EP0726355B1 - Method to transfer a paper web from a first to a second work station of a paper machine - Google Patents

Method to transfer a paper web from a first to a second work station of a paper machine Download PDF

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Publication number
EP0726355B1
EP0726355B1 EP96101393A EP96101393A EP0726355B1 EP 0726355 B1 EP0726355 B1 EP 0726355B1 EP 96101393 A EP96101393 A EP 96101393A EP 96101393 A EP96101393 A EP 96101393A EP 0726355 B1 EP0726355 B1 EP 0726355B1
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EP
European Patent Office
Prior art keywords
paper web
transfer
drying
air
air jets
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
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EP96101393A
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German (de)
French (fr)
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EP0726355A2 (en
EP0726355A3 (en
Inventor
Erlfried Atzinger
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Voith Patent GmbH
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Voith Paper Patent GmbH
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Publication of EP0726355A2 publication Critical patent/EP0726355A2/en
Publication of EP0726355A3 publication Critical patent/EP0726355A3/xx
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Publication of EP0726355B1 publication Critical patent/EP0726355B1/en
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/04—Drying on cylinders on two or more drying cylinders
    • D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0063—Devices for threading a web tail through a paper-making machine

Definitions

  • Reference (1) shows and describes a dryer section a paper machine.
  • This dryer section shows in a first part a single-row cylinder group with a single felt.
  • the felt with the one on it resting web runs alternately over drying cylinders and deflection suction rolls.
  • the dryer section has two rows of drying cylinders with two felts.
  • the train runs alternately across the lower and upper cylinders.
  • Threading strips a narrow margin (the so-called Threading strips) through the entire dryer section guided.
  • Blower nozzles are used in this context to transfer the web from a drying cylinder to the others.
  • the fan nozzles generate air jets that are essentially in the transfer direction of the edge strip run.
  • the air jets drive the edge strip in the desired direction, namely from a first (upstream) drying cylinder to a second (downstream) Drying cylinder to the edge strip from the first Drying cylinder towards the second drying cylinder convict.
  • This transfer has always stopped Problem.
  • the direct transfer of the verge in certain places it was often not possible. occasionally the edge strip flutters, so that the whole Process of guiding the edge strip is time consuming is. However, this means a relatively long time Downtime of the paper machine and therefore one reduced production.
  • Reference (2) also shows and describes the Transfer of a narrow edge strip in the dryer section a paper machine.
  • a Air jet generated that the direction of the paper web is opposite, but describes not a free, i.e. open-chain transfer the paper strip, but the paper strip adheres to the outer surface of a cylinder and becomes scraped off by a scraper, taking the fan air the detachment supports.
  • the object of the present invention is to provide a method of transferring a Paper web in a drying section of a paper making machine, where a fast and stable Guidance of the paper web can be guaranteed can, so that the transfer with higher reliability and higher speed is feasible.
  • each of these one-felt cylinder groups 11 to 16 a single endless Felt on.
  • Runs in the first cylinder group 11 the felt, for example, alternating with the web 9 via drying cylinder 51 and deflection rollers 51 ', preferably as Suction rolls are formed.
  • 16 comes with the underside of the web Cylinders in contact. Accordingly, here are the Drying cylinders 51, 52, 54, 56 above the associated ones Deflection suction rollers 51 ', 52', 54 'and 56'; the cylinders are felted here.
  • the deflection suction rollers 51 ' up to 56 ' are free of internal stationary installations and direct suction connections. Instead it is on each of these deflection suction rolls has an external suction box 59 intended. This lies in between two neighboring ones So-called pocket drying cylinders and at the point where felt F and web 9 together have the leave the first of these two cylinders, a ledge, which brought the felt up Air boundary layer strips and redirects.
  • the last single felt cylinder group 16 follows a two-felt cylinder group 17 with several lower ones Cylinders 57 and several upper cylinders 57 'and with a bottom felt UF and a top felt OF. Here it runs Lane 9 meandering alternately over the lower and upper cylinder.
  • Figure 2 shows another dryer section the transfer area between the last single felt cylinder group and the first two-felt cylinder group shown.
  • the last two drying cylinders 73 the last one-felt cylinder group 23 and the first three cylinders 74, 74 'of the two-felt cylinder group 24 see.
  • a deflection suction roll 73 ' is also included an internal suction box and before the first lower one Drying cylinder 74 a transverse deflection roller 58, which also has a stationary internal suction box.
  • An automatic, rope-free deflection device for one Edge strip is in the one-felt cylinder group 23 trained, for example such that each Deflection suction roll 73 at one of its two ends known edge suction area.
  • blower air devices that are symbolically indicated by arrows, as well as a Fan air nozzle 79 is provided.
  • an edge suction box R (which is only in the Area of the edge strip is active), a web stabilizing device or the like may be arranged.
  • a short "edge deflection scraper" 88 that only the Area of the edge strip and also covers one Fan air nozzle may be on the last one Cylinder 73 arranged.
  • blower nozzles 101, 102 shown in FIG. 103, 104 are absolutely crucial. They serve for Transfer of an edge strip from the first lower one Drying cylinder 74 of the two-felt cylinder group 24 - to that first upper drying cylinder 74 'thereof.
  • blower nozzles 102, 104 their air jets down and thus in the transfer direction are oriented in the opposite direction, available. It has been found that a extremely stable guidance of the edge strip is possible.
  • the air jets of the nozzles 101, 103 produce a conveying effect, by quickly moving the edge strip upwards take it to the drying cylinder 74 '.
  • the air jets of the two fan nozzles 102, 104 on the other hand making sure that the edge strip is in a stable position takes and immediately after leaving the first lower Drying cylinder 74 of the cylinder group 24 the right one Direction to the first upper drying cylinder 74 '.
  • the two fan nozzles 101, 102 and the two Blower nozzles 103, 104 can be combined in terms of construction be and therefore carried by a single holder become.
  • FIG. 3 is again on a larger scale Transfer area shown. It's the blower nozzles again 102, 104 can be seen.
  • the blower nozzles 101, 103 were the Overview omitted for the sake of the drawing. How to see has the air jet 102.1 from the blower nozzle 102 Component 102.2, which is perpendicular to the direction of the verge 9, and a component 102.3 which the direction of the edge strip 9 exactly opposite is. Exactly the same applies to the air jets 104.1 from the blower nozzle 104 with the components 104.2 and 104.3.

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  • Paper (AREA)
  • Drying Of Solid Materials (AREA)

Description

ALLGEMEINER STAND DER TECHNIKGENERAL PRIOR ART

Die vorliegende Erfindung betrifft ein Verfahren zum Transfer einer Papierbahn in einem Trocknungsteil einer Papierherstellungsmaschine, gemäß Oberbegriff des Anspruchs 1. Der folgende Stand der Technik ist bekannt:

  • (1) DE 43 28 554 A1
  • (2) DE 39 41 242 A1
    • The present invention relates to a method for transferring a paper web in a drying section of a paper making machine, according to the preamble of claim 1. The following prior art is known:
  • (1) DE 43 28 554 A1
  • (2) DE 39 41 242 A1

    • Referenz (1) zeigt und beschreibt eine Trockenpartie einer Papiermaschine. Diese Trockenpartie weist in einem ersten Teil eine einreihige Zylindergruppe mit einem einzigen Filz auf. Der Filz mit der darauf ruhenden Bahn läuft abwechselnd über Trockenzylinder und Umlenksaugwalzen. In einem zweiten Teil weist die Trockenpartie zwei Reihen Trockenzylinder mit zwei Filzen auf. Hier läuft die Bahn abwechselnd über die unteren und oberen Zylinder. Beim Anfahren der Papiermaschine, d.h. Einfädeln, wird zunächst ein schmaler Randstreifen (der sogenannte Einfädelstreifen) durch die gesamte Trockenpartie geführt. In diesem Zusammenhang dienen Gebläsedüsen zum Transfer der Bahn von einem Trockenzylinder zum anderen.Reference (1) shows and describes a dryer section a paper machine. This dryer section shows in a first part a single-row cylinder group with a single felt. The felt with the one on it resting web runs alternately over drying cylinders and deflection suction rolls. In a second part the dryer section has two rows of drying cylinders with two felts. Here the train runs alternately across the lower and upper cylinders. At the Starting the paper machine, i.e. Threading will first a narrow margin (the so-called Threading strips) through the entire dryer section guided. Blower nozzles are used in this context to transfer the web from a drying cylinder to the others.

    Die Gebläsedüsen erzeugen Luftstrahlen, die im wesentlichen in Transferrichtung des Randstreifens verlaufen. Somit treiben die Luftstrahlen den Randstreifen in die gewünschte Richtung, nämlich von einem ersten (stromaufwärts gelegenen) Trockenzylinder zu einem zweiten (stromabwärts gelegenen) Trockenzylinder, um den Randstreifen von dem ersten Trockenzylinder auf den zweiten Trockenzylinder zu überführen. Dieser Transfer stellte schon immer ein Problem dar. Der direkte Transfer des Randstreifens an gegebenen Stellen war oftmals nicht möglich. Zuweilen flattert der Randstreifen, so daß der gesamte Prozeß des Führens des Randstreifens zeitaufwendig ist. Dies bedeutet jedoch eine relativ lange Stillstandzeit der Papiermaschine und somit eine verminderte Produktion.The fan nozzles generate air jets that are essentially in the transfer direction of the edge strip run. The air jets drive the edge strip in the desired direction, namely from a first (upstream) drying cylinder to a second (downstream) Drying cylinder to the edge strip from the first Drying cylinder towards the second drying cylinder convict. This transfer has always stopped Problem. The direct transfer of the verge in certain places it was often not possible. occasionally the edge strip flutters, so that the whole Process of guiding the edge strip is time consuming is. However, this means a relatively long time Downtime of the paper machine and therefore one reduced production.

    Referenz (2) zeigt und beschreibt des weiteren den Transfer eines schmalen Randstreifens in der Trockenpartie einer Papiermaschine. Hier wird ein Luftstrahl erzeugt, der der Laufrichtung der Papierbahn entgegengerichtet ist, beschreibt jedoch nicht einen freien, das heißt offenkettigen Transfer den Papierstreifens, sondern der Papierstreifen haftet an der Außenfläche eines Zylinders und wird von einem Schaber davon abgeschabt, wobei die Gebläseluft das Ablösen unterstützt. Reference (2) also shows and describes the Transfer of a narrow edge strip in the dryer section a paper machine. Here is a Air jet generated that the direction of the paper web is opposite, but describes not a free, i.e. open-chain transfer the paper strip, but the paper strip adheres to the outer surface of a cylinder and becomes scraped off by a scraper, taking the fan air the detachment supports.

    KURZE DARSTELLUNG DER ERFINDUNGSUMMARY OF THE INVENTION

    Die Aufgabe der vorliegenden Erfindung ist die Bereitstellung eines Verfahrens zum Transfer einer Papierbahn in einem Trocknungsteil einer Papierherstellungsmaschine, bei der eine schnelle und stabile Führung der Papierbahn gewährleistet werden kann, so daß der Transfer mit höherer Zuverlässigkeit und höherer Geschwindigkeit durchführbar ist.The object of the present invention is to provide a method of transferring a Paper web in a drying section of a paper making machine, where a fast and stable Guidance of the paper web can be guaranteed can, so that the transfer with higher reliability and higher speed is feasible.

    Zur Lösung der Aufgabe wird ein Verfahren mit den Merkmalen des Anspruchs 1 vorgeschlagen.To solve the problem, a method with the Features of claim 1 proposed.

    KURZE BESCHREIBUNG DER ZEICHNUNGENBRIEF DESCRIPTION OF THE DRAWINGS

    Die Erfindung wird anhand der Zeichnung ausführlicher erklärt.

    Figur 1
    zeigt eine Trockenpartie mit Ein-Filz-Zylindergruppen 11 bis 16 und einer Zwei-Filz-Zylindergruppe 17.
    Figur 2
    ist eine Vergrößerung des Bahntransferbereichs zwischen Zylindergruppen.
    Figur 3
    stellt graphisch die Transferluftstrahlrichtungen in den Bahntransferbereichen dar.
    The invention is explained in more detail with reference to the drawing.
    Figure 1
    shows a dryer section with one-felt cylinder groups 11 to 16 and a two-felt cylinder group 17.
    Figure 2
    is an enlargement of the web transfer area between cylinder groups.
    Figure 3
    graphically shows the transfer air jet directions in the web transfer areas.

    AUSFÜHRLICHE BESCHREIBUNG DER ERFINDUNGDETAILED DESCRIPTION OF THE INVENTION

    In Figur 1 weist jede dieser Ein-Filz-Zylindergruppen 11 bis 16 einen einzigen endlosen Filz F auf. In der ersten Zylindergruppe 11 läuft der Filz beispielsweise zusammen mit der Bahn 9 abwechselnd über Trockenzylinder 51 und Umlenkwalzen 51', die vorzugsweise als Saugwalzen ausgebildet sind. In den ersten beiden Zylindergruppen 11 und 12 sowie in der vierten und sechsten Zylindergruppe 14, 16 kommt die Bahnunterseite mit den Zylindern in Kontakt. Dementsprechend liegen hier die Trockenzylinder 51, 52, 54, 56 oberhalb der dazugehörigen Umlenksaugwalzen 51', 52', 54' bzw. 56'; die Zylinder sind hier "oben befilzt". Anders dagegen in der dritten Zylindergruppe 13 und in der fünften Zylindergruppe 15. Hier kommen die Zylinder 53, 55 mit der Bahnoberseite in Kontakt; sie sind deshalb "unten befilzt" und liegen unterhalb der dazugehörigen Umlenksaugwalzen 53', 55'. Folglich sind die zwischen den Zylindergruppen 12 bis 16 vorhandenen Trennstellen als sogenannte Wendetrennstellen ausgebildet. Einzelheiten dieser Wendetrennstellen werden in der europäischen Patentanmeldung P 43 11 351 beschrieben. Aus Figur 1 ist ersichtlich, daß an jeder dieser Wendetrennstellen die Papierbahn eine kurze offene Strecke, also einen offenen Zug bildet; d.h. sie ist vorübergehend nicht durch einen Filz gestützt. Sie läuft im Bereich einer kleinen Saugzone einer Transferwalze 58 auf den jeweils nächsten Filz auf. In Fig. 1 sind diese Transferwalzen 58 die einzigen Saugwalzen mit innenliegendem stationären Saugkasten. Die Umlenksaugwalzen 51' bis 56' sind dagegen frei von inneren stationären Einbauten und von direkten Sauganschlüssen. Stattdessen ist an jeder dieser Umlenksaugwalzen ein externer Saugkasten 59 vorgesehen. Dieser liegt in der zwischen zwei benachbarten Trockenzylindern befindlichen sogenannten Tasche und hat an der Stelle, wo Filz F und Bahn 9 gemeinsam den ersten dieser zwei Zylinder verlassen, eine Leiste, welche die vom Filz herantransportierte Luftgrenzschicht abstreift und umlenkt.In Figure 1, each of these one-felt cylinder groups 11 to 16 a single endless Felt on. Runs in the first cylinder group 11 the felt, for example, alternating with the web 9 via drying cylinder 51 and deflection rollers 51 ', preferably as Suction rolls are formed. In the first two groups of cylinders 11 and 12 as well as in the fourth and sixth Cylinder group 14, 16 comes with the underside of the web Cylinders in contact. Accordingly, here are the Drying cylinders 51, 52, 54, 56 above the associated ones Deflection suction rollers 51 ', 52', 54 'and 56'; the cylinders are felted here. In contrast, in the third Cylinder group 13 and in the fifth cylinder group 15. Here the cylinders 53, 55 come in with the top of the web Contact; they are therefore "felted below" and lie below the associated deflection suction rolls 53 ', 55'. As a result, those between the cylinder groups are 12 to 16 existing separation points as so-called turning separation points educated. Details of these reversing separation points will be given described in European patent application P 43 11 351. From Figure 1 it can be seen that at each of these turning points the paper web a short open Route, ie forms an open train; i.e. she is temporarily not supported by a felt. she runs in the area of a small suction zone of a transfer roller 58 on the next felt. In Fig. 1 these are Transfer rollers 58 are the only suction rollers with an internal one stationary suction box. The deflection suction rollers 51 ' up to 56 ', however, are free of internal stationary installations and direct suction connections. Instead it is on each of these deflection suction rolls has an external suction box 59 intended. This lies in between two neighboring ones So-called pocket drying cylinders and at the point where felt F and web 9 together have the leave the first of these two cylinders, a ledge, which brought the felt up Air boundary layer strips and redirects.

    Auf die letzte Ein-Filz-Zylindergruppe 16 folgt eine Zwei-Filz-Zylindergruppe 17 mit mehreren unteren Zylindern 57 und mehreren oberen Zylindern 57' sowie mit einem Unterfilz UF und einem Oberfilz OF. Hier läuft die Bahn 9 mäanderförmig abwechselnd über die unteren und oberen Zylinder. The last single felt cylinder group 16 follows a two-felt cylinder group 17 with several lower ones Cylinders 57 and several upper cylinders 57 'and with a bottom felt UF and a top felt OF. Here it runs Lane 9 meandering alternately over the lower and upper cylinder.

    In Figur 2 wird bei einer anderen Trockenpartie der Transferbereich zwischen der letzten Ein-Filz-Zylindergruppe und der ersten Zwei-Filz-Zylindergruppe gezeigt. Hier sind die letzten beiden Trockenzylinder 73 der letzten Ein-Filz-Zylindergruppe 23 und die ersten drei Zylinder 74, 74' der Zwei-Filz-Zylindergruppe 24 zu sehen. Des weiteren sind eine Umlenksaugwalze 73' mit einem internen Saugkasten und vor dem ersten unteren Trockenzylinder 74 eine Querumlenksaugwalze 58, die auch einen stationären internen Saugkasten aufweist, zu sehen. Eine automatische, seillose Umlenkeinrichtung für einen Randstreifen ist in der Ein-Filz-Zylindergruppe 23 ausgebildet, und zwar beispielsweise derart, daß jede Umlenksaugwalze 73 an einem ihrer beiden Enden einen bekannten Randsaugbereich aufweist. Des weiteren sind an einem Schaberstützkörper 76 Gebläselufteinrichtungen, die symbolisch durch Pfeile angedeutet werden, sowie eine Gebläseluftdüse 79 vorgesehen. An der Stelle, wo die Bahn 9 und der Filz F gemeinsam den letzten Zylinder 73 verlassen, können ein Randsaugkasten R (der nur im Bereich des Randstreifens aktiv ist), eine Bahnstabilisiereinrichtung oder dergleichen angeordnet sein. Oder ein kurzer "Randstreifenumlenkschaber" 88, der nur den Bereich des Randstreifens abdeckt und der auch eine Gebläseluftdüse aufweisen kann, ist an dem letzten Zylinder 73 angeordnet.Figure 2 shows another dryer section the transfer area between the last single felt cylinder group and the first two-felt cylinder group shown. Here are the last two drying cylinders 73 the last one-felt cylinder group 23 and the first three cylinders 74, 74 'of the two-felt cylinder group 24 see. A deflection suction roll 73 'is also included an internal suction box and before the first lower one Drying cylinder 74 a transverse deflection roller 58, which also has a stationary internal suction box. An automatic, rope-free deflection device for one Edge strip is in the one-felt cylinder group 23 trained, for example such that each Deflection suction roll 73 at one of its two ends known edge suction area. Furthermore are on a scraper support body 76 blower air devices that are symbolically indicated by arrows, as well as a Fan air nozzle 79 is provided. At the point where the train 9 and the felt F together the last cylinder 73 leave, an edge suction box R (which is only in the Area of the edge strip is active), a web stabilizing device or the like may be arranged. Or a short "edge deflection scraper" 88 that only the Area of the edge strip and also covers one Fan air nozzle may be on the last one Cylinder 73 arranged.

    Die in Fig. 2 gezeigten Gebläsedüsen 101, 102, 103, 104 sind absolut entscheidend. Sie dienen zum Transfer eines Randstreifens von dem ersten unteren Trockenzylinder 74 der Zwei-Filz-Zylindergruppe 24 -zu dem ersten oberen Trockenzylinder 74' davon. Wie ersichtlich, sind auf beiden Seiten des Randstreifens 9 Gebläsedüsen 101, 103, deren Luftstrahlen nach oben, d.h. in Transferrichtung, ausgerichtet sind, sowie Gebläsedüsen 102, 104, deren Luftstrahlen nach unten und somit in der Transferrichtung entgegengesetzter Richtung ausgerichtet sind, vorhanden. Es wurde gefunden, daß auf diese Weise eine äußerst stabile Führung des Randstreifens möglich ist. Die Luftstrahlen der Düsen 101, 103 erzeugen eine Förderwirkung, indem sie den Randstreifen schnell in Aufwärtsrichtung zum Trockenzylinder 74' mitführen. Die Luftstrahlen der beiden Gebläsedüsen 102, 104 sorgen andererseits dafür, daß der Randstreifen eine stabile Position einnimmt und sofort nach Verlassen des ersten unteren Trockenzylinders 74 der Zylindergruppe 24 die richtige Richtung zum ersten oberen Trockenzylinder 74' einnimmt.The blower nozzles 101, 102 shown in FIG. 103, 104 are absolutely crucial. They serve for Transfer of an edge strip from the first lower one Drying cylinder 74 of the two-felt cylinder group 24 - to that first upper drying cylinder 74 'thereof. As can be seen there are 9 blower nozzles on both sides of the edge strip 101, 103, whose air jets are directed upwards, i.e. in the transfer direction, are aligned, and blower nozzles 102, 104, their air jets down and thus in the transfer direction are oriented in the opposite direction, available. It has been found that a extremely stable guidance of the edge strip is possible. The air jets of the nozzles 101, 103 produce a conveying effect, by quickly moving the edge strip upwards take it to the drying cylinder 74 '. The air jets of the two fan nozzles 102, 104 on the other hand making sure that the edge strip is in a stable position takes and immediately after leaving the first lower Drying cylinder 74 of the cylinder group 24 the right one Direction to the first upper drying cylinder 74 '.

    Die beiden Gebläsedüsen 101, 102 sowie die beiden Gebläsedüsen 103, 104 können konstruktionsmäßig kombiniert sein und somit von einem einzigen Halter getragen werden.The two fan nozzles 101, 102 and the two Blower nozzles 103, 104 can be combined in terms of construction be and therefore carried by a single holder become.

    In Fig. 3 wird nochmals in größerem Maßstab der Transferbereich gezeigt. Es sind wieder die Gebläsedüsen 102, 104 zu sehen. Die Gebläsedüsen 101, 103 wurden der Übersicht der Zeichnung halber weggelassen. Wie zu sehen, weist der Luftstrahl 102.1 aus der Gebläsedüse 102 eine Komponente 102.2, die senkrecht zur Richtung des Randstreifens 9 verläuft, und eine Komponente 102.3 auf, die der Richtung des Randstreifens 9 genau entgegengesetzt ist. Genau das gleiche gilt hinsichtlich der Luftstrahlen 104.1 aus der Gebläsedüse 104 mit den Komponenten 104.2 und 104.3.In Fig. 3 is again on a larger scale Transfer area shown. It's the blower nozzles again 102, 104 can be seen. The blower nozzles 101, 103 were the Overview omitted for the sake of the drawing. How to see has the air jet 102.1 from the blower nozzle 102 Component 102.2, which is perpendicular to the direction of the verge 9, and a component 102.3 which the direction of the edge strip 9 exactly opposite is. Exactly the same applies to the air jets 104.1 from the blower nozzle 104 with the components 104.2 and 104.3.

    Claims (4)

    1. Method of transferring a paper web (9) in a drying part of a paper-making machine, in which the paper web (9) is guided in meandering fashion, first of all through a plurality of single-row drying sections (23) and then through at least one two-row drying section (24), alternately over a drying cylinder of one row and a drying cylinder of the other row, the paper web (9) being guided with open transfer in the transfer region between the first drying cylinder (74) of the two-row drying section (24) and the second drying cylinder (74') thereof, and, for the purpose of transferring the paper web (9) from the first drying cylinder (74) of the two-row drying section (24) to the second drying cylinder (74') thereof, first air jets (102.1, 104.1) being directed onto the paper web (9) in the open-transfer region, said air jets being provided on mutually opposite sides of the paper web (9), with the result that the paper web (9) is exposed to the first air jets (102.1, 104.1) from opposite sides, characterized in that the first air jets (102.1, 104.1) have air-flow components (102.3, 104.3) which flow essentially in a direction counter to the transfer direction of the paper web (9).
    2. Method according to Claim 1, characterized in that the paper web (9) is a lace threaded in through the drying part, and the air jets (102.1, 104.1) are operated at least as the lace is threaded in.
    3. Method according to Claim 1, characterized in that second air jets are directed onto the paper web (9) in the open-transfer region on mutually opposite sides of the paper web (9), the second air jets having air-flow components in the transfer direction of the paper web (9).
    4. Method according to Claim 1, characterized in that the first air jets (102.1, 104.1) have a first air-flow component (102.3, 104.3), which is directed counter to the transfer direction of the paper web (9), and a second air-flow component (102.2, 104.2), which is directed essentially perpendicularly to the transfer direction of the paper web (9).
    EP96101393A 1995-02-09 1996-02-01 Method to transfer a paper web from a first to a second work station of a paper machine Expired - Lifetime EP0726355B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    US38600795A 1995-02-09 1995-02-09
    US386007 1995-02-09

    Publications (3)

    Publication Number Publication Date
    EP0726355A2 EP0726355A2 (en) 1996-08-14
    EP0726355A3 EP0726355A3 (en) 1996-08-21
    EP0726355B1 true EP0726355B1 (en) 2002-06-05

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    Application Number Title Priority Date Filing Date
    EP96101393A Expired - Lifetime EP0726355B1 (en) 1995-02-09 1996-02-01 Method to transfer a paper web from a first to a second work station of a paper machine

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    US (1) US5718058A (en)
    EP (1) EP0726355B1 (en)
    CA (1) CA2169208A1 (en)
    DE (1) DE59609272D1 (en)
    FI (1) FI114491B (en)

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    DE19726895A1 (en) * 1997-06-25 1999-01-07 Voith Sulzer Papiermasch Gmbh Machine for the production of a material web
    FI113883B (en) 1999-08-12 2004-06-30 Runtech Systems Oy Methods and devices for processing a web of material and for controlling the behavior of the web of material
    DE10016492A1 (en) 2000-04-01 2001-10-11 Voith Paper Patent Gmbh Laxative
    US6513263B2 (en) 2000-10-06 2003-02-04 Enerquin Air Inc. Ventilator for offset pocket and method of ventilating the same
    FI20060757L (en) * 2006-08-25 2008-02-26 Runtech Systems Oy Method and device for guiding a paper web or the like
    DE102015001008A1 (en) * 2015-01-28 2016-07-28 Andritz Küsters Gmbh Process and apparatus for the production of wetlaid nonwovens

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    DE59609272D1 (en) 2002-07-11
    CA2169208A1 (en) 1996-08-10
    US5718058A (en) 1998-02-17
    FI114491B (en) 2004-10-29
    EP0726355A2 (en) 1996-08-14
    FI960559A (en) 1996-08-10
    FI960559A0 (en) 1996-02-07
    EP0726355A3 (en) 1996-08-21

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