EP1565613B1 - Papermaking screen - Google Patents
Papermaking screen Download PDFInfo
- Publication number
- EP1565613B1 EP1565613B1 EP03811353A EP03811353A EP1565613B1 EP 1565613 B1 EP1565613 B1 EP 1565613B1 EP 03811353 A EP03811353 A EP 03811353A EP 03811353 A EP03811353 A EP 03811353A EP 1565613 B1 EP1565613 B1 EP 1565613B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fabric
- weft
- yarn
- binder
- warp
- 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 claims abstract description 91
- 239000011230 binding agent Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 5
- 239000004952 Polyamide Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 239000002131 composite material Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 230000006735 deficit Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S162/00—Paper making and fiber liberation
- Y10S162/90—Papermaking press felts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S162/00—Paper making and fiber liberation
- Y10S162/903—Paper forming member, e.g. fourdrinier, sheet forming member
Definitions
- the invention relates to a papermaking machine according to the feature configuration of the preamble of claim 1.
- the sheet forming unit is usually designed as a twin-wire former, in many cases as a gap former. Characteristic of the machines is that the sheet forming operation takes place immediately between two paper machine wires in a relatively short dewatering zone. Due to this short distance and the high production speed, the time for sheet formation is reduced to a few milliseconds. During this period, the solids content or dry content of the pulp suspension must be increased from about 1% to about 20%. This means for the paper machine screens that they have to have a very high dewatering performance, but still no marks in the paper and provide a high fiber support.
- the one solution is characterized in that the two individual fabric layers are joined together by means of a weft or transverse thread.
- Another solution provides that the connection is made by means of a longitudinal or warp thread. Especially if you want to use different chain diameter on the run and the paper side, these known approaches are no longer in question.
- the binding threads additionally used change the very homogeneous upper side, which in practice leads in part to unwanted markings in the paper.
- the binding threads are always thinner, but this has the disadvantage that the durability for the connection of the individual layers of fabric decreases accordingly. Furthermore, it has been found in practical use that it can lead to "looping" of the binding weft threads, which leads to the separation of the individual layers and the fabric can be unusable.
- a generic papermaking fabric in the form of a composite fabric is known, in particular for the sheet forming zone, consisting of at least two superimposed screen fabrics, which are formed at least one ply and connected by transverse in and / or longitudinal direction binding threads, wherein one of the mesh as a definition fabric with the mechanical Characteristics of the composite fabric in terms of elongation and stiffness-determining training and the other screen fabric is designed as a reaction fabric with a higher elongation and lower stiffness than the definition fabric.
- the invention has the object to avoid the disadvantages described in the prior art help, in particular to create a paper machine screen, which is characterized by high strength values, in particular has a high degree of transverse stability and offers comparable drainage performance, as the known solutions and the formation of markings in the paper helps avoid.
- a problem solves a papermaking machine with the features of claim 1 in its entirety.
- the warp threads are supported from below by the associated weft thread of the single fabric of the paper side at the points where they are pulled through the binding thread into the fabric interior.
- a material for the upper part (paper side) which supports the transverse stability of the fabric.
- a polyester material whereas in the above-mentioned known solutions when using a pair of binding shot, both materials are the same type and with respect to the layer connection to optimize, usually find use polyamides.
- the number of binding sites ie the contact between the binding weft and upper or lower chain of the paper side and running side, does not decrease compared to the known solutions.
- the diameter of the binding thread corresponds to that of the upper weft, which leads to a high strength of the connection between the fabric layers.
- the known in the prior art detectable solution according to the Fig. 1 consists of the paper machine screen of two individual fabrics, looking in the direction of the Fig. 1 seen, the upper single tissue or upper tissue forms the paper side and the underlying single tissue represents the running side or the lower tissue.
- the upper single tissue consists from a set of weft threads 2 as upper weft threads and warp threads 1 as Oberkettfäden.
- the underlying running side is also formed from a set of wefts 6 as Unterschußfäden and warp threads 5 as Unterkettfäden.
- the known solution has a plain weave and the lower fabric is, based on a repeat as a five-shaft fabric.
- the Fig. 1 consists of the paper machine screen of two individual fabrics, looking in the direction of the Fig. 1 seen, the upper single tissue or upper tissue forms the paper side and the underlying single tissue represents the running side or the lower tissue.
- the upper single tissue consists from a set of weft threads 2 as upper
- binding weft thread 3 shows the two individual fabrics are connected to each other via a binding weft thread 3, wherein in the drawing plane and out of this a plurality of pertinent binding weft threads 3 (not shown) are arranged in sequence and thus produce the necessary connection of the individual fabric layers for the papermaking fabric.
- the binding threads 3 are used in the direction of the fabric in front of and behind the upper weft threads 2 used to establish the connection of the individual fabric layers, so that thereby the actually very homogeneous top of the paper side of the screen is adversely affected such that it is in the Practice may come to unwanted marks in the paper.
- the known binding weft yarns 3 disturb as little as possible, they are always thinner, so that it can come to the separation of the individual fabric layers when using the known paper machine fabrics and thus to a failure of the screen as such.
- Fig. 3 shows a detail of the top view of the top or paper side of the paper machine wire according to the invention and the section AA according to Fig. 4 refers to the view of the upper shot without binding shot, whereas the section BB the view of the upper shot with binding shot after the Fig. 3 concerns.
- FIG. 5 shows how the connection of the two single fabric layers for paper and running side is realized by binding threads 3, of which exemplified in Fig. 5 shown in detail the course of such a binding thread 3, which is completely integrated into the fabric structure on the paper side, in which overlaps on the paper side at defined locations of the respective binder thread 3 the assignable warp threads 1 of the individual fabric, at least on its opposite side a weft thread 2 of this individual fabric are under attack.
- This encroachment or attack is in the Fig. 5 represented by the reference numerals 7 and 8.
- the binding point is supported by the opposite side, so as to ensure that this on one level with the other shot - And warp threads 4 and 1 remains.
- the upper weft thread 2 thus also runs evenly at the point at which a weave is made without being integrated into the lower weave. Only at the points where the binding shot 3 runs over the upper chain, a short exchange of upper 2 and binding shot 3 is made.
- the inventively designed binding solution based on a repeat as a five-shaft binding provides that four warp threads 5 are engaged by the weft threads 6 of the lower weave and a warp thread 5 is overlapped in succession, the respective binding weft thread 3 rising obliquely from the lower weave into the upper fabric at the location of this overlap 9 replaced.
- the respective binding weft thread 3 has substantially the same diameter as the respective weft thread 2 of the single fabric on the paper side.
- the warp threads 5 and the weft threads 6 of the lower fabric that is, on the running side, each have a larger diameter in diameter than the assignable thread systems on the upper or paper side of the papermachine fabric.
- the respective overlap 7 of the respective binding thread 3 is separated in relation to a weft thread 2 from three intermediate warp threads 1, wherein at the location of the middle warp thread 1 of this group of three the binding thread 3 forms an underlying warp thread 5 shortly before the encroachment 9 engages under the sub-shot 6.
- the upper weft 4 after the Fig. 4 corresponds to its embodiment of the upper weft thread 2 with previously shown binding weft thread 3.
- the different numbering was chosen only to be in the representation of the Fig. 3 to achieve a better understanding of the tissue pattern in the plan view.
- this embodiment corresponds largely to the first embodiment described first; only in place of a five-shaft underside a four-shaft binding was used here for the lower fabric or the lower side (running side).
- the warp thread 1 overlapped by the binder thread 3 and undercut by the upper weft thread 2 is in turn supported by a vertically underlying warp thread 5 of the lower fabric, the lower weft thread 6 extending above the lower warp thread 5 at the support point.
- the binding of the binding thread 3 is then carried out for the lower fabric in the range of three successive Unterkettfäden 5, wherein the middle Unterkettfaden 5 of a triad of the binding yarn 3 and the two adjacent Unterkettfäden 5 are so overlapped by the binder yarn 3.
- the roof-like configuration in the region of the overlap 7 for the upper warp thread 1 is then in a parallel arrangement its equivalent, in the underlying overlap 9 of the supporting Unterkettfadens 5 through the lower weft thread. 6
Landscapes
- Paper (AREA)
- Woven Fabrics (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Glass Compositions (AREA)
- Developing Agents For Electrophotography (AREA)
- Storage Of Web-Like Or Filamentary Materials (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
Die Erfindung betrifft ein Papiermaschinensieb gemäß der Merkmalsausgestaltung des Oberbegriffes des Patentanspruches 1.The invention relates to a papermaking machine according to the feature configuration of the preamble of
In der papiererzeugenden Industrie werden heute immer mehr Hochleistungs-Papiermaschinen mit Geschwindigkeiten bis zu 2000 m/min und Arbeitsbreiten über 10 m eingesetzt. Die Blattbildungseinheit ist dabei in aller Regel als Doppelsiebformer ausgeführt, in vielen Fällen auch als Spaltformer. Charakteristisch für die Maschinen ist, dass der Blattbildungsvorgang sofort zwischen zwei Papiermaschinensieben in einer relativ kurzen Entwässerungszone stattfindet. Durch diese kurze Strecke und die hohe Produktionsgeschwindigkeit reduziert sich die Zeit für die Blattbildung auf einige Millisekunden. In diesem Zeitraum muß der Feststoffanteil bzw. Trockengehalt der Faserstoffsuspension von ca. 1 % auf etwa 20 % angehoben werden. Das bedeutet für die Papiermaschinensiebe, dass sie eine sehr hohe Entwässerungsleistung besitzen müssen, aber trotzdem keine Markierungen im Papier hinterlassen dürfen und eine hohe Faserunterstützung bieten.Today, more and more high-performance paper machines with speeds up to 2000 m / min and working widths over 10 m are used in the paper-producing industry. The sheet forming unit is usually designed as a twin-wire former, in many cases as a gap former. Characteristic of the machines is that the sheet forming operation takes place immediately between two paper machine wires in a relatively short dewatering zone. Due to this short distance and the high production speed, the time for sheet formation is reduced to a few milliseconds. During this period, the solids content or dry content of the pulp suspension must be increased from about 1% to about 20%. This means for the paper machine screens that they have to have a very high dewatering performance, but still no marks in the paper and provide a high fiber support.
Ein weiterer wichtiger Punkt ist die Querstabilität der Siebbespannung, die maßgebend ist für die Gleichmäßigkeit des Dicken- und Feuchtigkeitsprofils der Papierbahn. Gerade bei den modernen Maschinen mit großen Arbeitsbreiten sind die diesbezüglichen Anforderungen sehr hoch angesetzt. Zur Verbesserung der Formation werden in der Blattbildungszone mithin immer häufiger Formierleisten eingesetzt, die wechselseitig auf den Laufseiten der Siebe angeordnet sind und gegen diese gedrückt werden. Dadurch kommt es zu einer schnell wechselnden, in Längsrichtung verlaufenden Durchbiegung der Bespannung der Siebe.Another important point is the transverse stability of the screen covering, which is decisive for the uniformity of the thickness and moisture profile of the paper web. Especially in the modern machines with large working widths, the relevant requirements are set very high. In order to improve the formation, forming strips are therefore increasingly used in the sheet-forming zone, which are mutually arranged on the running sides of the wires and pressed against them. This leads to a rapidly changing, longitudinally extending deflection of the fabric of the screens.
Um diesen Anforderungen gerecht zu werden und, um insbesondere eine Verbindung der Einzelgewebe der Papierseite und der Laufseite miteinander zu erreichen, existieren im Stand der Technik grundsätzlich zwei unterschiedliche Lösungsansätze. Die eine Lösung ist dadurch charakterisiert, dass die beiden Einzelgewebelagen mittels eines Schuß- oder Querfadens miteinander verbunden werden. Eine andere Lösung sieht vor, dass die Verbindung mittels eines Längs- oder Kettfadens erfolgt. Vor allem wenn man unterschiedliche Kettdurchmesser auf der Lauf- und der Papierseite einsetzen will, kommen diese bekannten Ansätze jedoch nicht mehr in Frage.In order to meet these requirements and, in particular, to achieve a connection of the individual fabrics of the paper side and the running side with one another, there are basically two different approaches to solution in the prior art. The one solution is characterized in that the two individual fabric layers are joined together by means of a weft or transverse thread. Another solution provides that the connection is made by means of a longitudinal or warp thread. Especially if you want to use different chain diameter on the run and the paper side, these known approaches are no longer in question.
Soll demgemäß die Ausbildung der beiden Einzelgewebe speziell auf eine feine Papierseite mit dünnen Durchmessern und eine grobe Laufseite mit dicken Durchmessern ausgerichtet sein, um dergestalt zu hohen Stabilitätswerten zu kommen, muß die Verbindung beider Lagen durch einen Schuß, insbesondere Bindeschuß erfolgen. Auch hierfür bietet der Stand der Technik entsprechende Vorschläge.If, accordingly, the formation of the two individual fabrics should be specially aligned on a fine paper page with thin diameters and a coarse running side with thick diameters in order to achieve such high stability values, the connection of both layers by a shot, in particular binding shot done. Again, the prior art offers appropriate proposals.
So besteht die Möglichkeit beide Einzelgewebe durch einen zusätzlichen Binde- oder Heftfaden, der weder in das Bindungsbild des Obergewebes (Papierseite) noch des Untergewebes (Laufseite) gehört, miteinander zu verweben. Eine solche Lösung ist beispielsweise durch das Papiermaschinensieb der
Bei solchen bekannten Lösungen verändern die zusätzlich verwendeten Bindefäden die an sich sehr homogene Oberseite, was in der Praxis teilweise zu ungewollten Markierungen im Papier führt. Um dem zu begegnen werden die Bindefäden immer dünner ausgebildet, was jedoch den Nachteil hat, dass die Dauerhaltbarkeit für die Verbindung der einzelnen Gewebelagen entsprechend abnimmt. Ferner hat es sich beim praktischen Einsatz gezeigt, dass es zum "Durchschleifen" der Bindeschußfäden kommen kann, was zur Trennung der Einzellagen führt und das Gewebe unbrauchbar werden läßt.In such known solutions, the binding threads additionally used change the very homogeneous upper side, which in practice leads in part to unwanted markings in the paper. To counter this, the binding threads are always thinner, but this has the disadvantage that the durability for the connection of the individual layers of fabric decreases accordingly. Furthermore, it has been found in practical use that it can lead to "looping" of the binding weft threads, which leads to the separation of the individual layers and the fabric can be unusable.
Bei einer anderen bekannten Lösung werden komplette Oberschüsse durch Paare von bindenden Strukturfäden ersetzt. Dabei kann in Abhängigkeit des gewählten Gewebetypes das Verhältnis von echten Oberschüssen durch Schuß- oder Kettfäden zu den Bindeschußpaaren variieren. So sind durch die PCT-Veröffentlichungen
Trotz der guten Verbindung der beiden Einzelgewebe miteinander besteht bei diesen bekannten Lösungen ein wesentlicher Nachteil darin, dass an den Kreuzungspunkten der Bindeschüsse die Oberkette der Papierseite nicht unterstützt wird. Betrachtet man bei diesen bekannten Lösungen den Verlauf eines "vollständigen" Oberschusses, so erkennt man, dass durch die alternierende Bindung von Oberschuß und Oberkette beide Fäden auf einem Höhenniveau liegen, mit der Folge, dass sowohl die Kett- als auch die Schußverkröpfungen in einer Ebene liegen. Durch den Einsatz der Bindepaare fehlt nun diese Unterstützung an allen Kreuzungsstellen und alle Fäden nehmen die hauptsächlichen Kräfte entlang ihrer jeweiligen Längsachse auf, die an den Kreuzungsstellen in das Gewebeinnere zeigt. Dieser Nachteil der fehlenden Unterstützung entsteht insbesondere dann, wenn Oberschuß und Bindepaar in alternierender Folge eingesetzt werden, also beispielsweise ein vollständiger Oberschuß einem Bindepaar folgt und darauf wieder ein Oberschuß. Um dann die bevorzugt bekannte Leinwandbindung zu realisieren, muß der nächstfolgende Oberschuß über den Kettfaden verlaufen, der zuvor über dem Kreuzungspunkt lag, und wird dadurch zusätzlich in das Gewebeinnere gezogen. Dies führt dazu, dass entweder jeder zweite Oberkettfaden tiefer im Gewebe liegt oder keiner der Kettfäden auf dem Niveau der Schußfäden liegen kann. Dies führt zu einem ungleichmäßigen Gewebeverlauf auf der Papierseite, was zu unerwünschten Markierungen im Papier führen kann.Despite the good connection of the two individual fabrics together, a major disadvantage of these known solutions is that the upper chain of the paper side is not supported at the crossing points of the binding shots. Looking at the course of a "complete" upper weft in these known solutions, it can be seen that both threads are at a height level due to the alternating binding of the upper weft and the upper weft, with the result that both the warp and the weft offsets are in one plane lie. The use of binding pairs now lacks this support at all intersections and all the threads absorb the major forces along their respective longitudinal axis, which points into the tissue interior at the intersections. This disadvantage of the lack of support arises in particular when the upper weft and binding pair are used in an alternating sequence, that is to say, for example, a complete upper weft follows a binding pair and then again an upper weft. In order then to realize the preferably known plain weave, the next following upper weft must extend over the warp thread, which previously lay above the crossing point, and is thereby additionally pulled into the fabric interior. As a result, either every other upper warp thread lies deeper in the fabric or none of the warp threads can be at the level of the weft threads. This results in uneven webbing on the paper side, which can lead to unwanted marks in the paper.
Durch die
Ausgehend von diesem Stand der Technik, liegt der Erfindung die Aufgabe zugrunde die beschriebenen Nachteile im Stand der Technik vermeiden zu helfen, insbesondere ein Papiermaschinensieb zu schaffen, das sich durch hohe Festigkeitswerte auszeichnet, insbesondere ein hohes Maß an Querstabilität hat und dabei vergleichbare Entwässerungsleistungen bietet, wie die bekannten Lösungen sowie die Bildung von Markierungen im Papier vermeiden hilft. Eine derartige Aufgabe löst ein Papiermaschinensieb mit den Merkmalen des Patentanspruches 1 in seiner Gesamtheit.Based on this prior art, the invention has the object to avoid the disadvantages described in the prior art help, in particular to create a paper machine screen, which is characterized by high strength values, in particular has a high degree of transverse stability and offers comparable drainage performance, as the known solutions and the formation of markings in the paper helps avoid. Such a problem solves a papermaking machine with the features of
Dadurch, dass gemäß dem kennzeichnenden Teil des Patentanspruches 1 der Übergriff des jeweiligen Bindefadens im Obergewebe bezogen auf einen Schußfaden von drei dazwischenliegenden Kettfäden getrennt ist und dass an der Stelle des mittleren Kettfaden dieser Dreiergruppe der Bindeschußfaden einen darunterliegenden Kettfaden des Untergewebes untergreift, ist zwar wiederum, wie im Stand der Technik aufgezeigt (
Mit der erfindungsgemäßen Lösung ist erreicht, dass die Kettfäden an den Stellen, wo sie durch den Bindefaden ins Gewebeinnere gezogen werden, von unten durch den zugeordneten Schußfaden des Einzelgewebes der Papierseite unterstützt sind. Durch die funktionale Trennung von Ober- und Bindeschuß ist darüber hinaus ermöglicht, für den Oberschuß (Papierseite) ein Material einzusetzen, das die Querstabilität des Gewebes unterstützt, also beispielsweise ein Polyestermaterial, wohingegen bei den eingangs erwähnten bekannten Lösungen bei Verwendung eines Bindeschußpaares beide Materialien gleich geartet und hinsichtlich der Lagenverbindung zu optimieren sind, wobei üblicherweise Polyamide Verwendung finden. Obwohl bei der erfindungsgemäßen Lösung nur ein Bindefaden in einer vorgebbaren Betrachtungsebene verwendet wird, verringert sich die Anzahl der Bindestellen, also der Kontakt zwischen Bindeschuß und Ober- bzw. Unterkette von Papierseite und Laufseite gegenüber den bekannten Lösungen nicht.With the solution according to the invention it is achieved that the warp threads are supported from below by the associated weft thread of the single fabric of the paper side at the points where they are pulled through the binding thread into the fabric interior. Due to the functional separation of upper and binding shot, it is also possible to use a material for the upper part (paper side) which supports the transverse stability of the fabric. Thus, for example, a polyester material, whereas in the above-mentioned known solutions when using a pair of binding shot, both materials are the same type and with respect to the layer connection to optimize, usually find use polyamides. Although in the solution according to the invention only one binding thread is used in a predefinable viewing plane, the number of binding sites, ie the contact between the binding weft and upper or lower chain of the paper side and running side, does not decrease compared to the known solutions.
Bei einer besonders bevorzugten Ausführungsform des erfindungsgemäßen Papiermaschinensiebes ist vorgesehen, dass der Durchmesser des Bindefadens dem des Oberschusses entspricht, was zu einer hohen Festigkeit der Verbindung zwischen den Gewebelagen führt.In a particularly preferred embodiment of the paper machine screen according to the invention, it is provided that the diameter of the binding thread corresponds to that of the upper weft, which leads to a high strength of the connection between the fabric layers.
Weitere vorteilhafte Ausführungsformen des erfindungsgemäßen Papiermaschinensiebes sind Gegenstand der sonstigen Unteransprüche. Im folgenden wird das erfindungsgemäße Papiermaschinensieb anhand dreier verschiedener Ausführungsbeispiele nach der Zeichnung näher erläutert. Dabei zeigen in prinzipieller und nicht maßstäblicher Darstellung die
- Fig. 1 und 2
- in der Art von Schnittbildern zwei bekannte Verbindungslösungen nach dem Stand der Technik,
- Fig. 3
- eine Draufsicht auf einen Ausschnitt der Ober- oder Papierseite des erfindungsgemäßen Papiermaschinensiebes,
- Fig. 4 und 5
- Schnitte längs der Linien A-A bzw. B-B in
,Figur 3 - Fig. 6
- eine Draufsicht auf die Ober- oder Papierseite einer zweiten Ausführungsform des erfindungsgemäßen Papiermaschinensiebes,
- Fig. 7 und 8
- Schnitte längs der Linien C-C und D-D in
,Figur 6 - Fig. 9
- eine Draufsicht auf die Ober- oder Papierseite eines dritten, der ersten Ausführungsform entsprechenden Ausführungsbeispieles jedoch in Realisierung mit wechselnder Schußfolge des Ober- und Bindeschusses.
- Fig. 1 and 2
- in the manner of sectional images, two known connection solutions according to the prior art,
- Fig. 3
- a plan view of a section of the top or paper side of the papermaker's fabric according to the invention,
- 4 and 5
- Cuts along the lines AA and BB in
FIG. 3 . - Fig. 6
- a top view of the top or paper side of a second embodiment of the paper machine wire according to the invention,
- FIGS. 7 and 8
- Cuts along the lines CC and DD in
FIG. 6 . - Fig. 9
- a plan view of the top or paper side of a third embodiment corresponding to the first embodiment, however, in realization with changing firing order of the top and binding shot.
Des weiteren ist in allen verwendeten Abbildungen die folgende Nummernzuordnung realisiert:
- 1 Oberkette
- 2 Oberschuß (mit Bindeschuß)
- 3'3 Bindeschuß
- 4 Oberschuß
- 5 Unterkette
- 6 Unterschuß
- 7 Übergriff
- 8 Untergriff
- 9
Übergriff durch Unterschuß 6
- 1 upper chain
- 2 Oberschuß (with binding shot)
- 3'3 tie shot
- 4 Oberschuß
- 5 subchain
- 6 deficit
- 7 attack
- 8 undergrip
- 9 Attack by
deficit 6
Bei der bekannten im Stand der Technik nachweisbaren Lösung nach der
Bei der weiteren bekannten Lösung nach der
Im folgenden wird nunmehr die erfindungsgemäße Papiermaschinensieb-Lösung beschrieben, wobei der Einfachheit halber und des besseren Verständnisses wegen für die nachfolgenden aufgezeigten Lösungen die selben Bezugszeichen entsprechend verwendet werden, wie bei den bereits vorgestellten bekannten Lösungen.In the following, the paper machine wire solution according to the invention will now be described, wherein for the sake of simplicity and better understanding, the same reference numerals will be used accordingly for the solutions shown below, as in the known solutions already presented.
Das erste Ausführungsbeispiel eines Papiermaschinensiebes nach den
Insbesondere die
Wie sich des weiteren aus der
Die bezogen auf einen Rapport als Fünfschaftbindung ausgebildete erfinderische Bindungslösung sieht vor, dass von den Schußfäden 6 des Untergewebes vier Kettfäden 5 untergriffen und ein Kettfaden 5 in Folge übergriffen ist, wobei der jeweilige Bindeschußfaden 3 an der Stelle dieses Übergriffes 9 schräg ansteigend vom Untergewebe ins Obergewebe wechselt. Der jeweilige Bindeschußfaden 3 hat im wesentlichen den gleichen Durchmesser wie der jeweilige Schußfaden 2 des Einzelgewebes auf der Papierseite. Des weiteren sind die Kettfäden 5 sowie die Schußfäden 6 des Untergewebes, also auf der Laufseite, im Durchmesser jeweils stärker dimensioniert als die zuordenbaren Fadensysteme auf der Ober- oder Papierseite des Papiermaschinensiebes. Bezogen auf die Ober- oder Papierseite des Siebes ist in Folge der jeweilige Übergriff 7 des jeweiligen Bindefadens 3 bezogen auf einen Schußfaden 2 von drei dazwischen liegenden Kettfäden 1 getrennt, wobei an der Stelle des mittleren Kettfadens 1 dieser Dreiergruppe der Bindeschußfaden 3 einen darunterliegenden Kettfaden 5 kurz vor dem Übergriff 9 durch den Unterschuß 6 untergreift. Durch die funktionale Trennung von Oberschußfäden 2 des Obergewebes und Bindeschußfäden 3 können diese aus unterschiedlichen Materialien bestehen, vorzugsweise bestehen zur Erhöhung der Querstabilität des Siebes die Oberschußfäden 2 aus einem Polyesterwerkstoff und die Bindeschußfäden 3 aus einem Polyamidwerkstoff.The inventively designed binding solution based on a repeat as a five-shaft binding provides that four
Der Oberschußfaden 4 nach der
Bei der geänderten Ausführungsform nach den
Bei der Ausführungsform nach der
Claims (7)
- A papermaking screen comprising at least one individual fabric for the paper side and at least one individual fabric for the machine side which respectively comprise a set of weft yarns (4, 6) and warp yarns (1, 5), at least one part of the superimposed individual fabrics being interconnected via binder yarns (3), on the paper side at those points the respective binder yarn (3) engaging from above with warp yarns (1) of the individual fabric (7) which on their opposite side are engaged with from below by at least one adjacent weft yarn (2) of this individual fabric (8), and in order to form the screen two individual fabrics, one in the manner of an upper fabric for the paper side, one in the manner of a lower fabric for the machine side, being used, characterised in that the engagement from above (7) of the respective binder yarn (3) in the upper fabric in relation to a weft yarn (2) is separated by three warp yarns (1) lying between the latter, and that at the point of the central warp yarn (1) of this group of three the binder weft yarn (3) engages from below with a warp yarn (5) of the lower fabric lying beneath.
- The papermaking screen according to Claim 1, characterised in that as binder yarns (3) only a respective first type of binder weft yarn undertakes the joining of the individual fabrics.
- The papermaking screen according to Claim 1 or 2, characterised in that the upper fabric is formed in the manner of a plain weave and that the respective binder weft yarn (3) limits at the point of engagement from above (7) of the assignable warp yarn (1) with the latter an angular dimension which is equal to the correspondingly formed angular dimension of the weft yarn (2) engaging from beneath.
- The papermaking screen according to any of Claims 1 to 3, characterised in that the lower fabric is a multi-shaft binding, in particular a four or five shaft binding such that three or four warp yarns (5) are engaged from below by the weft yarns (6) of the lower fabric and respectively one warp yarn (5) is engaged from above, and that the respective binder weft yarn (3) changes from the lower fabric into the upper fabric outside of and at the point of this engagement from above (9).
- The papermaking screen according to any of Claims 1 to 4, characterised in that the respective binder weft yarn (3) has substantially the same diameter as the respective weft yarn (2) of the individual fabric on the paper side.
- The papermaking screen according to any of Claims 1 to 5, characterised in that the engagement from above (7) of the respective binder yarn (3) is supported on the upper side by a warp yarn (1) which extends between the assignable weft yarn (2) of the upper fabric and that of the lower fabric.
- The papermaking screen according to-any of Claims 1 to 6, characterised in that by the functional separation of the upper weft yarns (2) of the upper fabric and the binder weft yarns (3), the latter are made of different materials, preferably comprising a polyester material and the binder weft yarns (3) a polyamide material in order to increase the lateral stability of the screen.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10253491A DE10253491B3 (en) | 2002-11-16 | 2002-11-16 | Paper machine sieve, consists of at least one single fabric for the single paper side, binding fibres and a single fabric for the running side |
DE10253491 | 2002-11-16 | ||
PCT/EP2003/011776 WO2004046458A1 (en) | 2002-11-16 | 2003-10-24 | Papermaking screen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1565613A1 EP1565613A1 (en) | 2005-08-24 |
EP1565613B1 true EP1565613B1 (en) | 2009-09-30 |
EP1565613B2 EP1565613B2 (en) | 2016-06-15 |
Family
ID=32103452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03811353.6A Expired - Lifetime EP1565613B2 (en) | 2002-11-16 | 2003-10-24 | Papermaking screen |
Country Status (9)
Country | Link |
---|---|
US (1) | US7373957B2 (en) |
EP (1) | EP1565613B2 (en) |
JP (1) | JP4464278B2 (en) |
CN (1) | CN1705790A (en) |
AT (1) | ATE444393T1 (en) |
AU (1) | AU2003276162A1 (en) |
DE (2) | DE10253491B3 (en) |
ES (1) | ES2333009T5 (en) |
WO (1) | WO2004046458A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006034576A1 (en) * | 2004-09-30 | 2006-04-06 | Roger Danby | Double layer forming fabric with high centre plane resistance |
JP4762529B2 (en) * | 2004-11-17 | 2011-08-31 | 日本フイルコン株式会社 | Industrial two-layer fabric |
EP1877609A4 (en) * | 2005-05-05 | 2014-09-10 | Astenjohnson Inc | Bulk enhancing forming fabrics |
JP4739903B2 (en) * | 2005-10-17 | 2011-08-03 | 日本フイルコン株式会社 | Industrial two-layer fabric |
JP4383433B2 (en) * | 2006-07-21 | 2009-12-16 | 日本フエルト株式会社 | Paper fabric |
WO2009018274A1 (en) * | 2007-07-30 | 2009-02-05 | Astenjohnson, Inc. | Warp-tied forming fabric with selective warp pair ordering |
IT1391327B1 (en) * | 2008-08-08 | 2011-12-05 | Feltri Marone S P A | CARD MANUFACTURING FABRIC, IN PARTICULAR TO BE USED IN THE FORMATION SECTION OF A PAPER MANUFACTURING MACHINE |
ES2391923T3 (en) * | 2009-03-20 | 2012-12-03 | Heimbach Gmbh & Co. Kg | Woven fabric band to circulate through a machine |
DE102010017055A1 (en) * | 2010-05-21 | 2011-11-24 | Andritz Technology And Asset Management Gmbh | forming wire |
FI20155918A (en) * | 2015-12-04 | 2017-06-05 | Valmet Technologies Oy | paper machine |
CN105714450B (en) * | 2016-04-14 | 2018-05-29 | 苏州市欣楠纺织科技有限公司 | A kind of anti-slippage sportswear lining of weaving polyester and its method for weaving |
FI20206371A1 (en) * | 2020-12-23 | 2022-06-24 | Valmet Technologies Inc | Industrial textile |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE435739B (en) † | 1983-02-23 | 1984-10-15 | Nordiskafilt Ab | DOUBLE TEXTILE TYPE FORMATION WIRES |
US4705601A (en) * | 1987-02-05 | 1987-11-10 | B.I. Industries, Inc. | Multi-ply paper forming fabric with ovate warp yarns in lowermost ply |
US5238536A (en) * | 1991-06-26 | 1993-08-24 | Huyck Licensco, Inc. | Multilayer forming fabric |
DE4229828C2 (en) | 1992-09-07 | 1996-07-04 | Kufferath Andreas Gmbh | Paper machine screen in the form of a composite fabric |
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 |
US5482567A (en) † | 1994-12-06 | 1996-01-09 | Huyck Licensco, Inc. | Multilayer forming fabric |
GB9604602D0 (en) * | 1996-03-04 | 1996-05-01 | Jwi Ltd | Composite papermaking fabric with paired weft binder yarns |
US5967195A (en) * | 1997-08-01 | 1999-10-19 | Weavexx Corporation | Multi-layer forming fabric with stitching yarn pairs integrated into papermaking surface |
US5881764A (en) * | 1997-08-01 | 1999-03-16 | Weavexx Corporation | Multi-layer forming fabric with stitching yarn pairs integrated into papermaking surface |
GB2351505A (en) * | 1999-06-29 | 2001-01-03 | Jwi Ltd | Two-layer woven fabric for papermaking machines |
GB0005344D0 (en) * | 2000-03-06 | 2000-04-26 | Stone Richard | Forming fabric with machine side layer weft binder yarns |
FI108551B (en) * | 2000-06-26 | 2002-02-15 | Tamfelt Oyj Abp | A paper machine fabric |
DE10030650C1 (en) * | 2000-06-29 | 2002-05-29 | Kufferath Andreas Gmbh | papermaker |
DE10123204C2 (en) * | 2001-05-12 | 2003-03-27 | Kufferath Andreas Gmbh | papermaker |
US6883556B2 (en) * | 2002-12-30 | 2005-04-26 | Albany International Corp. | Double cross parallel binder fabric |
US6905574B2 (en) * | 2003-04-18 | 2005-06-14 | Albany International Corp. | Multi-layer forming fabric with two warp systems bound together with a triplet of binder yarns |
US6926043B2 (en) * | 2003-05-30 | 2005-08-09 | Voith Fabrics Gmbh & Co. Kg | Forming fabrics |
US6978809B2 (en) * | 2003-09-29 | 2005-12-27 | Voith Fabrics | Composite papermaking fabric |
US7007722B2 (en) * | 2003-11-17 | 2006-03-07 | Voith Paper Patent Gmbh | Forming fabric |
-
2002
- 2002-11-16 DE DE10253491A patent/DE10253491B3/en not_active Expired - Lifetime
-
2003
- 2003-10-24 CN CNA2003801016789A patent/CN1705790A/en active Pending
- 2003-10-24 DE DE50311978T patent/DE50311978D1/en not_active Expired - Lifetime
- 2003-10-24 JP JP2004552491A patent/JP4464278B2/en not_active Expired - Lifetime
- 2003-10-24 AT AT03811353T patent/ATE444393T1/en active
- 2003-10-24 US US10/530,724 patent/US7373957B2/en not_active Expired - Lifetime
- 2003-10-24 ES ES03811353.6T patent/ES2333009T5/en not_active Expired - Lifetime
- 2003-10-24 AU AU2003276162A patent/AU2003276162A1/en not_active Abandoned
- 2003-10-24 EP EP03811353.6A patent/EP1565613B2/en not_active Expired - Lifetime
- 2003-10-24 WO PCT/EP2003/011776 patent/WO2004046458A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN1705790A (en) | 2005-12-07 |
EP1565613B2 (en) | 2016-06-15 |
DE50311978D1 (en) | 2009-11-12 |
US7373957B2 (en) | 2008-05-20 |
ATE444393T1 (en) | 2009-10-15 |
AU2003276162A1 (en) | 2004-06-15 |
JP2006506546A (en) | 2006-02-23 |
ES2333009T3 (en) | 2010-02-16 |
JP4464278B2 (en) | 2010-05-19 |
US20060162804A1 (en) | 2006-07-27 |
EP1565613A1 (en) | 2005-08-24 |
DE10253491B3 (en) | 2004-05-13 |
WO2004046458A1 (en) | 2004-06-03 |
ES2333009T5 (en) | 2016-09-26 |
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