EP1101864B1 - Process for transfering a fibrous web - Google Patents

Process for transfering a fibrous web Download PDF

Info

Publication number
EP1101864B1
EP1101864B1 EP00121725A EP00121725A EP1101864B1 EP 1101864 B1 EP1101864 B1 EP 1101864B1 EP 00121725 A EP00121725 A EP 00121725A EP 00121725 A EP00121725 A EP 00121725A EP 1101864 B1 EP1101864 B1 EP 1101864B1
Authority
EP
European Patent Office
Prior art keywords
web
transfer
guide roll
clothing
discharges
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
Application number
EP00121725A
Other languages
German (de)
French (fr)
Other versions
EP1101864A3 (en
EP1101864A2 (en
Inventor
Wolfgang Mayer
Ralf Rziha
Roland Mayer
Hans Prinzing
Dirk Thomas
Ingolf Cedra
Thomas Augscheller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE1999155030 external-priority patent/DE19955030A1/en
Priority claimed from DE2000115357 external-priority patent/DE10015357A1/en
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1101864A2 publication Critical patent/EP1101864A2/en
Publication of EP1101864A3 publication Critical patent/EP1101864A3/en
Application granted granted Critical
Publication of EP1101864B1 publication Critical patent/EP1101864B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/04—Arrangements thereof
    • D21F3/045—Arrangements thereof including at least one extended press nip
    • 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

  • the present invention relates to a method for transferring a treatment to be treated Fiber web, in particular paper or board web, of a the Fibrous web donating endless stringing tape to a fibrous web receiving endless stringing tape, which in the transfer area around a suction guide is guided. It further relates to a device for treatment a fibrous web according to the preamble of claim 11, cf. DE 90 01 209 U.
  • the paper web between two sections of a paper machine is characterized convicted that the web receiving, guided around a Saugleitwalze Covering tape in contact with the on the donning tape lying paper web is brought and the web by the generation of a Vacuum in the Saugleitwalze of this on the receiving clothing band is brought.
  • the position of the both strings, each through a sieve, a felt or a drying wire may be formed relative to each other unchanged.
  • the aim of the invention is to provide a method and a device of the type mentioned, which ensure a faster and safer web transfer to minimize the production loss times.
  • this object is achieved according to the invention, that the two clothing bands relative to each other via an operating position Be moved out into a transfer position, in which around the Saugleitwalze guided web-absorbing covering tape in the area of the suction guide roller in the webbing covering tape dips in that the two string tapes after the transfer of the fibrous web relative to each other at least in essential to be moved back to the operating position, and that the negative pressure in the Saugleitwalze is changed so that it is greater in the transfer position than in the operating position.
  • the method is fixed at the suction roller the web-releasing stringing tape moved accordingly to the transfer position or the operating position to reach.
  • the web-dispensing band is preferred moved accordingly via an adjustable guide roller.
  • an adjustable Saugleitwalze is used and on this adjustable Saugleitwalze only the web-absorbing stringing tape moved accordingly to the transfer position or the operating position to reach.
  • the fibrous web can be transferred, for example, machine width. It is however, it is also possible to transfer only one marginal strip or one marginal strip.
  • the negative pressure in the Saugleitwalze example from -2 mWS to about 4 mWS.
  • the device according to the invention for treating a fibrous web is corresponding characterized in that at least one transfer point provided is at which the two stringers relative to each other over a Operating position also be moved into a transfer position, in which the order Saugleitwalze guided web-absorbing stringing tape in the field of Suction roller immersed in the web-issuing stringing tape that the two Covering tapes after the transfer of the fibrous web relative to each other at least substantially be moved back to the operating position and that at the same time the negative pressure in the Saugleitwalze so changeable is that it is greater in the transfer position than in the operating position.
  • An appropriately executed transfer point can, for example, between a former and a press, between a press and a dryer section and / or be provided between two presses. It can be an advantage if at least one press is double-felted.
  • two consecutively arranged presses are at least one and preferably both presses each formed by a shoe press.
  • At least one appropriately executed transfer point provided in the area of a separation point.
  • the stringing tapes can in particular each case by a sieve, a felt or a dryer fabric.
  • At least one suction box may be provided within the loop of the web-dispensing band, for example after a shoe press.
  • at least one suction box can be moved along in the case of a web transfer belt which can be moved according to the web transfer.
  • the negative pressure in the moving suction box is preferably changeable and reducible to the web transfer.
  • the suction box can, however, in principle be stationary despite movable web-issuing clothing tape. In the case that at least one stationary suction box is provided, the negative pressure in this stationary suction box is preferably kept constant.
  • the invention is particularly at machine speeds above 1600 m / min and in particular above 1900 m / min with advantage applicable.
  • Figures 1 and 2 each show a device 10 for the treatment of a fibrous web 12, which is in particular a paper or board web can act.
  • the devices 10 each comprise two in the web running direction L one behind the other arranged double felted shoe presses 14, 16, by their in Bahntaufraum extended press nip 18 and 20 each have a bottom felt 22 and 24 and a Upper felt 26 and 28 is guided.
  • transfer points 44, 46 are the two endless covering bands 22, 28 and 24, respectively, 40 relative to each other beyond an operating position in a transfer position movable, in which the guided around the Saugleitwalze 36 and 42 web-receiving Covering band 28 or 40 in the region of the suction guide roller 36 or 42 in the webbing covering tape 22 and 24 is immersed.
  • the two clothing bands 22, 28 and 24, 40th relative to each other at least substantially moved back to the operating position.
  • the negative pressure in the suction guide roll 36 or 42 is changed in such a way, that it is greater in the transfer position than in the operating position.
  • the web-receiving stringing tape 28 and 40 are from the web dispensing Covering band 22 or 24 spaced apart, preferably in the range of about 5 - 20 cm. This allows for a speed difference between the clothing bands 22 and 28 or 24 and 40 to the respective Transfer points 44 and 46 for train construction, which in longitudinal expansion of the fibrous web 12 or may be necessary to build up tension.
  • Figure 2 shows a closed guide the fibrous web 12 to ensure safe web guidance even at high speeds.
  • the web-dispensing clothing tape 22 and 24 respectively movable, to reach the transfer position or the operating position.
  • the guide roll 48 and 50 shown in a solid line the operating position and with the guide roller shown in a broken line the transfer position indicated.
  • the Saugleitwalze 36 and 42 stationary.
  • the two endless string tapes 22, 28 and 24, 40 usually at a distance from each other, so that at the beginning of the transfer process, these two bands according to the execution must first be merged in Figure 2 until the web receiving Band touches the fibrous web lying on the web issuing belt. Anchuß thereon, the transfer operation in the manner described be continued.
  • An appropriately executed transfer point can also, for example be provided between the former 33 and the press 14.
  • FIG. 2 differs from that according to FIG. 1 further characterized in that within the loop of a respective lower felt 22 or 24 in each case two vacuum boxes 52, 54 and 56, which can be acted upon by negative pressure, 58 are provided.
  • These suction boxes are used to prevent rewetting after the shoe press 14 or 16.
  • the second suction box 54 and 58 moves along become.
  • the negative pressure in the moving suction box 54 or 58 can be changeable, wherein it is preferably reduced to the web transfer to to promote the railway delivery.
  • the second suction box 54 or 58 but also be kept stationary. Especially in the case of such stationary arrangement, the negative pressure in the suction box 54 and 58 also constant be held because the generated holding force by moving away of the Unterfilzes 22 and 24 decreases and thus the fibrous web 12 is easier to remove can be.
  • the first suction box 52 or 56 is usually stationary.

Landscapes

  • Preliminary Treatment Of Fibers (AREA)
  • Paper (AREA)
  • Replacement Of Web Rolls (AREA)

Description

Die vorliegende Erfindung betrifft ein Verfahren zum Überführen einer zu behandelnden Faserstoffbahn, insbesondere Papier- oder Kartonbahn, von einem die Faserstoffbahn abgebenden endlosen Bespannungsband an ein die Faserstoffbahn aufnehmendes endloses Bespannungsband, das im Überführbereich um eine Saugleitwalze geführt ist. Sie betrifft ferner eine Vorrichtung zur Behandlung einer Faserstoffbahn gemäß dem Oberbegriff des Anspruchs 11, vgl. DE 90 01 209 U.The present invention relates to a method for transferring a treatment to be treated Fiber web, in particular paper or board web, of a the Fibrous web donating endless stringing tape to a fibrous web receiving endless stringing tape, which in the transfer area around a suction guide is guided. It further relates to a device for treatment a fibrous web according to the preamble of claim 11, cf. DE 90 01 209 U.

Bisher wird die Papierbahn zwischen zwei Sektionen einer Papiermaschine dadurch überführt, daß das die Bahn aufnehmende, um eine Saugleitwalze geführte Bespannungsband in Kontakt mit der auf dem abgebenden Bespannungsband liegenden Papierbahn gebracht wird und die Bahn durch die Erzeugung eines Unterdrucks in der Saugleitwalze von diesem auf das aufnehmende Bespannungsband gebracht wird. Bei diesem Überführvorgang bleibt die Position der beiden Bespannungsbänder, die jeweils durch ein Sieb, einen Filz oder ein Trockensieb gebildet sein können, relativ zueinander unverändert.So far, the paper web between two sections of a paper machine is characterized convicted that the web receiving, guided around a Saugleitwalze Covering tape in contact with the on the donning tape lying paper web is brought and the web by the generation of a Vacuum in the Saugleitwalze of this on the receiving clothing band is brought. In this transfer process, the position of the both strings, each through a sieve, a felt or a drying wire may be formed relative to each other unchanged.

Diese Vorgehensweise bringt nun aber den Nachteil mit sich, daß die Faserstoffbahn reißen kann und der Überführvorgang des öfteren wiederholt werden muß, was zu einem entsprechenden Produktionsausfall der Papiermaschine führt.
Ziel der Erfindung ist es, ein Verfahren sowie eine Vorrichtung der eingangs genannten Art zu schaffen, die zur Minimierung der Produktionsverlustzeiten eine schnellere und sichere Bahnüberführung gewährleisten.However, this approach brings with it the disadvantage that the fibrous web can break and the transfer process must be repeated several times, which leads to a corresponding loss of production of the paper machine.
The aim of the invention is to provide a method and a device of the type mentioned, which ensure a faster and safer web transfer to minimize the production loss times.

Hinsichtlich des Verfahrens wird diese Aufgabe erfindungsgemäß dadurch gelöst, daß die beiden Bespannungsbänder relativ zueinander über eine Betriebsstellung hinaus in eine Überführstellung bewegt werden, in der das um die Saugleitwalze geführte bahnaufnehmende Bespannungsband im Bereich der Saugleitwalze in das bahnabgebende Bespannungsband eintaucht, daß die beiden Bespannungsbänder nach der Überführung der Faserstoffbahn relativ zueinander zumindest im wesentlichen wieder in die Betriebsstellung bewegt werden, und daß der Unterdruck in der Saugleitwalze so verändert wird, daß er in der Überführstellung größer ist als in der Betriebsstellung.With regard to the method, this object is achieved according to the invention, that the two clothing bands relative to each other via an operating position Be moved out into a transfer position, in which around the Saugleitwalze guided web-absorbing covering tape in the area of the suction guide roller in the webbing covering tape dips in that the two string tapes after the transfer of the fibrous web relative to each other at least in essential to be moved back to the operating position, and that the negative pressure in the Saugleitwalze is changed so that it is greater in the transfer position than in the operating position.

Aufgrund dieser Ausbildung wird der gesamte Überführvorgang bei optimiertem Energieeinsatz (Unterdruck) wesentlich verbessert. Es ist nicht nur eine schnellere, sondern auch eine deutlich zuverlässigere Bahnüberführung möglich. Entsprechend gering können auch die Ausfallzeiten gehalten werden.Due to this training, the entire transfer process is optimized Energy use (negative pressure) significantly improved. It's not just a faster, but also a much more reliable overpass possible. Corresponding Low downtime can also be kept.

Des weiteren ist es vorteilhaft, wenn das um die Saugleitwalze geführte bahnaufnehmende Bespannungsband die vom bahnabgebenden Bespannungsband zugeführte Faserstoffbahn zumindest im wesentlichen berührt, ohne daß diese und das bahnabgebende Bespannungsband die Saugleitwalze umschlingen.Furthermore, it is advantageous if the guided around the suction guide web-receiving Covering tape supplied by the webbing stringing tape Fibrous web at least substantially touched without these and the web-dispensing clothing tape loop around the suction guide roll.

Falls jedoch zum Zugaufbau eine Differenzgeschwindigkeit zwischen dem bahnabgebenden und dem bahnaufnehmenden Bespannungsband erforderlich ist, so sollten beide Bespannungsbänder im Überführbereich in der Betriebsstellung voneinander beabstandet sein.If, however, a speed difference between the lane-giving and the web-receiving stringing tape is required, so Both bandings should be in the transfer area in the operating position be spaced apart.

Bei einer zweckmäßigen praktischen Ausgestaltung des erfindungsgemäßen Verfahrens wird bei feststehender Saugleitwalze das bahnabgebende Bespannungsband entsprechend bewegt, um die Überführstellung bzw. die Betriebsstellung zu erreichen. Dabei wird das bahnabgebende Bespannungsband vorzugsweise über eine verstellbare Leitwalze entsprechend bewegt. In an expedient practical embodiment of the invention The method is fixed at the suction roller the web-releasing stringing tape moved accordingly to the transfer position or the operating position to reach. In this case, the web-dispensing band is preferred moved accordingly via an adjustable guide roller.

Bei einer alternativen Ausgestaltung wird eine verstellbare Saugleitwalze verwendet und über diese verstellbare Saugleitwalze nur das bahnaufnehmende Bespannungsband entsprechend bewegt, um die Überführstellung bzw. die Betriebsstellung zu erreichen.In an alternative embodiment, an adjustable Saugleitwalze is used and on this adjustable Saugleitwalze only the web-absorbing stringing tape moved accordingly to the transfer position or the operating position to reach.

Die Faserstoffbahn kann beispielsweise maschinenbreit überführt werden. Es ist jedoch auch möglich, nur ein Randbändel bzw. einen Randstreifen zu überführen.The fibrous web can be transferred, for example, machine width. It is However, it is also possible to transfer only one marginal strip or one marginal strip.

Zur Bahnüberführung kann der Unterdruck in der Saugleitwalze beispielsweise von etwas -2 mWS auf etwa - 4 mWS erhöht werden.For railway transfer, the negative pressure in the Saugleitwalze example from -2 mWS to about 4 mWS.

Die erfindungsgemäße Vorrichtung zur Behandlung einer Faserstoffbahn ist entsprechend dadurch gekennzeichnet, daß wenigstens eine Überführungsstelle vorgesehen ist, an der die beiden Bespannungsbänder relativ zueinander über eine Betriebsstellung hinaus in eine Überführstellung bewegbar sind, in der das um die Saugleitwalze geführte bahnaufnehmende Bespannungsband im Bereich der Saugleitwalze in das bahnabgebende Bespannungsband eintaucht, daß die beiden Bespannungsbänder nach der Überführung der Faserstoffbahn relativ zueinander zumindest im wesentlichen wieder in die Betriebsstellung bewegbar sind und daß gleichzeitig der Unterdruck in der Saugleitwalze so veränderbar ist, daß er in der Überführstellung größer ist als in der Betriebsstellung.The device according to the invention for treating a fibrous web is corresponding characterized in that at least one transfer point provided is at which the two stringers relative to each other over a Operating position also be moved into a transfer position, in which the order Saugleitwalze guided web-absorbing stringing tape in the field of Suction roller immersed in the web-issuing stringing tape that the two Covering tapes after the transfer of the fibrous web relative to each other at least substantially be moved back to the operating position and that at the same time the negative pressure in the Saugleitwalze so changeable is that it is greater in the transfer position than in the operating position.

Von Vorteil ist es dabei, wenn das um die Saugleitwalze geführte bahnaufnehmende Bespannungsband die vom bahnabgebenden Bespannungsband zugeführte Faserstoffbahn zumindest im wesentlichen berührt, ohne daß diese und das bahnabgebende Bespannungsband die Saugleitwalze umschlingen.It is advantageous if the guided around the Saugleitwalze web-receiving Covering tape supplied by the webbing stringing tape Fibrous web at least substantially touched without these and the web-dispensing clothing tape loop around the suction guide roll.

Falls jedoch zum Zugaufbau eine Geschwindigkeitsdifferenz zwischen dem bahnabgebenden und dem bahnaufnehmenden Bespannungsband erforderlich ist, so sollten beide Bespannungsbänder im Überführbereich in der Betriebsstellung voneinander beabstandet sein.However, if the train construction a speed difference between the lane-giving and the web-receiving stringing tape is required, so Both bandings should be in the transfer area in the operating position be spaced apart.

Eine entsprechend ausgeführte Überführungsstelle kann beispielsweise zwischen einem Former und einer Presse, zwischen einer Presse und einer Trockenpartie und/oder zwischen zwei Pressen vorgesehen sein. Dabei kann es von Vorteil sein, wenn zumindest eine Presse doppelt befilzt ist.An appropriately executed transfer point can, for example, between a former and a press, between a press and a dryer section and / or be provided between two presses. It can be an advantage if at least one press is double-felted.

Bei einer vorteilhaften Ausführungsform mit beispielsweise zwei hintereinander angeordneten Pressen sind wenigstens eine und vorzugsweise beide Pressen jeweils durch eine Schuhpresse gebildet.In an advantageous embodiment with, for example, two consecutively arranged presses are at least one and preferably both presses each formed by a shoe press.

Vorzugsweise ist wenigstens eine entsprechend ausgeführte Überführungsstelle im Bereich einer Trennstelle vorgesehen.Preferably, at least one appropriately executed transfer point provided in the area of a separation point.

Die Bespannungsbänder können insbesondere jeweils durch ein Sieb, einen Filz oder ein Trockensieb gebildet sein.The stringing tapes can in particular each case by a sieve, a felt or a dryer fabric.

Zur Vermeidung einer Rückbefeuchtung kann innerhalb der Schlaufe des bahnabgebenden Bespannungsbandes ,beispielsweise nach einer Schuhpresse, wenigstens ein Saugkasten vorgesehen sein. Vorteilhafterweise ist bei zur Bahnüberführung entsprechend bewegbarem bahnabgebendem Bespannungsband wenigstens ein Saugkasten mitbewegbar. Dabei ist der Unterdruck im mitbewegten Saugkasten vorzugsweise veränderbar und zur Bahnüberführung verringerbar. Der Saugkasten kann jedoch trotz bewegbarem bahnabgebendem Bespannungsband grundsätzlich auch stationär sein.
In dem Fall, daß wenigstens ein stationärer Saugkasten vorgesehen ist, ist der Unterdruck in diesem stationären Saugkasten vorzugsweise konstant gehalten. To avoid rewetting, at least one suction box may be provided within the loop of the web-dispensing band, for example after a shoe press. Advantageously, at least one suction box can be moved along in the case of a web transfer belt which can be moved according to the web transfer. In this case, the negative pressure in the moving suction box is preferably changeable and reducible to the web transfer. The suction box can, however, in principle be stationary despite movable web-issuing clothing tape.
In the case that at least one stationary suction box is provided, the negative pressure in this stationary suction box is preferably kept constant.

Die Erfindung ist insbesondere bei Maschinengeschwindigkeiten oberhalb von 1600 m/min und insbesondere oberhalb 1900 m/min mit Vorteil anwendbar.The invention is particularly at machine speeds above 1600 m / min and in particular above 1900 m / min with advantage applicable.

In den Unteransprüchen sind weitere vorteilhafte Ausführungsformen der Erfindung angegeben.In the subclaims are further advantageous embodiments of the invention specified.

Die Erfindung wird im folgenden anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnung näher erläutert; in dieser zeigen:

Figur 1
eine schematische Darstellung einer ersten Ausführungsform zur Behandlung einer Faserstoffbahn und
Figur 2
eine schematische Darstellung einer weiteren, zusätzlich mit Saugkästen versehenen Ausführungsform einer Vorrichtung zur Behandlung einer Faserstoffbahn.
The invention is explained in more detail below with reference to embodiments with reference to the drawing; in this show:
FIG. 1
a schematic representation of a first embodiment for the treatment of a fibrous web and
FIG. 2
a schematic representation of another, additionally provided with suction boxes embodiment of an apparatus for treating a fibrous web.

Die Figuren 1 und 2 zeigen jeweils eine Vorrichtung 10 zur Behandlung einer Faserstoffbahn 12, bei der es sich insbesondere um eine Papier- oder Kartonbahn handeln kann.Figures 1 and 2 each show a device 10 for the treatment of a fibrous web 12, which is in particular a paper or board web can act.

Die Vorrichtungen 10 umfassen jeweils zwei in Bahnlaufrichtung L hintereinander angeordnete doppelt befilzte Schuhpressen 14, 16, durch deren in Bahntaufrichtung verlängerten Preßspalt 18 bzw. 20 jeweils ein Unterfilz 22 bzw. 24 und ein Oberfilz 26 bzw. 28 geführt ist.The devices 10 each comprise two in the web running direction L one behind the other arranged double felted shoe presses 14, 16, by their in Bahntaufrichtung extended press nip 18 and 20 each have a bottom felt 22 and 24 and a Upper felt 26 and 28 is guided.

Durch den Oberfilz 26 der vorderen Schuhpresse 14 wird die Faserstoffbahn 12 im Bereich einer Saugleitwalze 30 von einem Sieb 32 eines Formers 33 bzw. einer Siebpartie übernommen und in den Preßspalt 18 geführt. Through the top felt 26 of the front shoe press 14, the fibrous web 12th in the region of a suction guide roll 30 of a screen 32 of a former 33 and a Pickup and taken in the press nip 18.

Hinter der vorderen Schuhpresse 14 werden der Unterfilz 22 und die Faserstoffbahn 12 im Bereich einer Saugleitwalze 34 von dem Obersieb 32 getrennt. Im Bereich dieser Trennstelle wird die Faserstoffbahn 12 von dem Unterfilz 22 an den Oberfilz 28 der hinteren Schuhpresse 16 übergeben, der im Überführbereich um eine Saugleitwalze 36 geführt ist. Der Unterfilz 22 ist somit als bahnabgebendes Bespannungsband und der Oberfilz 28 als bahnaufnehmendes Bespannungsband anzusehen. Anschließend wird die Faserstoffbahn 12 durch den Oberfilz 28 in den Preßspalt 20 der hinteren Schuhpresse 16 geführt.Behind the front shoe press 14 are the underfelt 22 and the fibrous web 12 separated in the region of a Saugleitwalze 34 of the upper sieve 32. In the area This separation point is the fibrous web 12 from the lower felt 22 to the Upper felt 28 of the rear shoe press 16 pass, which in the transfer area to a suction guide roller 36 is guided. The lower felt 22 is thus as web-issuing Covering tape and the upper felt 28 as a web-absorbing covering tape to watch. Subsequently, the fibrous web 12 through the top felt 28 in the Press nip 20 of the rear shoe press 16 out.

Im Anschluß an diese hintere Schuhpresse 16 werden der Unterfilz 24 und die Faserstoffbahn 12 im Bereich einer Saugleitwalze 38 von dem Oberfilz 28 getrennt. Im Bereich dieser Trennstelle wird die Faserstoffbahn 12 von dem Unterfilz 24 beispielsweise an ein Trockensieb 40 einer Trockenpartie 41 übergeben, das im Überführbereich um eine Saugleitwalze 42 geführt ist. Der Unterfilz 24 ist somit als bahnabgebendes Bespannungsband und der Trockenfilz 40 als bahnaufnehmendes Bespannungsband anzusehen.Following this rear shoe press 16 of the underfelt 24 and the Fiber web 12 in the region of a Saugleitwalze 38 separated from the upper felt 28. In the region of this separation point, the fibrous web 12 of the lower felt 24 passed, for example, to a drying wire 40 a dryer section 41, the is guided in the transfer area to a Saugleitwalze 42. The underfelt 24 is thus as webbing stringing tape and the dry felt 40 as web absorbing To look at the string.

An den beiden im Bereich der Saugleitwalzen 36, 42 vorgesehenen Überführungsstellen 44, 46 sind die beiden endlosen Bespannungsbänder 22, 28 bzw. 24, 40 relativ zueinander über eine Betriebsstellung hinaus in eine Überführstellung bewegbar, in der das um die Saugleitwalze 36 bzw. 42 geführte bahnaufnehmende Bespannungsband 28 bzw. 40 im Bereich der Saugleitwalze 36 bzw. 42 in das bahnabgebende Bespannungsband 22 bzw. 24 eintaucht. Nach der Überführung der Faserstoffbahn 12 werden die beiden Bespannungsbänder 22, 28 bzw. 24, 40 relativ zueinander zumindest im wesentlichen wieder in die Betriebsstellung bewegt. Gleichzeitig wird der Unterdruck in der Saugleitwalze 36 bzw. 42 so verändert, daß er in der Überführstellung größer ist als in der Betriebsstellung.At the two provided in the region of Saugleitwalzen 36, 42 transfer points 44, 46 are the two endless covering bands 22, 28 and 24, respectively, 40 relative to each other beyond an operating position in a transfer position movable, in which the guided around the Saugleitwalze 36 and 42 web-receiving Covering band 28 or 40 in the region of the suction guide roller 36 or 42 in the webbing covering tape 22 and 24 is immersed. After the transfer the fibrous web 12, the two clothing bands 22, 28 and 24, 40th relative to each other at least substantially moved back to the operating position. At the same time, the negative pressure in the suction guide roll 36 or 42 is changed in such a way, that it is greater in the transfer position than in the operating position.

In Figur 1 sind das bahnaufnehmende Bespannungsband 28 bzw. 40 vom bahnabgebenden Bespannungsband 22 bzw. 24 voneinander beabstandet, vorzugsweise im Bereich von ca. 5 - 20 cm. Dies ermöglicht eine Geschwindigkeitsdifferenz zwischen den Bespannungsbändern 22 und 28 bzw. 24 und 40 an den jeweiligen Überführstellen 44 bzw. 46 zum Zugaufbau, was bei Längsdehnung der Faserstoffbahn 12 bzw. zum Spannungsaufbau notwendig sein kann.In Figure 1, the web-receiving stringing tape 28 and 40 are from the web dispensing Covering band 22 or 24 spaced apart, preferably in the range of about 5 - 20 cm. This allows for a speed difference between the clothing bands 22 and 28 or 24 and 40 to the respective Transfer points 44 and 46 for train construction, which in longitudinal expansion of the fibrous web 12 or may be necessary to build up tension.

Im Gegensatz hierzu zeigt Figur 2 eine geschlossene Führung der Faserstoffbahn 12 zur Gewährleistung einer sicheren Bahnführung auch bei hohen Geschwindigkeiten. Hierzu berührt das um die Saugleitwalze 36 bzw. 42 geführte bahnaufnehmende Bespannungsband 28 bzw. 40 die vom bahnabgebenden Bespannungsband 22 bzw. 24 zugeführte Faserstoffbahn 12 zumindest im wesentlichen, ohne daß die Faserstoffbahn 12 und das bahnabgebende Bespannungsband die Saugleitwalze umschlingen.In contrast, Figure 2 shows a closed guide the fibrous web 12 to ensure safe web guidance even at high speeds. For this purpose touches the guided around the Saugleitwalze 36 and 42 web-receiving Covering band 28 or 40 from the web-dispensing band 22 or 24 fed fibrous web 12 at least substantially, without the fibrous web 12 and the web-dispensing tape the Wrap around the suction guide roll.

Bei den vorliegenden Ausführungsbeispielen ist bei feststehender Saugleitwalze 36 bzw. 42 das bahnabgebende Bespannungsband 22 bzw. 24 entsprechend bewegbar, um die Überführstellung bzw. die Betriebsstellung zu erreichen. Dabei kann das bahnabgebende Bespannungsband 22 bzw. 24 in der in den Figuren 1 und 2 dargestellten Weise über eine verstellbare Leitwalze 48 bzw. 50 entsprechend bewegbar sein. Bei den in den Figuren 1 und 2 dargestellten Ausführungsformen ist mit der in einer durchgehenden Linie dargestellten Leitwalze 48 bzw. 50 die Betriebsstellung und mit der in einer unterbrochenen Linie dargestellten Leitwalze die Überführstellung angedeutet. Bei den vorliegenden Ausführungsbeispielen ist die Saugleitwalze 36 bzw. 42 stationär.In the present embodiments is at fixed Saugleitwalze 36 and 42, the web-dispensing clothing tape 22 and 24 respectively movable, to reach the transfer position or the operating position. there can the web-dispensing tape 22 and 24 in the in the figures 1 and Fig. 2 via an adjustable guide roller 48 and 50, respectively be movable. In the embodiments shown in Figures 1 and 2 is with the guide roll 48 and 50 shown in a solid line the operating position and with the guide roller shown in a broken line the transfer position indicated. In the present embodiments is the Saugleitwalze 36 and 42 stationary.

Vor einem jeweiligen Überführvorgang weisen die beiden endlosen Bespannungsbänder 22, 28 bzw. 24, 40 in der Regel einen Abstand voneinander auf, so daß zu Beginn des Überführvorgangs diese beiden Bänder gemäß der Ausführung in Figur 2 zunächst zusammengeführt werden müssen, bis das bahnaufnehmende Band die auf dem bahnabgebenden Band liegende Faserstoffbahn berührt. Im Anschuß daran kann der Überführvorgang in der beschriebenen Weise fortgeführt werden.Before a respective transfer operation, the two endless string tapes 22, 28 and 24, 40 usually at a distance from each other, so that at the beginning of the transfer process, these two bands according to the execution must first be merged in Figure 2 until the web receiving Band touches the fibrous web lying on the web issuing belt. Anchuß thereon, the transfer operation in the manner described be continued.

Eine entsprechend ausgeführte Überführungsstelle kann überdies beispielsweise auch zwischen dem Former 33 und der Presse 14 vorgesehen sein.An appropriately executed transfer point can also, for example be provided between the former 33 and the press 14.

Die Ausführungsform gemäß Figur 2 unterscheidet sich von der gemäß Figur 1 des weiteren dadurch, daß innerhalb der Schlaufe eines jeweiligen Unterfilzes 22 bzw. 24 jeweils zwei mit Unterdruck beaufschlagbare Saugkästen 52, 54 bzw. 56, 58 vorgesehen sind. Dabei ist jeweils ein Saugkasten 52 bzw. 56 zwischen der Schuhpresse 14 bzw. 16 und der darauffolgenden Saugleitwalze 34 bzw. 38 und ein Saugkasten 54 bzw. 58 zwischen den beiden Saugleitwalzen 34, 36 bzw. 38, 42 angeordnet. Diese Saugkästen dienen der Vermeidung einer Rückbefeuchtung nach der Schuhpresse 14 bzw. 16.The embodiment according to FIG. 2 differs from that according to FIG. 1 further characterized in that within the loop of a respective lower felt 22 or 24 in each case two vacuum boxes 52, 54 and 56, which can be acted upon by negative pressure, 58 are provided. In each case, a suction box 52 or 56 between the Shoe press 14 or 16 and the subsequent suction guide 34 and 38 and a suction box 54 or 58 between the two Saugleitwalzen 34, 36 and 38, 42 arranged. These suction boxes are used to prevent rewetting after the shoe press 14 or 16.

Bei zur Bahnüberführung entsprechend bewegbarem bahnabgebendem Bespannungsband oder Unterfilz 22 bzw. 24 kann der zweite Saugkasten 54 bzw. 58 mitbewegt werden. Der Unterdruck im mitbewegten Saugkasten 54 bzw. 58 kann veränderbar sein, wobei er zur Bahnüberführung vorzugsweise verringert wird, um die Bahnabgabe zu fördern. Grundsätzlich kann der zweite Saugkasten 54 bzw. 58 jedoch auch stationär gehalten werden. Insbesondere im Fall einer solchen stationären Anordnung kann der Unterdruck im Saugkasten 54 bzw. 58 auch konstant gehalten werden, da die erzeugte Haltekraft durch ein Wegbewegen des Unterfilzes 22 bzw. 24 abnimmt und somit die Faserstoffbahn 12 leichter abgenommen werden kann.For web transfer correspondingly movable web-releasing stringing tape or Unterfilz 22 and 24, the second suction box 54 and 58 moves along become. The negative pressure in the moving suction box 54 or 58 can be changeable, wherein it is preferably reduced to the web transfer to to promote the railway delivery. Basically, the second suction box 54 or 58 but also be kept stationary. Especially in the case of such stationary arrangement, the negative pressure in the suction box 54 and 58 also constant be held because the generated holding force by moving away of the Unterfilzes 22 and 24 decreases and thus the fibrous web 12 is easier to remove can be.

Der erste Saugkasten 52 bzw. 56 ist in der Regel stationär. The first suction box 52 or 56 is usually stationary.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Vorrichtungcontraption
1212
FaserstoffbahnFibrous web
1414
Schuhpresseshoe press
1616
Schuhpresseshoe press
1818
verlängerter Preßspaltextended press nip
2020
verlängerter Preßspaltextended press nip
2222
bahnabgebendes Bespannungsband, Unterfilzwebbing stringing tape, underfelt
2424
bahnabgebendes Bespannungsband, Unterfilzwebbing stringing tape, underfelt
2626
Oberfilzoverfelt
2828
bahnaufnehmendes Bespannungsband, OberfilzRailway-absorbing stringing tape, top felt
3030
Saugleitwalzesuction guide
3232
Siebscree
3333
Formermolder
3434
Saugleitwalzesuction guide
3636
Saugleitwalzesuction guide
3838
Saugleitwalzesuction guide
4040
bahnaufnehmendes Bespannungsband, Trockensiebweb-absorbing stringing tape, drying wire
4141
Trockenpartiedrying section
4242
Saugleitwalzesuction guide
4444
ÜberführungsstelleTransfer point
4646
ÜberführungsstelleTransfer point
4848
verstellbare Leitwalzeadjustable guide roller
5050
verstellbare Leitwalzeadjustable guide roller
5252
Saugkasten suction box
5454
Saugkastensuction box
5656
Saugkastensuction box
5858
Saugkastensuction box
LL
BahnlaufrichtungWeb direction

Claims (29)

  1. Process for transferring a fibrous web (12) to be treated, in particular a paper or board web, from an endless clothing belt (22; 24) which discharges the fibrous web (12) to an endless clothing belt (28; 40) which picks up the fibrous web (12) and, in the transfer region, is guided around a suction guide roll (36; 42),
    characterized in that, the two clothing belts (22, 28; 24, 40) are moved relative to each other beyond an operating position into a transfer position, in which the clothing belt (28; 40) that picks up the web and is guided around the suction guide roll (36; 42) dips into the clothing belt (22; 24) that discharges the web in the region of the suction guide roll (36; 42)
    in that, following the transfer of the fibrous web (12), the two clothing belts (22, 28; 24, 40) are moved relative to each other at least substantially into the operating position again,
    and in that the vacuum in the suction guide roll (36; 42) is changed in such a way that it is higher in the transfer position than in the operating position.
  2. Process according to Claim 1, characterized in that, in the transfer region, the clothing belt (22, 24) that discharges the web and the clothing belt (28, 40) that picks up the web are spaced apart from each other in the operating position.
  3. Process according to Claim 1, characterized in that, in the operating position, the clothing belt (28; 40) that picks up the web and is guided around the suction guide roll (36; 42) at least substantially touches the fibrous web (12) supplied by the clothing belt (22; 24) that discharges the web, without the said fibrous web (12) and the clothing belt (22; 24) that discharges the web wrapping around the suction guide roll (36; 42).
  4. Process according to one of the preceding claims, characterized in that, with the suction guide roll (36; 42) stationary, the clothing belt (22; 24) that discharges the web is moved appropriately in order to reach the transfer position or the operating position.
  5. Process according to Claim 4, characterized in that the clothing belt (22; 24) that discharges the web is moved appropriately via an adjustable guide roll (48; 50).
  6. Process according to one of Claims 1 to 3, characterized in that an adjustable suction guide roll (36; 42) is used and, via this adjustable suction guide roll (36; 42), only the clothing belt (28; 40) that picks up the web is moved appropriately in order to reach the transfer position or the operating position.
  7. Process according to one of the preceding claims, characterized in that the fibrous web (12) is transferred at machine width.
  8. Process according to one of Claims 1 to 6, characterized in that only a marginal ribbon or strip is transferred.
  9. Process according to one of Claims 2 to 8, characterized in that the vacuum in the suction guide roll (36; 42) is increased from about -2 mWG to about -4 mWG in order to transfer the web.
  10. Apparatus (10) for treating a fibrous web (12), in particular a paper or board web, having at least one transfer point (44, 46), at which the fibrous web (12) is transferred from an endless clothing belt (22; 24) that discharges the fibrous web (12) to an endless clothing belt (28; 40) that picks up the fibrous web (12) and, in the transfer region, is guided around a suction guide roll (36; 42), in particular for carrying out the process according to one of the preceding claims,
    characterized in that at least one transfer point (44, 46) is provided, at which the two clothing belts (22, 28; 24, 40) can be moved relative to each other beyond an operating position into a transfer position, in which the clothing belt (28; 40) that picks up the web and is guided around the suction guide roll (36; 42) dips into the clothing belt (22; 24) that discharges the web in the region of the suction guide roll (36; 42), in that, following the transfer of the fibrous web (12), the two clothing belts (22, 28; 24, 40) can be moved relative to each other at least substantially into the operating position again, and in that the vacuum in the suction guide roll (36; 42) can be changed in such a way that it is higher in the transfer position than in the operating position.
  11. Apparatus according to Claim 10, characterized in that, in the transfer region, the clothing belt (22, 24) that discharges the web and the clothing belt (28, 40) that picks up the web are spaced apart from each other in the operating position.
  12. Apparatus according to Claim 10, characterized in that, in the operating position, the clothing belt (28; 40) that picks up the web and is guided around the suction guide roll (36; 42) at least substantially touches the fibrous web (12) supplied by the clothing belt (22; 24) that discharges the web, without the said fibrous web (12) and the clothing belt (22; 24) that discharges the web wrapping around the suction guide roll (36; 42).
  13. Apparatus according to one of Claims 10 to 12, characterized in that, with the suction guide roll (36; 42) stationary, the clothing belt (22; 24) that discharges the web can be moved appropriately in order to reach the transfer position or the operating position.
  14. Apparatus according to Claim 13, characterized in that the clothing belt (22; 24) that discharges the web can be moved appropriately via an adjustable guide roll (48; 50).
  15. Apparatus according to Claim 14, characterized in that the suction guide roll (36; 42) is adjustable and, via this adjustable suction guide roll (36; 42), only the clothing belt (28; 40) that picks up the web can be moved appropriately in order to reach the transfer position or the operating position.
  16. Apparatus according to one of the preceding claims, characterized in that the fibrous web (12) can be transferred at machine width.
  17. Apparatus according to one of Claims 10 to 15, characterized in that only a marginal ribbon or strip can be transferred.
  18. Apparatus according to one of the preceding claims, characterized in that an appropriately designed transfer point is provided at least between a former (33) and a press (14).
  19. Apparatus according to one of the preceding claims, characterized in that an appropriately designed transfer point (46) is provided at least between a press (16) and a drying section (41).
  20. Apparatus according to one of the preceding claims, characterized in that an appropriately designed transfer point (44) is provided at least between two presses (14, 16).
  21. Apparatus according to one of the preceding claims, characterized in that at least one press (14, 16) is double-felted.
  22. Apparatus according to Claim 20 or 21, characterized in that at least one and preferably both presses are in each case formed by a shoe press (14, 16).
  23. Apparatus according to one of the preceding claims, characterized in that at least one appropriately designed transfer point (44, 46) is provided in the region of a separation point.
  24. Apparatus according to one of the preceding claims, characterized in that the clothing belts (22, 28; 24, 40) are in each case formed by a wire, a felt or a drying fabric.
  25. Apparatus according to one of the preceding claims, characterized in that at least one suction box (52, 54; 56, 58) is provided inside the loop of the clothing belt (22; 24) that discharges the web.
  26. Apparatus according to Claim 25, characterized in that, in the case of the clothing belt (22; 24) that discharges the web and can be moved appropriately for the web transfer, at least one suction box (54, 58) can be moved concomitantly.
  27. Apparatus according to Claim 26, characterized in that the vacuum in the suction box (54; 58) that can be moved concomitantly can be changed and can be reduced for the web transfer.
  28. Apparatus according to one of the preceding claims, characterized in that at least one stationary suction box (52, 54; 56, 58) is provided.
  29. Apparatus according to Claim 28, characterized in that the vacuum in the stationary suction box (52, 54; 56, 58) is kept constant.
EP00121725A 1999-11-16 2000-10-05 Process for transfering a fibrous web Expired - Lifetime EP1101864B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19955030 1999-11-16
DE1999155030 DE19955030A1 (en) 1999-11-16 1999-11-16 Transfer of paper/cardboard web between stations in papermaking/cardboard machine, comprises shifting movements of delivery and pick-up belts for clean and rapid transfer without loss of production time
DE10015357 2000-03-28
DE2000115357 DE10015357A1 (en) 2000-03-28 2000-03-28 Web transfer between stations of a papermaking/cardboard prodn machine has the delivery belt and the pick-up belt and suction guide roller moved into a transfer position into each other and then returned to the working positions

Publications (3)

Publication Number Publication Date
EP1101864A2 EP1101864A2 (en) 2001-05-23
EP1101864A3 EP1101864A3 (en) 2002-11-13
EP1101864B1 true EP1101864B1 (en) 2005-03-02

Family

ID=26005059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00121725A Expired - Lifetime EP1101864B1 (en) 1999-11-16 2000-10-05 Process for transfering a fibrous web

Country Status (2)

Country Link
EP (1) EP1101864B1 (en)
DE (1) DE50009627D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI114647B (en) 2003-07-02 2004-11-30 Metso Paper Inc An arrangement for controlling the web with a press section of a paper or board machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708389A (en) * 1968-12-02 1973-01-02 Beloit Corp Web pickup arrangement for papermaking machines
US4854053A (en) * 1987-04-30 1989-08-08 Beloit Corporation Transfer apparatus
DE9001209U1 (en) * 1990-02-03 1990-04-05 J.M. Voith Gmbh, 7920 Heidenheim, De
DE4124648A1 (en) * 1991-07-25 1993-01-28 Escher Wyss Gmbh Paper-making drying groups - has web transfer between fourdrinier(s) without change of direction
DE19511988C1 (en) * 1995-03-31 1996-08-01 Voith Sulzer Papiermasch Gmbh Paper mfg. press section for improved drainage and availability

Also Published As

Publication number Publication date
EP1101864A3 (en) 2002-11-13
EP1101864A2 (en) 2001-05-23
DE50009627D1 (en) 2005-04-07

Similar Documents

Publication Publication Date Title
DE4224730C1 (en) Tissue paper mfg. machine preventing moisture return - comprises shoe press for press unit(s) for drying tissue web, for min. press units
EP0509199B2 (en) Press section for a papermachine
DE3328162C2 (en) Paper machine
WO2006114343A1 (en) Machine for the production of a fiber web
EP1749927B1 (en) Device for dewatering a fibrous web
EP0857818B1 (en) Machine to manufacture a fibrous web
EP1101864B1 (en) Process for transfering a fibrous web
AT15442U1 (en) press apparatus
EP1739228B1 (en) Machine for manufacturing a fibrous web
AT521367B1 (en) DEVICE AND METHOD FOR CONVERTING A STRIP OF A TRAIN
DE19713645A1 (en) Papermaking machine web transfer
EP0751255A1 (en) Apparatus for dewatering a fibrous web
EP0870866B1 (en) Apparatus and process for the dewatering of a web
DE19708967A1 (en) Papermaking machine press section
AT521368B1 (en) DEVICE AND METHOD FOR CONVERTING A STRIP OF A TRAIN
DE19955030A1 (en) Transfer of paper/cardboard web between stations in papermaking/cardboard machine, comprises shifting movements of delivery and pick-up belts for clean and rapid transfer without loss of production time
EP0689627A1 (en) Traction-free web transport in a compression section
DE29924918U1 (en) Transfer of paper/cardboard web between stations in papermaking/cardboard machine, comprises shifting movements of delivery and pick-up belts for clean and rapid transfer without loss of production time
AT520825B1 (en) Apparatus and method for transferring a strip of a web
DE102007026931A1 (en) drying section
DE19922893A1 (en) Web transfer action between processing stations uses a cut edge strip which is divided into part-strips which are overlaid to reduce the risk of shearing during the transfer movement between the stations
DE4309053A1 (en) Paper-making machine - has continuous elastic belt to carry web through roller gps. to prevent web damage and distortion
EP0764738A1 (en) Process and machine for making fibrous webs
DE102005055260A1 (en) Machine making paper, card or other fibrous webs, includes guide at start of drying section to lead transfer strip through acute angle to cord cutter
DE10022605A1 (en) Web press section for the production of paper/cardboard/tissue has at least two roller press gaps in succession with structured continuous blanket belts and travel paths to prevent extracted water returning to the web

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20030513

AKX Designation fees paid

Designated state(s): DE FI SE

17Q First examination report despatched

Effective date: 20040127

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FI SE

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50009627

Country of ref document: DE

Date of ref document: 20050407

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20051205

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20091014

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101006

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20191021

Year of fee payment: 20

Ref country code: FI

Payment date: 20191022

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 50009627

Country of ref document: DE

REG Reference to a national code

Ref country code: FI

Ref legal event code: MAE