EP0144530B2 - Screen-cloth for a paper-making machine - Google Patents
Screen-cloth for a paper-making machineInfo
- Publication number
- EP0144530B2 EP0144530B2 EP84109663A EP84109663A EP0144530B2 EP 0144530 B2 EP0144530 B2 EP 0144530B2 EP 84109663 A EP84109663 A EP 84109663A EP 84109663 A EP84109663 A EP 84109663A EP 0144530 B2 EP0144530 B2 EP 0144530B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- threads
- fabric layer
- longitudinal
- cross
- thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004744 fabric Substances 0.000 title claims abstract description 85
- 239000002759 woven fabric Substances 0.000 claims abstract 2
- 239000010410 layer Substances 0.000 description 73
- 229920004935 Trevira® Polymers 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
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 invention relates to a covering for paper machines from a two- or multi-layer fabric.
- the individual fabric layers are interconnected in that at least some the cross threads are double and only one of the double cross threads at a tying point the longitudinal threads of the other fabric layer is woven.
- the covering is in particular a those for the sheet formation area of a paper machine.
- Paper machine clothing in which the fabric layers are not through special binding threads, but through the so-called structural threads are interconnected are known (EP-A-44 053). Form in such paper machine clothing at the tie-down points, these are the places where the thread of one fabric layer is woven into another fabric layer is, depressions or depressions, the corresponding markings left in the paper.
- EP-A-80 686 is a double-layer Paper machine wire known d. H. a paper machine screen, that from two layers of wefts that exists with a single system of Warp threads are interwoven. A low mark is achieved in that the warp threads so that the fibers of the paper web supported by a surface structure, by having the same design features the warp thread guide is changed so that results in a double chain.
- lines 17 to 22 is mentioned a double chain for single-layer paper machine screens no advantage. This must also be done analogously for multi-layer paper machine screens that apply also as a combination of several single-layer fabrics can be viewed.
- the invention specified in claim 1 solves the task of a paper machine clothing of the generic type with regard to the marking properties to improve.
- the force with which the the two fabric layers are drawn towards each other, can be further reduced by the fact that the double threads cross alternately are integrated into the other fabric layer.
- a tying point becomes the one cross thread a pair of threads in the other fabric layer woven in while at the next tying point the other thread of the pair is woven.
- the paper side are preferable not just double those cross threads executed, which are woven into the other fabric layer are, but all transverse threads are double executed. This results in the additional Advantage that significantly more bases for the Fibers of the paper web are present as well improves paper quality.
- the two single threads of the double Cross threads preferably have the same Cross-section.
- a double one Cross thread of the paper machine screen according to the invention thus has approximately the same total cross-sectional area like a cross thread of a paper machine screen According to the state of the art.
- cross-sectional area each single thread of a double thread Cross thread is only 30% smaller than that Cross-sectional area of the longitudinal threads in the upper fabric layer.
- Cross-sectional area of each individual thread one double executed cross thread of the upper fabric layer approximately between 50 and 70% of the cross-sectional area of a longitudinal thread.
- the individual fabric layers can be a plain weave, Twill weave or satin weave have or derived bonds.
- the upper fabric layer, paper side can e.g. Legs Plain weave, while the lower Fabric layer, running side, a four-twill weave with long floats visible on the barrel side who can have cross threads.
- the lower fabric layer and in the upper fabric layer are in threads running in the same direction are duplicated.
- the upper fabric layer Cross threads run twice, so the one Cross thread of the pair, also in the lower Fabric layer is integrated at every tying point between the double threads the lower fabric layer and the one on the Tying involved longitudinal thread included and thereby the abrasion almost completely withdrawn.
- Cross threads 1 and longitudinal threads 2 form together the upper fabric layer 3 of the paper machine clothing or the paper machine screen. They are in a plain weave with each other interwoven. Longitudinal threads 5 and transverse threads 6 form the lower fabric layer 4, which also m woven in plain weave.
- the cross threads 1 of the upper fabric layer 3 are executed twice. d. H. instead of a cross thread a pair of transverse threads is woven.
- the two Except for cross threads 1 of a pair the tie point 7 the same course.
- At the Tie point 7 is a cross thread 1a of the pair in the lower fabric layer 4 incorporated while the other cross thread 1b in the upper fabric layer 3 remains. Separate at tie point 7 So the two transverse threads 1a and 1b one Cross thread pair.
- the next tying point is preferably the other Cross thread 1b woven into the lower fabric layer 4, the function of the two transverse threads 1a and 1b is therefore interchanged at each tying point 7.
- the paper machine screen consists of two layers of fabric 3, 4, each for its own Plastic wires are woven open, namely the upper fabric layer 3 from warp wires 2 and Weft wires 1 and the lower fabric layer 4 Warp wires 5 and weft wires 6.
- the upper fabric layer 3 has a plain weave and has a warp wire density of 29 wires per cm with a warp wire diameter of 0.18 mm.
- the warp wires are made of Trevira monofilament Type 940.
- the lower fabric layer also has a plain weave.
- the number of warps is 14.5 warps per cm with a diameter of 0.27 mm.
- the Warp threads are made from Trevira Monofil Type 940.
- the two layers of fabric are connected that a weft wire at regular intervals for a pair of weft wires in the upper fabric layer the warp wire of the lower fabric layer wraps around.
- This binding takes place in everyone eighth warp wire of the upper fabric layer or every fourth warp wire of the lower fabric layer instead, so that the individual wires of each pair of weft wires over a distance of 7 warp wires the upper fabric layer run together.
- every eighth pair of weft wires the upper fabric layer on the binding involved.
- the 7 weft wire pairs in between the upper fabric layer are never with the warp wires of the lower fabric layer tied.
- Every eighth pair of weft wires is one of the single wires with the warp wire lower fabric layer tied off during the other weft wire of the pair the normal weave continues unaffected, causing the Formation of a depression or depression on it Tie point 7 is avoided.
- the binding points of the individual weft wire pairs are offset from each other, d. H. the tying point of the first pair of weft wires and the eighth weft wire pairs are not under the same warp wire of the upper fabric layer.
Landscapes
- Paper (AREA)
- Woven Fabrics (AREA)
Abstract
Description
Die Erfindung betrifft eine Bespannung für Papiermaschinen aus einem zwei- oder mehrlagigen Gewebe. Die einzelnen Gewebelagen sind dadurch miteinander verbunden, daß zumindest einige der Querfäden doppelt ausgeführt sind und jeweils nur einer der doppelt ausgeführten Querfäden an einer Abbindestelle mit den Längsfäden der anderen Gewebelage verwebt ist. The invention relates to a covering for paper machines from a two- or multi-layer fabric. The individual fabric layers are interconnected in that at least some the cross threads are double and only one of the double cross threads at a tying point the longitudinal threads of the other fabric layer is woven.
Bei der Bespannung handelt es sich dabei insbesondere um eine solche für den Blattbildungsbereich einer Papiermaschine. The covering is in particular a those for the sheet formation area of a paper machine.
Papiermaschinenbespannungen, bei denen die Gewebelagen nicht durch spezielle Bindefäden, sondern durch die sogenannten strukturellen Fäden miteinander verbunden sind, sind bekannt (EP-A-44 053). Bei solchen Papiermaschinenbespannungen bilden sich an den Abbindestellen, das sind die Stellen, an denen der Faden einer Gewebelage in eine andere Gewebelage eingewebt ist, Vertiefungen oder Mulden, die entsprechende Markierungen im Papier hinterlassen. Paper machine clothing, in which the fabric layers are not through special binding threads, but through the so-called structural threads are interconnected are known (EP-A-44 053). Form in such paper machine clothing at the tie-down points, these are the places where the thread of one fabric layer is woven into another fabric layer is, depressions or depressions, the corresponding markings left in the paper.
Zur Verbesserung der Markierungseigenschaften werden bei einer Papiermaschinenbespannung der eingangs genannten Art (EP-A-69 101) jeder Querfaden durch ein Querfadenpaar gebildet, das abwechselnd in die obere Gewebelage eingebunden ist. An den Abbindestellen verlaufen die Querfäden eines solchen Paares sich kreuzend schräg nach unten, so daß die obere Gewebelage sehr stark nach unten gezogen wird und eine Mulde entsteht. An der Abbindestelle wird außerdem der Längsfaden der oberen Gewebelage nicht von unten durch einen Querfaden abgestützt, wie es an sich dem Bindungsmuster entsprechen würde. Der Längsfaden liegt daher an dieser Stelle besonders tief im Gewebe, was ebenfalls nachteilig für die Markierungseigenschaft ist. To improve the marking properties at a paper machine clothing of the type mentioned (EP-A-69 101) each transverse thread is formed by a pair of transverse threads, which is alternately integrated into the upper fabric layer. The transverse threads of one of these run at the tying points Couple crossing at an angle downwards, so that the upper fabric layer is pulled down very strongly and a hollow arises. The longitudinal thread is also used at the tying point the upper fabric layer not from below with a cross thread supported, as it corresponds to the binding pattern would. The longitudinal thread is therefore particularly important at this point deep in the tissue, which is also disadvantageous for the marking property is.
Aus der EP-A-80 686 ist ein doppellagiges Papiermaschinensieb bekannt, d. h. ein Papiermaschinensieb, das aus zwei Lagen von Schußfäden besteht, die mit einem einzigen System von Kettfäden verwoben sind. Eine geringe Markierung wird dabei dadurch erreicht, daß die Kettfäden so geführt werden, daß die Fasern der Papierbahn durch eine Flächenstruktur abgestützt werden, indem bei gleichen Konstruktionsmerkmalen die Kettfadenführung so verändert wird, daß sich eine Doppelkette ergibt. Wie in dieser Druckschrift auf S. 6, Z 17 bis 22 erwähnt wird, ergibt eine Doppelkette bei einlagigen Papiermaschinensieben keinen Vorteil. Dies muß analog auch für mehrlagige papiermaschinensiebe gelten, die auch als Kombination mehrerer einlagiger Gewebe angesehen werden können. EP-A-80 686 is a double-layer Paper machine wire known d. H. a paper machine screen, that from two layers of wefts that exists with a single system of Warp threads are interwoven. A low mark is achieved in that the warp threads so that the fibers of the paper web supported by a surface structure, by having the same design features the warp thread guide is changed so that results in a double chain. As in this publication on p. 6, lines 17 to 22 is mentioned a double chain for single-layer paper machine screens no advantage. This must also be done analogously for multi-layer paper machine screens that apply also as a combination of several single-layer fabrics can be viewed.
Die in Anspruch 1 angegebene Erfindung löst die Aufgabe, eine papiermaschinenbespannung der gattungsgemäßen Art bezüglich der Markierungseigenschaften zu verbessern. The invention specified in claim 1 solves the task of a paper machine clothing of the generic type with regard to the marking properties to improve.
Durch die erfindungsgemäße Ausbildung einer papiermaschinenbespannung wird die Kraft verringert, mit der an den Abbindestellen die obere Gewebelage nach unten gezogen wird und wird durch den " normal " geführten Faden eines Fadenpaares, der also an der Abbindestelle zwischen den Gewebelagen nicht in die andere Gewebelage eingewebt ist, die Struktur der papierseite aufrechterhalten. Due to the formation of a paper machine clothing will reduce the force with the upper one at the tying points Fabric layer is pulled and will through the "normal" thread of a Pair of threads, that is at the binding point between the fabric layers not in the other Fabric layer is woven into the structure of the paper side maintain.
Die Kraft, mit der an den Abbindestellen die beiden Gewebelagen zueinander hingezogen werden, kann weiter dadurch verringert werden, daß die doppelt ausgeführten Querfäden abwechselnd in die andere Gewebelage eingebunden sind. An einer Abbindestelle wird also der eine Querfaden eines Fadenpaares in die andere Gewebelage eingewebt, während an der nächsten Abbindestelle der andere Faden des paares eingewebt wird. The force with which the the two fabric layers are drawn towards each other, can be further reduced by the fact that the double threads cross alternately are integrated into the other fabric layer. At a tying point becomes the one cross thread a pair of threads in the other fabric layer woven in while at the next tying point the other thread of the pair is woven.
Um eine möglichst gleichmäßige Oberfläche der papierseite zu gewährleisten, sind vorzugsweise nicht nur diejenigen Querfäden doppelt ausgeführt, die in die andere Gewebelage eingewebt sind, sondern sind alle Querfäden doppelt ausgeführt. Es ergibt sich dabei der zusätzliche Vorteil, daß wesentlich mehr Stützpunkte für die Fasern der Papierbahn vorhanden sind, was ebenfalls die Papierqualität verbessert. To make the surface as even as possible the paper side are preferable not just double those cross threads executed, which are woven into the other fabric layer are, but all transverse threads are double executed. This results in the additional Advantage that significantly more bases for the Fibers of the paper web are present as well improves paper quality.
Die Papiermaschinenbespannung betrifft im allgemeinen den Blattbildungsbereich einer Papiermaschine, da hier die Markierungsgefahr in erster Linie gegeben ist. Die Papiermaschinenbespannung weist ferner im allgemeinen zwei Gewebelagen auf, wobei es die Querfäden der oberen Lage, also der Papierseite sind, die in Abständen auch in die untere Gewebelage, also die Laufseite, eingewoben sind. The paper machine clothing relates in general the sheet formation area of a paper machine, since here is the risk of marking in the first place Line is given. The paper machine clothing also generally has two layers of fabric on, being the cross threads of the top layer, So the paper side is at intervals too in the lower fabric layer, i.e. the running side, are woven.
Die beiden Einzelfäden der doppelt ausgeführten Querfäden haben vorzugsweise den gleichen Querschnitt. The two single threads of the double Cross threads preferably have the same Cross-section.
Bei einem Papiermaschinensieb nach dem Stand der Technik sind in der oberen Gewebelage die Querfäden mindestens genauso stark wie die Längsfäden und vorzugsweise sogar etwas stärker. Dies gilt auch für die erfindungsgemäße Papiermaschinenbespannung, wobei der Gesamtquerschnitt eines doppelt ausgeführten Querfadens zugrundezulegen ist. Ein doppelt ausgeführter Querfaden des erfindungsgemäßen Papiermaschinensiebes hat also etwa die gleiche Gesamtquerschnittsfläche wie ein Querfaden eines Papiermaschinensiebes nach dem Stand der Technik. Beim Aufteilen eines Querfadens der oberen Gewebelage in zwei Einzelfäden bleibt also die gesamte Querschnittsfläche vorzugsweise unverändert. Abweichungen von diesen Grundgedanken können unter Berücksichtigung des Fixiervorganges zweckmäßig sein, um die Monoplanität der oberen Gewebelage zu erreichen. Dies kann im Extremfall bedeuten, daß die Querschnittsfläche jedes Einzelfadens eines doppelt ausgeführten Querfadens nur 30% kleiner ist als die Querschnittsfläche der Längsfäden in der oberen Gewebelage. Insgesamt ergibt sich somit, daß die Querschnittsfläche jedes Einzelfadens eines doppelt ausgeführten Querfadens der oberen Gewebelage etwa zwischen 50 und 70% der Querschnittsfläche eines Längsfadens beträgt. Hat ein Längsfader z. B. einen Durchmesser von 0,18 mm so kann der doppelt ausgeführte Querfaden aus zwei Einzelfäden von jeweils zwischen 0,13 und 0,15 mm bestehen. For a paper machine after State of the art are in the upper fabric layer the cross threads at least as strong as that Longitudinal threads and preferably even a little stronger. This also applies to the invention Paper machine clothing, the total cross section of a double thread is to be taken as a basis. A double one Cross thread of the paper machine screen according to the invention thus has approximately the same total cross-sectional area like a cross thread of a paper machine screen According to the state of the art. When dividing a cross thread of the upper So the fabric layer in two individual threads remains total cross-sectional area preferably unchanged. Deviations from these basic ideas can take into account the fixing process be appropriate to monoplanarity to reach the upper fabric layer. This can in extreme cases mean that the cross-sectional area each single thread of a double thread Cross thread is only 30% smaller than that Cross-sectional area of the longitudinal threads in the upper fabric layer. Overall, it follows that the Cross-sectional area of each individual thread one double executed cross thread of the upper fabric layer approximately between 50 and 70% of the cross-sectional area of a longitudinal thread. Has a Longitudinal fader z. B. a diameter of 0.18 mm so the double thread can from two individual threads, each between 0.13 and 0.15 mm.
Die Abbindestellen, an denen einer der doppelt ausgeführten Querfäden der oberen Gewebelage mit den Längsfäden der unteren Gewebelage verwebt ist, liegen etwa zwischen drei und zwölf Längsfäden der oberen Gewebelage auseinander, und vorzugsweise liegen zwischen zwei Abbindestellen mindestens fünf Längsfäden der oberen Gewebelage, so daß die doppelt ausgeführten Querfäden vorzugsweise über mindestens fünf Längsfäden paarweise geführt sind, bevor sie sich an einer Abbindestelle teilen. Bei einem gering belasteten Papiermaschinensieb kann die Strecke, über die die doppelt ausgeführten Querfäden paarweise geführt sind, zehn bis zwölf Längsfäden betragen, während bei extrem hoch belasteten Papiermaschinensieben diese Strecke bis auf drei Längsfäden reduziert werden kann. The tie points where one of the double executed cross threads of the upper fabric layer with the longitudinal threads of the lower fabric layer is woven between about three and twelve Longitudinal threads of the upper fabric layer apart, and preferably lie between two tying points at least five longitudinal threads of the upper one Fabric layer so that the double executed Cross threads preferably over at least five Longitudinal threads are guided in pairs before they divide at a tying point. At a lightly loaded paper machine sieve can Distance over which the double threads run are conducted in pairs, ten to twelve Longitudinal threads amount to, while at extremely high loaded paper machine screens this route can be reduced to three longitudinal threads.
Wie üblich bei zweilagigen Papiermaschinensieben, ist die obere Gewebelage mit einer größeren Kettzahl und Schußzahl hergestellt als die untere Gewebelage, und zwar mit der doppelten Kettzahl und Schußzahl. Es sind jedoch auch andere Verhältnisse der Kettzahl und der Schußzahl möglich. Die Längsfäden und die Querfäden bestehen vorzugsweise aus Kunststoffdrähten, z. B. aus Polyester oder Polyamidmonofilamenten. In manchen Fällen werden jedoch auch Multifilamente verwendet. As usual with two-ply paper machine screens, is the upper fabric layer with a larger one Chain number and weft number made as that lower fabric layer, with double Warp number and weft number. However, there are also other ratios of the warp number and the weft number possible. The longitudinal threads and the transverse threads preferably consist of plastic wires, e.g. B. made of polyester or polyamide monofilaments. In some cases, however Multifilaments used.
Die einzelnen Gewebelagen können eine Leinwandbindung, Köperbindung oder Atlasbindung aufweisen oder davon abgeleitete Bindungen. Die obere Gewebelage, Papierseite, kann z. B. eine Leinwandbindung aufweisen, während die untere Gewebelage, Laufseite, eine Vierköperbindung mit langen auf der Laufseite sichtbaren Flottungen der Querfäden besitzen kann. The individual fabric layers can be a plain weave, Twill weave or satin weave have or derived bonds. The upper fabric layer, paper side, can e.g. Legs Plain weave, while the lower Fabric layer, running side, a four-twill weave with long floats visible on the barrel side who can have cross threads.
Die vorliegende Erfindung läßt sich in idealer Weise mit der Erfindung kombinieren, die Gegenstand der gleichzeitig eingereichten Patentanmeldung ist (= EP-A-144 529). In der unteren Gewebelage und in der oberen Gewebelage sind dann in gleicher Richtung verlaufende Fäden doppelt ausgeführt. Sind z. B. in der oberen Gewebelage die Querfäden doppelt ausgeführt, so wird derjenige Querfaden des Paares, der auch in die untere Gewebelage eingebunden ist, an jeder Abbindestelle zwischen den doppelt ausgeführten Querfäden der unteren Gewebelage und dem an der Abbindung beteiligten Längsfaden eingeschlossen und dadurch dem Abrieb nahezu vollständig entzogen. Der Querfaden der oberen Gewebelage, der auch in die untere Gewebelage eingewebt ist, tritt dabei an die Stelle eines Binde-Querfadens dieser gleichzeitig eingereichten Patentanmeldung (= EP-A-144 529). The present invention is more ideal Combine way with the invention, the subject the simultaneously filed patent application is (= EP-A-144 529). In the lower fabric layer and in the upper fabric layer are in threads running in the same direction are duplicated. Are z. B. in the upper fabric layer Cross threads run twice, so the one Cross thread of the pair, also in the lower Fabric layer is integrated at every tying point between the double threads the lower fabric layer and the one on the Tying involved longitudinal thread included and thereby the abrasion almost completely withdrawn. The cross thread of the upper fabric layer, which is also woven into the lower fabric layer takes the place of a binding cross thread of this simultaneously filed patent application (= EP-A-144 529).
Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung erläutert. Die einzige Figur zeigt einen Schnitt in Querrichtung eines zweilagigen Papiermaschinensiebes. An embodiment of the invention will explained below with reference to the drawing. The only figure shows a cross-section of a two-layer paper machine screen.
Querfäden 1 und Längsfäden 2 bilden zusammen die obere Gewebelage 3 der Papiermaschinenbespannung oder des Papiermaschinensiebes. Sie sind in einer Leinwandbindung miteinander verwebt. Längsfäden 5 und Querfäden 6 bilden die untere Gewebelage 4, welche ebenfalls m Leinwandbindung gewoben wurden. Cross threads 1 and longitudinal threads 2 form together the upper fabric layer 3 of the paper machine clothing or the paper machine screen. They are in a plain weave with each other interwoven. Longitudinal threads 5 and transverse threads 6 form the lower fabric layer 4, which also m woven in plain weave.
Die obere Gewebelage 3 besitzt die doppelte Anzahl von Längsfäden und Querfäden wie die untere Gewebelage 4 und die Längsfäden 2 und die Querfäden 1 der oberen Gewebelage 3 sind wesentlich dünner als die der unteren Gewebelage 4. The upper fabric layer 3 has double Number of longitudinal threads and cross threads like that lower fabric layer 4 and the longitudinal threads 2 and the transverse threads 1 of the upper fabric layer 3 are much thinner than that of the lower fabric layer 4th
Die Querfäden 1 der oberen Gewebelage 3 sind doppelt ausgeführt. d. h. statt eines Querfadens ist ein Querfadenpaar eingewebt. Die beiden Querfäden 1 eines Paares haben mit Ausnahme der Abbindestelle 7 den gleicnen Verlauf. An der Abbindestelle 7 ist ein Querfaden 1a des Paares in die untere Gewebelage 4 eingebunden, während der andere Querfaden 1b in der oberen Gewebelage 3 verbleibt. An der Abbindestelle 7 trennen sich also die beiden Querfäden 1a und 1b eines Querfadenpaares. An der nächsten Abbindestelle (nicht dargestellt) ist vorzugsweise der andere Querfaden 1b in die untere Gewebelage 4 eingewebt, die Funktion der beiden Querfäden 1a und 1b ist also an jeder Abbindestelle 7 vertauscht. The cross threads 1 of the upper fabric layer 3 are executed twice. d. H. instead of a cross thread a pair of transverse threads is woven. The two Except for cross threads 1 of a pair the tie point 7 the same course. At the Tie point 7 is a cross thread 1a of the pair in the lower fabric layer 4 incorporated while the other cross thread 1b in the upper fabric layer 3 remains. Separate at tie point 7 So the two transverse threads 1a and 1b one Cross thread pair. At the next tying point (not shown) is preferably the other Cross thread 1b woven into the lower fabric layer 4, the function of the two transverse threads 1a and 1b is therefore interchanged at each tying point 7.
Wie man in der Figur erkennt, setzt der Querfaden 1b das Bindungsmuster an der Abbindestelle 7 ohne Unterbrechung fort. Er deckt sozusagen die Abbindestelle 7 ab. Dadurch, daß an der Abbindestelle 7 jeweils nur ein Querfaden eines Paares in die untere Gewebelage 4 eingebunden ist, entstehen an den Abbindestellen 7 außerdem wesentlich geringere Vertiefungen oder Mulden. Beide Effekte zusammen verbessern die Markierungseigenschaften des Papiermaschinensiebes. As you can see in the figure, the cross thread sets 1b the binding pattern at the tying point 7 continues without interruption. It covers, so to speak the tying point 7. The fact that at the Tie point 7 only one cross thread each Couple integrated in the lower fabric layer 4 is, arise at the tie points 7 also much smaller depressions or hollows. Both effects together improve the marking properties of the paper machine screen.
Der Grundgedanke der Erfindung ist in analoger Weise auch auf Längsfäden anwendbar. The basic idea of the invention is analog Way also applicable to longitudinal threads.
Das Papiermaschinensieb besteht aus zwei Gewebelagen 3, 4, die jede für sich aus eigenen Kunststoffdrähten offen gewoben sind, und zwar die obere Gewebelage 3 aus Kettdrähten 2 und Schußdrähten 1 und die untere Gewebelage 4 aus Kettdrähten 5 und Schußdrähten 6. The paper machine screen consists of two layers of fabric 3, 4, each for its own Plastic wires are woven open, namely the upper fabric layer 3 from warp wires 2 and Weft wires 1 and the lower fabric layer 4 Warp wires 5 and weft wires 6.
Die obere Gewebelage 3 besitzt Leinwandbindung und weist eine Kettdrahtdichte von 29 Drähten je cm bei einem Kettdrahtdurchmesser von 0,18 mm auf. Die Kettdrähte bestehen aus Trevira-Monofil Type 940. The upper fabric layer 3 has a plain weave and has a warp wire density of 29 wires per cm with a warp wire diameter of 0.18 mm. The warp wires are made of Trevira monofilament Type 940.
Die Schußdrähte 1 sind doppelt ausgeführt, bei einer Schußdrahtdichte von 26 Drahtpaaren je cm oder 52 Einzeldrähten je cm. Alle Schußdrähte der oberen Gewebelage sind doppelt ausgeführt und bestehen aus Trevira-Monofil Type 900 bei einem Durchmesser von 0,13 mm (Einzeldraht). The weft wires 1 are double, at a weft wire density of 26 wire pairs per cm or 52 individual wires per cm. All weft wires the upper fabric layer is double and are made of Trevira monofilament Type 900 a diameter of 0.13 mm (single wire).
Die untere Gewebelage besitzt ebenfalls Leinwandbindung. Die Kettzahl beträgt 14,5 Kettfäden je cm bei einem Durchmesser von 0,27 mm. Die Kettfäden bestehen aus Trevira-Monofil Type 940. Die Schußdrähte der unteren Gewebelage haben eine Dichte von 13 Fäden je cm, haben einen Durchmesser von 0,30 mm und bestehen abwechselnd aus Trevira-Monofil Type 900 und Polyamid-6.6-Monofil. The lower fabric layer also has a plain weave. The number of warps is 14.5 warps per cm with a diameter of 0.27 mm. The Warp threads are made from Trevira Monofil Type 940. Have the weft wires of the lower fabric layer a density of 13 threads per cm, have one Diameter of 0.30 mm and alternate made of Trevira monofilament type 900 and polyamide 6.6 monofilament.
Die beiden Gewebelagen sind dadurch verbunden, daß in regelmäßigen Abständen ein Schußdraht bei einem Schußdrahtpaar der oberen Gewebelage den Kettdraht der unteren Gewebelage umschlingt. Diese Abbindung findet bei jedem achten Kettdraht der oberen Gewebelage bzw. bei jedem vierten Kettdraht der unteren Gewebelage statt, so daß die Einzeldrähte jedes Schußdrahtpaares über eine Strecke von 7 Kettdrähten der oberen Gewebelage gemeinsam verlaufen. The two layers of fabric are connected that a weft wire at regular intervals for a pair of weft wires in the upper fabric layer the warp wire of the lower fabric layer wraps around. This binding takes place in everyone eighth warp wire of the upper fabric layer or every fourth warp wire of the lower fabric layer instead, so that the individual wires of each pair of weft wires over a distance of 7 warp wires the upper fabric layer run together.
In Längsrichtung ist jedes achte Schußdrahtpaar der oberen Gewebelage an der Abbindung beteiligt. d. h. die dazwischen liegenden 7 Schußdrahtpaare der oberen Gewebelage sind niemals mit den Kettdrähten der unteren Gewebelage abgebunden. Bei jedem achten Schußdrahtpaar ist einer der Einzeldrähte mit dem Kettdraht der unteren Gewebelage abgebunden, während der andere Schußdraht des Paares die normale Gewebebindung unbeeinflußt fortsetzt, wodurch die Bildung einer Mulde oder Vertiefung an dieser Abbindestelle 7 vermieden wird. In the longitudinal direction is every eighth pair of weft wires the upper fabric layer on the binding involved. d. H. the 7 weft wire pairs in between the upper fabric layer are never with the warp wires of the lower fabric layer tied. Every eighth pair of weft wires is one of the single wires with the warp wire lower fabric layer tied off during the other weft wire of the pair the normal weave continues unaffected, causing the Formation of a depression or depression on it Tie point 7 is avoided.
Die Abbindestellen der einzelnen Schußdrahtpaare sind gegeneinander versetzt, d. h. die Abbindestelle des ersten Schußdrahtpaares und des achten Schußdrahtpaares befinden sich nicht unter dem gleichen Kettdraht der oberen Gewebelage. The binding points of the individual weft wire pairs are offset from each other, d. H. the tying point of the first pair of weft wires and the eighth weft wire pairs are not under the same warp wire of the upper fabric layer.
Das fertige Gewebe wird mit einer schmutzabweisenden Ausrüstung versehen. The finished fabric is covered with a dirt repellent Equip equipment.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT84109663T ATE38534T1 (en) | 1983-08-17 | 1984-08-14 | CLOTHING FOR PAPER MACHINES. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3329740A DE3329740C2 (en) | 1983-08-17 | 1983-08-17 | Two- or multi-layer fabric as a covering for the sheet forming part of a paper machine |
| DE3329740 | 1983-08-17 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP0144530A2 EP0144530A2 (en) | 1985-06-19 |
| EP0144530A3 EP0144530A3 (en) | 1985-07-03 |
| EP0144530B1 EP0144530B1 (en) | 1988-11-09 |
| EP0144530B2 true EP0144530B2 (en) | 1991-03-13 |
Family
ID=6206793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84109663A Expired - Lifetime EP0144530B2 (en) | 1983-08-17 | 1984-08-14 | Screen-cloth for a paper-making machine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0144530B2 (en) |
| AT (1) | ATE38534T1 (en) |
| DE (2) | DE3329740C2 (en) |
Families Citing this family (45)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3600530A1 (en) * | 1986-01-10 | 1987-07-16 | Wangner Gmbh Co Kg Hermann | USE OF A PAPER MACHINE TREATMENT FOR THE PRODUCTION OF TISSUE PAPER OR POROESE FLEECE AND THEREFORE SUITABLE PAPER MACHINE TENSIONING |
| DE8617619U1 (en) * | 1986-07-02 | 1987-01-15 | Vorwerk & Co Interholding Gmbh, 5600 Wuppertal | Housing component made of laminated multi-layer fabric |
| AT385533B (en) * | 1986-08-04 | 1988-04-11 | Hutter & Schrantz Ag | TWO-LAYER PAPER MACHINE SCREEN |
| FI81624C (en) * | 1988-12-08 | 1990-11-12 | Tamfelt Oy Ab | PAPPERSMASKINDUK. |
| DE3903198C2 (en) * | 1989-02-03 | 1999-11-18 | Kufferath Andreas Gmbh | Multi-layer screen fabric of a paper machine |
| US5052448A (en) * | 1989-02-10 | 1991-10-01 | Huyck Corporation | Self stitching multilayer papermaking fabric |
| DE3923938A1 (en) * | 1989-07-19 | 1991-01-31 | Oberdorfer Fa F | FORMING FABRICS FOR THE WET SECTION OF A PAPER MACHINE |
| US5025839A (en) * | 1990-03-29 | 1991-06-25 | Asten Group, Inc. | Two-ply papermakers forming fabric with zig-zagging MD yarns |
| GB9115120D0 (en) * | 1991-07-13 | 1991-08-28 | Scapa Group Plc | Improvements to papermakers and like fabrics |
| 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 |
| BE1007226A3 (en) * | 1993-06-17 | 1995-04-25 | Wiele Michel Van De Nv | Producing double piece pole tissue with double or multiple weft input - comprises formation of upper and lower tissues contg. parallel adjacent gps. of superimposed weft threads. |
| US5709250A (en) * | 1994-09-16 | 1998-01-20 | Weavexx Corporation | Papermakers' forming fabric having additional fiber support yarns |
| US5518042A (en) * | 1994-09-16 | 1996-05-21 | Huyck Licensco, Inc. | Papermaker's forming fabric with additional cross machine direction locator and fiber supporting yarns |
| US5983953A (en) * | 1994-09-16 | 1999-11-16 | Weavexx Corporation | Paper forming progess |
| US5482567A (en) * | 1994-12-06 | 1996-01-09 | Huyck Licensco, Inc. | Multilayer forming fabric |
| AT404142B (en) * | 1996-09-18 | 1998-08-25 | Tiroler Loden Gmbh | FABRIC FOR PRODUCING CLOTHING AND METHOD FOR PRODUCING SUCH A FABRIC |
| US5937914A (en) * | 1997-02-20 | 1999-08-17 | Weavexx Corporation | Papermaker's fabric with auxiliary yarns |
| US5967195A (en) * | 1997-08-01 | 1999-10-19 | Weavexx Corporation | Multi-layer forming fabric with stitching yarn pairs integrated into papermaking surface |
| US6112774A (en) * | 1998-06-02 | 2000-09-05 | Weavexx Corporation | Double layer papermaker's forming fabric with reduced twinning. |
| 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 |
| US6179013B1 (en) | 1999-10-21 | 2001-01-30 | Weavexx Corporation | Low caliper multi-layer forming fabrics with machine side cross machine direction yarns having a flattened cross section |
| US6585006B1 (en) | 2000-02-10 | 2003-07-01 | Weavexx Corporation | Papermaker's forming fabric with companion yarns |
| US6244306B1 (en) | 2000-05-26 | 2001-06-12 | Weavexx Corporation | Papermaker's forming fabric |
| US6253796B1 (en) | 2000-07-28 | 2001-07-03 | Weavexx Corporation | Papermaker's forming fabric |
| JP4291579B2 (en) * | 2001-04-04 | 2009-07-08 | ハバシット アクチエンゲゼルシャフト | Belt comprising a fabric having two fabric layers |
| US6745797B2 (en) | 2001-06-21 | 2004-06-08 | Weavexx Corporation | Papermaker's forming fabric |
| NO333373B1 (en) * | 2002-05-24 | 2013-05-13 | Nippon Filcon Kk | Industrial tolys fabric |
| US6860969B2 (en) | 2003-01-30 | 2005-03-01 | Weavexx Corporation | Papermaker's forming fabric |
| US6837277B2 (en) | 2003-01-30 | 2005-01-04 | Weavexx Corporation | Papermaker's forming fabric |
| US6896009B2 (en) | 2003-03-19 | 2005-05-24 | Weavexx Corporation | Machine direction yarn stitched triple layer papermaker's forming fabrics |
| US7059357B2 (en) | 2003-03-19 | 2006-06-13 | Weavexx Corporation | Warp-stitched multilayer papermaker's fabrics |
| AU2004288913B2 (en) * | 2003-11-06 | 2009-09-17 | Hexcel Corporation | Interlock double weave fabric and methods of making and using the same |
| US7243687B2 (en) | 2004-06-07 | 2007-07-17 | Weavexx Corporation | Papermaker's forming fabric with twice as many bottom MD yarns as top MD yarns |
| US7195040B2 (en) | 2005-02-18 | 2007-03-27 | Weavexx Corporation | Papermaker's forming fabric with machine direction stitching yarns that form machine side knuckles |
| US7484538B2 (en) | 2005-09-22 | 2009-02-03 | Weavexx Corporation | Papermaker's triple layer forming fabric with non-uniform top CMD floats |
| US7219701B2 (en) | 2005-09-27 | 2007-05-22 | Weavexx Corporation | Papermaker's forming fabric with machine direction stitching yarns that form machine side knuckles |
| US7275566B2 (en) | 2006-02-27 | 2007-10-02 | Weavexx Corporation | Warped stitched papermaker's forming fabric with fewer effective top MD yarns than bottom MD yarns |
| US7580229B2 (en) | 2006-04-27 | 2009-08-25 | Hitachi Global Storage Technologies Netherlands B.V. | Current-perpendicular-to-the-plane (CPP) magnetoresistive sensor with antiparallel-free layer structure and low current-induced noise |
| US7487805B2 (en) | 2007-01-31 | 2009-02-10 | Weavexx Corporation | Papermaker's forming fabric with cross-direction yarn stitching and ratio of top machined direction yarns to bottom machine direction yarns of less than 1 |
| US7624766B2 (en) | 2007-03-16 | 2009-12-01 | Weavexx Corporation | Warped stitched papermaker's forming fabric |
| US20090183795A1 (en) | 2008-01-23 | 2009-07-23 | Kevin John Ward | Multi-Layer Papermaker's Forming Fabric With Long Machine Side MD Floats |
| US7766053B2 (en) | 2008-10-31 | 2010-08-03 | Weavexx Corporation | Multi-layer papermaker's forming fabric with alternating paired and single top CMD yarns |
| US8251103B2 (en) | 2009-11-04 | 2012-08-28 | Weavexx Corporation | Papermaker's forming fabric with engineered drainage channels |
| FI20155918A7 (en) * | 2015-12-04 | 2017-06-05 | Valmet Technologies Oy | Paper machine fabric |
| JP7083658B2 (en) * | 2018-02-15 | 2022-06-13 | 日本フイルコン株式会社 | Industrial double-layer woven fabric |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2209874A (en) * | 1939-10-05 | 1940-07-30 | Roland L Dempsey | Drier felt |
| US2423910A (en) * | 1944-04-26 | 1947-07-15 | Southern Friction Materials Co | Woven fabric |
| FR1153346A (en) * | 1955-09-23 | 1958-03-05 | Scapa Dryers Ltd | Process for manufacturing a relatively non-electrostatic industrial textile fabric and in particular a dryer felt usable in the manufacture of paper |
| GB810603A (en) * | 1955-09-23 | 1959-03-18 | Scapa Dryers Ltd | Improvements in or relating to papermakers' dryer felts |
| US4314589A (en) * | 1978-10-23 | 1982-02-09 | Jwi Ltd. | Duplex forming fabric |
| US4344464A (en) * | 1980-07-11 | 1982-08-17 | Huyck Corporation | Endless forming fabrics with bi-crimp characteristics |
| DE3146385C2 (en) * | 1981-11-23 | 1985-10-31 | Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen | Double-layer fabric as a covering for paper machines |
| DE3301810C2 (en) * | 1983-01-20 | 1986-01-09 | Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen | Composite fabric as a covering for the sheet forming part of a paper machine |
-
1983
- 1983-08-17 DE DE3329740A patent/DE3329740C2/en not_active Expired
-
1984
- 1984-08-14 AT AT84109663T patent/ATE38534T1/en not_active IP Right Cessation
- 1984-08-14 EP EP84109663A patent/EP0144530B2/en not_active Expired - Lifetime
- 1984-08-14 DE DE8484109663T patent/DE3475089D1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| EP0144530A2 (en) | 1985-06-19 |
| DE3329740A1 (en) | 1985-03-07 |
| DE3475089D1 (en) | 1988-12-15 |
| EP0144530B1 (en) | 1988-11-09 |
| ATE38534T1 (en) | 1988-11-15 |
| DE3329740C2 (en) | 1986-07-03 |
| EP0144530A3 (en) | 1985-07-03 |
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