[go: up one dir, main page]

EP1392926B1 - Applicator - Google Patents

Applicator Download PDF

Info

Publication number
EP1392926B1
EP1392926B1 EP02732368A EP02732368A EP1392926B1 EP 1392926 B1 EP1392926 B1 EP 1392926B1 EP 02732368 A EP02732368 A EP 02732368A EP 02732368 A EP02732368 A EP 02732368A EP 1392926 B1 EP1392926 B1 EP 1392926B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
assembly according
medium
application
lip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02732368A
Other languages
German (de)
French (fr)
Other versions
EP1392926A2 (en
Inventor
Eckart Krägeloh
Franz Fischer
Philipp Speidel
Christoph Henninger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1392926A2 publication Critical patent/EP1392926A2/en
Application granted granted Critical
Publication of EP1392926B1 publication Critical patent/EP1392926B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0283—Flat jet coaters, i.e. apparatus in which the liquid or other fluent material is projected from the outlet as a cohesive flat jet in direction of the work
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/001—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work incorporating means for heating or cooling the liquid or other fluent material
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B05C5/0262—Coating heads with slot-shaped outlet adjustable in width, i.e. having lips movable relative to each other in order to modify the slot width, e.g. to close it
    • 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
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/005—Curtain coaters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S118/00—Coating apparatus
    • Y10S118/04—Curtain coater

Definitions

  • the invention relates to a device for direct or indirect application of a liquid or pasty medium on a moving material web, in particular of paper or cardboard, with a metering formed as a dispensing die, which is formed between an inlet-side lip and a drain-side lip of the applicator.
  • Another generic application device is, for example, in the post-published DE 10012345 described.
  • This is a so-called “curtain coater”, that is to say a curtain application device with which the application medium essentially follows the force of gravity, from a dispensing nozzle onto the surface to be coated.
  • Both types of application devices have a distributor tube for the application medium. From the distributor tube, the medium passes through passage openings into a feed gap and from there into the metering gap forming the application nozzle, from which the medium then emerges.
  • the metering gap is formed by two die lips. By adjusting one of the lips or both lips, the outlet width can be varied.
  • the material web usually runs over a support surface, for example a support roller.
  • the application medium is first applied to the surface of a counter element (eg an applicator roll or an endless circulating belt) in order to be transferred from the counter element to the material web in a nip through which the material web passes ,
  • a counter element eg an applicator roll or an endless circulating belt
  • the one of the two lips forming the metering gap, which lies on the side of the metering gap on which the material web runs onto the applicator, is referred to as the inlet-side lip. Accordingly, that lip which lies on the side of the metering gap on which the material web runs away from the application device is referred to as the outlet-side lip.
  • All of these components are machine-wide (ie over the entire width of the machine for producing and / or finishing the paper or board web reaching) executed. These components are adapted substantially to the width of the material web to be treated, and currently a width of about 10 m and more is not uncommon. In addition, with the ever-increasing machine speeds, uniform application of the medium can be made increasingly difficult. In addition, such elongate components tend to deflections.
  • the applicators or their nozzles have the disadvantage that they are very sensitive to blockages at the delivery area of the machine-wide metering gap, said gap has only a very small opening width of a few millimeters, in particular even only about 0.8 mm.
  • the invention is therefore based on the object to further develop an applicator device, on the one hand, the setting of particles at the delivery area of the application nozzle and on the other hand, a thermal deflection of components of the applicator is avoidable, but at least minimized.
  • both objects are achieved by integrating in each case at least one temperature-flow channel through which a fluid flows in at least one of the two nozzle lips of the application device, wherein the temperature-control channel (11, 12) is closed to the free environment with a thin-walled component (14, 15) and the component (14,15) has a wall thickness (W1) of 0.1-3 mm.
  • a tempering fluid is water or air.
  • the first task (avoidance or reduction of deposits and caking of particles in the critical areas of the application nozzle) with a cooling fluid or even if desired
  • the second task (reduction or prevention of thermal Deflection of the components of the application device responsible for the order result) with a fluid adapted to the temperature of the application medium.
  • the application medium is usually up to about 60 ° C warm, causing the application device, in particular the nozzle lips to heat with the metering gap.
  • the inventors have recognized that with a cool or cooled fluid, a temperature difference can be generated between outer surfaces and inner surfaces of the nozzle lips. As a result, a condensation on the medium-guiding surfaces of the metering is achieved, with this formed condensate prevents the "caking" of particles, but at least significantly reduced.
  • the device thus works almost self-cleaning, without machine shutdowns are necessary and even with prolonged downtime the applicator is immediately ready for use again. Defects in the order layer are avoided.
  • the at least one tempering channel is positioned in the immediate vicinity of the nozzle end, ie at the outlet end or the dispensing area of the device, since this area represents the critical area for the "caking".
  • the at least one temperature control channel is arranged on the side of the nozzle lip (lips) directed towards the free environment, the wall thickness of the nozzle lip being smaller in the region of the temperature control channel on the side facing the free environment, as on the Page touched by the medium.
  • this outer wall portion of the nozzle lip forms a thin-walled component, which also seals the tempering channel to the outside.
  • the component for example a metal strip, only needs to have a thickness of 0.1 to 3 mm, preferably 0.2 to 1 mm.
  • the metal parts that is, the nozzle lip and the metal strip, are connected to each other by laser welding or by gluing or by soldering. This technology enables a high-precision and tight connection. In addition, an unwanted distortion of the die lips is avoided.
  • the device according to the invention is structurally simple. It requires except fluid supplies, which are anyway available on machines for producing or finishing a material web, in particular paper or board web, for example, for cooling gutters and / or walls, no extra components.
  • a corresponding branch of the fluid supply line can be accomplished in a simple manner.
  • the application device for coating a running paper web B comprises a support structure or support beam 1, which extends over the entire machine width (width of the paper making or finishing machine, or width of the applicator device).
  • the paper web runs over a support roller W and is to be coated directly with the application medium M.
  • the support beam 1 includes a distributor tube 2 (so-called Farbverteilrohr) for the applied liquid or pasty application medium M, such as pigment-containing coating color, glue or starch.
  • a distributor tube 2 so-called Farbverteilrohr
  • a compensation chamber 3 connects, which continues in a supply channel 4.
  • the feed channel 4 opens into a metering gap 5 which is formed between an inlet-side lip 6 and an outlet-side lip 7.
  • the inlet-side lip 6 is the one at which the surface to be coated (in this case paper web B) tapers to the metering gap 5. Accordingly, accordingly, the drain-side lip 7 is the one at which the web expires.
  • FIG. 1 It can be seen that the free end of the inlet-side lip 6 extends beyond the free end of the drain-side lip 7 and is provided with a concave curved deflection surface 8 for degassing of the application medium.
  • FIG. 2 Plotted arrows Z, which should indicate the supply of a fluid, such as water or air, in the temperature control channel 11 and 12 respectively.
  • a fluid such as water or air
  • the respective selected fluid water or air can be passed through the channels 11,12 in the start-up phase and / or in the operating phase of the device.
  • the fluid is used for cooling, it should be colder than the environment.
  • the above-mentioned wall thicknesses W 1 are advantageously formed by thin components 14 and 15, so that the entire nozzle lip heated by the application medium, dryers, etc., can thermally deform only insignificantly when a cooling fluid flows through the temperature control channels 11 and 12.
  • FIG. 1 is also removable, that the component 14 is divided into two parts and in this installation variant shown consists of a horizontal leg 14a and a vertical leg 14b.
  • the leg 14b also serves as a point of attack for a known adjusting device 16, with which the distance of the inlet-side lip 6 to the outlet-side lip 7 and thus the width of the metering 5 is adjustable and variable.
  • the component 14 may also be integrally formed, as in FIGS. 2 to 4 is shown.
  • the closing of the tempering channel 11, 12 with the components 14,15 takes place here in the example with a thin sheet metal strip of 0.7 mm thickness.
  • the connection with the metallic component of the die lip 6, 7 takes place with high precision.
  • a laser welding process in particular with a high-power diode laser in the power range of 1.2 to 3.0 kilowatts is provided. With such a weld executed there is no risk of heat distortion of the nozzle lip.
  • the length of the two die lips 6 and 7 can be the same length (see FIGS. 3 and 4 ) or also be formed by the inlet-side lip 6 - like FIG. 1 and 2 shows - extends beyond the free end of the drain-side lip 7 addition.
  • FIG. 3 an applicator for curtain coating (Curtain Coating) is shown, which is essentially the same as the device.
  • FIG. 1 is constructed and therefore provided with the same reference numerals.
  • the nozzle lips 6 and 7 with tempering channels 11 and 12 and thin outer walls 14 and 15 are in this case arranged pointing vertically downwards and are formed the same length.

Landscapes

  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Nozzles (AREA)
  • Eye Examination Apparatus (AREA)
  • Massaging Devices (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

An applicator device and method where on the one hand adherence of particles in the dispensing area of the applicator nozzle, and on the other hand a thermal deflection of applicator device components can be prevented, or at least minimized. At least one thermal control channel through which a fluid flows is integrated into at least one of the two nozzle lips of the applicator device. Water or air can be used as temperature controlling fluids.

Description

Die Erfindung betrifft eine Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton, mit einem als Auftragsdüse ausgebildeten Dosierspalt, der zwischen einer zulaufseitigen Lippe und einer ablaufseitigen Lippe der Auftragseinrichtung gebildet ist.The invention relates to a device for direct or indirect application of a liquid or pasty medium on a moving material web, in particular of paper or cardboard, with a metering formed as a dispensing die, which is formed between an inlet-side lip and a drain-side lip of the applicator.

Eine solche gattungsgemäße Auftragsvorrichtung ist bekannt aus der EP-A 0701022 . In dieser Druckschrift ist eine sogenannte " Freistrahldüse" offenbart, wo ein von der Abgabe- bzw. Auftragsdüse unter Druck ausgestoßener Strahl frei und ungestützt durch die Umgebung direkt oder in indirekter Weise auf die laufende Materialbahn auftrifft.Such a generic application device is known from the EP-A 0701022 , In this document, a so-called "free-jet nozzle" is disclosed where a jet ejected under pressure from the dispensing or application nozzle impinges freely and unsupported by the environment directly or in an indirect manner on the moving material web.

Eine weitere gattungsgemäße Auftragsvorrichtung ist beispielsweise in der nachveröffentlichten DE 10012345 beschrieben.
Es handelt sich hierbei um einen sogenannten "Curtain Coater", also eine Vorhangs-Auftragsvorrichtung, mit welcher das Auftragsmedium im wesentlichen der Schwerkraft folgend, aus einer Abgabedüse auf die zu beschichtende Oberfläche gelangt.Another generic application device is, for example, in the post-published DE 10012345 described.
This is a so-called "curtain coater", that is to say a curtain application device with which the application medium essentially follows the force of gravity, from a dispensing nozzle onto the surface to be coated.

Beide Typen der Auftragsvorrichtungen besitzen ein Verteilrohr für das Auftragsmedium. Vom Verteilrohr aus gelangt das Medium über Durchtrittsöffnungen in einen Zufuhrspalt und von da aus in den, die Auftragsdüse bildenden Dosierspalt, aus dem das Medium anschließend austritt. Der Dosierspalt wird dabei von zwei Düsenlippen gebildet. Durch Verstellung einer der Lippen oder auch beider Lippen kann die Austrittsweite variiert werden.Both types of application devices have a distributor tube for the application medium. From the distributor tube, the medium passes through passage openings into a feed gap and from there into the metering gap forming the application nozzle, from which the medium then emerges. The metering gap is formed by two die lips. By adjusting one of the lips or both lips, the outlet width can be varied.

Beim direkten Auftrag des Mediums läuft eine Materialbahn an der Abgabedüse vorbei und wird direkt mit dem Medium beaufschlagt.When directly applying the medium, a material web runs past the dispensing nozzle and is exposed directly to the medium.

Die Materialbahn läuft dabei meistens über eine Stützfläche, beispielsweise eine Stützwalze.The material web usually runs over a support surface, for example a support roller.

Beim indirekten Auftragen des Mediums wird das Auftragsmedium zunächst auf die Oberfläche eines Gegenelementes (z. B. eine Auftragswalze oder ein endloses umlaufendes Band) aufgebracht, um von dort in einem Nip, durch den die Materialbahn hindurchläuft, vom Gegenelement auf die Materialbahn übertragen zu werden.In the indirect application of the medium, the application medium is first applied to the surface of a counter element (eg an applicator roll or an endless circulating belt) in order to be transferred from the counter element to the material web in a nip through which the material web passes ,

Diejenige der beiden, den Dosierspalt bildenden Lippen, die auf der Seite des Dosierspaltes liegt, auf der die Materialbahn auf die Auftragsvorrichtung zuläuft, wird als zulaufseitige Lippe bezeichnet. Entsprechend wird diejenige Lippe, die auf der Seite des Dosierspaltes liegt, auf der die Materialbahn von der Auftragsvorrichtung wegläuft, als ablaufseitige Lippe bezeichnet.The one of the two lips forming the metering gap, which lies on the side of the metering gap on which the material web runs onto the applicator, is referred to as the inlet-side lip. Accordingly, that lip which lies on the side of the metering gap on which the material web runs away from the application device is referred to as the outlet-side lip.

All diese genannten Bauteile sind maschinenbreit (also über die gesamte Breite der Maschine zur Herstellung und/oder Veredelung der Papier- oder Kartonbahn reichend) ausgeführt. Diese Bauteile sind im wesentlichen an die Breite der zu behandelnden Materialbahn angepasst, wobei gegenwärtig eine Breite von ca. 10 m und mehr keine Seltenheit ist. Hinzu kommt, dass bei den immer höher geforderten Maschinengeschwindigkeiten ein gleichmäßiges Auftragen des Mediums sich zunehmend schwieriger gestalten lässt. Außerdem neigen derartig langgestreckte Bauteile zu Durchbiegungen.All of these components are machine-wide (ie over the entire width of the machine for producing and / or finishing the paper or board web reaching) executed. These components are adapted substantially to the width of the material web to be treated, and currently a width of about 10 m and more is not uncommon. In addition, with the ever-increasing machine speeds, uniform application of the medium can be made increasingly difficult. In addition, such elongate components tend to deflections.

Mit derartigen Düsen-Auftragsvorrichtungen sind gute Auftragsergebnisse erreichbar. Die Auftragsvorrichtungen bzw. deren Düsen haben jedoch den Nachteil, dass sie sehr empfindlich gegenüber Verstopfungen am Abgabebereich des maschinenbreiten Dosierspaltes sind, wobei dieser Spalt nur eine sehr geringe Öffnungsweite von wenigen Millimetern, insbesondere sogar nur ca. 0,8 mm, besitzt.With such nozzle applicators good order results are achievable. However, the applicators or their nozzles have the disadvantage that they are very sensitive to blockages at the delivery area of the machine-wide metering gap, said gap has only a very small opening width of a few millimeters, in particular even only about 0.8 mm.

Im Laufe der Zeit können sich deshalb kleine Partikel, wie Verunreinigungen und Teilchen des meist bis zu 60°C warmen bis heißen Auftragsmediums an den mediumsführenden Seiten des Dosierspaltes festsetzen und verhärten, so dass der Auftrag über die gesamte Breite der Materialbahn hinweg nicht mehr gleichmäßig genug erfolgt und wodurch die Auftragsqualität sinkt.Over time, therefore, small particles, such as impurities and particles of the usually up to 60 ° C warm to hot application medium to the mediumsführenden Fix the sides of the dosing gap and harden, so that the application does not proceed evenly over the entire width of the material web and as a result the order quality decreases.

Deshalb sind sehr aufwändige Reinigungsmaßnahmen notwendig, um die Ablagerungen ("Anbackungen ") mechanisch oder mit hydraulischen Mitteln direkt zu entfernen. Oftmals muss dazu sogar die Maschine abgestellt werden, was eine erhebliche Einschränkung der Maschinenverfügbarkeit, Produktionsausfall und hohe Kosten verursacht.Therefore, very complex cleaning measures are necessary to remove the deposits ("caking") mechanically or by hydraulic means directly. Often even the machine must be shut down, which causes a significant restriction of machine availability, production loss and high costs.

Teilweise wird auch versucht, diese Bereiche von außen zu kühlen. Diese Maßnahme bringt allerdings keinen Erfolg, da die Kühlwirkung für den kritischen Bereich nicht ausreichend ist.Partly it is also trying to cool these areas from the outside. However, this measure does not succeed because the cooling effect is not sufficient for the critical area.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Auftragsvorrichtung weiter zu entwickeln, bei der zum Einen das Festsetzen von Partikeln am Abgabebereich der Auftragsdüse und zum Anderen eine thermische Durchbiegung von Bauteilen der Auftragsvorrichtung vermeidbar, zumindest aber minimierbar ist.The invention is therefore based on the object to further develop an applicator device, on the one hand, the setting of particles at the delivery area of the application nozzle and on the other hand, a thermal deflection of components of the applicator is avoidable, but at least minimized.

Erfindungsgemäß werden beide Aufgaben dadurch gelöst, indem in wenigstens eine der beiden Düsenlippen der Auftragsvorrichtung jeweils wenigstens ein, von einem Fluid durchströmter Temperierkanal integriert ist wobei der Temperierkanal (11,12) zur freien Umgebung hin mit einem dünnwandigen Bauteil (14,15) verschlossen ist und das Bauteil (14,15) eine Wandstärke (W1) von 0,1-3 mm aufweist. Als Temperierfluid dient Wasser oder auch Luft.According to the invention, both objects are achieved by integrating in each case at least one temperature-flow channel through which a fluid flows in at least one of the two nozzle lips of the application device, wherein the temperature-control channel (11, 12) is closed to the free environment with a thin-walled component (14, 15) and the component (14,15) has a wall thickness (W1) of 0.1-3 mm. As a tempering fluid is water or air.

Damit ist es mit ein- und derselben Vorrichtung auf einfache Weise möglich, entweder die erste Aufgabe (Vermeidung oder Verminderung von Ablagerungen und Anbackungen von Partikeln in den kritischen Bereichen der Auftragsdüse) mit einem Kühlfluid oder auch gewünschtenfalls die zweite Aufgabe (Verminderung oder Verhinderung der thermischen Durchbiegung der für das Auftragsergebnis zuständigen Bauteile der Auftragsvorrichtung) mit einem an die Temperatur des Auftragsmediums angepassten Fluides zu lösen.Thus, it is possible with one and the same device in a simple manner, either the first task (avoidance or reduction of deposits and caking of particles in the critical areas of the application nozzle) with a cooling fluid or even if desired, the second task (reduction or prevention of thermal Deflection of the components of the application device responsible for the order result) with a fluid adapted to the temperature of the application medium.

Das Auftragsmedium ist in der Regel bis zu ca. 60°C warm, wodurch sich die Auftragsvorrichtung, insbesondere die Düsenlippen mit dem Dosierspalt erwärmen.The application medium is usually up to about 60 ° C warm, causing the application device, in particular the nozzle lips to heat with the metering gap.

Die Erfinder haben erkannt, dass mit einem kühlen oder gekühlten Fluid ein Temperaturunterschied erzeugbar ist zwischen Außenflächen und Innenflächen der Düsenlippen. Dadurch kommt eine Kondensatbildung an den mediumsführenden Flächen des Dosierspaltes zustande, wobei mit diesem gebildeten Kondensat das "Festbacken" von Partikeln verhindert, zumindest aber erheblich vermindert wird.The inventors have recognized that with a cool or cooled fluid, a temperature difference can be generated between outer surfaces and inner surfaces of the nozzle lips. As a result, a condensation on the medium-guiding surfaces of the metering is achieved, with this formed condensate prevents the "caking" of particles, but at least significantly reduced.

Die Vorrichtung arbeitet damit nahezu selbstreinigend, ohne dass Maschinenabschaltungen notwendig sind und selbst bei längerer Betriebspause die Auftragsvorrichtung sofort wieder einsatzbereit ist. Fehlstellen in der Auftragsschicht werden vermieden.The device thus works almost self-cleaning, without machine shutdowns are necessary and even with prolonged downtime the applicator is immediately ready for use again. Defects in the order layer are avoided.

Wird ein an die Temperatur des Auftragsmediums angepasstes Fluid verwendet, so wird damit die thermische Durchbiegung minimiert.If a fluid adapted to the temperature of the application medium is used, then the thermal deflection is minimized.

Die Wahl von kühlem oder erwärmten Fluid hängt somit davon ab, welche Aufgabe man vorrangig lösen will.The choice of cool or heated fluid thus depends on which task you want to solve priority.

Besonders vorteilhaft ist es, wenn der wenigstens eine Temperierkanal in die unmittelbare Nähe des Düsenendes, also am auslaufseitigen Ende bzw. dem Abgabebereich der Vorrichtung positioniert ist, da dieser Bereich den kritischen Bereich für die "Anbackungen" darstellt.It is particularly advantageous if the at least one tempering channel is positioned in the immediate vicinity of the nozzle end, ie at the outlet end or the dispensing area of the device, since this area represents the critical area for the "caking".

In vorteilhafter Ausbildung der Erfindung ist vorgesehen, dass der wenigstens eine Temperierkanal an der zur freien Umgebung hin gerichteten Seite der Düsenlippe (-Lippen) angeordnet ist, wobei die Wandstärke der Düsenlippe im Bereich des Temperierkanals auf der zur freien Umgebung hin weisenden Seite geringer ist, als auf der Seite, die vom Medium berührt ist.In an advantageous embodiment of the invention, it is provided that the at least one temperature control channel is arranged on the side of the nozzle lip (lips) directed towards the free environment, the wall thickness of the nozzle lip being smaller in the region of the temperature control channel on the side facing the free environment, as on the Page touched by the medium.

Das hat den Vorteil, dass die jeweilige Düsenlippe sich in diesem Abschnitt nur unwesentlich thermisch verformen kann.This has the advantage that the respective nozzle lip can deform only insignificantly in this section thermally.

Zweckmäßig ist es, wenn dieser äußere Wandungsabschnitt der Düsenlippe ein dünnwandiges Bauteil bildet, welches zudem den Temperierkanal nach außen hin abdichtet. Das Bauteil, beispielsweise ein Blechstreifen, braucht nur eine Stärke von 0,1 bis 3 mm, vorzugsweise 0,2 bis 1 mm, aufzuweisen.It is expedient if this outer wall portion of the nozzle lip forms a thin-walled component, which also seals the tempering channel to the outside. The component, for example a metal strip, only needs to have a thickness of 0.1 to 3 mm, preferably 0.2 to 1 mm.

Die Metallteile, das heißt Düsenlippe und Blechstreifen, werden mittels Laserschweißen oder durch Einkleben oder durch Löten miteinander verbunden. Diese Technologie ermöglicht eine hochpräzise und dichte Verbindung. Außerdem wird damit ein ungewolltes Verziehen der Düsenlippen vermieden.The metal parts, that is, the nozzle lip and the metal strip, are connected to each other by laser welding or by gluing or by soldering. This technology enables a high-precision and tight connection. In addition, an unwanted distortion of the die lips is avoided.

Weitere Ausgestaltungsmerkmale ergeben sich aus weiteren Unteransprüchen.Further design features result from further subclaims.

Die erfindungsgemäße Vorrichtung ist konstruktiv einfach aufgebaut. Sie benötigt außer Fluidzuführungen, die ohnehin an Maschinen zur Herstellung oder Veredelung einer Materialbahn, insbesondere Papier- oder Kartonbahn, beispielweise zur Kühlung von Rinnen und /oder Wänden vorhanden sind, keine extra Bauteile.The device according to the invention is structurally simple. It requires except fluid supplies, which are anyway available on machines for producing or finishing a material web, in particular paper or board web, for example, for cooling gutters and / or walls, no extra components.

Eine entsprechende Abzweigung der Fluidzuleitung lässt sich auf einfache Weise bewerkstelligen.A corresponding branch of the fluid supply line can be accomplished in a simple manner.

Bestehende Düsenauftragsvorrichtungen, wie Freistrahldüsen oder Vorhangdüsen-Vorrichtungen lassen sich mit den erfindungsgemäß ausgestalteten, temperierbaren Düsenlippen in einfacher Weise umrüsten, wenn die Tragkonstruktion der Auftragsvorrichtung und die besagten Düsenlippen getrennte Bauteile sind.Existing nozzle application devices, such as free-jet nozzles or curtain nozzle devices, can easily be converted with the temperature-adjustable nozzle lips designed according to the invention if the support structure of the application device and the said nozzle lips are separate components.

Nachfolgend soll die Erfindung anhand eines Ausführungsbeispieles näher erläutert werden.The invention will be explained in more detail with reference to an embodiment.

Es zeigen:

Figur 1:
eine schematisierte Gesamt- Querschnittsdarstellung der erfindungsgemäßen Auftragsvorrichtung in Form einer Freistrahldüse.
Figur 2:
eine zweite Ausführungsvariante der erfindungsgemäßen Düsenlippen in Detaildarstellung.
Figur 3:
eine stark schematisierte Querschnittsdarstellung der erfindungsgemäßen Auftragsvorrichtung in Form einer Vorhang-Auftragsdüse.
Figur 4:
eine dritte Ausführungsvariante der erfindungsgemäßen Düsenlippen in Detaildarstellung.
Show it:
FIG. 1:
a schematic overall cross-sectional view of the applicator device according to the invention in the form of a free-jet nozzle.
FIG. 2:
a second embodiment of the nozzle lips of the invention in detail.
FIG. 3:
a highly schematic cross-sectional view of the applicator device according to the invention in the form of a curtain application nozzle.
FIG. 4:
a third embodiment of the nozzle lips of the invention in detail.

In den Figuren wurden für gleiche Bauteile gleiche Bezugszeichen gewählt.In the figures, the same reference numerals have been selected for the same components.

Wie aus der Figur 1 hervorgeht, umfasst die Auftragsvorrichtung zur Beschichtung einer laufenden Papierbahn B eine Tragkonstruktion bzw. Tragbalken 1, der sich über die gesamte Maschinenbreite (Breite der Papier- Herstellungs- oder Veredelungsmaschine, bzw. Breite der Auftragsvorrichtung) erstreckt.Like from the FIG. 1 As can be seen, the application device for coating a running paper web B comprises a support structure or support beam 1, which extends over the entire machine width (width of the paper making or finishing machine, or width of the applicator device).

Im gewählten Beispiel läuft die Papierbahn über eine Stützwalze W und soll direkt mit dem Auftragsmedium M beschichtet werden.In the example chosen, the paper web runs over a support roller W and is to be coated directly with the application medium M.

Der Tragbalken 1 enthält ein Verteilrohr 2 (sogenanntes Farbverteilrohr) für das aufzutragende flüssige oder pastöse Auftragsmedium M, wie pigmenthaltige Streichfarbe, Leim oder Stärke.The support beam 1 includes a distributor tube 2 (so-called Farbverteilrohr) for the applied liquid or pasty application medium M, such as pigment-containing coating color, glue or starch.

An dieses Verteilrohr 2 schließt sich ein Ausgleichsraum 3 an, der sich in einen Zufuhrkanal 4 fortsetzt. Der Zufuhrkanal 4 mündet in einen Dosierspalt 5, der zwischen einer zulaufseitigen Lippe 6 und einer ablaufseitigen Lippe 7 gebildet ist.At this distribution pipe 2, a compensation chamber 3 connects, which continues in a supply channel 4. The feed channel 4 opens into a metering gap 5 which is formed between an inlet-side lip 6 and an outlet-side lip 7.

Es soll an dieser Stelle nochmals erwähnt sein, dass die zulaufseitige Lippe 6 diejenige ist, an der die zu beschichtende Fläche (hier Papierbahn B) dem Dosierspalt 5 zuläuft. Sinngemäß ist demnach die ablaufseitige Lippe 7 diejenige, an der die Bahn abläuft.It should be mentioned again here that the inlet-side lip 6 is the one at which the surface to be coated (in this case paper web B) tapers to the metering gap 5. Accordingly, accordingly, the drain-side lip 7 is the one at which the web expires.

Aus Figur 1 ist erkennbar, dass das freie Ende der zulaufseitigen Lippe 6 sich über das freie Ende der ablaufseitigen Lippe 7 hinaus erstreckt und mit einer konkav gekrümmten Umlenkfläche 8 zwecks Entgasung des Auftragsmediums versehen ist.Out FIG. 1 It can be seen that the free end of the inlet-side lip 6 extends beyond the free end of the drain-side lip 7 and is provided with a concave curved deflection surface 8 for degassing of the application medium.

Besonders in diesem Bereich, das heißt hier im Abgabebereich der Düse bzw. der Düsenspitzen, wo das Auftragsmedium die Düse verlässt, kann sich im Laufe der Zeit ein Bestandteil an Auftragsmedium M oder sonstige Verunreinigungen absetzen und dort festbacken.Especially in this area, ie here in the discharge area of the nozzle or the nozzle tips, where the application medium leaves the nozzle, over time, a component of application medium M or other impurities may settle and cake there.

Um dies zu vermindern oder sogar gänzlich zu vermeiden, ist jeweils an der Spitze der Düsenlippe 6 und 7, also am auslaufseitigen Ende und an der von der mediumberührten Seite 5a und 5b des Dosierspaltes 5 abgewandten Seite 9 und 10 (d.h. der Außenseite 9 der Düsenlippe 6 und Außenseite 10 der Düsenlippe 7) wenigstens ein Temperierkanal 11 und 12 vorgesehen.In order to reduce this or even avoid it altogether, in each case at the tip of the nozzle lip 6 and 7, ie at the outlet end and at the side 9 and 10 facing away from the wetted side 5a and 5b of the metering gap 5 (ie the outside 9 of the nozzle lip 6 and outside 10 of the nozzle lip 7) at least one tempering channel 11 and 12 are provided.

In den Figuren 1 bis 4 ist jeweils nur ein Kanal in die entsprechende Düsenlippe integriert. Denkbar wäre aber auch die Anordnung einzelner Kammern oder parallel verlaufender Kanäle.In the FIGS. 1 to 4 In each case only one channel is integrated into the corresponding nozzle lip. However, it would also be conceivable to arrange individual chambers or parallel channels.

Besonders aus der Detaildarstellung in Figur 2 ist entnehmbar, dass die Wandstärke W1 der Düsenlippe 6 und 7 im Bereich des Temperierkanals 11 und 12 auf der zur freien Umgebung gerichteten Seite geringer ist, als die Wandstärke W2 der Düsenlippe 6 und 7, die zur mediumberührenden Seite 5a bzw. 5b hinzeigt.
Dadurch treten kaum Verformungen der Düsenenden auf.
Man hat in Versuchen festgestellt, dass dadurch Spaltänderungen (Düsenspalt 5) aufgrund von thermischen Spannungen der Düsenenden nur noch sehr minimal sind. Sie betragen beispielsweise bei einer Spaltweite von 0,8 mm wenige als 5%.Especially from the detailed representation in FIG. 2 can be removed that the wall thickness W 1 of the nozzle lip 6 and 7 in the region of the temperature control channel 11 and 12 on the Free side facing lower side than the wall thickness W 2 of the nozzle lip 6 and 7, which points to the medium-contacting side 5a and 5b.
As a result, hardly occur deformations of the nozzle ends.
It has been found in experiments that this gap changes (nozzle gap 5) due to thermal stresses of the nozzle ends are only very minimal. For example, they are less than 5% with a gap width of 0.8 mm.

Stellvertretend für alle Figuren sind nur in die Figur 2, Pfeile Z eingezeichnet, die die Zufuhr von einem Fluid, wie Wasser oder Luft, in den Temperierkanal 11 bzw. 12 angeben sollen.
Je nachdem ob das Fluid zur Verhinderung von unerwünschten Anbackungen (bevorzugte Anwendungsmöglichkeit) oder auch zur Verminderung der thermischen Durchbiegung der Vorrichtung eingesetzt werden soll, wird entschieden, ob Kühlfluid oder an die Temperatur des Auftragsmediums angepasstes Fluid zuzuführen ist.
Das jeweilig gewählte Fluid (Wasser oder Luft) kann in der Anfahrphase und/oder in der Betriebsphase der Vorrichtung durch die Kanäle 11,12 geleitet werden.Representing all figures are only in the FIG. 2 Plotted arrows Z, which should indicate the supply of a fluid, such as water or air, in the temperature control channel 11 and 12 respectively.
Depending on whether the fluid is to be used to prevent unwanted caking (preferred application) or to reduce the thermal deflection of the device, it is decided whether cooling fluid or adjusted to the temperature of the application medium fluid is supplied.
The respective selected fluid (water or air) can be passed through the channels 11,12 in the start-up phase and / or in the operating phase of the device.

Wird das Fluid zum Kühlen verwendet, sollte es dabei kälter als die Umgebung sein.If the fluid is used for cooling, it should be colder than the environment.

Die oben genannten Wandstärken W1 werden vorteilhaft gebildet von dünnen Bauteilen 14 und 15, so dass sich die gesamte vom Auftragsmedium, Trocknern usw. erwärmte Düsenlippe beim Durchfluss eines Kühlfluides durch die Temperierkanäle 11 und 12 thermisch nur unwesentlich verformen kann.The above-mentioned wall thicknesses W 1 are advantageously formed by thin components 14 and 15, so that the entire nozzle lip heated by the application medium, dryers, etc., can thermally deform only insignificantly when a cooling fluid flows through the temperature control channels 11 and 12.

Solche Verformungen würden ohne diese Ausgestaltung mit dünnwandigen Bauteilen 14,15 das Auftragsergebnis über die Breite der Materialbahn negativ beieinträchtigen. Mit zunehmender Breite der Auftragsvorrichtung würde dieser Negativeffekt noch verstärkt.
Ein weiterer wichtiger Gesichtspunkt der Erfindung ist somit: Je dünner also das Bauteil, bzw., die Wandstärke ist, desto geringer sind die thermischen Verformungen.Such deformations would negatively affect the order result over the width of the material web without this configuration with thin-walled components 14, 15. With increasing width of the applicator this negative effect would be exacerbated.
Another important aspect of the invention is thus: the thinner the component, or, the wall thickness, the lower the thermal deformations.

Aus der Darstellung gem. Figur 1 ist außerdem entnehmbar, dass das Bauteil 14 zweigeteilt ist und bei dieser gezeigten Einbauvariante aus einem waagerechten Schenkel 14a und einem senkrechten Schenkel 14b besteht. Der Schenkel 14b dient zugleich als Angriffsstelle für eine an sich bekannte Verstellvorrichtung 16, mit welcher der Abstand der zulaufseitige Lippe 6 zur ablaufseitigen Lippe 7 und damit die Weite des Dosierspaltes 5 einstellbar und veränderbar ist.From the representation acc. FIG. 1 is also removable, that the component 14 is divided into two parts and in this installation variant shown consists of a horizontal leg 14a and a vertical leg 14b. The leg 14b also serves as a point of attack for a known adjusting device 16, with which the distance of the inlet-side lip 6 to the outlet-side lip 7 and thus the width of the metering 5 is adjustable and variable.

Selbstverständlich kann das Bauteil 14 aber auch einstückig ausgebildet sein, wie in Figur 2 bis 4 dargestellt ist.Of course, the component 14 may also be integrally formed, as in FIGS. 2 to 4 is shown.

Das Verschließen des Temperierkanals 11, 12 mit den Bauteilen 14,15 erfolgt hier im Beispiel mit einem dünnen Blechstreifen von 0,7 mm Stärke.
Die Verbindung mit dem metallischen Bauteil der Düsenlippe 6, 7 erfolgt hochpräzis. Dafür ist als Beispiel ein Laserschweißverfahren, insbesondere mit einem Hochleistungs-Diodenlaser im Leistungsbereich von 1,2 bis 3,0 Kilowatt vorgesehen. Bei einer derartig ausgeführten Schweißnaht besteht keine Gefahr des Wärme-Verzuges der Düsenlippe.The closing of the tempering channel 11, 12 with the components 14,15 takes place here in the example with a thin sheet metal strip of 0.7 mm thickness.
The connection with the metallic component of the die lip 6, 7 takes place with high precision. As an example, a laser welding process, in particular with a high-power diode laser in the power range of 1.2 to 3.0 kilowatts is provided. With such a weld executed there is no risk of heat distortion of the nozzle lip.

Die Länge der beiden Düsenlippen 6 und 7 kann gleich lang (siehe Figur 3 und 4) oder auch derart ausgebildet sein, indem die zulaufseitige Lippe 6 - wie Figur 1 und 2 zeigt - sich über das freie Ende der ablaufseitigen Lippe 7 hinaus erstreckt.The length of the two die lips 6 and 7 can be the same length (see FIGS. 3 and 4 ) or also be formed by the inlet-side lip 6 - like FIG. 1 and 2 shows - extends beyond the free end of the drain-side lip 7 addition.

In der Figur 3 ist eine Auftragsvorrichtung zur Vorhangbeschichtung (Curtain Coating) dargestellt, die im wesentlichen gleich wie die Vorrichtung gem. Figur 1 aufgebaut ist und deshalb mit denselben Bezugszeichen versehen ist.In the FIG. 3 an applicator for curtain coating (Curtain Coating) is shown, which is essentially the same as the device. FIG. 1 is constructed and therefore provided with the same reference numerals.

Die Düsenlippen 6 und 7 mit Temperierkanälen 11 und 12 sowie dünnen Außenwänden 14 und 15 sind hierbei senkrecht nach unten weisend angeordnet und sind gleichlang ausgebildet.
Der zwischen den Lippen 6 und 7 bestehende Dosierspalt 5 gibt im gewählten Beispiel das Auftragsmedium nach unten, direkt auf die Materialbahn B (wie in Figur 3 gezeigt), ab, wobei das Medium M unter Einfluss der Schwerkraft aus der Düse abfließt. The nozzle lips 6 and 7 with tempering channels 11 and 12 and thin outer walls 14 and 15 are in this case arranged pointing vertically downwards and are formed the same length.
The existing between the lips 6 and 7 metering 5 in the example chosen, the application medium down, directly to the web B (as in FIG. 3 shown), wherein the medium M flows under the influence of gravity from the nozzle.

Claims (8)

  1. Assembly for the direct or indirect application of a liquid or pasty medium (M) to a moving web, in particular of paper or board, having a metering gap (5) which is formed as an application nozzle between a lip (6) on the incoming side and a lip (7) on the outgoing side, characterized in that
    in at least one of the nozzle lips (6, 7) there is in each case integrated at least one temperature control duct (11, 12) through which a fluid flows, the temperature control duct (11, 12) being closed off from the free surroundings by a thin-walled component (14, 15), and the component (14, 15) having a wall thickness (W1) of 0.1 - 3 mm.
  2. Assembly according to Claim 1, characterized in that the temperature control duct (11, 12) is arranged at the end of the metering gap (5) on the outlet side and on the side (9, 10) of the nozzle lips (6, 7) which faces away from the side (5a, 5b) of the metering gap (5) touched by the medium.
  3. Assembly according to Claim 1 and 2, characterized in that the wall thickness (W1) of the two nozzle lips (6, 7) in the region of the respective temperature control duct (11, 12) is lower on the side (9, 10) pointing towards the free surroundings than that wall thickness (W2) towards the side (5a, 5b) of the metering gap (5) touched by the medium.
  4. Assembly according to Claim 1, characterized in that the component (14, 15) has a wall thickness (W1) of 0.2 to 1 mm.
  5. Assembly according to Claim 1 and 4, characterized in that the component (14, 15) can be joined highly precisely to the nozzle lip (6, 7) by means of laser welding methods, preferably high-powered diode lasers in the power range from 0.2 to 3.0 kW, or by means of soldering or by means of adhesive bonding.
  6. Assembly according to Claim 1, characterized in that the temperature control fluid that can be chosen is cooled or heated water or cooled or heated air.
  7. Assembly according to one or more of the preceding Claims 1 to 6, characterized by nozzle lips (6, 7) which form a free jet nozzle which discharges the application medium (M) under pressure.
  8. Assembly according to one or more of the preceding Claims 1 to 6, characterized by nozzle lips (6, 7) which form a nozzle for curtain coating, the curtain nozzle discharging the application medium (M) substantially under the influence of the force of gravity.
EP02732368A 2001-04-12 2002-03-30 Applicator Expired - Lifetime EP1392926B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10118631A DE10118631A1 (en) 2001-04-12 2001-04-12 Paper machine paste application jet has temperature regulation channels incorporated in parallel lips
DE10118631 2001-04-12
PCT/DE2002/001179 WO2002083324A2 (en) 2001-04-12 2002-03-30 Applicator

Publications (2)

Publication Number Publication Date
EP1392926A2 EP1392926A2 (en) 2004-03-03
EP1392926B1 true EP1392926B1 (en) 2010-03-03

Family

ID=7681610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02732368A Expired - Lifetime EP1392926B1 (en) 2001-04-12 2002-03-30 Applicator

Country Status (6)

Country Link
US (2) US6902621B2 (en)
EP (1) EP1392926B1 (en)
JP (1) JP2004524966A (en)
AT (1) ATE459754T1 (en)
DE (3) DE10118631A1 (en)
WO (1) WO2002083324A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007056121B3 (en) * 2007-11-15 2008-09-25 Lindauer Dornier Gmbh Flat sheet die for application of thermoplastic coating material on material web, has one structure locked in region of nozzle channel for passage of material, when structure is brought into contact with interior of one nozzle body
WO2016023791A1 (en) 2014-08-15 2016-02-18 Voith Patent Gmbh Coater
DE102015118084A1 (en) * 2015-10-23 2017-04-27 Kugler-Womako Gmbh Apparatus for applying a viscous or liquid adhesive in the heated state
DE102016209336B4 (en) * 2016-05-30 2021-08-05 Voith Patent Gmbh Curtain applicator
EP3446792A1 (en) * 2017-08-22 2019-02-27 The Procter & Gamble Company Method and apparatus for application of superabsorbent immobiliser
US10550520B2 (en) 2018-04-05 2020-02-04 Gl&V Canada Inc. Method with a horizontal jet applicator for a paper machine wet end
DE102018110124A1 (en) * 2018-04-26 2019-10-31 Webasto SE A method for producing a drive cable holder for a vehicle roof and component for a vehicle roof
CN109759284B (en) * 2019-03-21 2023-12-15 泉州市大疆涂布设备有限公司 Coating machine coating die head convenient for quick and accurate replacement of gasket
DE102022105438A1 (en) 2022-03-08 2023-09-14 4BoxProducer.com Ltd. Method for operating a cold glue application device and device for applying cold glue

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB736747A (en) * 1953-08-31 1955-09-14 Arthur Ronald Trist Improvements in and relating to means for applying fluent coatings to web material at open width
US3151356A (en) * 1961-08-02 1964-10-06 Du Pont Extrusion die
US3302239A (en) * 1963-05-24 1967-02-07 Du Pont Die
NL6817090A (en) * 1968-11-29 1970-06-02
US3690297A (en) * 1969-07-22 1972-09-12 Blandin Paper Co Non-aqueous coating of webs
US3767346A (en) * 1971-07-22 1973-10-23 Fmc Corp Film extrusion die
FR2542636B1 (en) * 1983-03-14 1985-07-12 Saint Gobain Vitrage METHOD AND DEVICE FOR REGULARLY DISPENSING A POWDER SOLID ON A SUBSTRATE FOR COATING AND SUBSTRATE THEREOF
US4932353A (en) * 1987-12-18 1990-06-12 Mitsubishi Denki Kabushiki Kaisha Chemical coating apparatus
US6117237A (en) * 1994-01-04 2000-09-12 3M Innovative Properties Company Coater die enclosure system
EP0701022B1 (en) * 1994-09-09 2001-04-04 Voith Paper Patent GmbH Coating machine for applying directly or indirectly a fluid or pasty material onto a moving web
US5792317A (en) * 1996-02-07 1998-08-11 Gl&V-Paper Machine Group, Inc. Wet end starch application
DE19755625A1 (en) * 1997-12-15 1999-07-01 Jagenberg Papiertech Gmbh Slot nozzle for coating material webs, in particular paper or cardboard webs with pigment coating ink
DE10012345A1 (en) * 2000-03-14 2001-09-20 Voith Paper Patent Gmbh Web coating station, for paper or cardboard, comprises applicator with delivery jet, to form structured free-fall coating curtain to moving web surface, with adjustments to set relative alignments of applicator and web

Also Published As

Publication number Publication date
WO2002083324A2 (en) 2002-10-24
EP1392926A2 (en) 2004-03-03
DE20122834U1 (en) 2008-03-27
US20050155546A1 (en) 2005-07-21
DE10118631A1 (en) 2002-10-17
US20040074442A1 (en) 2004-04-22
US7279043B2 (en) 2007-10-09
DE50214254D1 (en) 2010-04-15
WO2002083324A3 (en) 2003-05-08
US6902621B2 (en) 2005-06-07
JP2004524966A (en) 2004-08-19
ATE459754T1 (en) 2010-03-15

Similar Documents

Publication Publication Date Title
EP0706592B1 (en) Process and device for producing paper webs coated on both sides
EP1270810B1 (en) Coating device
EP1040227B1 (en) Slit nozzle for coating strips of material, especially paper or board strips, with a pigment coating
DE102022105518B4 (en) Application nozzle, application mechanism and process
DE102022105510B4 (en) Application nozzle, application mechanism and process
EP1392926B1 (en) Applicator
EP3842591A1 (en) Device for applying an applied medium
DE202017100655U1 (en) Apparatus for treating fibrous webs
EP0781885A1 (en) Coating mechanism for directly of indirectly applying a liquid or pasty medium onto a moving web
EP3464724A1 (en) Curtain applicator
EP0677613B1 (en) Apparatus for depositing at least one fluent material onto a moving web
DE112004001570B4 (en) Arrangement in a nozzle bar for a device for coating a fibrous web
DE4230241C2 (en) Commissioned work for coating webs of paper or cardboard
DE69807879T2 (en) DEVICE AND METHOD FOR COATING PANEL OR RAIL-SHAPED ARTICLES
DE10358220A1 (en) Curtain coating assembly for paper or carton web has jet discharge slit regulated by a linie of re-circulating ball screw adjustment mechanisms
DE19549085A1 (en) Applicator for direct or indirect application of a liquid or pasty medium to a running material web
EP2067531A2 (en) Edge guide
DE19524702C1 (en) Coating device for applying liq or paste-form media to paper or board
EP2017012A2 (en) Curtain coating machine
EP2156899A1 (en) Device for direct or indirect application of a fluid or paste application medium to a mobile material web
DE19710124A1 (en) Cooling=roll tempering process
EP1496155B1 (en) Device for applying directly or indirectly a liquid or pasty suspension onto paper or board webs
DE102005035317A1 (en) Method for directly applying layers of a liquid-to-pasty medium to a paper, cardboard or other fibrous strip comprises releasing the media separately from one another from chambers and combining to form a curtain
DE102005027831A1 (en) Coating of a moving paper, cardboard or other fibrous material web within a machine for producing fibrous material web, comprises spraying of coating medium in form of spraying jets or droplets to the fiber web using spray coater
DE102008054889A1 (en) Curtain coater for coating a moving substrate, comprises a curtain coating head arranged above the moving substrate and extending itself over the substrate, where the curtain coating head has a coating medium chamber with a supply opening

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20031112

AK Designated contracting states

Kind code of ref document: A2

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

RIN1 Information on inventor provided before grant (corrected)

Inventor name: FISCHER, FRANZ

Inventor name: KRAEGELOH, ECKART

Inventor name: HENNINGER, CHRISTOPH

Inventor name: SPEIDEL, PHILIPP

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VOITH PATENT GMBH

17Q First examination report despatched

Effective date: 20090213

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 50214254

Country of ref document: DE

Date of ref document: 20100415

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20100303

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

BERE Be: lapsed

Owner name: VOITH PATENT G.M.B.H.

Effective date: 20100331

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

Ref country code: MC

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

Effective date: 20100331

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100303

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100604

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100614

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100303

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100303

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

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

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100705

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100303

26N No opposition filed

Effective date: 20101206

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100603

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

Ref country code: BE

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

Effective date: 20100331

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

Ref country code: FR

Payment date: 20110404

Year of fee payment: 10

Ref country code: SE

Payment date: 20110314

Year of fee payment: 10

Ref country code: CH

Payment date: 20110324

Year of fee payment: 10

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

Ref country code: GB

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

Effective date: 20100603

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

Ref country code: LU

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

Effective date: 20100330

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

Ref country code: IT

Payment date: 20120328

Year of fee payment: 11

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

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

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100303

Ref country code: SE

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

Effective date: 20120331

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20121130

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

Ref country code: LI

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

Effective date: 20120331

Ref country code: CH

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

Effective date: 20120331

Ref country code: FR

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

Effective date: 20120402

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

Ref country code: DE

Payment date: 20130321

Year of fee payment: 12

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

Ref country code: AT

Payment date: 20130313

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50214254

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 459754

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140330

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50214254

Country of ref document: DE

Effective date: 20141001

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

Ref country code: DE

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

Effective date: 20141001

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

Ref country code: AT

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

Effective date: 20140330

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

Ref country code: IT

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

Effective date: 20140330

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

Ref country code: FI

Payment date: 20210322

Year of fee payment: 20

REG Reference to a national code

Ref country code: FI

Ref legal event code: MAE