EP1348809A1 - Coating apparatus - Google Patents

Coating apparatus Download PDF

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Publication number
EP1348809A1
EP1348809A1 EP03100674A EP03100674A EP1348809A1 EP 1348809 A1 EP1348809 A1 EP 1348809A1 EP 03100674 A EP03100674 A EP 03100674A EP 03100674 A EP03100674 A EP 03100674A EP 1348809 A1 EP1348809 A1 EP 1348809A1
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EP
European Patent Office
Prior art keywords
web
coating
stations
followed
station
Prior art date
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Granted
Application number
EP03100674A
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German (de)
French (fr)
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EP1348809B1 (en
Inventor
Kurt Eichinger
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Voith Patent GmbH
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Voith Paper Patent GmbH
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Publication of EP1348809A1 publication Critical patent/EP1348809A1/en
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/70—Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group
    • D21H23/72—Plural serial stages only
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/24—Addition to the formed paper during paper manufacture
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/04—Physical treatment, e.g. heating, irradiating
    • D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper

Definitions

  • the invention relates to a device with the preamble of claim 1 specified features.
  • Such a device is known from the practice of online carton coating.
  • the web guide and the arrangement of the contactless drying devices extend over several machine levels, which is associated with a considerable outlay on parts of the frame and with a high static load.
  • the coating station for treating the upper side of the web with a primer is provided in this machine in the machine direction. This is followed by a second coating station for the top coat, followed by a third coating station for the rear of the web.
  • a second coating station for the top coat is followed by a third coating station for the rear of the web.
  • the invention is therefore based on the object of an arrangement or device for multiple application to a fibrous web, in particular cardboard web create that is simpler than before and also user-friendly.
  • Another advantage of the inventive solution is that a Weight reduction is achievable due to the fewer parts of the chair.
  • the arrangement is also characterized by a high level of user friendliness and above all, good "runability" due to the very short train paths (train paths).
  • the invention is particularly suitable for the treatment of a cardboard web with a basis weight in the range from 150 to 450 g / m 2 , which is weak in tension due to its structure, because it mostly consists of waste paper. Therefore, such a web is usually to be provided with a multiple, successive order.
  • a machine 1 for producing a cardboard web 2 is shown in the figure a pre-dryer section l consisting of a double-row cylinder group, one Coating section II and also from a double-row cylinder group existing after-dryer section III.
  • the pre and post-curl section have one usual design.
  • the web 2 to be treated is coming from a rolling device 3, via a system of guide rollers 4, from which are only numbered in the figure for reasons of clarity, for String section II directed.
  • the bowed section II consists of four in the selected direction in the main direction or machine direction L coating stations 5 arranged one behind the other, wherein two stations are provided on each side of the track.
  • the coating stations for one web side each, i.e. station 5.1 and 5.3 for Treatment of the web side 2a and the stations 5.2 and 5.4 for the treatment of the other web side 2b are of the same type, d. H. same type.
  • the stations 5.2 and 5.4 from the right side can be monitored by the operating personnel P and the stations 5.2 and 5.4 by the left side. This is also located on this control or growth page selected work A of the coating station 5.
  • all coating stations for direct application of the medium are like Coating paint, glue or starch provided on the web 2, the web 2 by one Support or counter roller W runs.
  • the medium is preferably applied with a nozzle applicator from below, so that the operating personnel P the Can monitor the coating process well.
  • Recognizable doctor element can apply the applied medium to the required Streak weight doctored or, if desired, only evened out.
  • the cardboard web 2 has a weight per unit area of approximately 450 g / m 2 .
  • Another variant can be included exist that the aforementioned coating stations 5.1 and 5.2 for pre-painting be used.
  • a top coat is then carried out with the coating station 5.3 for the back 2a and with the coating station 5.4 for the top 2b.
  • web 2 runs from the pre-dryer section l, directly the Coating station 5.2, as indicated by a dash-dotted line in the figure. However, if a primer is to be carried out, the web takes the one with continuous Line marked route to station 5.1.
  • station 5.2 It is also conceivable to omit station 5.2, for example. In this case the web 2 of I from station 5.3 and / or station 5.4 are fed without that the path that brings the train to the desired coating station changes must become.
  • lane 2 is both the station 5.1 as well as station 5.3 in the forward direction (analog running direction L) and in can be fed horizontally and on the other hand, the web is the stations 5.2 and 5.4 also horizontal again, but here only a short distance in the reverse direction fed.
  • the modular, very short train design ensures the construction Coating stations very beneficial.
  • the web 2 becomes hot air dryers, i.e. supplied to contactless drying devices.
  • the contactless drying devices (these are devices 8 and 10) for the Drying of the layer applied to the respective web side 2a or 2b are also of the same design and are on the same common level 7, which are parallel to the foundation 6 and above the coating stations 5.1 to 5.4 runs.
  • the coating section therefore only consists of two main levels, level 6 (Foundation) on which all coating stations 5.1 to 5.4 (and possibly further) are arranged and the main level 7 for all contactless dryers 8 and 10.
  • the coating station 5.1 and also the Coating station 5.3 each have a non-contact web deflection device 8 (this is a the above-mentioned contactless drying device), a so-called airturn, is subordinate.
  • the Airturn dries that with its hot air jets at the same time applied coating medium.
  • the web deflected downwards with the device 8 becomes a cooled cylinder 9 supplied, with which a cooling of the web to about 50 ° C is possible before this is coated again on one or the other side of the web.
  • the coating stations 5.2 and 5.4 are also contactless dryers downstream. These drying devices 10 are horizontal Pathway arranged above level 7.
  • These devices 10 (at least the one that the coating station 5.2 a separate train group in the form of the cooled cylinder 9.
  • each drying device 8 and 10 are so-called IR (infrared) dryers 11 upstream.
  • the last coating station is followed by the after-dryer section III, which can be equipped with a so-called curl control, not shown.
  • the web can then be wound up or further processing steps can be added for finishing.
  • both short dwell time aggregates ie with a short exposure time of the medium, referred to in technical jargon as SDTA
  • free jet nozzles sold by the applicant's company as JetFlow F
  • application rollers designed as a scoop roller the so-called long dwell time units (with a long exposure time, referred to in technical jargon as LDTA).
  • LDTA long exposure time

Landscapes

  • Paper (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Massaging Devices (AREA)

Abstract

A carton-making assembly (1) rests on a base (6) and applies two or more coatings of liquid or paste to both sides (2a, 2b) of a pre-dried fibre web. Each coating station (5) is followed by a non-contact drier (8, 10). Each coating station is esp. of the same type. The web feed direction to each drying station is identical. The top and bottom drying stations are identical and are located in the same plane (7). As seen in the direction of web movement (L) the first coating station (5.1) applies a foundation coat to the web (2) rear face (2a). The second coating station (5.2) applies a foundation coat to the top side (2b) of the web. The third coating station (5.3) applies a final coat to the top side (2a) of the web. The fourth coating station (5.4) applies a final coat to the web upper face (2b). The direct-coating stations (5.1-5.4) operate in that sequence and rest on the same foundation. The top (2b) stations apply a coat containing approx. 60 per cent solids and are each followed by an infra-red drier (11) and a hot air drier (10). The bottom stations (2a) are followed by an infra-red drier (11) and an airturn (8) and cooling cylinder (9).

Description

Die Erfindung betrifft eine Vorrichtung mit den im Oberbegriff des Anspruches 1 angegebenen Merkmalen.The invention relates to a device with the preamble of claim 1 specified features.

Eine derartige Vorrichtung ist aus der Praxis des online - Kartonstreichens bekannt.Such a device is known from the practice of online carton coating.

Bei der bekannten Streichanlage erstreckt sich die Bahnführung und die Anordnung der kontaktlosen Trocknungseinrichtungen über mehrere Maschinenebenen in die Höhe, was mit einem erheblichen Aufwand an Stuhlungsteilen und mit einer hohen statischen Belastung verbunden ist.
Außerdem ist bei dieser Anlage in Maschinenlaufrichtung zuerst die Streichstation zur Behandlung der Bahn - Oberseite mit einem Vorstrich vorgesehen. Danach schließt sich eine zweite Streichstation für den Deckstrich der Oberseite an, der eine dritte Streichstation für die Rückseite der Bahn folgt. Da hierbei aber im Anschluss an das Vorstreichen der Bahn - Oberseite, als zweiter Behandlungsschritt, die Bahn - Rückseite beschichtet bzw. imprägniert wird, ist somit ein enorm langer Bahnlaufweg von der ersten zur dritten und danach zurück zur zweiten Streichstation notwendig. Dieser lange und umständliche Bahnlaufweg kann das sogenannte "runability" (Bahnlaufverhalten) negativ beinträchtigen.In the known coating system, the web guide and the arrangement of the contactless drying devices extend over several machine levels, which is associated with a considerable outlay on parts of the frame and with a high static load.
In addition, the coating station for treating the upper side of the web with a primer is provided in this machine in the machine direction. This is followed by a second coating station for the top coat, followed by a third coating station for the rear of the web. However, since after the pre-coating of the web top, as a second treatment step, the back of the web is coated or impregnated, an enormously long web travel path from the first to the third and then back to the second coating station is necessary. This long and cumbersome path of web travel can have a negative impact on so-called "runability".

Im Falle eines Bahnabrisses in einer oberen Ebene gestaltet sich die Entfernung der Bahnreste schwierig, was als weiterer Nachteil der bekannten Anordnung anzusehen ist. In the event of a web break in an upper level, the distance of the Remains of web difficult, which is to be regarded as a further disadvantage of the known arrangement is.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Anordnung bzw. Vorrichtung zum mehrfachen Auftragen auf eine Faserstoffbahn, insbesondere Kartonbahn, zu schaffen, die einfacher als bisher aufgebaut und auch bedienerfreundlich ist.The invention is therefore based on the object of an arrangement or device for multiple application to a fibrous web, in particular cardboard web create that is simpler than before and also user-friendly.

Diese Aufgabe wird durch die im Kennzeichen des Anspruches 1 angegebenen Merkmale gelöst.This object is indicated by the characterizing part of claim 1 Features resolved.

Damit steht eine modulare Bauweise zur Verfügung, die gestattet, dass für das Beschichten bzw. Pigmentieren und/ oder Leimen und/oder Imprägnieren der Faserstoffbahn gleich aufgebaute Stationen und Bahnlaufwege pro Bahnseite verwendet werden können.
Ein Vorteil der Erfindung ist, dass eine beliebige Anzahl von Streichstationen modulhaft und problemlos in den Bahnherstellungsprozess integrierbar sind. Dabei ist die Anzahl der Stationen für gewünschte weitere Striche pro Bahnseite vermehrbar oder bei Nichterfordernis auch reduzierbar, ohne dass der bisherige Weg der Faserstoffbahn über Zusatzebenen oder Ausbau von Ebenen verändert werden muss.
Das Gesamtkonzept der Streichpartie kann damit im Wesentlichen unverändert bleiben.This means that a modular design is available which allows stations and web paths of the same structure to be used for each side of the web for coating or pigmenting and / or gluing and / or impregnating the fibrous web.
An advantage of the invention is that any number of coating stations can be integrated into the web production process in a modular manner and without any problems. The number of stations for the desired additional strokes per web side can be increased or, if not required, can also be reduced without having to change the previous path of the fibrous web via additional levels or expansion of levels.
The overall concept of the coating section can thus remain essentially unchanged.

Ein weiterer Vorteil der erfinderischen Lösung besteht darin, dass eine Gewichtsreduzierung infolge der weniger vorhandenen Stuhlungsteile erreichbar ist. Das Anordnung zeichnet sich außerdem durch eine hohe Bedienerfreundlichkeit und vor allem gute "runability" infolge der sehr kurzen Bahnzüge (Bahnlaufwege) aus.Another advantage of the inventive solution is that a Weight reduction is achievable due to the fewer parts of the chair. The arrangement is also characterized by a high level of user friendliness and above all, good "runability" due to the very short train paths (train paths).

Die Erfindung ist besonders geeignet für die Behandlung einer Kartonbahn mit einem Flächengewicht im Bereich von 150 bis 450 g/m2, die aufgrund ihrer Struktur zugschwach ist, weil diese zumeist aus Altpapieranteilen besteht. Deshalb ist eine solche Bahn in der Regel mit einem mehrfachen, nacheinanderfolgenden Auftrag zu versehen. The invention is particularly suitable for the treatment of a cardboard web with a basis weight in the range from 150 to 450 g / m 2 , which is weak in tension due to its structure, because it mostly consists of waste paper. Therefore, such a web is usually to be provided with a multiple, successive order.

Vorteilhafte Ausgestaltungsvarianten der Erfindung sind aus den Unteransprüchen entnehmbar.Advantageous design variants of the invention are from the subclaims removable.

Nachfolgend soll die Erfindung anhand eines Ausführungsbeispieles näher erläutert werden.The invention will be explained in more detail below using an exemplary embodiment become.

In der Figur ist eine Vorrichtung zum Herstellen einer beidseitig und doppelt gestrichenen Kartonbahn schematisch dargestellt.In the figure is a device for making one on both sides and double coated cardboard sheet shown schematically.

Gezeigt sind in der Figur eine Maschine 1 zur Herstellung einer Kartonbahn 2 mit einer aus einer doppelreihigen Zylindergruppe bestehenden Vortrockenpartie l, einer Streichpartie II und einer ebenfalls aus einer doppelreihigen Zylindergruppe bestehenden Nachtrockenpartie III. Die Vor- und Nachtockenpartie weisen eine übliche Bauart auf.A machine 1 for producing a cardboard web 2 is shown in the figure a pre-dryer section l consisting of a double-row cylinder group, one Coating section II and also from a double-row cylinder group existing after-dryer section III. The pre and post-curl section have one usual design.

Gemäß der Figur wird im Anschluß an die Vortrocknung l die zu behandelnde Bahn 2 von einer Abrolleinrichtung 3 kommend, über ein System von Leitwalzen 4, von denen in der Figur aus Übersichtlichkeitsgründen nur einige beziffert werden, zur Streichpartie II geleitet.According to the figure, following the predrying 1, the web 2 to be treated is coming from a rolling device 3, via a system of guide rollers 4, from which are only numbered in the figure for reasons of clarity, for String section II directed.

Die Streichpartie II besteht im gewählten Beispiel aus vier in der Hauptlaufrichtung bzw. Maschinenrichtung L hintereinander angeordneten Streichstationen 5, wobei zwei Stationen pro Bahnseite vorgesehen sind. Dabei sind die Stationen 5.1 und 5.3 für die Behandlung der Rückseite 2a der Kartonbahn 2 und die Stationen 5.2 und 5.4 dagegen für die Oberseite 2b (auch Topseite genannt) vorgesehen.The bowed section II consists of four in the selected direction in the main direction or machine direction L coating stations 5 arranged one behind the other, wherein two stations are provided on each side of the track. The stations 5.1 and 5.3 for the treatment of the back 2a of the cardboard web 2 and the stations 5.2 and 5.4 on the other hand, intended for the top side 2b (also called top side).

Die Streichstationen für jeweils eine Bahnseite, also Station 5.1 und 5.3 zur Behandlung der Bahnseite 2a sowie die Station 5.2 und 5.4 zur Behandlung der anderen Bahnseite 2b sind von gleicher Bauart, d. h. gleichen Types.The coating stations for one web side each, i.e. station 5.1 and 5.3 for Treatment of the web side 2a and the stations 5.2 and 5.4 for the treatment of the other web side 2b are of the same type, d. H. same type.

Man sieht aus der Figur, dass die Stationen 5.2 und 5.4 von der rechten Seite aus vom Bedienpersonal P überwachbar sind und die Stationen 5.2 und 5.4 von der linken Seite aus. Auf dieser Bedien - bzw. Überwachseite befindet sich auch das gewählte Auftragswerk A der Streichstation 5.It can be seen from the figure that the stations 5.2 and 5.4 from the right side can be monitored by the operating personnel P and the stations 5.2 and 5.4 by the left side. This is also located on this control or growth page selected work A of the coating station 5.

Im Beispiel sind alle Streichstationen zum direkten Auftragen des Mediums, wie Streichfarbe, Leim oder Stärke auf die Bahn 2 vorgesehen, wobei die Bahn 2 um eine Stütz- bzw. Gegenwalze W läuft. Der Auftrag des Mediums erfolgt vorzugsweise mit einem Düsenauftragswerk von unten her, so dass das Bedienpersonal P den Beschichtungsprozess gut überwachen kann. Mit einem nicht in der Figur erkennbarem Rakelelement kann das aufgetragene Medium auf das erforderliche Strichgewicht abgerakelt oder gewünschtenfalls nur vergleichmäßigt werden.In the example, all coating stations for direct application of the medium are like Coating paint, glue or starch provided on the web 2, the web 2 by one Support or counter roller W runs. The medium is preferably applied with a nozzle applicator from below, so that the operating personnel P the Can monitor the coating process well. With one not in the figure Recognizable doctor element can apply the applied medium to the required Streak weight doctored or, if desired, only evened out.

Im Beispiel weist die Kartonbahn 2 ein Flächengewicht von ca. 450 g/m2 auf.In the example, the cardboard web 2 has a weight per unit area of approximately 450 g / m 2 .

Ein ausreichend gutes Strichergebnis ist erreichbar, wenn:

  • zuerst auf die Oberseite 2b der Bahn 2 mittels Streichstation 5.2 Streichfarbe,
  • als zweiten Schritt auf die Rückseite 2a der Bahn 2 mittels Streichstation 5.1 ebenfalls Streichfarbe aufgetragen wird.
A sufficiently good stroke result can be achieved if:
  • first on top 2b of web 2 by means of coating station 5.2 coating color,
  • as a second step, coating color is also applied to the back 2 a of web 2 by means of coating station 5.1.

Eine weitere Variante ( eine solche ist in der Figur auch dargestellt) kann darin bestehen, dass die genannten Streichstationen 5.1 und 5.2 zum Vorstreichen verwendet werden. Ein Deckstrich erfolgt danach jeweils mit der Streichstation 5.3 für die Rückseite 2a und mit der Streichstation 5.4 für die Oberseite 2b.Another variant (such is also shown in the figure) can be included exist that the aforementioned coating stations 5.1 and 5.2 for pre-painting be used. A top coat is then carried out with the coating station 5.3 for the back 2a and with the coating station 5.4 for the top 2b.

In weiterer Variante bzw. je nach Bedarf, ist es auch möglich, mit der Station 5.3 - anstelle Streichfarbe - nur Stärke aufzutragen. Hierbei erfolgt kein Vorstrich mit der Station 5.1.
Diese Variante wird angewendet, um der Bahn beispielweise mehr Festigkeit zu verleihen bzw. ihrer Rollneigung entgegenzuwirken. In a further variant or as required, it is also possible to apply only starch with station 5.3 instead of coating color. There is no priming with station 5.1.
This variant is used to give the web more strength, for example, or to counteract its tendency to curl.

Die Bahn 2 läuft bei letzterer Variante von der Vortrockenpartie l kommend, direkt der Streichstation 5.2 zu, wie mit strichpunktierter Linie in der Figur gekennzeichnet ist. Soll aber ein Vorstrich ausgeführt werden, nimmt die Bahn den mit durchgehender Linie bezeichneten Weg zur Station 5.1.In the latter variant, web 2 runs from the pre-dryer section l, directly the Coating station 5.2, as indicated by a dash-dotted line in the figure. However, if a primer is to be carried out, the web takes the one with continuous Line marked route to station 5.1.

Genauso denkbar ist es, beispielsweise Station 5.2 auszulassen. In diesem Fall kann die Bahn 2 von I aus der Station 5.3 und/oder der Station 5.4 zugeführt werden, ohne dass der Laufweg, der die Bahn zur gewünschten Streichstation bringt, verändert werden muss.It is also conceivable to omit station 5.2, for example. In this case the web 2 of I from station 5.3 and / or station 5.4 are fed without that the path that brings the train to the desired coating station changes must become.

In diesem Zusammenhang ist es sehr wichtig, dass der Bahnlaufweg zu der betreffenden Streichstation in allen beschriebenen Varianten für die jeweilige Bahnseite die gleiche Richtung aufweist. Zum einen ist die Bahn 2 sowohl der Station 5.1 als auch der Station 5.3 in Vorwärtsrichtung (analog Laufrichtung L) und in horizontaler Weise zuführbar und zum anderen ist die Bahn den Stationen 5.2 und 5.4 ebenfalls wieder horizontal, aber hier ein nur kurzes Stück in Rückwärtsrichtung zuführbar.In this context, it is very important that the path to the relevant coating station in all variants described for the respective Web side has the same direction. For one, lane 2 is both the station 5.1 as well as station 5.3 in the forward direction (analog running direction L) and in can be fed horizontally and on the other hand, the web is the stations 5.2 and 5.4 also horizontal again, but here only a short distance in the reverse direction fed.

In jedem Fall ist die modulare, sehr kurze Bahnzüge gewährleistende Bauweise der Streichstationen sehr vorteilhaft.In any case, the modular, very short train design ensures the construction Coating stations very beneficial.

Aus allen Streichstationen 5, die sich allesamt auf dem Fundament 6 der Herstellungsmaschine befinden, wird die Bahn 2 nach oben zu Heißlufttrocknern, d.h. kontaktlosen Trocknungseinrichtungen zugeführt.From all coating stations 5, all of which are on the foundation 6 of the Manufacturing machine, the web 2 becomes hot air dryers, i.e. supplied to contactless drying devices.

Die kontaktlosen Trocknungseinrichtungen (das sind Einrichtungen 8 und 10) für die Trocknung der auf die jeweilige Bahnseite 2a oder 2b aufgetragenen Schicht sind ebenfalls von gleicher Bauart und befinden sich auf derselben, gemeinsamen Ebene 7, die parallel zum Fundament 6 und oberhalb der Streichstationen 5.1 bis 5.4 verläuft. The contactless drying devices (these are devices 8 and 10) for the Drying of the layer applied to the respective web side 2a or 2b are also of the same design and are on the same common level 7, which are parallel to the foundation 6 and above the coating stations 5.1 to 5.4 runs.

Damit besteht die Streichpartie nur aus zwei Hauptebenen, der Ebene 6 (Fundament), auf dem alle Streichstationen 5.1 bis 5.4 (und ggf. noch weitere) angeordnet sind und der Hauptebene 7 für alle kontaktlosen Trockner 8 und 10.The coating section therefore only consists of two main levels, level 6 (Foundation) on which all coating stations 5.1 to 5.4 (and possibly further) are arranged and the main level 7 for all contactless dryers 8 and 10.

Damit werden im Vergleich zu bekannten Einrichtungen weniger Stuhlungsteile S benötigt, wodurch die statische Belastung der Maschine geringer gehalten werden kann. Im Falle eines Bahnabrisses kann hier das Bedienpersonal P den Abtransport der in der Maschine verbleibenden Kartonreste einfacher als bisher entfernen.This means that fewer chair parts S required, which keeps the machine's static load lower can. In the event of a web break, the operating personnel P can remove it here remove the remaining cardboard in the machine more easily than before.

Aus der Figur ist des weiteren entnehmbar, dass der Streichstation 5.1 und auch der Streichstation 5.3 jeweils eine berührungslose Bahnumlenkeinrichtung 8 (das ist eine der oben genannten kontaktlosen Trocknungseinrung), ein sogenannter Airturn, nachgeordnet ist. Der Airturn trocknet gleichzeitig mit seinen Heißluftstrahlen das aufgetragene Streichmedium.From the figure it can also be seen that the coating station 5.1 and also the Coating station 5.3 each have a non-contact web deflection device 8 (this is a the above-mentioned contactless drying device), a so-called airturn, is subordinate. The Airturn dries that with its hot air jets at the same time applied coating medium.

Die mit der Einrichtung 8 nach unten umgelenkte Bahn wird einem gekühlten Zylinder 9 zugeführt, mit dem eine Abkühlung der Bahn auf ca. 50 °C möglich ist, bevor diese erneut auf der einen oder der anderen Bahnseite beschichtet wird.The web deflected downwards with the device 8 becomes a cooled cylinder 9 supplied, with which a cooling of the web to about 50 ° C is possible before this is coated again on one or the other side of the web.

Wie bereits erwähnt, sind auch den Streichstationen 5.2 und 5.4 kontaktlose Trockner nachgeordnet. Diese Trocknungseinrichtungen 10 sind hierbei im horizontalen Bahnverlauf über der Ebene 7 angeordnet.As already mentioned, the coating stations 5.2 and 5.4 are also contactless dryers downstream. These drying devices 10 are horizontal Pathway arranged above level 7.

Auch diesen Einrichtungen 10 (zumindest jener, der die Streichstation 5.2 nachgeordnet ist) folgt im Bahnlaufweg eine separate Zuggruppe in Form des gekühlten Zylinders 9.These devices 10 (at least the one that the coating station 5.2 a separate train group in the form of the cooled cylinder 9.

Damit die Trocknungsleistung innerhalb der Streichpartie II gesteigert werden kann, ist das Nachrüsten mit weiteren Heißlufttrocknern 10', wie in der Figur mit gestrichelten Linien gezeigt ist, vorteilhaft. Die Trockner 10' sind dabei im ablaufenden Bahnweg zwischen Trockner 10 und Kühlzylinder 9 angeordnet. So that the drying performance within the coating section II can be increased, is the retrofitting with further hot air dryers 10 ', as in the figure with dashed lines is shown, advantageous. The dryer 10 'are in the running path between dryer 10 and cooling cylinder 9 arranged.

Außerdem sind jeder Trocknungseinrichtung 8 und 10 sogenannte IR (Infrarot)-Trockner 11 vorgeschaltet.In addition, each drying device 8 and 10 are so-called IR (infrared) dryers 11 upstream.

Schließlich folgt der letzten Streichstation die Nachtrockenpartie III, die mit einem sogenannten nicht dargestellten Curlcontrol ausrüstbar ist.
Im Anschluss daran kann die Bahn aufgewickelt werden oder auch noch weiteren Behandlungsschritten zur Veredelung zugeführt werden.Finally, the last coating station is followed by the after-dryer section III, which can be equipped with a so-called curl control, not shown.
The web can then be wound up or further processing steps can be added for finishing.

Nachzutragen ist, dass als Auftragswerke A für die Behandlung von jeweils einer Bahnseite in Abhängigkeit von der Art der Bahn und dem Auftragsmedium beispielsweise sowohl Short- Dwell-Time- Aggregate (d.h. mit kurzer Einwirkzeit des Mediums, in der Fachsprache als SDTA bezeichnet), als auch Freistrahldüsen (vom Konzern der Anmelderin als JetFlow F vertrieben) infrage kommen können. Auch der Einsatz von als Schöpfwalze ausgebildeten Auftragswalzen , den sogannten Long Dwell Time- Aggregaten (mit langer Einwirkzeit, in der Fachsprache als LDTA bezeichnet) ist denkbar.
Aber auch das Auftragen in indirekter Weise wäre möglich. Hierbei würden die Aggregate A zunächst das Medium auf eine Auftragswalze aufbringen, welche das Medium danach auf die Bahnseite 2a oder 2b überträgt. It should be added that as order works A for the treatment of one web page depending on the type of web and the application medium, for example, both short dwell time aggregates (ie with a short exposure time of the medium, referred to in technical jargon as SDTA), as free jet nozzles (sold by the applicant's company as JetFlow F) can also be considered. It is also conceivable to use application rollers designed as a scoop roller, the so-called long dwell time units (with a long exposure time, referred to in technical jargon as LDTA).
But indirect application would also be possible. Here, the aggregates A would first apply the medium to an application roller, which then transfers the medium to the web side 2a or 2b.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Herstellungsmaschinemaking machine
22
Kartonbahnboard web
2a2a
Rückseiteback
2b2 B
Oberseitetop
33
Abrolleinrichtungunrolling
44
Leitwalzenguide rolls
55
Streichstationcoating station
5.15.1
Streichstation für RückseiteCoating station for the back
5.25.2
Streichstation für OberseiteCoating station for top
5.35.3
Streichstation für RückseiteCoating station for the back
5.45.4
Streichstation für OberseiteCoating station for top
66
Fundamentfoundation
77
Ebenelevel
88th
BahnumlenkeinrichtungBahnumlenkeinrichtung
99
Kühlzylindercooling cylinder
1010
Trockeneinrichtungdrying device
1 0'1 0 '
HeißlufttrocknerHot air dryer
1111
IR-TrocknerIR dryer
II
Vortrockenpartiepre-dryer
IIII
StreichpartieCoating section
llllll
NachtrockenpartieAfterdryers
AA
Auftragswerkcommissioned
PP
Bedienungspersonaloperator
WW
Gegenwalzebacking roll
SS
Stuhlungsteileframing parts

Claims (11)

Vorrichtung zur mehrfachen Auftragen eines flüssigen bis pastösen Mediums auf eine laufende, vorgetrocknete Faserstoffbahn, insbesondere Kartonbahn, innerhalb einer Maschine zur Herstellung der Faserstoffbahn, wobei wenigstens zwei, auf einem Fundament (6) der Herstellungsmaschine (1) befindliche Streichstationen (5) zum Beschichten jeder Bahnseite (2a,2b) vorgesehen sind und jeder Streichstation (5) wenigstens eine kontaktlose Trocknungseinrichtung (8,10) nachgeordnet ist,
dadurch gekennzeichnet, dass a) die Streichstationen (5) für die Beschichtung jeweils einer Bahnseite (2a,2b) von gleicher Bauart sind; b) der Bahnlaufweg zu den betreffenden Streichstationen (5) für die jeweilige Bahnseite (2a,2b) die gleiche Richtung aufweist; c) die kontaktlosen Trocknungseinrichtungen (8,10) für jeweils eine Bahnseite (2a,2b) gleich ausgebildet sind; d) die kontaktlosen Trocknungseinrichtungen (8,10) für beide Bahnseiten (2a,2b) sich auf der selben, gemeinsamen Ebene (7) befinden. Device for multiple application of a liquid to pasty medium on a running, pre-dried fibrous web, in particular cardboard web, within a machine for producing the fibrous web, at least two coating stations (5) on a foundation (6) of the manufacturing machine (1) for coating each Web side (2a, 2b) are provided and at least one contactless drying device (8, 10) is arranged after each coating station (5),
characterized in that a) the coating stations (5) for coating one web side (2a, 2b) are of the same type; b) the web path to the relevant coating stations (5) for the respective web side (2a, 2b) has the same direction; c) the contactless drying devices (8, 10) are designed identically for each web side (2a, 2b); d) the contactless drying devices (8, 10) for both web sides (2a, 2b) are on the same, common level (7). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass
in Maschinenlaufrichtung (L) zuerst eine Streichstation (5.1) für das Auftragen eines Vorstriches auf die Rückseite (2a) der Bahn (2), gefolgt von einer Streichstation (5.2) für das Auftragen des Vorstriches auf die Oberseite (2b) der Bahn (2) angeordnet ist, der sich eine Streichstation (5.3) für einen Deckstrich auf die Rückseite (2a) der Bahn (2) und danach eine Streichstation (5.4) für einen Deckstrich auf die Oberseite (2b) der Bahn anschließt, wobei die Streichstationen (5.1, 5.2, 5.3, 5.4) in der genannten Reihenfolge betreibbar sind. Device according to claim 1, characterized in that
in the machine direction (L) first a coating station (5.1) for applying a primer to the back (2a) of the web (2), followed by a coating station (5.2) for applying the primer to the top (2b) of the web (2 ) is arranged, which is followed by a coating station (5.3) for a top coat on the back (2a) of the web (2) and then a coating station (5.4) for a top coat on the top (2b) of the web, the coating stations (5.1 , 5.2, 5.3, 5.4) can be operated in the order mentioned. Vorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, dass
alle Streichstationen (5.1, 5.2, 5.3, 5.4) sich auf dem selben Fundament (6) befindenApparatus according to claim 1 and 2, characterized in that
all coating stations (5.1, 5.2, 5.3, 5.4) are on the same foundation (6) Vorrichtung nach Anspruch 1 bis 3, dadurch gekennzeichnet, dass
alle Streichstationen (5.1, 5.2, 5.3, 5.4)) zum direkten Beschichten der Faserstoffbahn (2 ) ausgebildet sind.Apparatus according to claim 1 to 3, characterized in that
all coating stations (5.1, 5.2, 5.3, 5.4)) are designed for direct coating of the fibrous web (2). Vorrichtung nach einem oder mehren der vorangehenden Ansprüche, dadurch gekennzeichnet, dass
die Streichstationen (5.2, 5.4) für die Oberseite (2b) der Faserstoffbahn (2) zum Auftrag von Streichfarbe mit einem Feststoffgehalt von ca. 60 % vorgesehen sind.Device according to one or more of the preceding claims, characterized in that
the coating stations (5.2, 5.4) for the top side (2b) of the fibrous web (2) are provided for the application of coating color with a solids content of approx. 60%. Vorrichtung nach einem oder mehren der vorangehenden Ansprüche, dadurch gekennzeichnet, dass
die Streichstationen (5.1, 5.3) für die Unterseite (2a) der Faserstoffbahn (2) zum Auftrag von Streichfarbe oder zum Auftrag von Stärke vorgesehen sind.Device according to one or more of the preceding claims, characterized in that
the coating stations (5.1, 5.3) are provided for the underside (2a) of the fibrous web (2) for the application of coating color or for the application of starch. Vorrichtung nach einem oder mehren der vorangehenden Ansprüche, dadurch gekennzeichnet, dass
den Streichstationen (5.2, 5.4) für die Oberseite (2b) der Faserstoffbahn (2) jeweils ein IR-Trockner (11) nachgeordnet ist, dem jeweils ein Heißlufttrockner (10) und erforderlichenfalls ein weiterer Heißlufttrockner (10') folgt.Device according to one or more of the preceding claims, characterized in that
The coating stations (5.2, 5.4) for the top (2b) of the fibrous web (2) are each followed by an IR dryer (11), which is followed by a hot air dryer (10) and, if necessary, another hot air dryer (10 '). Vorrichtung nach einem oder mehren der vorangehenden Ansprüche, dadurch gekennzeichnet, dass
den Streichstationen (5.1, 5.3) für die Unterseite (2a) der Faserstoffbahn (2) jeweils ein IR-Trockner (11) nachgeordnet ist, dem jeweils eine kontaktlose Bahnumlenkeinrichtung (Airturn) (8) folgt. Device according to one or more of the preceding claims, characterized in that
The coating stations (5.1, 5.3) for the underside (2a) of the fibrous web (2) are each followed by an IR dryer (11), which is followed by a contactless web deflector (air turn) (8). Vorrichtung nach einem oder mehreren der vorangehenden Ansprüche,
dadurch gekennzeichnet, dass
jeder kontaktlosen Trocknungseinrichtung (8, 10) eine separate Zuggruppe in Form eines gekühlten Zylinders (9) nachgeordnet ist.Device according to one or more of the preceding claims,
characterized in that
each contactless drying device (8, 10) is followed by a separate train group in the form of a cooled cylinder (9). Vorrichtung nach einem oder mehreren der vorangehenden Ansprüche,
dadurch gekennzeichnet, dass
die beidseitig zu beschichtende Faserstoffbahn (2) in annähernd horizontaler Lage den jeweiligen Streichstationen (5.1, 5.2, 5.3, 5.4) zuführbar ist.Device according to one or more of the preceding claims,
characterized in that
the fibrous web (2) to be coated on both sides can be fed to the respective coating stations (5.1, 5.2, 5.3, 5.4) in an approximately horizontal position. Vorrichtung nach einem oder mehren der vorangehenden Ansprüche,
dadurch gekennzeichnet, dass
der letzten Streichstation (5.4) eine Nachtrockenpartie (III) mit einem an sich bekannten Curlcontrol folgt.Device according to one or more of the preceding claims,
characterized in that
the last coating station (5.4) is followed by a drying section (III) with a curl control known per se.
EP03100674A 2002-03-22 2003-03-18 Coating apparatus Expired - Lifetime EP1348809B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10212818 2002-03-22
DE10212818A DE10212818A1 (en) 2002-03-22 2002-03-22 applicator

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EP1348809B1 EP1348809B1 (en) 2007-02-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (3)

Country Link
EP (1) EP1348809B1 (en)
AT (1) ATE355413T1 (en)
DE (2) DE10212818A1 (en)

Cited By (2)

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WO2005028751A1 (en) * 2003-09-22 2005-03-31 Metso Paper, Inc. Method for producing surface sized paper or cardboard web
EP1559834A1 (en) * 2004-01-28 2005-08-03 Voith Paper Patent GmbH Coating process

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
FI121479B (en) * 2008-02-29 2010-11-30 Metso Paper Inc Method and apparatus for making paper coated with multiple coating layers
DE102017125629B4 (en) 2017-11-02 2023-10-05 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Disc brake for a commercial vehicle

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EP0643167A1 (en) * 1993-08-07 1995-03-15 J.M. Voith GmbH Device for coating a paper web
DE4416399A1 (en) * 1994-05-09 1995-11-16 Voith Gmbh J M Assembly for liquid coating on both sides of a moving web
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EP0643167A1 (en) * 1993-08-07 1995-03-15 J.M. Voith GmbH Device for coating a paper web
DE4416399A1 (en) * 1994-05-09 1995-11-16 Voith Gmbh J M Assembly for liquid coating on both sides of a moving web
DE4420242A1 (en) * 1994-06-10 1995-01-05 Voith Gmbh J M Equipment for the alternative treatment of a running web
WO1998032921A1 (en) * 1997-01-27 1998-07-30 Valmet Corporation Paper coating apparatus and method for coating paper
DE19954083A1 (en) * 1999-11-10 2001-05-17 Voith Paper Patent Gmbh Coating of a web surface directly or indirectly on one or both sides is applied while the web is still wet to prevent the escape of matter from the paper/cardboard into the water recirculation system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005028751A1 (en) * 2003-09-22 2005-03-31 Metso Paper, Inc. Method for producing surface sized paper or cardboard web
EP1559834A1 (en) * 2004-01-28 2005-08-03 Voith Paper Patent GmbH Coating process

Also Published As

Publication number Publication date
EP1348809B1 (en) 2007-02-28
ATE355413T1 (en) 2006-03-15
DE10212818A1 (en) 2003-10-02
DE50306623D1 (en) 2007-04-12

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