EP0352582B2 - Process for coating running webs of paper or board - Google Patents

Process for coating running webs of paper or board Download PDF

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Publication number
EP0352582B2
EP0352582B2 EP89113032A EP89113032A EP0352582B2 EP 0352582 B2 EP0352582 B2 EP 0352582B2 EP 89113032 A EP89113032 A EP 89113032A EP 89113032 A EP89113032 A EP 89113032A EP 0352582 B2 EP0352582 B2 EP 0352582B2
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EP
European Patent Office
Prior art keywords
roll
coating
paper
blade
web
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EP89113032A
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German (de)
French (fr)
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EP0352582B1 (en
EP0352582A2 (en
EP0352582A3 (en
Inventor
Hans-Peter Dr. Sollinger
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JM Voith GmbH
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JM Voith GmbH
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Priority to AT89113032T priority Critical patent/ATE87677T1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/083—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets being passed between the coating roller and one or more backing rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/06—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying two different liquids or other fluent materials, or the same liquid or other fluent material twice, to the same side of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/40—Distributing applied liquids or other fluent materials by members moving relatively to surface
    • 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
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56—Rolls
    • D21H23/58—Details thereof, e.g. surface characteristics, peripheral speed
    • D21H23/60—Details thereof, e.g. surface characteristics, peripheral speed the material on the applicator roll being subjected to a particular treatment before applying to the paper
    • 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

Definitions

  • the invention relates to an application device according to the preamble of the claim 1 and corresponding procedure.
  • the Process for coating running webs with the two successive coating processes, being the first applied Layer is still damp when the second layer is known from US 3,202,536.
  • the two coating stations are both here on a single roller guiding the web arranged as well as on two successive Rollers.
  • One of the latter corresponding
  • the facility is also known from CA 882 640 the latter differs from the other in that in the first coating station the application takes place by means of an application roller.
  • This first applied layer is then by means of Spreading blade smoothed out, taking the excess is scraped off.
  • At the other facility takes place in the first coating station also scraping using a doctor blade.
  • the object of the invention is a reliable Wet-on-wet coating process with the best Line quality and economical material consumption create.
  • a new coating device according to the characterizing part of the claim 1 created.
  • the coating initially in small Dimensions are applied to the web, being through the nip between the first Web guide roller and the press roller a uniform Press in the first coating amount he follows. So the web is practically impregnated, and it is easily possible, evenly the top layer with the second coating device to apply. None comes through the press nip high stress, especially tensile or Pinch stress on the web. The easily at the stage where there is web contact can come tending to compress the web or even scraper blade causing web breaks is avoided there. It is very advantageous for the even application of a dosed Amount to use a squeegee, its scope is grooved. These grooves can be very be fine, so that a special uniform order results.
  • FIG 1 is the first web guide roller, so that of the first coating device with 1, the associated press roll with 2 and the web guide roll the second coating device with 3 designated.
  • the path is indicated by W.
  • the first coating device has an application chamber 4 for the coating composition, in which this introduced through the feed pipe 5 becomes.
  • the application chamber is included as a nozzle chamber formed an overflow so that excess Coating compound in the sump 7, the the application chamber 4 is attached, overflow can.
  • the application chamber 4 is supported by a support beam 6 held.
  • Am in the direction of rotation of the web guide roller 1 exit end of the order chamber 4 is the dosing element, one Roller doctor blade 8, preferably one with circumferential grooves provided surface.
  • Application chamber 13 with feed tube 14 is provided.
  • the second application layer smoothes.
  • the press nip formed is dosed in a relatively precise manner Amount of coating mass in the web, preferably a paper or cardboard web pressed in and impregnated with it. Without further drying, the material web then becomes W fed to the second coating device. It can be passed over an spreader roller 18 to avoid wrinkles.
  • the doctor blade 12 will of course be in everyone Case in a known manner by the pressing means pressed that they are evenly on the web guide roller 3 or the monitor lane and the Coating smoothens very evenly.
  • the commissioned works with the commission chamber are known e.g. from US 4,250,211 and application squeegee with swamp and squeegee including holder US 2,970,564.
  • a squeegee with the circumferential grooves forming wire wrap is provided e.g. known from US 3,387,585.
  • a variant is shown in dashed lines in FIG. 1, in which the web guide rollers 1 and 3 are arranged directly next to each other. By doing Gap formed between the two rollers is, the path runs relatively smoothly, at least without major contact forces.
  • a pressure in the nip between roller 1 and 3 is not possible due to web elongation and transverse stretching between the nip of roller 1 and 3 and the blade 12 can not be compensated.
  • the basic principle of the application device according to the invention is to carry out the first coating only to such an extent that essentially only the paper is impregnated. Therefore, the amount of the coating slip applied in the first application device depends on the absorbency of the paper, which among other things is essentially a function of the basis weight of the paper. For example, basis weights of more than 80 g / m 2 are used for wood-free paper types. In the case of these papers, which are also equipped with greater absorbency because of their greater porosity, the basis weight applied in the first coating device is a maximum of about 7 g / m 2 , so that a total of 15 g / m 2 layering is applied in both coating devices.
  • the corresponding groove size is a maximum of about 0.012 mm 2 in cross section. This applies essentially to those squeegees with wire wrapping. However, these squeegees do not have a very long service life.
  • doctor blades are for the invention Order facility has been developed that it allow a flawless stroke over longer Establish operating periods.
  • a squeegee is outlined in Figure 2, with between the Grooves 20 are webs 21, which are in cross section parallel to the central axis of the roll doctor rod seen, a surface parallel to this central axis exhibit.
  • the value per meter working width of the doctor blade rod of a maximum of 34 mm 2 can be regarded as the upper limit.
  • the cross section of the grooves of a roller doctor rod provided with wire wrapping is a maximum of approximately 0.006 mm 2 in order to apply an application layer of 3 g / m 2 by means of the first coating device.
  • the total order is then about 10 g / m 2 .
  • the total cross-sectional area for the doctor blade according to FIG. 2 is then a maximum of 24 mm 2 per meter of working width.

Landscapes

  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paper (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

The coating device features a first applicator which, to begin with, forces coating substance applied on the shell of a web roll (1), in a press gap formed between said roll and a press roll (2), into the web (W), thereby impregnating it. This makes it possible to apply with maximum uniformity and without web breaks and wrinkles, immediately successively, a second coating layer during the still wet condition of the first layer where, naturally, again a web guide roll (3) is provided.

Description

Die Erfindung betrifft eine Auftragseinrichtung entsprechend dem Oberbegriff des Patentanspruchs 1 sowie entsprechendes Verfahren. Das Verfahren zur Beschichtung laufender Warenbahnen mit den zwei aufeinander folgenden Beschichtungsvorgängen, wobei die zuerst aufgetragene Schicht noch feucht ist, wenn die zweite Schicht aufgetragen wird, ist bekannt aus US 3,202,536. Die beiden Beschichtungsstationen sind hier sowohl an einer einzigen die Bahn führenden Walze angeordnet als auch an zwei aufeinander folgenden Walzen. Eine der letztgenannten entsprechende Einrichtung ist auch bekannt aus CA 882 640. Die letztgenannte unterscheidet sich von der anderen dadurch, daß in der ersten Beschichtungsstation der Auftrag mittels Auftragswalze erfolgt. Diese zuerst aufgetragene Schicht wird dann mittels Streichklinge vergleichmäßigt, wobei der Überschuß abgeschabt wird. Bei der anderen Einrichtung erfolgt in der ersten Beschichtungsstation ebenfalls ein Abschaben mittels einer Schaberklinge.The invention relates to an application device according to the preamble of the claim 1 and corresponding procedure. The Process for coating running webs with the two successive coating processes, being the first applied Layer is still damp when the second layer is known from US 3,202,536. The two coating stations are both here on a single roller guiding the web arranged as well as on two successive Rollers. One of the latter corresponding The facility is also known from CA 882 640 the latter differs from the other in that in the first coating station the application takes place by means of an application roller. This first applied layer is then by means of Spreading blade smoothed out, taking the excess is scraped off. At the other facility takes place in the first coating station also scraping using a doctor blade.

Die Aufgabe der Erfindung ist ein betriebssicheres Naß- in Naß-Streichverfahren mit bester Strichqualität und sparsamem Materialverbrauch zu schaffen.The object of the invention is a reliable Wet-on-wet coating process with the best Line quality and economical material consumption create.

Gemäß der Erfindung wird eine neue Beschichtungseinrichtung gemäß dem Kennzeichen des Patentanspruchs 1 geschaffen. Hierbei ist als Vorteil zu nennen, daß die Beschichtung zunächst in geringem Maße auf die Warenbahn aufgetragen wird, wobei durch den Preßspalt zwischen der ersten Bahnführungswalze und der Preßwalze ein gleichmäßiges Einpressen der ersten Beschichtungsmenge erfolgt. Dadurch wird die Bahn quasi imprägniert, und es ist ohne weiteres möglich, gleichmäßig die Deckschicht mit der zweiten Beschichtungseinrichtung aufzutragen. Durch den Preßnip tritt keine große Beanspruchung, insbesondere Zug- oder Quetschbeanspruchung der Warenbahn auf. Die leicht in dem Stadium, wo es zu Bahnberührungen kommen kann, zum Verpressen der Bahn neigende oder sogar Bahnrisse herbeiführende Schaberklinge ist dort vermieden. Sehr vorteilhaft ist es, zwecks gleichmäßigem Auftrag einer dosierten Menge eine Rollrakel zu verwenden, deren Umfang mit Rillen versehen ist. Diese Rillen können sehr fein ausgebildet sein, so daß sich ein besonders gleichmäßiger Auftrag ergibt.According to the invention, a new coating device according to the characterizing part of the claim 1 created. Here is an advantage to mention that the coating initially in small Dimensions are applied to the web, being through the nip between the first Web guide roller and the press roller a uniform Press in the first coating amount he follows. So the web is practically impregnated, and it is easily possible, evenly the top layer with the second coating device to apply. None comes through the press nip high stress, especially tensile or Pinch stress on the web. The easily at the stage where there is web contact can come tending to compress the web or even scraper blade causing web breaks is avoided there. It is very advantageous for the even application of a dosed Amount to use a squeegee, its scope is grooved. These grooves can be very be fine, so that a special uniform order results.

Nachfolgend wird die Erfindung anhand dreier in den Figuren der Zeichnung dargestellter Beispiele erläutert.In the following, the invention is based on three examples shown in the figures of the drawing explained.

In Figur 1 ist die erste Bahnführungswalze, also die der ersten Beschichtungseinrichtung mit 1, die zugehörige Preßwalze mit 2 und die Bahnführungswalze der zweiten Beschichtungseinrichtung mit 3 bezeichnet. Die Bahnführung ist mit W angegeben. Die erste Beschichtungseinrichtung weist eine Auftragskammer 4 für die Beschichtungsmasse auf, in welche diese durch das Zuführrohr 5 eingeleitet wird. Die Auftragskammer ist als Düsenkammer mit einem Überlauf ausgebildet, so daß überschüssige Beschichtungsmasse in die Auffangwanne 7, die an der Auftragskammer 4 befestigt ist, überfließen kann. Die Auftragskammer 4 wird von einem Tragbalken 6 gehalten. Am in Drehrichtung der Bahnführungswalze 1 austrittsseiten Ende der Auftragskammer 4 befindet sich das Dosierelement, eine Rollrakel 8, die vorzugsweise eine mit Umfangsrillen versehene Oberfläche aufweist. Als zweite Beschichtungseinrichtung ist ebenfalls eine derartige Auftragskammer 13 mit Zuführrohr 14 vorgesehen. Es ist ebenfalls eine Auffangrinne 16 und ein Tragbalken 15 vorhanden. Anstelle der Rollrakel 8 ist hier aber eine Streichklinge 12 austrittsseitig in bezug auf die Auftragskammer 13 vorgesehen, die die zweite Auftragsschicht glättet. In dem zwischen der Bahnführungswalze 1 und der Preßwalze 2 gebildeten Preßspalt wird die in relativ genau dosierter Menge an Beschichtungsmasse in die Warenbahn, vorzugsweise eine Papier- oder Kartonbahn hineingepreßt und diese damit imprägniert. Ohne weitere Trocknung wird dann die Warenbahn W der zweiten Beschichtungseinrichtung zugeführt. Dabei kann sie über eine Breitstreckwalze 18 geleitet werden, um Faltenbildungen zu vermeiden.In Figure 1 is the first web guide roller, so that of the first coating device with 1, the associated press roll with 2 and the web guide roll the second coating device with 3 designated. The path is indicated by W. The first coating device has an application chamber 4 for the coating composition, in which this introduced through the feed pipe 5 becomes. The application chamber is included as a nozzle chamber formed an overflow so that excess Coating compound in the sump 7, the the application chamber 4 is attached, overflow can. The application chamber 4 is supported by a support beam 6 held. Am in the direction of rotation of the web guide roller 1 exit end of the order chamber 4 is the dosing element, one Roller doctor blade 8, preferably one with circumferential grooves provided surface. As a second coating device is also one of them Application chamber 13 with feed tube 14 is provided. It is also a gutter 16 and a support beam 15 available. Instead of the doctor blade 8 is but here is a doctor blade 12 on the exit side provided with respect to the order chamber 13, the the second application layer smoothes. In the between the web guide roller 1 and the press roller 2 The press nip formed is dosed in a relatively precise manner Amount of coating mass in the web, preferably a paper or cardboard web pressed in and impregnated with it. Without further drying, the material web then becomes W fed to the second coating device. It can be passed over an spreader roller 18 to avoid wrinkles.

Die Streichklinge 12 wird natürlich in jedem Fall in bekannter Weise durch die Anpreßmittel so angedrückt, daß sie gleichmäßig an der Bahnführungswalze 3 bzw. der Waranbahn anliegt und die Beschichtung sehr gleichmäßig glättet.The doctor blade 12 will of course be in everyone Case in a known manner by the pressing means pressed that they are evenly on the web guide roller 3 or the monitor lane and the Coating smoothens very evenly.

Die Auftragswerke mit Auftragskammer sind bekannt z.B. aus US 4,250,211 und Auftragsrakel mit Sumpf und Rollrakel einschließlich Halter aus US 2,970,564. Eine Rollrakel, die mit die Umfangsrillen bildender Drahtumwicklung versehen ist, ist z.B. bekannt aus US 3,387,585.The commissioned works with the commission chamber are known e.g. from US 4,250,211 and application squeegee with swamp and squeegee including holder US 2,970,564. A squeegee with the circumferential grooves forming wire wrap is provided e.g. known from US 3,387,585.

Man kann durch eine zwischen den beiden Bahnführungswalzen 1 und 3 eingeschaltete Breitstreckwalze 18 den Bahnverlauf und die Bahnbeanspruchung durch Bahnzug noch wesentlich vergleichmäßigen.You can see one between the two Web guide rollers 1 and 3 activated spreader roller 18 the course of the path and the stress on the path even more even by train.

In Figur 1 ist gestrichelt eine Variante dargestellt, bei welcher die Bahnführungswalzen 1 und 3 unmittelbar nebeneinander angeordnet sind. In dem Spalt, der zwischen den beiden Walzen gebildet ist, verläuft die Bahn relativ reibungsfrei, jedenfalls ohne größere Anpreßkräfte.A variant is shown in dashed lines in FIG. 1, in which the web guide rollers 1 and 3 are arranged directly next to each other. By doing Gap formed between the two rollers is, the path runs relatively smoothly, at least without major contact forces.

Eine Anpressung im Nip zwischen Walze 1 und 3 ist nicht möglich, da Bahnlängung und Querdehnung zwischen dem Nip von Walze 1 und 3 und der Klinge 12 nicht ausgeglichen werden können.A pressure in the nip between roller 1 and 3 is not possible due to web elongation and transverse stretching between the nip of roller 1 and 3 and the blade 12 can not be compensated.

Das Grundprinzip der erfindungsgemäßen Auftragseinrichtung ist es, die erste Beschichtung nur in einem solchen Maße vorzunehmen, daß im wesentlichen nur eine Imprägnierung des Papiers erfolgt. Daher hängt die Menge der in der ersten Auftragseinrichtung aufgetragenen Streichmasse von der Saugfähigkeit des Papiers ab, welche u.a. im wesentlichen eine Funktion des Flächengewichts des Papiers ist. So werden z.B. für holzfreie Papiersorten Flächengewichte von mehr als 80 g/m2 verwendet. Bei diesen wegen ihrer größeren Porosität auch mit größerer Saugfähigkeit ausgestatteten Papieren beträgt das in der ersten Beschichtungseinrichtung aufgetragene Flächengewicht maximal etwa 7 g/m2, so daß insgesamt eine Schichtungsmenge von 15 g/m2 in beiden Beschichtungseinrichtungen aufgetragen wird. Die entsprechende Rillengröße beträgt dabei im Querschnitt maximal etwa 0,012 mm2. Dies gilt im wesentlichen für solche Rollrakel, die mit Drahtumwicklung versehen sind. Diese Rollrakel haben aber keine sehr große Standzeit.The basic principle of the application device according to the invention is to carry out the first coating only to such an extent that essentially only the paper is impregnated. Therefore, the amount of the coating slip applied in the first application device depends on the absorbency of the paper, which among other things is essentially a function of the basis weight of the paper. For example, basis weights of more than 80 g / m 2 are used for wood-free paper types. In the case of these papers, which are also equipped with greater absorbency because of their greater porosity, the basis weight applied in the first coating device is a maximum of about 7 g / m 2 , so that a total of 15 g / m 2 layering is applied in both coating devices. The corresponding groove size is a maximum of about 0.012 mm 2 in cross section. This applies essentially to those squeegees with wire wrapping. However, these squeegees do not have a very long service life.

Daher sind Rollrakelstäbe für die erfindungsgemäße Auftragseinrichtung entwickelt worden, die es ermöglichen, ein einwandfreien Strich über längere Betriebszeiträume herzustellen. Eine solche Rollrakel ist in Figur 2 skizziert, wobei zwischen den Rillen 20 sich Stege 21 befinden, die im Querschnitt parallel zur Mittelachse des Rollrakelstabes gesehen, eine zu dieser Mittelachse parallele Oberfläche aufweisen.Therefore, doctor blades are for the invention Order facility has been developed that it allow a flawless stroke over longer Establish operating periods. Such a squeegee is outlined in Figure 2, with between the Grooves 20 are webs 21, which are in cross section parallel to the central axis of the roll doctor rod seen, a surface parallel to this central axis exhibit.

Für den Querschnitt dieser Rillen kann etwa der Wert je Meter Arbeitsbreite des Rollrakelstabes von maximal 34 mm2 als obere Grenze angesehen werden.For the cross-section of these grooves, the value per meter working width of the doctor blade rod of a maximum of 34 mm 2 can be regarded as the upper limit.

Bei Papieren minderwertigerer Qualität, also mit einem Flächengewicht von weniger als 80 g/m2 beträgt der Querschnitt der Rillen eines mit Drahtumwicklung versehenen Rollrakelstabes maximal etwa 0,006 mm2, um eine Auftragsschicht von 3 g/m2 mittels der ersten Beschichtungseinrichtung aufzutragen. Der Gesamtauftrag beträgt dann etwa 10 g/m2.In the case of papers of inferior quality, that is to say with a weight per unit area of less than 80 g / m 2 , the cross section of the grooves of a roller doctor rod provided with wire wrapping is a maximum of approximately 0.006 mm 2 in order to apply an application layer of 3 g / m 2 by means of the first coating device. The total order is then about 10 g / m 2 .

Die Gesamtquerschnittsfläche für Rollrakel nach Figur 2 beträgt dann je Meter Arbeitsbreite maximal 24 mm2.The total cross-sectional area for the doctor blade according to FIG. 2 is then a maximum of 24 mm 2 per meter of working width.

Auf diese Weise wird mittels der ersten Beschichtungseinrichtung eine so dünne Schicht aufgetragen, daß mittels der Preßwalze 2 praktisch eine Imprägnierung dieser dünnen Auftragsschicht des Papiers erfolgt. Dann kann ohne weiteres mit der zweiten Beschichtungseinrichtung, die an der zweiten Walze 3 angeordnet ist, der vollständige, endgültige Schichtauftrag erfolgen. Es hat sich gezeigt, daß auf diese Weise eine sehr hohe Strichqualität erreichbar ist.In this way, by means of the first coating device applied such a thin layer that practically by means of the press roll 2 an impregnation of this thin application layer of the paper. Then you can easily with the second coating device, which on the second roller 3 is arranged, the complete, final layer application. It has shown, that in this way a very high stroke quality is achievable.

Es hat sich somit gezeigt, daß die erfindungsgemäße Einrichtung sehr viel effektiver arbeitet, als die eingangs genannte gemäß US-PS 32 02 536. Der Gedanke bei jener Einrichtung war es, eine sehr hohe Konsistenz der ersten Beschichtung zu verwenden, damit die Eindringtiefe des Lösungsmittels nicht so groß ist. Der Nachteil bei jener Einrichtung war aber, daß die erste Besichichtung doch relativ dick aufgetragen wurde, wobei es schwierig ist, diese erste Schicht mit einer Streichklinge genügend zu glätten. Erfindungsgemäß erfolgt auch das Auftragen beider Beschichtungen mittels eines Auftragswerkes, das eine unter Druck stehende Auftragskammer aufweist. Auch diese scheint für ein sehr gutes Streichergebnis beizutragen. Die Anordnung gemäß der CA-PS 882 640 scheint noch schlechter im Ergebnis zu sein als die Anordung gemäß der genannten US-Patentschrift.It has thus been shown that the invention Establishment works much more effectively than the initially mentioned according to US-PS 32 02 536. The thought of that facility was one very high consistency of the first coating too use so that the penetration depth of the solvent is not that big. The disadvantage with that But the facility was that the first inspection was applied relatively thick, whereby it difficult is this first layer with a doctor blade enough to smooth out. According to the invention also the application of both coatings by means of a commissioned work, one under pressure standing order chamber. This too seems to contribute to a very good streak result. The arrangement according to CA-PS 882 640 seems to be even worse in the result than that Arrangement according to the aforementioned US patent.

Bei der Anordnung gemäß Figur 3 ist eine andere Auftragseinrichtung der Bahnführungswalze 1 zugeordnet, an welcher ein zusammen mit dem Tragbalken 9 den Sumpf aus Beschichtungsmasse bildender Halter 11 für die Rollrakel 10 vorgesehen ist. Da es sich um einen offenen Sumpf handelt, ist hier die nötige Pumpenleistung geringer als im Fall von Figur 1.In the arrangement according to FIG. 3 there is one other application device of the web guide roller 1 assigned to which a together with the Support beam 9 the sump from coating material forming holder 11 is provided for the doctor blade 10 is. Since it is an open swamp, is here the required pump output is lower than in the case of Figure 1.

Claims (5)

  1. A process for coating running webs of paper or board, in which two immediately successive layers are laid on top of each other, while the first layer is still wet, and at least one rotating, web guide roll and a coating unit assigned to each roll are provided both for the first and also for the second coating operation and the second coating unit comprises a smoothing blade, characterised in that firstly the coating compound for the first layer is applied from the first coating unit in a metered quantity to the shell of the first roll, and then the applied quantity is pressed into the paper or board web through a press roll (2) forming a press nip with the first roll (1) to achieve an impregnation of said web of paper or board, with the maximum grammage of this first layer amounting to 7/gm2, and with the applied quantity being measured in such a manner that it maximally corresponds to the absorption capacity of the paper.
  2. A unit for the implementation of the process, in which two immediately successive layers are laid on top of each other, while the first layer is still wet, and at least one rotating, web guide roll (1, 3) and a coating unit (4-8; 12-16) assigned to each roll are provided both for the first as well as the second coating operation,
    characterised in that the first coating unit has a press nip which is formed by the first (1) and another roll (2),
    in that assigned to the first roll (1), is an application station (4), preferably a nozzle applicator, with a metering blade (8) which is provoided with peripheral grooves and is positioned as a metering unit at the discharge end of the nozzle applicator (4),
    and in that the peripheral grooves have a maximum cross section of 0.012 mm2 per groove when viewed in an axial section through the blade (8), with the chamber of the application station which contains the coating slip being limited at the roll (1) by the metering blade (8) and its holder (11) respectively.
  3. A unit according to Claim 2,
    characterised in that the peripheral grooves each have a maximum cross section of 0.012 mm2 for paper grades with a grammage of over 80 g/m2 and a maximum cross section of 0.006 mm2 for paper grades with a maximum grammage of 80 g/m2.
  4. A unit for the implementation of the process,
    characterised in that the first coating unit has a press nip which is formed from the first (1) and another roll (2),
    in that a nozzle applicator (4) is assigned to the first roll (1), with a metering blade (8) which is provided with peripheral grooves and is positioned as a metering element at the discharge end of the nozzle applicator (4),
    and in that the peripheral grooves have a total maximum cross section per meter operating width of the metering blade (8) of 34 mm2 when viewed in an axial section through the blade (8).
  5. A unit according to one of Claims 2 to 4,
    characterised in that the metering blade is provided with peripheral grooves (20), and the webs (21) between them comprise a surface which, when viewed approximately in the direction of the center axis of the metering blade rod (8), is parallel to said axis, with the width of these surfaces, when viewed from this centre axis direction, amounting to the maximum width of the cross section of the peripheral grooves (20) at most.
EP89113032A 1988-07-27 1989-07-15 Process for coating running webs of paper or board Expired - Lifetime EP0352582B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89113032T ATE87677T1 (en) 1988-07-27 1989-07-15 APPLICATION EQUIPMENT FOR COATING RUNNING WEBS AND COATING PROCESSES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3825412 1988-07-27
DE3825412 1988-07-27

Publications (4)

Publication Number Publication Date
EP0352582A2 EP0352582A2 (en) 1990-01-31
EP0352582A3 EP0352582A3 (en) 1991-06-12
EP0352582B1 EP0352582B1 (en) 1993-03-31
EP0352582B2 true EP0352582B2 (en) 1999-02-24

Family

ID=6359608

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19890110962 Withdrawn EP0352465A3 (en) 1988-07-27 1989-06-16 Application device for coating moving webs, and coating process
EP89113032A Expired - Lifetime EP0352582B2 (en) 1988-07-27 1989-07-15 Process for coating running webs of paper or board

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19890110962 Withdrawn EP0352465A3 (en) 1988-07-27 1989-06-16 Application device for coating moving webs, and coating process

Country Status (9)

Country Link
US (3) US4980207A (en)
EP (2) EP0352465A3 (en)
JP (1) JP2524641B2 (en)
AT (1) ATE87677T1 (en)
CA (1) CA1336374C (en)
DE (2) DE3922535C3 (en)
ES (1) ES2039766T3 (en)
FI (1) FI94274C (en)
NO (1) NO176008C (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0352465A3 (en) * 1988-07-27 1990-10-10 J.M. Voith GmbH Application device for coating moving webs, and coating process
DE4002256A1 (en) * 1990-01-26 1991-08-01 Voith Gmbh J M Cardboard web coating - has grooved roller spreader and web guide roller to give thin in layer of coating mass
US5340611A (en) * 1989-07-25 1994-08-23 J. M. Voith Gmbh Process for coating travelling webs
DE4014647C2 (en) * 1990-05-08 1995-03-30 Voith Gmbh J M Device for applying a coating to a running web
FI86318C (en) * 1990-06-26 1992-08-10 Keskuslaboratorio Method and apparatus for regulating leaf coating
DE4120141C2 (en) * 1991-06-19 1995-06-08 Voith Gmbh J M Doctor blade
DE4211401A1 (en) * 1992-04-04 1993-10-07 Voith Gmbh J M Coating device for webs of paper or cardboard
FI93665C (en) * 1992-11-13 1995-05-10 Valmet Paper Machinery Inc Method and apparatus for coating a paper web
AU6430494A (en) * 1993-04-06 1994-10-24 Veitsiluoto Oy A method of coating paper and an apparatus therefor
DE4340039C2 (en) * 1993-11-24 1997-08-21 Voith Gmbh J M Coating device for running webs of paper or cardboard
DE4414949A1 (en) * 1994-04-28 1995-11-02 Voith Gmbh J M Device for applying at least one liquid medium to a running web of material
FI95947C (en) * 1994-06-29 1996-04-10 Valmet Paper Machinery Inc Method and arrangement for coating a moving paper web
FI109216B (en) 1996-03-06 2002-06-14 Metso Paper Inc Method and apparatus for coating a running web
DE29610395U1 (en) * 1996-06-13 1996-08-22 Voith Sulzer Papiermasch Gmbh Device for the sequential application of two layers of liquid or pasty media on one side of a running material web
DE19623622A1 (en) * 1996-06-13 1997-12-18 Voith Sulzer Papiermasch Gmbh Method and device for coating a running material web
US5776546A (en) * 1996-06-26 1998-07-07 Miply Equipment, Inc. Method and apparatus for impregnating a porous substrate with a solids-bearing saturant
DE19704858B4 (en) * 1997-02-10 2005-07-21 Voith Paper Gmbh & Co. Kg Method and device for producing double-sided coated paper webs
US5843529A (en) * 1997-02-13 1998-12-01 Beloit Technologies, Inc. Pre-metering rod
FI102200B (en) * 1997-02-24 1998-10-30 Valmet Corp Method for processing paperboard or paper, arrangement for carrying out the method and product obtained by the method
DE19722117C2 (en) * 1997-05-27 2000-09-07 Bematec S A Coating of porous supports
DE19958109A1 (en) * 1999-12-02 2001-06-07 Voith Paper Patent Gmbh Assembly for the indirect coating of a moving paper/cardboard web has structured peripheral positions and peripheral angles around the transfer roller for an effective and consistent surface coating action
JP4271501B2 (en) 2003-06-06 2009-06-03 愛三工業株式会社 Fuel pump
US9304415B2 (en) * 2013-04-26 2016-04-05 Hewlett-Packard Development Company, L.P. Coating liquid dispensers
TWI740640B (en) * 2020-09-11 2021-09-21 全利機械股份有限公司 Liquid applying machine for fiber products

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA882640A (en) * 1971-10-05 D. Collins John Doctoring double coating on substrate
US2582407A (en) * 1945-05-24 1952-01-15 Minnesota & Ontario Paper Co Process for coating paper
US2970564A (en) * 1955-12-23 1961-02-07 Champion Paper & Fibre Co Apparatus for coating paper
US2870738A (en) * 1957-02-28 1959-01-27 Black Clawson Co Paper coating machine
US2937955A (en) * 1957-12-24 1960-05-24 Continental Can Co Coating process
US3202536A (en) * 1961-11-08 1965-08-24 Beloit Corp Method and apparatus for coating paper
US3511696A (en) * 1966-06-16 1970-05-12 Stauffer Chem Co Of Canada Ltd Reverse roll coating process and apparatus
US3387585A (en) * 1967-03-21 1968-06-11 Farrell John Jerome Apparatus for metering a coated carrier
GB1337345A (en) * 1970-11-30 1973-11-14 Fuji Photo Film Co Ltd Producing capsule-coated sheets
US4177304A (en) * 1977-03-17 1979-12-04 Beloit Corporation Method of coating both sides of a travelling web
US4250211A (en) * 1978-05-31 1981-02-10 Consolidated Papers, Inc. Paper coating method and apparatus
JPS5898166A (en) * 1981-12-07 1983-06-10 Nisshin Steel Co Ltd Method for applying aqueous solution for surface treatment to metal strip
CH663362A5 (en) * 1984-01-07 1987-12-15 Jagenberg Ag DEVICE FOR COATING MATERIAL SHEETS RUNNING ON A SUPPORT ROLLER WITH ADJUSTABLE APPLICATION THICKNESS.
GB8402190D0 (en) * 1984-01-27 1984-02-29 Wiggins Teape Group Ltd Coating paper
DE3417487A1 (en) * 1984-05-11 1985-11-21 J.M. Voith Gmbh, 7920 Heidenheim DEVICE FOR APPLYING A LIQUID ON A RUNNING TRAIN
JPS62106672U (en) * 1985-12-24 1987-07-08
DE3713278A1 (en) * 1986-04-30 1987-11-05 Will E C H Gmbh & Co Process and device for applying a flowable composition onto a web
DE3633833C1 (en) * 1986-10-04 1993-05-06 Vits Maschinenbau Gmbh Method and device for applying a liquid or pasty substance to a material web
AT396437B (en) * 1986-10-25 1993-09-27 Voith Gmbh J M PRE-DOSING DEVICE IN A COATING PLANT
DE3725893C1 (en) * 1987-08-05 1988-12-15 Voith Gmbh J M Process and device for coating and for smoothing the coating
EP0352465A3 (en) * 1988-07-27 1990-10-10 J.M. Voith GmbH Application device for coating moving webs, and coating process

Also Published As

Publication number Publication date
DE3922535C3 (en) 1999-03-18
NO176008C (en) 1995-01-18
DE3922535C2 (en) 1994-07-14
US5171612A (en) 1992-12-15
NO893045D0 (en) 1989-07-26
FI94274C (en) 1995-08-10
JPH0283063A (en) 1990-03-23
NO893045L (en) 1990-01-29
FI893468A0 (en) 1989-07-18
US5101760A (en) 1992-04-07
FI893468A (en) 1990-01-28
EP0352465A3 (en) 1990-10-10
FI94274B (en) 1995-04-28
ATE87677T1 (en) 1993-04-15
DE58903929D1 (en) 1993-05-06
CA1336374C (en) 1995-07-25
EP0352582B1 (en) 1993-03-31
ES2039766T3 (en) 1993-10-01
DE3922535A1 (en) 1990-02-01
US4980207A (en) 1990-12-25
JP2524641B2 (en) 1996-08-14
NO176008B (en) 1994-10-10
EP0352582A2 (en) 1990-01-31
EP0352582A3 (en) 1991-06-12
EP0352465A2 (en) 1990-01-31

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