EP2598694A1 - Process for producing a fibrous web, in particular a paper or board web - Google Patents

Process for producing a fibrous web, in particular a paper or board web

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Publication number
EP2598694A1
EP2598694A1 EP11720775.3A EP11720775A EP2598694A1 EP 2598694 A1 EP2598694 A1 EP 2598694A1 EP 11720775 A EP11720775 A EP 11720775A EP 2598694 A1 EP2598694 A1 EP 2598694A1
Authority
EP
European Patent Office
Prior art keywords
fibrous web
machine
web
section
curtain
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.)
Granted
Application number
EP11720775.3A
Other languages
German (de)
French (fr)
Other versions
EP2598694B1 (en
Inventor
Stephan Hampe
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Voith Patent GmbH
Original Assignee
Voith Patent GmbH
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Classifications

    • 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
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/54—Starch
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/80—Paper comprising more than one coating
    • D21H19/82—Paper comprising more than one coating superposed
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/80—Paper comprising more than one coating
    • D21H19/84—Paper comprising more than one coating on both sides of the substrate
    • 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
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • D21H23/34—Knife or blade type coaters
    • 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
    • D21H23/46—Pouring or allowing the fluid to flow in a continuous stream on to the surface, the entire stream being carried away by the paper
    • D21H23/48—Curtain coaters

Definitions

  • the invention relates to a process for the production of a multilayered and coated fibrous web, in particular a paper or board web, wherein the fibrous web nine is produced in several layers in the former section, dewatered in a press section and dried in a pre-drying section , Furthermore, it relates to a machine for carrying out this method.
  • the method described below is known for producing a multilayer and coated fibrous web, for example a so-called whit top-top or bottom top-test-liner.
  • White top liners and white top test liners are cardboard sheets, which are usually made up of three layers: top layer, protective layer and supine.
  • the cover layer is the side that will be printed later, it consists of white fresh fiber and is additionally painted. It is important that the page to be printed is as white as possible and as smooth and shiny as possible, and has a good printability.
  • the fibrous web should have good strength properties for further use. This is achieved primarily by the weight per unit area, the choice of pulp and the addition of starch to the pulp suspension.
  • the three layers in the forming section are produced individually and then combined to form a fibrous web.
  • the press section it is then mechanically dewatered under pressure in several press nipples and dried in the subsequent pre-drying section by means of heated drying cylinders.
  • the fibrous web is smoothed in a pre-calender and calibrated to uniform thickness, so that the applied in a subsequent film coater pigment-containing primer a as even coverage provides.
  • the precoat and all other coating layers are applied to the top layer.
  • a further coating layer is applied to the cover with a first inking device.
  • a second blade coater then a final top coat is applied with high quality pigments for a good smoothness and gloss development.
  • the web is finished, for example, smoothed and rolled up in a soft-nip calender.
  • the fibrous web Since the surface of the curtain coat layer accurately images the underlying surface of the fibrous web, in this described process it is important that the fibrous web is well pre-smoothed and / or pre-painted to provide the curtain coat layer with a good printable surface. Suggested for this purpose are various devices such as Yan kee cylinder, dryer with metal band, pre-calender or coater.
  • the object of the invention is to further develop the process and the machine so that an improved strength of the produced Fibrous web is achieved at a lower basis weight or with less fibrous material or with more filler, oh no e il ig ig ig ig e e effects on the other important properties arise. Furthermore, a low frequency of demolition and high runnability, and a lower energy requirement for drying in the machine should result.
  • the object is achieved for the aforementioned method according to the invention in that after the pre-drying in a subsequent film applicator on the fibrous web simultaneously starch is applied simultaneously and that the fibrous web in the direction of passage thereafter only on e in he page in ei he curtain coater with pigment colored paint is deleted.
  • a curtain coater much more coating can be applied in one operation than with a film applicator or a blade coater.
  • the fact that it is omitted according to the invention to apply a pigment-containing precoat in the film applicator can be applied from both sides starch for increasing the strength, which allows a higher amount of starch application and leads to a higher penetration into the fibrous web, whereby the strength is increased more. That it may be the basis weight reduced or it may be used in one or more layers of lower quality pulp, such as a poorer waste paper quality, or more filler.
  • the lower frequency of breakage results in the film applicator in that less viscous starch liquor is applied instead of a higher viscous coating color, and in the curtain coating unit, the impervious order is applied.
  • An additional benefit is that, after starch has been applied, drying can be done more efficiently in a more efficient manner in contact with heated cylinders than in previous methods with more energy-intensive IR or air dryers.
  • no pigment coating is applied in the film applicator, it is advantageous, in particular, to avoid adverse surface quality effects and to achieve a good print surface with improved whiteness, smoothness and gloss properties, when the fibrous web after painting in the curtain coater in a blade coater is once again painted on one side with pigment-containing paint.
  • the coating surface becomes very smooth and uniform.
  • a higher quality pigment can be used for the topcoat applied here. Due to the previous good coverage by the curtain coat, not so much top coat is needed and the water of the coating color penetrates into the blade coater no longer so deep that this could cause moistening and weakening of the fibrous web, which would lead to increased demolition.
  • the starch application in the film applicator can take place and then, however, before the curtain coating, the smoothing in a pre-calender.
  • the surface becomes sufficiently smooth for a good curtain coat, but the consequent compaction and reduction of the water absorbency of the fibrous web takes place only after the starch application.
  • curtain coat is two-ply or multi-ply, wherein a differently composed coating color is used for at least two of the layers of the curtain coat.
  • a differently composed coating color is used for at least two of the layers of the curtain coat.
  • a quantity of starch based on the dry weight of the starch of 1 to 4 g / m 2 per side, in particular at least 2 g / m 2 per side on the fibrous web
  • the usual application amount for a pigment-containing precoat by means of a film applicator is approximately 8 g / m 2 . Since the expected tearing frequency in the method according to the invention is low, all the method steps up to the end of the process can be particularly advantageous
  • the object is achieved according to the invention for the machine described in the introduction in that after the pre-drying section in the direction of the fibrous web successively has a film applying device applying starch on both sides, then a curtain coater and then a blade coater.
  • the object is also achieved according to the invention, by a machine which after the pre-drying in the direction of the fibrous web successively applying a double-sided thickness applying film applicator, then a pre-calender and then a curtain coater.
  • Both machines are capable of achieving the advantages previously described and of avoiding adverse effects on the quality of the painted surface.
  • the surface before the curtain coat can be prepared so that a good quality can be created by the stroke.
  • a final topcoat may be applied resulting in a smoother surface.
  • the two variants of the machine can be combined with advantage.
  • the machine Due to the lower tendency to tear and the good runnability of the machine according to the invention, it is additionally possible to carry out the machine as an on-line machine, the fibrous web of The former until the roll of finished paper by all the application and coating equipment, drying sections and calenders or smoothing devices can be performed online one after the other without the machine has a Swissrollung therebetween.
  • Figure 1 shows a part of a machine according to the invention for carrying out an embodiment of the method according to the invention.
  • FIG. 1 shows a preferred embodiment of the machine according to the invention from the pre-dryer section 10 or a machine, as used, for example, for producing a white-top liner or white-top test-liner board web according to a preferred embodiment of the method according to the invention. can be used .
  • the production of the multilayer board web in a former section and the dewatering thereof in a press section are not shown.
  • the fibrous web 9 is after drying in the pre-dryer section 10 without passing through a smoothing device, fed directly into the film applicator 1 and there applied from both sides with starch, which is applied in the form of an aqueous starch solution or starch suspension over rollers. Thereafter, the fibrous web is deflected around a so-called Airturn around contactless and led to the first after-dryer section (20), in which it is dried by contact with heated drying cylinders to the desired moisture content. Due to the double-sided application of starch to the not yet smoothed fibrous web much starch can be applied and the starch can penetrate far into the interior and so particularly good increase the strength of the fibrous web.
  • the fibrous web is smoothed so that its surface has good properties for subsequent non-contact coating.
  • a curtain coater (3) which in the illustrated embodiment sweeps the top of the fibrous web with a two-ply curtain coat with pig-containing paint.
  • the two-layer curtain coating is produced by the interaction of a first metering device (3a) for the first curtain layer and a further metering device (3b) for the further curtain layer.
  • a first metering device for the first curtain layer
  • a further metering device 3b
  • different coating colors can be used in the two layers, which enables a good separation and the necessary properties of the different layers.
  • the two-ply curtain coating ensures good and even coverage of the fibrous web.
  • a coating color with less high quality pigment can be used for the base coverage, while in the second curtain layer for fine coverage, medium to higher quality pigment can be used.
  • the coating layer and the fibrous web are first dried without contact, for example with IR driers (4a), which may be provided on one or both sides of the web.
  • IR driers (4a) which may be provided on one or both sides of the web.
  • air dryers can also be used, depending on the amount of coating applied and the coating color.
  • the coating and the fibrous web are dried again in a second after-dryer section by means of heated drying cylinders (30). This after-drying also contributes to the reduction of possible curling of the fibrous web due to one-sided coating and drying.
  • the upper side of the fibrous web with pigment-containing coating color is once more painted to form a cover layer.
  • a coating color is used with high-quality pigment, since the top layer is the later to be printed layer.
  • the Blade coater 6 is shown with a doctor bar, which strips off the excess coating color.
  • flexible or rigid blades may be used. It is advantageous for smoothness, gloss and printability of the cover layer that the blade coating device does not work without contact, but that the cover layer is leveled by the metering rod or the blade and provided with a very smooth surface.
  • the coating layer and the fibrous web are in turn dried without contact. Shown are IR dryer 4b and air dryer 5, with only IR or only air dryer would be conceivable. As soon as the surface is sufficiently dry again, a third after-dryer section 40 follows, where drying is completed with the help of drying cylinders.
  • an on-line machine and an on-line method are shown, i. H . al le process steps for producing and finishing the fibrous web, in particular starch application, brushing, smoothing done in a Masch ine succession without Swissaufroll ung.
  • the rewinding and slitting which always takes place in a separate machine.
  • this also no longer belongs to the manufacture and finishing, since in this case the properties of the fibrous web are no longer changed. LIST OF REFERENCES

Landscapes

  • Paper (AREA)

Abstract

The invention relates to a process for producing a fibrous web (9), in particular a paper or board web, wherein the fibrous web is produced with a plurality of plies in a forming section, dewatered in a press section and dried in a predryer section (10), wherein starch is then simultaneously applied to both sides of the fibrous web in a film application apparatus (1), and wherein, after that, in the passage direction, the fibrous web is coated with pigment-containing ink only on one side in a curtain coating device (3). The invention also relates to a machine for carrying out such a process.

Description

Verfahren zur Herstellung einer Faserstoffbahn, insbesondere einer Papieroder Kartonbahn Die Erfindung betrifft ein Verfahren zur Herstellung einer mehrlagigen und gestrichenen Faserstoffbahn, insbesondere einer Papier- oder Kartonbahn, wobei die Faserstoffbah n i n e in er Formerpartie mehrlagig hergestellt, in einer Pressenpartie entwässert und in einer Vortrockenpartie getrocknet wird. Weiterhin betrifft es eine Maschine zur Durchführung dieses Verfahrens.  The invention relates to a process for the production of a multilayered and coated fibrous web, in particular a paper or board web, wherein the fibrous web nine is produced in several layers in the former section, dewatered in a press section and dried in a pre-drying section , Furthermore, it relates to a machine for carrying out this method.
Zur Herstellung einer mehrlagigen und gestrichenen Faserstoffbahn, zum Beispiel eines sogenannten Wh ite-Top-L in ers ode r Wh ite-Top-Test-Liners ist das nachfolgend beschriebene Verfahren bekannt. The method described below is known for producing a multilayer and coated fibrous web, for example a so-called whit top-top or bottom top-test-liner.
White-Top-Liner und White-Top-Test-Liner sind Kartonbahnen, die üblicherweise aus drei Lagen aufgebaut sind: Decklage, Schonschicht und Rückenlage. Die Decklage ist die Seite, die später bedruckt wird, sie besteht aus weißer Frischfaser und wird zusätzlich noch gestrichen. Wichtig ist es, dass die zu bedruckende Seite möglichst weiß und möglichst glatt und glänzend wird, sowie eine gute Bedruckbarkeit aufweist. Außerdem soll die Faserstoffbahn für die weitere Verwendung gute Festigkeitseigenschaften besitzen. Das wird vor allem durch das Flächengewicht, die Faserstoffauswahl und die Zugabe von Stärke in die Faserstoffsuspension erreicht. White top liners and white top test liners are cardboard sheets, which are usually made up of three layers: top layer, protective layer and supine. The cover layer is the side that will be printed later, it consists of white fresh fiber and is additionally painted. It is important that the page to be printed is as white as possible and as smooth and shiny as possible, and has a good printability. In addition, the fibrous web should have good strength properties for further use. This is achieved primarily by the weight per unit area, the choice of pulp and the addition of starch to the pulp suspension.
Bei dem bekannten Verfahren werden die drei Lagen in der Formerpartie einzeln hergestellt und anschließend zu einer Faserstoffbahn zusammengeführt. In der Pressenpartie wird sie dann in mehreren Pressnips mechanisch unter Druck entwässert und in der sich anschließenden Vortrockenpartie mithilfe von beheizten Trockenzylindern getrocknet. Anschließend wird die Faserstoffbahn in einem Vorkalander geglättet und auf gleichmäßige Dicke kalibriert, damit der in einer nachfolgenden Filmstreicheinrichtung aufgebrachte pigment-haltige Vorstrich eine möglichst gleichmäßige Abdeckung liefert. Der Vorstrich und alle weiteren Strichschichten werden auf die Decklage appliziert. In the known method, the three layers in the forming section are produced individually and then combined to form a fibrous web. In the press section, it is then mechanically dewatered under pressure in several press nipples and dried in the subsequent pre-drying section by means of heated drying cylinders. Subsequently, the fibrous web is smoothed in a pre-calender and calibrated to uniform thickness, so that the applied in a subsequent film coater pigment-containing primer a as even coverage provides. The precoat and all other coating layers are applied to the top layer.
Da der Vorstrich noch nicht für eine vollständige Abdeckung reicht, wird mit einer ersten Kl ingenstreicheinrichtung eine weitere Strichsch icht zur Abdecku ng aufgebracht. Mit einer zweiten Klingenstreicheinrichtung wird dann ein abschließender Deckstrich mit hochwertigen Pigmenten für ein gute Glätte- und Glanzentwicklung aufgetragen. Zum Schluss wird die Bahn zum Beispiel in einem Softnip-Kalander fertig geglättet und aufgerollt. Since the precoat does not yet suffice for complete coverage, a further coating layer is applied to the cover with a first inking device. With a second blade coater then a final top coat is applied with high quality pigments for a good smoothness and gloss development. Finally, the web is finished, for example, smoothed and rolled up in a soft-nip calender.
Da d ie Kl ingenstreicheinrichtu ngen häufig Abrisse verursachen und die Runnability verschlechtern, wird, um den Wirkungsgrad n icht zu stark zu beeinträchtigen , das Verfahren meist auf zwei Maschinen aufgeteilt: E ine Papiermaschine, in der die Faserstoffbahn bis zum Aufbringen des Vorstrichs in der Filmstreicheinrichtung hergestellt und von einer Zwischenaufrollung aufgerollt wird . Und eine Streichmaschine, die mit einer Abrollung beginnt und in der die weiteren Strichschichten mit Klingenstreicheinrichtungen aufgebracht werden und die Faserstoffbahn fertig geglättet wird. Weiterhin ist ein Verfahren aus der Druckschrift WO 2005/095711 A1 bekannt, dass die Nachteile des oben beschnebenen Verfahrens bezüglich Abrisshäufigkeit und hohen Farbüberschussmengen in den Klingenstreicheinrichtungen vermeidet, indem eine Vorhangstreicheinrichtung als Ersatz für die Klingenstreicheinrichtungen eingesetzt wird. Da die Oberfläche der Vorhangstrichschicht die darunter liegende Oberfläche der Faserstoffbahn genau abbildet, ist es in diesem beschriebenen Verfahren wichtig, dass die Faserstoffbahn gut vorgeglättet und/oder vorgestrichen ist, damit die Vorhangstrichschicht eine gut zu bedruckende Oberfläche bietet. Vorgeschlagen werden hierzu verschiedene Vorrichtungen wie Yan kee-Zylinder, Trockner mit Metallband, Vorkalander oder Vorstreicheinrichtung. Because the paint coaters often cause breaks and deteriorate runnability, the process is usually split between two machines, a paper machine in which the fibrous web travels until the precoat is applied in the film coater produced and rolled up by a Zwischenaufrollung. And a coating machine, which starts with a unwinding and in which the other coating layers are applied with blade coaters and the fibrous web is finished smoothing. Furthermore, a method from document WO 2005/095711 A1 is known that avoids the disadvantages of the above-described method with regard to the frequency of breakage and high excess quantities of paint in the blade coaters by using a curtain coater as a replacement for the blade coaters. Since the surface of the curtain coat layer accurately images the underlying surface of the fibrous web, in this described process it is important that the fibrous web is well pre-smoothed and / or pre-painted to provide the curtain coat layer with a good printable surface. Suggested for this purpose are various devices such as Yan kee cylinder, dryer with metal band, pre-calender or coater.
Die Aufgabe der Erfind ung ist es, das Verfahren und die Maschine so weiterzuentwickeln, dass eine verbesserte Festigkeit der hergestellten Faserstoffbahn bei geringerem Flächengewicht oder mit geringwertigerem Faserstoff oder mit mehr Füllstoff erreicht wird, oh n e d ass n achte i l ig e Auswirkungen auf die anderen wichtigen Eigenschaften entstehen. Weiterhin soll sich eine geringe Abrisshäufigkeit und hohe Runnability, sowie ein geringerer Energiebedarf für die Trocknung in der Maschine ergeben. The object of the invention is to further develop the process and the machine so that an improved strength of the produced Fibrous web is achieved at a lower basis weight or with less fibrous material or with more filler, oh no e il ig ig ig ig e e effects on the other important properties arise. Furthermore, a low frequency of demolition and high runnability, and a lower energy requirement for drying in the machine should result.
Die Aufgabe wird für das eingangs genannte Verfahren erfindungsgemäß dadurch gelöst, dass nach der Vortrockenpartie in einer sich anschließenden Filmauftragsvorrichtung auf die Faserstoffbahn beidseitig simultan Stärke aufgetragen wird und dass die Faserstoffbahn in Durchlaufrichtung danach nur auf e in er Seite i n ei n er Vorhangstreicheinrichtung mit pigment-haltiger Farbe gestrichen wird. Mit einer Vorhangstreicheinrichtung kann in einem Vorgang wesentlich mehr Strich aufgetragen werden als mit einer Filmauftragsvorrichtung oder einer Klingenstreicheinrichtung. Dadurch dass erfindungsgemäß darauf verzichtet wird, in der Filmauftragsvorrichtung einen pigmenthaltigen Vorstrich aufzubringen, kann von beiden Seiten Stärke zur Festigkeitssteigerung appliziert werden, was eine höhere Stärkeauftragsmenge ermöglicht und zu einer höheren Eindringung in die Faserstoffbahn führt, wodurch die Festigkeit mehr gesteigert wird. D.h. es kann das Flächengewicht reduziert werden oder es kann in einer oder mehreren Lagen ein geringwertigerer Faserstoff, wie zum Beispiel eine schlechtere Altpapierqualität, oder mehr Füllstoff eingesetzt werden. The object is achieved for the aforementioned method according to the invention in that after the pre-drying in a subsequent film applicator on the fibrous web simultaneously starch is applied simultaneously and that the fibrous web in the direction of passage thereafter only on e in he page in ei he curtain coater with pigment colored paint is deleted. With a curtain coater much more coating can be applied in one operation than with a film applicator or a blade coater. The fact that it is omitted according to the invention to apply a pigment-containing precoat in the film applicator can be applied from both sides starch for increasing the strength, which allows a higher amount of starch application and leads to a higher penetration into the fibrous web, whereby the strength is increased more. That it may be the basis weight reduced or it may be used in one or more layers of lower quality pulp, such as a poorer waste paper quality, or more filler.
Die geringere Abrisshäufigkeit ergibt sich in der Filmauftragsvorrichtung dadurch, dass weniger viskose Stärkeflotte aufgetragen wird anstatt einer höher viskosen Streichfarbe, und in der Vorhangstreicheinrichtu ng du rch den konta ktlosen Auftrag. Ein zusätzlicher Vorteil ist, dass nach dem Auftrag von Stärke die Trocknung ohne Probleme energieeffizienter im Kontakt mit beheizten Zylindern erfolgen kann statt wie in den bisherigen Verfahren mit energieintensiveren IR- oder Lufttrocknern. Da in der Filmauftragsvorrichtung kein Pigmentstrich aufgebracht wird, ist es darüber hinaus vorteilhaft, insbesondere um nachteilige Auswirkungen bei der Oberflächenqualität zu vermeiden und eine gut zu bedruckende Oberfläche mit verbesserten Eigenschaften bezüglich Weiße, Glätte und Glanz zu erzielen, wenn die Faserstoffbahn nach dem Streichen in der Vorhangstreicheinrichtung in einer Klingenstreicheinrichtung noch mal einseitig mit pigment-haltiger Farbe gestrichen wird. Durch das Aufbringen der Streichfarbe auf die Faserstoffbahn mit einer flexiblen oder steifen Klinge oder mit einem Rakelstab wird die Strichoberfläche sehr glatt und gleichmäßig. Für den hier aufgebrachten Deckstrich, kann ein höherwertiges Pigment verwendet werden. Aufgrund der vorherigen guten Abdeckung durch den Vorhangstrich, wird nicht soviel Deckstrich benötigt und das Wasser der Streichfarbe dringt in der Klingenstreicheinrichtung nicht mehr so tief ein, dass dadurch eine Befeuchtung und Schwächung der Faserstoffbahn entsteht könnte, die zu vermehrten Abrissen führen würde. The lower frequency of breakage results in the film applicator in that less viscous starch liquor is applied instead of a higher viscous coating color, and in the curtain coating unit, the impervious order is applied. An additional benefit is that, after starch has been applied, drying can be done more efficiently in a more efficient manner in contact with heated cylinders than in previous methods with more energy-intensive IR or air dryers. In addition, since no pigment coating is applied in the film applicator, it is advantageous, in particular, to avoid adverse surface quality effects and to achieve a good print surface with improved whiteness, smoothness and gloss properties, when the fibrous web after painting in the curtain coater in a blade coater is once again painted on one side with pigment-containing paint. By applying the coating color to the fibrous web with a flexible or rigid blade or a doctor bar, the coating surface becomes very smooth and uniform. For the topcoat applied here, a higher quality pigment can be used. Due to the previous good coverage by the curtain coat, not so much top coat is needed and the water of the coating color penetrates into the blade coater no longer so deep that this could cause moistening and weakening of the fibrous web, which would lead to increased demolition.
In vorteilhafter Weise kann direkt nach der Trocknung der Faserstoffbahn in der Vortrockenpartie der Stärkeauftrag in der Filmauftragsvorrichtung erfolgen und danach aber noch vor dem Vorhangstreichen die Glättung in einem Vorkalander. Somit wird die Oberfläche ausreichend glatt für einen guten Vorhangstrich, die damit verbundene Verdichtung und Verringerung der Wasseraufnahmefähigkeit der Faserstoffbahn findet aber erst nach dem Stärkeauftrag statt. Advantageously, immediately after the drying of the fibrous web in the pre-drying section, the starch application in the film applicator can take place and then, however, before the curtain coating, the smoothing in a pre-calender. Thus, the surface becomes sufficiently smooth for a good curtain coat, but the consequent compaction and reduction of the water absorbency of the fibrous web takes place only after the starch application.
Ebenso ist es vorteilhaft für das erfindungsgemäße Verfahren, wenn der Likewise, it is advantageous for the inventive method, if the
Vorhangstrich zweilagig oder mehrlagig ist, wobei für mindestens zwei der Lagen des Vorhangsstrichs eine unterschiedlich zusammengesetzte Streichfarbe verwendet wird. Dadurch kann zum Beispiel für die erste Lage geringwertigeres und damit billigeres Pigment eingesetzt werden, und für die zweite Lage oder weitere Lagen höherwertiges und teureres. Curtain coat is two-ply or multi-ply, wherein a differently composed coating color is used for at least two of the layers of the curtain coat. As a result, it is possible, for example, to use less-valued and therefore cheaper pigment for the first layer, and higher-quality and more expensive for the second layer or further layers.
Um die festig keitssteigernde Wirkung besonders gut zu nutzen, ist es vorteilhaft eine Stärkemenge bezogen auf das Trockengewicht der Stärke von 1 bis 4 g/m2 je Seite, insbesondere mindestens 2 g/m2 je Seite auf die Faserstoffbahn In order to make particularly good use of the strength-increasing effect, it is advantageous to use a quantity of starch based on the dry weight of the starch of 1 to 4 g / m 2 per side, in particular at least 2 g / m 2 per side on the fibrous web
aufzutragen. apply.
Um den Effekt des fehlenden Vorstrichs in der Filmauftragsvorrichtung zu kompensieren und eine gute Abdeckung durch den Strich zu bekommen ist es außerdem vorteilhaft, wenn in der Vorhangstreicheinrichtung eine hohe Strichmenge von 10 bis 30 g/m2 bezogen auf das Trockengewicht des Strichs, bevorzugt von 12 bis 25 g/m2 aufgetragen wird. Übliche Auftragsmenge bei einem pigment-haltigen Vorstrich mittels Filmauftragseinrichtung sind ca. 8 g/m2. Da die zu erwartende Abrisshäufigkeit in dem erfindungsgemäßen Verfahren gering ist, können besonders vorteilhaft alle Verfahrensschritte bis zum In order to compensate for the effect of the missing precoating in the film applicator and to get a good coverage by the stroke, it is also advantageous if in the curtain coater a high Coating amount of 10 to 30 g / m 2 based on the dry weight of the bar, preferably from 12 to 25 g / m 2 is applied. The usual application amount for a pigment-containing precoat by means of a film applicator is approximately 8 g / m 2 . Since the expected tearing frequency in the method according to the invention is low, all the method steps up to the end of the process can be particularly advantageous
Fertigpapier, bei denen die Faserstoffbahn gestrichen oder getrocknet oder geglättet wird, nacheinander online ohne Zwischenaufrollung in einer Maschine erfolgen, wobei sich die eine Maschine von der Formerpartie bis zur Auftroll ung des Fertigpapiers erstreckt. Finished paper in which the fibrous web is painted or dried or smoothed, one after the other online without Zwischenaufrollung done in a machine, which extends a machine from the former section to Auftroll ung the finished paper.
Die Aufgabe wird für die eingangs beschriebene Maschine erfindungsgemäß dadurch gelöst, dass sie nach der Vortrockenpartie in Laufrichtung der Faserstoffbahn nacheinander eine beidseitig Stärke auftragende Filmauftragsvorrichtung, dann eine Vorhangstreicheinrichtung und dann eine Klingenstreicheinrichtung aufweist. The object is achieved according to the invention for the machine described in the introduction in that after the pre-drying section in the direction of the fibrous web successively has a film applying device applying starch on both sides, then a curtain coater and then a blade coater.
Die Aufgabe wird erfindungsgemäß ebenso gelöst, durch eine Maschine, die nach der Vortrockenpartie in Laufrichtung der Faserstoffbahn nacheinander eine beidseitig Stärke auftragende Filmauftragsvorrichtung, dann einen Vorkalander und dann eine Vorhangstreicheinrichtung aufweist. The object is also achieved according to the invention, by a machine which after the pre-drying in the direction of the fibrous web successively applying a double-sided thickness applying film applicator, then a pre-calender and then a curtain coater.
Beide Maschinen sind geeignet, die vorher beschriebenen Vorteile zu erzielen und nachteilige Auswirkungen auf die Qualität der gestrichenen Oberfläche zu vermeiden. Im Vorkalander kann die Oberfläche vor dem Vorhangstrich so vorbereitet werden, dass eine gute Qualität durch den Strich entstehen kann. Und in der Klingenstreichvorrichtung kann ein abschließender Deckstrich aufgebracht werden, der zu einer glätteren Oberfläche führt. Natürlich können die beiden Varianten der Maschine mit Vorteil auch kombiniert werden. Both machines are capable of achieving the advantages previously described and of avoiding adverse effects on the quality of the painted surface. In the pre-calender, the surface before the curtain coat can be prepared so that a good quality can be created by the stroke. And in the blade coater, a final topcoat may be applied resulting in a smoother surface. Of course, the two variants of the machine can be combined with advantage.
Durch die geringere Abrissneigung und die gute Runnability der erfindungsgemäßen Maschine ist es in zusätzlich vorteilhafter Weise möglich, die Maschine als eine online-Maschine auszuführen, wobei die Faserstoffbahn von der Formerpartie bis zur Aufrollung des Fertigpapiers durch alle Auftrags- und Streicheinrichtungen, Trockenpartien und Kalander oder Glätteinrichtungen nacheinander online geführt werden kann, ohne dass die Maschine dazwischen eine Zwischenaufrollung aufweist. Due to the lower tendency to tear and the good runnability of the machine according to the invention, it is additionally possible to carry out the machine as an on-line machine, the fibrous web of The former until the roll of finished paper by all the application and coating equipment, drying sections and calenders or smoothing devices can be performed online one after the other without the machine has a Zwischenaufrollung therebetween.
Anhand eines Ausführunqsbeispiels werden weitere vorteilhafte Merkmale der Erfindung erläutert unter Bezugnahme auf die Zeichnung. On the basis of a Ausführunqsbeispiels further advantageous features of the invention will be explained with reference to the drawing.
Die Zeichnung zeigt The drawing shows
in Fig.1 einen Teil einer erfindungsgemäßen Maschine zur Durchführung einer Ausführungsform des erfindungsgemäßen Verfahrens. in Figure 1 shows a part of a machine according to the invention for carrying out an embodiment of the method according to the invention.
Nachfolgend wird die Figur detaillierter beschrieben. The figure will be described in more detail below.
Fig .1 zeigt eine bevorzugte Ausführung der erfindungsgemäßen Maschine ab der Vortrockenpartie 1 0 bzw. eine Maschine, wie sie beispielsweise zur Herstellung e iner Wh ite-Top-Liner oder White-Top-Test-Liner Kartonbahn nach einer bevorzugten Ausführungsform des erfindungsgemäßen Verfahrens, verwendet werden kann . Die Herstellung der mehrlagigen Kartonbahn in einer Formerpartie und die Entwässerung derselben in einer Pressenpartie sind nicht dargestellt.  1 shows a preferred embodiment of the machine according to the invention from the pre-dryer section 10 or a machine, as used, for example, for producing a white-top liner or white-top test-liner board web according to a preferred embodiment of the method according to the invention. can be used . The production of the multilayer board web in a former section and the dewatering thereof in a press section are not shown.
Die Faserstoffbahn 9 wird nach der Trocknung in der Vortrockenpartie 10 ohne eine Glättvorrichtung zu durchlaufen, direkt in die Filmauftragsvorrichtung 1 geführt und dort von beiden Seiten mit Stärke beaufschlagt, welche in Form einer wässerigen Stärkelösung oder Stärkesuspension über Walzen aufgetragen wird. Danach wird die Faserstoffbahn um einen sogenannten Airturn herum kontaktlos umgelenkt und zur ersten Nachtrockenpartie (20) geführt, in der sie durch Kontakt mit beheizten Trockenzylindern auf die gewünschte Feuchte getrocknet wird. Durch den beidseitigen Stärkeauftrag auf die vorher noch nicht geglättete Faserstoffbahn kann viel Stärke aufgetragen werden und die Stärke kann weit ins Innere eindringen und so besonders gut die Festigkeit der Faserstoffbahn erhöhen. In dem sich anschließenden Vorkalander 2 wird die Faserstoffbahn geglättet, so dass ihre Oberfläche gute Eigenschaften für das nachfolgende berührungslose Streichen aufweist. Dies erfolgt in einer Vorhangstreicheinrichtung (3), welche in der dargestellten Ausführungsform die Oberseite der Faserstoffbahn mit einem zweilag igen Vorhangstrich mit p ig ment-haltiger Streichfarbe streicht. Der zweilagige Vorhangstrich entsteht durch das Zusammenwirken einer ersten Dosiereinrichtung (3a) für die erste Vorhanglage und einer weiteren Dosiereinrichtung (3b) für die weitere Vorhanglage. Durch diese spezielle Ausführungsform kann in den beiden Lagen unterschiedliche Streichfarbe verwendet werd en , was e i n e ge n au e Absti m m u n g a uf d ie notwe nd ige n Eigenschaften der verschiedenen Lagen ermöglicht. Der zweilagige Vorhangstrich sorgt für eine gute und gleichmäßige Abdeckung der Faserstoffbahn. In der ersten Vorhanglage, die direkt auf dem Papier zu liegen kommt, kann eine Streichfarbe mit weniger hochwertigem Pigment zur Grundabdeckung verwendet werden, während in der zweiten Vorhanglage zur Feinabdeckung Pigment mittlerer bis hochwertigerer Qualität verwendet werden kann. The fibrous web 9 is after drying in the pre-dryer section 10 without passing through a smoothing device, fed directly into the film applicator 1 and there applied from both sides with starch, which is applied in the form of an aqueous starch solution or starch suspension over rollers. Thereafter, the fibrous web is deflected around a so-called Airturn around contactless and led to the first after-dryer section (20), in which it is dried by contact with heated drying cylinders to the desired moisture content. Due to the double-sided application of starch to the not yet smoothed fibrous web much starch can be applied and the starch can penetrate far into the interior and so particularly good increase the strength of the fibrous web. In the adjoining precalender 2, the fibrous web is smoothed so that its surface has good properties for subsequent non-contact coating. This is done in a curtain coater (3), which in the illustrated embodiment sweeps the top of the fibrous web with a two-ply curtain coat with pig-containing paint. The two-layer curtain coating is produced by the interaction of a first metering device (3a) for the first curtain layer and a further metering device (3b) for the further curtain layer. By means of this special embodiment, different coating colors can be used in the two layers, which enables a good separation and the necessary properties of the different layers. The two-ply curtain coating ensures good and even coverage of the fibrous web. In the first curtain layer, which lies directly on the paper, a coating color with less high quality pigment can be used for the base coverage, while in the second curtain layer for fine coverage, medium to higher quality pigment can be used.
Im Anschluss an das Streichen wird die Strichschicht und die Faserstoffbahn zunächst kontaktlos getrocknet, beispielsweise mit IR-Trocknern (4a), die einseitig oder beidseitig der Bahn vorgesehen sein können. Alternativ oder ergänzend können je nach aufgetragener Strichmenge und je nach Streichfarbe auch Lufttrockner eingesetzt werden. Sobald die Oberfläche so angetrocknet ist, dass die Strichschicht auch im Kontakt mit einer Heizfläche nicht mehr beschäd igt werden kan n, wird d ie Strichsch icht und die Faserstoff bahn in einer zweiten Nachtrockenpartie wieder mithilfe von beheizten Trockenzylindern (30) getrocknet. D iese Nachtrocken partie d ient au ch zu r Reduzieru ng ein er eventuel len Rollneigung der Faserstoffbahn aufgrund des einseitigen Streichens und Trocknens. In der Klingenstreicheinrichtung 6 wird ein weiteres Mal die Oberseite der Faserstoffbahn mit pigment-haltiger Streichfarbe gestrichen, um eine Deckschicht zu bilden. Hierzu wird eine Streichfarbe mit hochwertigem Pigment verwendet, da die Deckschicht die später zu bedruckende Lage darstellt. Die Klingenstreicheinrichtung 6 ist mit einem Rakelstab dargestellt, der die überschüssige Streichfarbe abstreift. Alternativ können auch flexible oder steife Klingen verwendet werden. Vorteilhaft für Glätte, Glanz und Bedruckbarkeit der Deckschicht ist, dass d ie Klingenstreicheinrichtung nicht kontaktlos arbeitet, sondern dass die Deckschicht durch den Rakelstab oder die Klinge egalisiert und mit einer sehr glatten Oberfläche versehen wird. Following the painting, the coating layer and the fibrous web are first dried without contact, for example with IR driers (4a), which may be provided on one or both sides of the web. Alternatively or additionally, air dryers can also be used, depending on the amount of coating applied and the coating color. Once the surface has dried to such an extent that the coating layer can no longer be damaged even in contact with a heating surface, the coating and the fibrous web are dried again in a second after-dryer section by means of heated drying cylinders (30). This after-drying also contributes to the reduction of possible curling of the fibrous web due to one-sided coating and drying. In the blade coater 6, the upper side of the fibrous web with pigment-containing coating color is once more painted to form a cover layer. For this purpose, a coating color is used with high-quality pigment, since the top layer is the later to be printed layer. The Blade coater 6 is shown with a doctor bar, which strips off the excess coating color. Alternatively, flexible or rigid blades may be used. It is advantageous for smoothness, gloss and printability of the cover layer that the blade coating device does not work without contact, but that the cover layer is leveled by the metering rod or the blade and provided with a very smooth surface.
Im Anschluss an das weitere Streichen in der Klingenstreicheinrichtung 6 wird die Strichschicht und die Faserstoffbahn wiederum kontaktlos getrocknet. Dargestellt sind IR-Trockner 4b und Lufttrockner 5, wobei auch nur IR- oder nur Lufttrockner denkbar wären. Sobald die Oberfläche wieder ausreichend trocken ist folgt eine dritte Nachtrockenpartie 40, in der mithilfe von Trockenzylindern fertig getrocknet wird. Der letzte Verfahrensschritt, bevor die fertige Faserstoffbahn in einer Aufrollung 8 zu gro ßen Rol len aufgewickelt wi rd , ist eine Nachglättu ng , d ie in einem Fertigkalander 7 erfolgt. Dargestellt ist ein Softkalander mit einem Kalanderspalt. Following the further brushing in the blade coater 6, the coating layer and the fibrous web are in turn dried without contact. Shown are IR dryer 4b and air dryer 5, with only IR or only air dryer would be conceivable. As soon as the surface is sufficiently dry again, a third after-dryer section 40 follows, where drying is completed with the help of drying cylinders. The last step of the process before the finished fibrous web is wound up in a reel 8 to large size Rol len, is a Nachglättu ng, ie he done in a Fertigkalander 7. Shown is a soft calender with a calender nip.
Sowohl vor dem Vorkalander 2 als auch vor dem Fertigkalander 7 können Befeuchtungseinrichtungen vo rg esehen sein, die Dampf und/oder Wasser auftragen , da m it Glätte und Glanz weiter verbessert und eine eventuelle Rollneigung weiter verringert werden. Both before the pre-calender 2 and before the finished calender 7 moistening facilities can be seen from which apply steam and / or water, since it improves further with smoothness and gloss and a possible curl tendency can be further reduced.
In diesem Ausführungsbeispiel ist eine online-Maschine und ein online-Verfahren darg estel lt, d . h . al le Verfahrensschritte zum Herstellen und Veredeln der Faserstoffbahn, insbesondere Stärkeauftrag, Streichen, Glätten, erfolgen in einer Masch ine nacheinander ohne Zwischenaufroll ung . N icht dargestellt sind das Umrollen und Rollenschneiden, was immer in einer separaten Maschine erfolgt. Dies gehört erfindungsgemäß aber auch nicht mehr zum Herstellen und Veredeln, da hierbei die Eigenschaften der Faserstoffbahn nicht mehr verändert werden. Bezuqszeichenliste In this embodiment, an on-line machine and an on-line method are shown, i. H . al le process steps for producing and finishing the fibrous web, in particular starch application, brushing, smoothing done in a Masch ine succession without Zwischenaufroll ung. Not shown are the rewinding and slitting, which always takes place in a separate machine. However, according to the invention, this also no longer belongs to the manufacture and finishing, since in this case the properties of the fibrous web are no longer changed. LIST OF REFERENCES
1 Filmauftragsvorrichtung 1 film applicator
1 b Airturn  1 b Airturn
2 Vorkalander  2 pre-calenders
3 Vorhangstreicheinrichtung  3 curtain coater
3a Dosiereinrichtung für erste Vorhanglage  3a metering device for first curtain position
3b weitere Dosiereinrichtung für weitere Vorhanglage 3b further metering device for further curtain position
4a IR-Trockner 4a IR dryer
4b weitere IR-Trockner  4b further IR dryers
5 Lufttrockner  5 air dryers
6 Klingenstreicheinrichtung  6 blade coater
7 Fertigkalander  7 finished calenders
8 Aufroll ung  8 rewind
9 Papierbahn  9 paper web
10 Vortrockenpartie  10 pre-drying section
20 erste Nachtrockenpartie  20 first night dry section
30 zweite Nachtrockenpartie  30 second night drying section
40 dritte Nachtrockenpartie  40 third night dry section

Claims

Patentansprüche claims
1 . Verfahren zur Herstellung einer Faserstoffbahn (9), insbesondere einer Papier- oder Kartonbahn, wobei die Faserstoffbahn in einer Formerpartie mehrlagig hergestellt wird, in einer Pressenpartie entwässert und in einer Vortrockenpartie (10) getrocknet wird, 1 . Method for producing a fibrous web (9), in particular a paper or board web, wherein the fibrous web is produced in multiple layers in a former section, dewatered in a press section and dried in a pre-drying section (10),
dadurch gekennzeichnet, characterized,
dass anschließend in einer Filmauftragsvorrichtung (1 ) auf die Faserstoffbahn beidseitig simultan Stärke aufgetragen wird und dass die Faserstoffbahn in Durchlaufrichtung danach nur auf einer Seite in einer Vorhangstreicheinrichtung (3) mit Pigment-haltiger Farbe gestrichen wird. that in a film applicator (1) on both sides of the fibrous web simultaneously thickness is applied and that the fibrous web is then painted in the direction of passage thereafter only on one side in a curtain coater (3) with pigment-containing ink.
2. Verfahren nach Anspruch 1 2. The method according to claim 1
dadurch gekennzeichnet, characterized,
dass die Faserstoffbahn (9) nach dem Streichen in der Vorhangstreicheinrichtung (3) in einer Klingenstreicheinrichtung (6) noch mal einseitig mit Pigment-haltiger Farbe gestrichen wird. that the fibrous web (9) is painted after painting in the curtain coater (3) in a blade coater (6) again on one side with pigment-containing paint.
3. Verfahren nach einem der vorherigen Ansprüche 3. The method according to any one of the preceding claims
dadurch gekennzeichnet, characterized,
dass die Faserstoffbahn (9) direkt nach der Vortrockenpartie (10) in der that the fibrous web (9) directly after the pre-dryer section (10) in the
Filmauftragsvorrichtung (1 ) mit Stärke beaufschlagt wird und in Durchlaufrichtung erst danach, aber noch vor der Vorhangstreicheinrichtung (3) in einem Film applicator (1) is acted upon by starch and in the direction of flow only after, but before the curtain coater (3) in one
Vorkalander (2) geglättet wird. Pre-calender (2) is smoothed.
4. Verfahren nach einem der vorherigen Ansprüche 4. The method according to any one of the preceding claims
dadurch gekennzeichnet, characterized,
dass die Faserstoffbahn (9) in der Vorhangstreicheinrichtung (3) mit einem zweilagigen oder mehrlagigen Vorhangstrich gestrichen wird, wobei für mindestens zwei der Lagen des Vorhangsstrichs eine unterschiedlich in that the fibrous web (9) in the curtain coater (3) is coated with a two-ply or multi-ply curtain coat, with a different one for at least two of the layers of the curtain coat
zusammengesetzte Streichfarbe verwendet wird. composite coating color is used.
5. Verfahren nach einem der vorherigen Ansprüche dadurch gekennzeichnet, 5. The method according to any one of the preceding claims characterized,
dass in der Filmauftragsvorrichtung (1 ) eine Stärkemenge bezogen auf das Trockengewicht der Stärke von 1 bis 4 g/m2 je Seite auf die Faserstoffbahn (9) aufgetragen wird. that in the film applicator (1) a quantity of starch based on the dry weight of the starch of 1 to 4 g / m 2 per side is applied to the fibrous web (9).
6. Verfahren nach einem der vorherigen Ansprüche 6. The method according to any one of the preceding claims
dadurch gekennzeichnet, characterized,
dass in der Vorhangstreicheinrichtung (3) eine Strichmenge bezogen auf das Trockengewicht des Strichs von 10 bis 30 g/m2, insbesondere von 12 bis 25 g/m2 aufgetragen wird. that in the curtain coater (3) a coating amount based on the dry weight of the coating of 10 to 30 g / m 2 , in particular from 12 to 25 g / m 2 is applied.
7. Verfahren nach einem der vorherigen Ansprüche 7. The method according to any one of the preceding claims
dadurch gekennzeichnet, characterized,
dass das alle Verfahrensschritte bis zum Fertigpapier, bei denen die that all the process steps to the finished paper in which the
Faserstoffbahn gestrichen oder getrocknet oder geglättet wird, nacheinander online ohne Zwischenaufrollung in einer Maschine erfolgen, wobei sich die eine Maschine von der Formerpartie bis zur Aufrollung (8) des Fertigpapiers erstreckt. Fiber web is painted or dried or smoothed, one after the other online without Zwischenaufrollung done in a machine, which extends a machine from the former to the reel (8) of the finished paper.
8. Maschine zur Herstellung einer mehrlagigen Faserstoffbahn (9), 8. machine for producing a multilayer fibrous web (9),
insbesondere einer Papier- oder Kartonbahn besonders nach dem in einem der vorherigen Ansprüche beschriebenen Verfahren, welche eine Formerpartie, eine Pressenpartie und eine Vortrocken partie (10) aufweist in particular a paper or board web, in particular according to the method described in one of the preceding claims, which has a former section, a press section and a pre-drying section (10)
dadurch gekennzeichnet, characterized,
dass sie in Laufrichtung der Faserstoffbahn (9) nacheinander eine beidseitig Stärke auftragende Filmauftragsvorrichtung (1 ), dann eine in the direction of the fibrous web (9), successively applying a film application device (1) applying thickness on both sides, then a
Vorhangstreicheinrichtung (3) und dann eine Klingenstreicheinrichtung (6) aufweist.  Curtain coater (3) and then a blade coater (6).
9. Maschine zur Herstellung einer mehrlagigen Faserstoffbahn (9), 9. machine for producing a multilayer fibrous web (9),
insbesondere einer Papier- oder Kartonbahn besonders nach dem in einem der Ansprüche 1 -7 beschriebenen Verfahren, welche eine Formerpartie, eine in particular a paper or board web, in particular according to the method described in one of claims 1 to 7, which comprises a former section, a
Pressenpartie und eine Vortrocken partie (10) aufweist Press section and a pre-drying lot (10)
dadurch gekennzeichnet, dass sie in Laufrichtung der Faserstoffbahn (9) nacheinander eine beidseitig Stärke auftragende Filmauftragsvorrichtung (1 ), dann einen Vorkalander (2) und dann eine Vorhangstreicheinrichtung (3) aufweist. characterized, in the direction of the fibrous web (9), it has successively a film applicator (1) applying thickness on both sides, then a precalender (2) and then a curtain coater (3).
10. Maschine nach Anspruch 8 oder 9 10. Machine according to claim 8 or 9
dadurch gekennzeichnet, characterized,
dass die Maschine als eine online-Maschine ausgeführt ist, wobei die that the machine is designed as an online machine, the
Faserstoffbahn (9) von der Formerpartie bis zur Aufrollung (8) des Fertigpapiers durch alle Auftrags- und Streicheinrichtungen, Trockenpartien und Kalander oder Glätteinrichtungen nacheinander online geführt werden kann, ohne dass die Maschine dazwischen eine Zwischenaufrollung aufweist. Fiber web (9) from the former to the rewinding (8) of the finished paper by all the application and coating facilities, drying sections and calenders or smoothing devices can be performed online one after the other, without the machine has a Zwischenaufrollung therebetween.
EP11720775.3A 2010-07-28 2011-05-20 Process for producing a fibrous web, in particular a paper or board web Revoked EP2598694B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010038530 DE102010038530A1 (en) 2010-07-28 2010-07-28 Process for producing a fibrous web, in particular a paper or board web
PCT/EP2011/058262 WO2012013384A1 (en) 2010-07-28 2011-05-20 Process for producing a fibrous web, in particular a paper or board web

Publications (2)

Publication Number Publication Date
EP2598694A1 true EP2598694A1 (en) 2013-06-05
EP2598694B1 EP2598694B1 (en) 2016-03-30

Family

ID=44486078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11720775.3A Revoked EP2598694B1 (en) 2010-07-28 2011-05-20 Process for producing a fibrous web, in particular a paper or board web

Country Status (4)

Country Link
EP (1) EP2598694B1 (en)
CN (1) CN103025958B (en)
DE (1) DE102010038530A1 (en)
WO (1) WO2012013384A1 (en)

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JP2014208934A (en) * 2013-03-28 2014-11-06 日本製紙株式会社 Coated white paperboard and production method thereof
JP6553926B2 (en) 2015-04-09 2019-07-31 キヤノン株式会社 Imprint apparatus, imprint method, and article manufacturing method
DE102017118218A1 (en) * 2017-08-10 2019-02-14 Voith Patent Gmbh MACHINE AND METHOD FOR PRODUCING A FIBROUS WEB
DE102019134177A1 (en) * 2019-12-12 2021-06-17 Voith Patent Gmbh Machine and method for producing a fibrous web

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FI105118B (en) * 1999-05-12 2000-06-15 Valmet Corp Method for manufacture of paper or cardboard web and a paper or cardboard making machine
SE515824C2 (en) 2000-01-26 2001-10-15 Tetra Laval Holdings & Finance Method for manufacturing a multilayered packaging laminate by wet coating, as well as laminates made according to the procedure
FI111281B (en) * 2001-12-12 2003-06-30 Metso Paper Inc Cardboard finishing procedure
CN100351467C (en) * 2002-05-03 2007-11-28 伊梅里斯矿物有限公司 Paper coating pigments
FI20045110A (en) 2004-03-30 2005-10-01 Metso Paper Inc Process for making coated fiber web
DE102005021983A1 (en) 2005-05-12 2006-11-16 Voith Patent Gmbh Multilayer coating of running board with a liquid or paste medium involves application of a precoat and a top coat especially using curtain and optionally also blade coating
JP5684965B2 (en) 2005-06-20 2015-03-18 大王製紙株式会社 Manufacturing method of coated paper
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Also Published As

Publication number Publication date
DE102010038530A1 (en) 2012-02-02
WO2012013384A1 (en) 2012-02-02
CN103025958B (en) 2016-04-13
CN103025958A (en) 2013-04-03
EP2598694B1 (en) 2016-03-30

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