktwiederholeinheit derart angeordnet sind, so dass sich diese Anbindepunkte und / oder Abbindepunkte nicht durch eine Gerade in einer ersten Abbindepunkt- bzw. Anbindepunktwiederholeinheit miteinander verbinden lassen, welche parallel zu einer Gerade verläuft, die Anbinde- bzw. Abbindepunkte in einer der ersten Abbindepunkt- bzw. Anbindepunktwiederholeinheit angrenzenden zweiten Abbindepunkt- bzw. Anbindepunktwiederholeinheit miteinander verbindet.Experiments have further shown that not only the direct arrangement of bonding or tying points along a straight line that overlaps Abbindepunkt- or Anbindepunktwiederholeinheiten leads to increased marking tendency, but that also a parallel arrangement of the straight line of Abbindepunkt- or Anbindepunktwiederholeinheit amplified to adjacent Abbindepunkt- or Anbindepunktwiederholeinheit the marking tendency. For this reason, a particularly preferred embodiment of the invention provides that the irregular arrangement is caused by some of the attachment points and / or Abbindepunkte are arranged in the Abbindepunktpunktwiederholeinheit so such that these tethering and / or Abbindepunkte not through a line in a first Abbindepunkt- or Anbindepunktwiederholeinheit connect with each other, which runs parallel to a straight line, the tying or Abbindepunkte in one of the first Abbindepunkt- or Anbindepunktwiederholeinheit adjacent second Abbindepunkt- or Anbindepunktwiederholeinheit interconnected.
Somit wird erreicht, dass zumindest eine Gerade nicht durch eine dazu parallele Gerade in einer angrenzenden Abbindepunkt- bzw. Anbindepunktwiederholeinheit "fortgesetzt" werden kann, sondern, dass die Gerade in Fortführung der Abbindepunkt- bzw. Anbindepunktwiederholeinheit diskontinuierlich, z.B. gebrochen, verläuft, wodurch die Sichtbarkeit der Markierung erheblich reduziert wird.It is thus achieved that at least one straight line can not be "continued" by a straight line parallel thereto in an adjoining tie point or tying repeat unit, but rather that the straight line in continuation of the tying point repeat unit is discontinuous, e.g. broken, which greatly reduces the visibility of the mark.
Eine weitere Möglichkeit die Regelmäßigkeit der Abbinde- bzw. Anbindepunkte zu beeinflussen besteht darin, dass zumindest einige entlang einer Geraden angeordnete Abbinde- bzw. Anbindepunkte entlang der Geraden unterschiedlich zueinander beabstandet sind.Another possibility for influencing the regularity of the setting or tying points is that at least some setting or tying points arranged along a straight line are spaced apart from one another along the straight line.
Die Sichtbarkeit der Markierung kann ferner weiter reduziert werden, je mehr Abbinde- bzw. Anbindepunkte in der Abbindepunkt- bzw. Anbindepunktwiederholeinheit unregelmäßig angeordnet sind, wobei die Anordnung der Abbinde- bzw. Anbindepunkte auf die papierseitige und / oder maschinenseitige Webstruktur abzustimmen ist. Eine bevorzugte Ausführungsform der Erfindung sieht vor, dass bis zu 20%, bevorzugt bis zu 30%, besonders bevorzugt bis zu 50% und ganz besonders bevorzugt bis zu 70% der Abbinde- bzw. Anbindepunkte in der Abbindepunkt- bzw. Anbindepunktwiederholeinheit nicht einem regelmäßigen Muster folgend angeordnet sind.The visibility of the marking can be further reduced, the more binding or attachment points are arranged irregularly in the Abbindepunkt- or Anbindepunktwiederholeinheit, the arrangement of the binding or tethering points on the paper side and / or machine-side weaving structure is tuned. A preferred embodiment of the invention provides that up to 20%, preferably up to 30%, particularly preferably up to 50% and very particularly preferably up to 70% of the setting or tying points in the setting point or tying repeat unit not a regular Patterns are arranged following.
Bspw. durch vollständig unregelmäßige Anordnung der Abbinde- bzw. Anbindepunkte kann die Sichtbarkeit der Markierung deutlich reduziert werden.For example. By completely irregular arrangement of the bonding or tying points, the visibility of the mark can be significantly reduced.
Die Papiermaschinenbespannung ist durch Aneinanderreihung von mehreren kleinsten Wiederholeinheiten beschreibbar, wobei die kleinste Wiederholeinheit der Papiermaschinenbespannung das kleinste gemeinsame Vielfache aus der kleinsten Wiederholeinheit der papierseitigen Webstruktur, der kleinsten Wiederholeinheit der maschinenseitigen Webstruktur, der Abbindepunkt- und der Anbindepunktwiederholeinheit ist. Die Variationsmöglichkeit bei der Beeinflussung der unregelmäßigen Anordnung der Abbinde- bzw. Anbindepunkte kann durch Erhöhung der Kettfadenzahl pro kleinster Wiederholeinheit erheblich erhöht werden. Demzufolge sieht eine besonders bevorzugte Ausführungsform der Erfindung vor, dass die kleinste Wiederholeinheit der Papiermaschinenbespannung durch 24 oder 26 oder 28 oder 30 oder 40 oder mehr Kettfäden gebildet wird.The paper machine clothing can be described by stringing together a plurality of smallest repeat units, wherein the smallest repeat unit of the papermachine clothing is the least common multiple of the smallest repeat unit of the paper side weave structure, the smallest repeat unit of the machine side weave structure, the tie point and the tether repeat unit. The possibility of variation in influencing the irregular arrangement of the setting or tying points can be increased considerably by increasing the number of warp threads per smallest repeat unit. Accordingly, a particularly preferred embodiment of the invention provides that the smallest repeat unit of the paper machine clothing is formed by 24 or 26 or 28 or 30 or 40 or more warp threads.
Nach einer weiteren bevorzugten Ausführungsform der Erfindung wird die Abbindepunkt- bzw. Anbindepunktwiederholeinheit durch maximal 5 oder 7 Kettfäden gebildet.According to a further preferred embodiment of the invention, the Abbindepunkt- or Anbindepunktwiederholeinheit is formed by a maximum of 5 or 7 warp threads.
Des weiteren ist es möglich, dass die Bindefäden in Kett- und / oder Schussrichtung verlaufen.Furthermore, it is possible that the binding threads run in the warp and / or weft direction.
Es ist aber auch durchaus denkbar, dass das papierseitige Webmuster nur durch Verweben von papierseitigen Kett- oder Schussfäden mit den Bindefäden gebildet wird.But it is also quite conceivable that the paper-side weave pattern is formed only by weaving paper-side warp or weft threads with the binding threads.
Vorzugsweise handelt es sich bei der Papiermaschinenbespannung um ein Formiersieb.Preferably, the paper machine clothing is a forming fabric.
Der Gegenstand der Erfindung wird nachfolgend anhand der folgenden Zeichnungen erläutert. Es zeigen
Figur 1- Verteilung von Abbindepunkten der Maschinenseite einer Webstruktur mit einer durch 6 Kettfäden gebildeten kleinsten Abbindepunktwiederholeinheit,
Figur 2- UnregelmäßigeVerteilung von Abbindepunkten der Maschinenseite bei einem erfindungsgemäßen Formiersieb mit einer kleinsten Abbindepunktwiederholeinheit mit 30 Kettfäden.
Figur 3- Nahezu völlige unregelmäßige Verteilung von Abbindepunkten der Maschinenseite bei einem erfindungsgemäßen Formiersieb mit einer kleinsten Abbindepunktwiederholeinheit mit 30 Kettfäden.
Figur 4- UnregelmäßigeVerteilung von Abbindepunkten der Maschinenseite bei einem erfindungsgemäßen Formiersieb mit einer kleinsten Abbindepunktwiederholeinheit mit 5 Kettfäden.
- FIG. 1
- Distribution of binding points of the machine side of a woven structure with a smallest binding point repeat unit formed by 6 warp threads,
- FIG. 2
- Irregular distribution of machine-side setting points in a forming fabric of the invention having a 30-warp shrink-point repeat unit.
- FIG. 3
- Almost complete irregular distribution of Abbindepunkten the machine side in a forming fabric according to the invention with a smallest setpoint repeat unit with 30 warp threads.
- FIG. 4
- Irregular distribution of machine-side setting points in a forming fabric according to the present invention having a 5-twining tying-repeat unit.
Die
Wie aus der
Die
Jede Abbindepunktwiederholeinheit 9 bis 12 weist im rechten Bereich eine Anzahl von zueinander regelmäßig angeordneten Abbindepunkten 13 auf, welche über zueinander parallele Geraden 14.1 bis 14.4 miteinander verbunden sind. Diese Geraden können teilweise auch in den angrenzenden Wiederholeinheiten fortgesetzt werden. So wird bspw. die gerade 14.1 der Wiederholeinheit 9 durch die Gerade 14.2 der Wiederholeinheit 10 fortgesetzt. Oder aber die gerade 14.2 aus der Wiederholeinheit 9 wird durch die Gerade 14.3 der Wiederholeinheit 10 fortgesetzt. Im linken Bereich jeder kleinsten Abbindepunktwiederholeinheit 9 bis 12 sind eine Anzahl von zueinander regelmäßig angeordneten Abbindepunkten 15 vorgesehen, welche aber in Bezug zu den Abindepunkten 13 unregelmäßig angeordnet sind, d.h. das von den Abbindepunkten 13 gebildete Muster nicht fortsetzen. Dementsprechend sind in jeder Abbindepunktwiederholeinheit 9 bis 12 die Abbindepunkte 15 in Bezug zu den Abbindepunkten 13 unregelmäßig angeordnet.Each
Weiter erkennt man, dass die unregelmäßige Anordnung dadurch hervorgerufen wird, indem die Abbindepunkte 15 in jeder Abbindepunktwiederholeinheit derart angeordnet sind, dass diese nur durch Gerade 16.1 bis 16.4 miteinander verbindbar sind, welche nicht parallel zu den die Abbindepunkte 13 miteinander verbindenden Geraden 14.1 bis 14.4 verlaufen.Furthermore, it can be seen that the irregular arrangement is caused by the bonding points 15 are arranged in each Abbindepunktwiederholeinheit such that they are connected only by straight line 16.1 to 16.4, which are not parallel to the bonding points 13 interconnecting lines 14.1 to 14.4 ,
Des weiteren wird die unregelmäßige Anordnung dadurch hervorgerufen wird, indem einige der Abbindepunkte 15 bspw. in der Abbindepunktwiederholeinheit 9 derart angeordnet sind, so dass sich die Abbindepunkte 15 nicht durch eine Gerade miteinander verbinden lassen, welche sich durch Verbinden von Abbindepunkten 13 oder 15 in einer der Abbindepunktwiederholeinheit 9 angrenzenden Abbindepunktwiederholeinheit 10 oder 11 oder 12 fortsetzen lässt.Furthermore, the irregular arrangement is caused by some of the
Vielmehr erkennt man, dass bspw. bei Fortführung der Abbindepunktwiederholeinheiten die Gerade 14.4 der Abbindepunktwiederholeinheit 9 durch die Gerade 16.2 der Abbindepunktwiederholeinheit 10 gebrochen wird und somit die Geraden 14.4 und 16.2 von der Abbindepunktwiederholeinheit 9 zur Abbindepunktwiederholeinheit 10 diskontinuierlich (gebrochen) verlaufen. Des weiteren werden bspw. die Geraden 16.3 und 16.4 bei Fortsetzung der Abbindepunktwiederholeinheiten 11 und 12 gebrochen, d.h. nicht kontinuierlich fortgesetzt. Dies reduziert die Sichtbarkeit der Markierung, entstehend durch die Bindefadenabbindungspunkte wesentlich.Rather, it can be seen that, for example, on continuation of Abbindepunktwiederholeinheiten the straight line 14.4 of the
Die
Die
Wie aus der
Man erkennt darüber hinaus, dass die unregelmäßige Anordnung dadurch hervorgerufen wird, indem die Abbindepunkte 29 und 30 in der Abbindepunktwiederholeinheit derart angeordnet sind, dass diese nur durch eine Gerade 33 miteinander verbindbar sind, welche nicht parallel zu einer die Abbindepunkte 28,31 und 32 miteinander verbindenden Geraden 34 verläuft.It can also be seen that the irregular arrangement is caused by the
Claims (10)
- Paper machine clothing (7, 17, 23) having a paper-side and a machine-side woven structure and having binding threads (B1, B2, ...B15) which are woven while forming covering binding points with the paper-side woven structure and forming supporting binding points (13, 15, 18, 19) with the machine-side woven structure, it being possible for the arrangement of the covering binding points and of the supporting binding points (13, 15, 18, 19) to be described by lining up a plurality of smallest covering binding point repeat units and supporting binding point repeat units (9-12, 24-27) in a row, in each covering binding point repeat unit and/or supporting binding point repeat unit (9-12, 24-27), at least one of the supporting binding points or covering binding points (13, 15, 18, 19), being arranged irregularly in relation to the other supporting binding points and covering binding points (13, 15, 18, 19), characterized in that the binding threads (B1, B2, ...B15) are in each case arranged as pairs of binding threads, and a woven pattern is formed by weaving the binding threads (B1, B2, ...B15) with the paper-side warp threads or with the paper-side weft threads, which is continued by the paper-side warp and weft threads, in that the paper-side woven structure is a plain weave, and in that it is a forming fabric for the production of graphic papers.
- Paper machine clothing according to Claim 1, characterized in that the irregular arrangement is brought about by some of the supporting binding points and/or covering binding points (13, 15, 18, 19) in the supporting binding point repeat unit or covering binding point repeat unit (9-12, 24-27) being arranged in such a way that these can be connected to one another only by at least one straight line which does not run parallel to another straight line connecting supporting binding points and/or covering binding points (13, 15, 18, 19) to one another.
- Paper machine clothing according to Claim 1 or 2, characterized in that the irregular arrangement is brought about by some of the covering binding points and/or supporting binding points (13, 15, 18, 19) in the supporting binding point repeat unit or covering binding point repeat unit (9-12, 24-27) being arranged in such a way that these covering binding points and/or supporting binding points (13, 15, 18, 19) in a first supporting binding point repeat unit or covering binding point repeat unit (9-12, 24-27) cannot be connected to one another by a straight line which can be continued by connecting covering binding points or supporting binding points (13, 15, 18, 19) in a second supporting binding point repeat unit or covering binding point repeat unit (9-12, 24-27) adjoining the first supporting binding point repeat unit or covering binding point repeat unit (9-12, 24-27).
- Paper machine clothing according to one of the preceding claims, characterized in that the irregular arrangement is brought about by some of the covering binding points and/or supporting binding points (13, 15, 18, 19) in the supporting binding point repeat unit or covering binding point repeat unit (9-12, 24-27) being arranged in such a way that these covering binding points and/or supporting binding points (13, 15, 18, 19) cannot be connected to one another by a straight line in a first supporting binding point repeat unit or covering binding point repeat unit (9-12, 24-27) which runs parallel to a straight line which connects to one another covering binding points and/or supporting binding points (13, 15, 18, 19) in a second supporting binding point repeat unit or covering binding point repeat unit (9-12, 24-27) adjoining the first supporting binding point repeat unit or covering binding point repeat unit (9-12, 24-27).
- Paper machine clothing according to one of the preceding claims, characterized in that at least some supporting binding points or covering binding points (13, 15, 18, 19) arranged along a straight line are spaced apart differently from one another along the straight line.
- Paper machine clothing according to one of the preceding claims, characterized in that up to 20%, preferably up to 30%, particularly preferably up to 50% and quite particularly preferably up to 70% of the supporting binding points and/or covering binding points (13, 15, 18, 19) in the supporting binding point repeat unit or covering binding point repeat unit (9-12, 24-27) are arranged so as not to follow a regular pattern.
- Paper machine clothing according to one of the preceding claims, characterized in that the smallest repeat unit of the paper machine clothing is formed by 24 or 26 or 28 or 30 or 40 or more warp threads.
- Paper machine clothing according to one of the preceding claims, characterized in that the supporting binding point repeat unit or covering binding point repeat unit (9-12, 24-27) is formed by at most 5 or 7 warp threads.
- Paper machine clothing according to one of the preceding claims, characterized in that the binding threads run in the warp and/or weft direction.
- Paper machine clothing according to one of the preceding claims, characterized in that the paper machine clothing (7, 17, 23) is a forming fabric.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004035522A DE102004035522A1 (en) | 2004-07-22 | 2004-07-22 | Paper machine clothing |
Publications (3)
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EP1619295A2 EP1619295A2 (en) | 2006-01-25 |
EP1619295A3 EP1619295A3 (en) | 2007-01-31 |
EP1619295B1 true EP1619295B1 (en) | 2009-08-12 |
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EP05104996A Revoked EP1619295B1 (en) | 2004-07-22 | 2005-06-08 | Papermaking fabric |
Country Status (5)
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US (1) | US7249615B2 (en) |
EP (1) | EP1619295B1 (en) |
AT (1) | ATE439469T1 (en) |
DE (2) | DE102004035522A1 (en) |
ES (1) | ES2329256T3 (en) |
Families Citing this family (16)
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DE102005028254A1 (en) * | 2005-06-17 | 2006-12-21 | Voith Patent Gmbh | cloth tape |
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 |
US7743795B2 (en) * | 2006-12-22 | 2010-06-29 | Voith Patent Gmbh | Forming fabric having binding weft yarns |
DE102006061114A1 (en) * | 2006-12-22 | 2008-06-26 | Voith Patent Gmbh | Fabric tape for a machine for producing web material and method for producing such a fabric tape |
US7604025B2 (en) * | 2006-12-22 | 2009-10-20 | Voith Patent Gmbh | Forming fabric having offset binding warps |
US20080196784A1 (en) * | 2007-02-15 | 2008-08-21 | Scott Quigley | Wear side weave pattern of a composite forming fabric |
DE102007020071A1 (en) * | 2007-04-28 | 2008-10-30 | Voith Patent Gmbh | forming fabric |
US7879194B2 (en) * | 2007-09-06 | 2011-02-01 | Voith Patent Gmbh | Structured forming fabric and method |
US7879193B2 (en) | 2007-09-06 | 2011-02-01 | Voith Patent Gmbh | Structured forming fabric and method |
US7879195B2 (en) * | 2007-09-06 | 2011-02-01 | Voith Patent Gmbh | Structured forming fabric and method |
DE102007046113A1 (en) * | 2007-09-21 | 2009-04-02 | Voith Patent Gmbh | forming fabric |
US7878224B2 (en) * | 2008-02-19 | 2011-02-01 | Voith Patent Gmbh | Forming fabric having binding warp yarns |
US7861747B2 (en) * | 2008-02-19 | 2011-01-04 | Voith Patent Gmbh | Forming fabric having exchanging and/or binding warp yarns |
US8002950B2 (en) * | 2008-06-11 | 2011-08-23 | Voith Patent Gmbh | Structured fabric for papermaking and method |
IT202000000637A1 (en) * | 2020-01-15 | 2021-07-15 | Feltri Marone S P A | PAPER MANUFACTURING TRIPLE FABRIC |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
JP3474042B2 (en) * | 1995-10-05 | 2003-12-08 | 日本フイルコン株式会社 | Two-layer papermaking fabric with auxiliary wefts arranged on the papermaking side fabric |
GB9604602D0 (en) * | 1996-03-04 | 1996-05-01 | Jwi Ltd | Composite papermaking fabric with paired weft binder yarns |
DE19732879C2 (en) | 1997-07-30 | 1999-07-22 | Sca Hygiene Prod Gmbh | Multi-layer screen for the wet area of a paper machine and the product made with it |
GB9811089D0 (en) * | 1998-05-23 | 1998-07-22 | Jwi Ltd | Warp-tied composite forming fabric |
US5988229A (en) * | 1998-08-20 | 1999-11-23 | Wangner Systems Corporation | Papermakers forming fabric with weft dominated paper support surface |
EP1002892B1 (en) * | 1998-11-18 | 2001-12-19 | Thomas Josef Heimbach Gesellschaft mit beschränkter Haftung & Co. | Flat textile 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 |
US6334467B1 (en) * | 1999-12-08 | 2002-01-01 | Astenjohnson, Inc. | Forming fabric |
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 |
-
2004
- 2004-07-22 DE DE102004035522A patent/DE102004035522A1/en not_active Withdrawn
-
2005
- 2005-06-08 AT AT05104996T patent/ATE439469T1/en not_active IP Right Cessation
- 2005-06-08 EP EP05104996A patent/EP1619295B1/en not_active Revoked
- 2005-06-08 DE DE502005007879T patent/DE502005007879D1/en active Active
- 2005-06-08 ES ES05104996T patent/ES2329256T3/en active Active
- 2005-07-21 US US11/185,703 patent/US7249615B2/en not_active Expired - Fee Related
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ES2329256T3 (en) | 2009-11-24 |
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US7249615B2 (en) | 2007-07-31 |
DE502005007879D1 (en) | 2009-09-24 |
ATE439469T1 (en) | 2009-08-15 |
EP1619295A2 (en) | 2006-01-25 |
US20060016509A1 (en) | 2006-01-26 |
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