EP0369441B1 - Coating device for webs - Google Patents

Coating device for webs Download PDF

Info

Publication number
EP0369441B1
EP0369441B1 EP89121212A EP89121212A EP0369441B1 EP 0369441 B1 EP0369441 B1 EP 0369441B1 EP 89121212 A EP89121212 A EP 89121212A EP 89121212 A EP89121212 A EP 89121212A EP 0369441 B1 EP0369441 B1 EP 0369441B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
slot
roller
coating material
box
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
EP89121212A
Other languages
German (de)
French (fr)
Other versions
EP0369441A3 (en
EP0369441A2 (en
Inventor
John Mladota
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.)
Bematec SA
Original Assignee
Bematec SA
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 Bematec SA filed Critical Bematec SA
Priority to AT89121212T priority Critical patent/ATE90596T1/en
Publication of EP0369441A2 publication Critical patent/EP0369441A2/en
Publication of EP0369441A3 publication Critical patent/EP0369441A3/en
Application granted granted Critical
Publication of EP0369441B1 publication Critical patent/EP0369441B1/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
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/18—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material only one side of the work coming into contact with the liquid or other fluent material

Definitions

  • the invention relates to a device for applying a thin layer of a coating material to a material web running over a counter-pressure roller, with a slit nozzle device which has a vertically standing nozzle box with an upper wide nozzle slot between an inlet and an outlet nozzle lip and a side-mounted on the nozzle box Has storage container for coating material (see DE-A-1 964 908).
  • the thickness of the applied layer is essentially determined by the distance between the running-off nozzle lip and the material web or the counter-pressure roller.
  • the invention has for its object to provide a coating device of the type described above, in which the layer thickness remains the same regardless of fluctuations in thickness of the material web and the current operating speed, without coating defects and edge thickening.
  • the object of the invention is achieved according to the invention with a device of the type described in the introduction in that the storage container is attached to the nozzle box and connected to it in such a way that the liquid level of the coating material in the storage container is the same as that in the nozzle box due to the effect of the communicating vessels, and that in the nozzle box under the nozzle slot a extending over the length of the nozzle box driven mass conveyor roller is provided, which is mounted eccentrically in a roller chamber on the way of the coating material, the level of the resting coating material below, preferably about 2 to 3 cm below the Exit of the nozzle slot is located.
  • a hydrodynamic liquid pressure against the counter-pressure roller or the material web to be coated is built up in the coating material, in particular by the rotation of the mass conveyor roller.
  • Sufficient coating material is supplied to the material web or counter-pressure roller to be coated at the lowest possible pressure.
  • the required layer thickness is set exclusively by the distance between the outgoing nozzle lip and the material web or the counter-pressure roller.
  • the running material web or counter-pressure roller takes coating material from the nozzle slot by adhesion and forms a pressure cushion between the running-off nozzle lip and the counter-pressure roller.
  • This pressure pad which naturally arises as a result of the speed and viscosity of the coating material, is maintained by the supply of coating material, but is not significantly influenced.
  • Outlet chamber extending over the length of the nozzle box and then a narrow feed slot to the wide nozzle slot are provided.
  • slides for selective nozzle slot covering are advantageously provided in the nozzle slot in the region of its two ends.
  • the coating gap formed from the running-off nozzle lip and the counter-pressure roller, should be a high-precision gap.
  • the counter-pressure roller is therefore advantageously a finely ground chromium-plated steel roller with a concentricity of about 2 to 3 ⁇ m, while the running-off nozzle lip is very straight with a linearity deviation of less than 1 ⁇ m over a length of 100 mm.
  • the incoming nozzle lip is expediently coated with an elastic material on the side facing the counter-pressure roller.
  • running-off nozzle lip and / or the incoming nozzle lip can advantageously be arranged interchangeably in the nozzle box.
  • a completely uniform coating of a material web running over the counter-pressure roller directly from the nozzle slot is only possible if the material web is very constant in thickness and practically without differences in thickness which influence the layer thickness. This is the case with, for example, calendered papers, various plastic films, biaxially oriented polypropylene films and the like.
  • An indirect coating will therefore have to be used for material webs with large thickness fluctuations, for example 7 to 9 ⁇ m in the web direction and short intervals. This applies particularly to thin coating materials, as these follow the unevenness of the material web.
  • the inertia of the mass has a balancing effect; the fluctuations in the coating are in any case smaller than the thickness fluctuations in the material web.
  • a pressure roller is advantageously provided which runs counter to or co-rotating with the counter-pressure roller, via which the material web is guided in contact with the counter-pressure roller, which is pre-coated by the slot nozzle device and operates as an application roller.
  • the contact pressure of the pressure roller on the counterpressure roller is expediently adjustable via adjustable stops.
  • the coating is first carried out very precisely on the counter-pressure roller.
  • the material web runs here over the pressure roller, where the pre-metered layer is taken over by the counter pressure roller in counter-rotation or idling on the material web.
  • the nozzle box is advantageously designed to be easily openable on a plane running through the vertical central longitudinal plane of the nozzle slot. This results in a significant simplification and ease of operation when cleaning the slot nozzle device when changing the coating material, in particular in connection with frequent batch changes.
  • the storage container and / or the nozzle box are expediently heatable.
  • FIG. 1 schematically shows a slot nozzle device 1 for applying a thin layer of coating material 2 directly onto a material web 4 running over a counter-pressure roller 3.
  • the slot nozzle device consists of a vertically standing nozzle box 5 and a storage container 6 for coating material 2 attached to the side of the nozzle box 5.
  • the nozzle box 5 has at its upper end a wide nozzle slot 7 between an incoming nozzle lip 8 and an outgoing nozzle lip 9.
  • the coating material 2 is washed directly onto the material web 4 through the wide nozzle slot 7.
  • the reservoir 6 is attached to the nozzle box 5 and connected to it in such a way that the liquid level of the coating material 2 in the reservoir 6 and in the nozzle box 5 is essentially the same due to the effect of the communicating vessels.
  • a driven mass conveyor roller 10 which extends over the length of the nozzle box 5.
  • the mass conveyor roller 10 is mounted eccentrically in a roller chamber 11 on the way of the coating material 2 from the nozzle box 5 to the nozzle slot 7.
  • the level of the resting coating material 2 is below, preferably 2 to 3 cm below the outlet of the nozzle slot 7.
  • the mass conveyor roller 10 is constructed in one or more sections and with two bearing rollers over one Tie rod held together. It can be pulled out axially as a whole from the nozzle box 5.
  • the rotation of the mass conveyor roller 10 builds up a hydrodynamic liquid pressure against the counter-pressure roller 3 or the material web 4 to be coated.
  • Sufficient coating material 2 is supplied to the material web 4 to be coated at the lowest possible pressure.
  • the required layer thickness is set exclusively by the distance between the running nozzle lip 9 and the material web 4 or the counter-pressure roller 3.
  • the running material web 4 takes coating material 2 from the nozzle slot 7 by adhesion and forms a pressure cushion between the running nozzle lip 9 and the counter-pressure roller 3. This pressure pad, which naturally arises as a result of the speed and the viscosity of the coating material 2, is maintained by the supply of coating material, but is not significantly influenced.
  • axially displaceable sliders 15 are provided in the nozzle slot 7 in the region of its two ends for selective nozzle slot covering, cf. Fig. 2 in particular. If these slides 15 are displaced to cover the nozzle slot in such a way that a narrower web of material 4 is coated, for example over half the length of the nozzle, the coating material builds up below the covered zones. However, since the mass conveyor roller 10 does not generate any appreciable pump pressure, the dynamic pressure remains very low and an edge build-up due to excess coating material 2 at the coating edges is completely eliminated.
  • the coating gap 16, formed from the running-off nozzle lip 9 and the counter-pressure roller 3, should be a high-precision gap.
  • the counter-pressure roller 3 is a finely ground chrome-plated steel roller with a concentricity of about 2 to 3 ⁇ m, while the running nozzle lip 9 is very straight with a linearity deviation of less than 1 ⁇ m over a length of 100 mm.
  • the incoming nozzle lip 8 can be coated with an elastic material 17 on the side facing the counter-pressure roller 3. This results in a very good seal of the coating material 2 in the area of the incoming nozzle lip 8.
  • the running-off nozzle lip 9 and / or the incoming nozzle lip 8 are advantageously designed such that that they can be arranged interchangeably in the nozzle box 5. These two nozzle lips 8 and 9 are even particularly advantageously interchangeably attached. If a very thin coating is now to be applied, either the direction of rotation of the counter-roller 3 can be reversed such that the incoming nozzle lip 8 coated with the elastic material 17 becomes the outgoing nozzle lip. The elastic material 17 can be pressed directly against the counter roller 3 and thus very precisely determines the thickness of the application of the very thin coating. On the other hand, the inlet nozzle lip 8 and the outlet nozzle lip 9 can also be exchanged for one another with the same direction of rotation of the counter-pressure roller 3 in order to achieve the same effect.
  • the counter-pressure roller 3 works here as an application roller, onto which the coating material 2 is applied in a pre-coating process in a metered manner through the slot nozzle device 1.
  • a pressure roller 18 is then provided here, via which the material web 4 is guided in contact with the metered, pre-coated counter-pressure roller 3. At the contact point, the coating material 2 is transferred uniformly onto the material web 4 by the counter-pressure roller 3.
  • the pressure roller 18 is driven in the opposite direction to the counter-pressure roller 3, but possibly also in the same direction.
  • the contact pressure of the pressure roller 18 against the counter-pressure roller 3 is advantageously adjustable via adjustable stops, not shown.
  • the nozzle box 5 is advantageously designed to be easily openable on a plane running through the vertical central longitudinal plane of the nozzle slot 7.
  • the part of the nozzle box 5 facing away from the storage container 6 can advantageously be pivoted away. This results in a significant simplification and ease of operation when cleaning the slot nozzle device 1 when changing the coating material 2, in particular in connection with frequent batch changes.
  • the storage container 6 and / or the nozzle box 5 can be designed to be heatable, which is particularly suitable when the application temperature of the coating material 2 is above room temperature.

Landscapes

  • Coating Apparatus (AREA)
  • Confectionery (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Bakery Products And Manufacturing Methods Therefor (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Abstract

A device for applying a thin layer of a coating material (2) onto a web (4) running over a counterpressure roller (3) by means of a slot nozzle device (1) has a vertical nozzle box (5) with an upper nozzle slot (7) between an incoming (8) and an outgoing nozzle lip (9), and a laterally built on reservoir (6) for coating material (2). In order to keep the layer thickness the same and without coating defects and marginal thick spots as a function of the rate of operation and thickness fluctuations in the web (2), the reservoir (6) is attached to the nozzle box (5) in such a way that the liquid level of the coating material (2) in the reservoir (6) and in the nozzle box (5) is essentially the same. Furthermore, it is expedient to provide in the nozzle box (5) on the path of the coating material a driven bulk transport roller (10) mounted eccentrically in a roller chamber (11). <IMAGE>

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Aufbringen einer dünnen Schicht eines Beschichtungsmaterials auf eine über eine Gegendruckwalze laufende Materialbahn, mit einer Schlitzdüseneinrichtung, die einen vertikal stehenden Düsenkasten mit einem oberen breiten Düsenschlitz zwischen einer einlaufenden und einer ablaufenden Düsenlippe und einen seitlich an dem Düsenkasten angebauten Vorratsbehälter für Beschichtungsmaterial aufweist (siehe die DE-A-1 964 908).The invention relates to a device for applying a thin layer of a coating material to a material web running over a counter-pressure roller, with a slit nozzle device which has a vertically standing nozzle box with an upper wide nozzle slot between an inlet and an outlet nozzle lip and a side-mounted on the nozzle box Has storage container for coating material (see DE-A-1 964 908).

Bei einer derartigen Beschichtungsvorrichtung wird die Dicke der aufgetragenen Schicht im wesentlichen durch den Abstand zwischen der ablaufenden Düsenlippe und der Materialbahn bzw. der Gegendruckwalze bestimmt.With such a coating device, the thickness of the applied layer is essentially determined by the distance between the running-off nozzle lip and the material web or the counter-pressure roller.

Der Erfindung liegt die Aufgabe zugrunde, eine Beschichtungsvorrichtung der eingangs beschriebenen Art zu schaffen, bei der die Schichtdicke unabhängig von Dickenschwankungen der Materialbahn und der augenblicklichen Betriebsgeschwindigkeit gleich bleibt, und zwar ohne Beschichtungsfehlstellen und Randverdickungen.The invention has for its object to provide a coating device of the type described above, in which the layer thickness remains the same regardless of fluctuations in thickness of the material web and the current operating speed, without coating defects and edge thickening.

Die Grundlage hierfür ist, daß zum einen die physikalischen Eigenschaften der Schicht bei Dickenschwankungen unterschiedlich werden, und daß zum anderen der Jahresverbrauch an Beschichtungsmaterial bei Schwankungen der Schichtdicke aus Gründen der Produktionsgarantie erheblich ansteigt.The basis for this is that, on the one hand, the physical properties of the layer become different with fluctuations in thickness and, on the other hand, that the annual consumption of coating material increases significantly with fluctuations in the layer thickness for reasons of production guarantee.

Die Aufgabe der Erfindung wird mit einer Vorrichtung der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß der Vorratsbehälter derart am Düsenkasten angebaut und mit diesem verbunden ist, daß das Flüssigkeitsniveau des Beschichtungsmaterials im Vorratsbehälter aufgrund der Wirkung miteinander kommunizierender Gefäße mit demjenigen im Düsenkasten gleich ist, und daß in dem Düsenkasten unter dem Düsenschlitz eine sich über die Länge des Düsenkastens erstreckende angetriebene Massenförderrolle vorgesehen ist, die exzentrisch in einer Rollenkammer auf dem Wege des Beschichtungsmaterials gelagert ist, wobei sich das Niveau des ruhenden Beschichtungsmaterials unterhalb, vorzugsweise etwa 2 bis 3 cm unterhalb des Austritts des Düsenschlitzes befindet.The object of the invention is achieved according to the invention with a device of the type described in the introduction in that the storage container is attached to the nozzle box and connected to it in such a way that the liquid level of the coating material in the storage container is the same as that in the nozzle box due to the effect of the communicating vessels, and that in the nozzle box under the nozzle slot a extending over the length of the nozzle box driven mass conveyor roller is provided, which is mounted eccentrically in a roller chamber on the way of the coating material, the level of the resting coating material below, preferably about 2 to 3 cm below the Exit of the nozzle slot is located.

Bei der erfindungsgemäßen Beschichtungsvorrichtung wird in dem Beschichtungsmaterial, insbesondere durch die Drehung der Massenförderrolle, ein hydrodynamischer Flüssigkeitsdruck gegen die Gegendruckwalze bzw. die zu beschichtende Materialbahn aufgebaut. Dabei wird der zu beschichtenden Materialbahn oder Gegendruckwalze ausreichend Beschichtungsmaterial bei möglichst geringem Druck zugeführt. Die erforderliche Schichtdicke wird ausschließlich durch den Abstand zwischen der ablaufenden Düsenlippe und der Materialbahn bzw. der Gegendruckwalze eingestellt.In the coating device according to the invention, a hydrodynamic liquid pressure against the counter-pressure roller or the material web to be coated is built up in the coating material, in particular by the rotation of the mass conveyor roller. Sufficient coating material is supplied to the material web or counter-pressure roller to be coated at the lowest possible pressure. The required layer thickness is set exclusively by the distance between the outgoing nozzle lip and the material web or the counter-pressure roller.

Langjährige Erfahrungen mit einer Vielzahl von Beschichtungsdüsen mit eingebauter Verdrängerpumpe haben gezeigt, daß Beschichtungsmaterial an Materialbahnen bzw. Gegendruckwalzen lediglich angeschwemmt, aber nicht gepumpt werden darf, da sich jeglicher Pumpdruck den Vorgängen im Beschichtungsspalt überlagert und bei geringsten geometrischen Abweichungen im Düsen- und Walzenspalt zu Schichtdickenschwankungen führt. Darüber hinaus entstanden bei zu geringem Druck Beschichtungsfehlstellen und bei zu hohem Druck Randaufbauten.Many years of experience with a large number of coating nozzles with built-in displacement pumps have shown that coating material on material webs or counter-pressure rollers may only be washed ashore, but not pumped, since any pump pressure is superimposed on the processes in the coating gap and, with the slightest geometrical deviations in the nozzle and roller gap, leads to fluctuations in the layer thickness. In addition, coating defects occurred when the pressure was too low and edge structures when the pressure was too high.

Besonders deutlich wurde dieser Zusammenhang bei Naturkautschukklebern, die mit verschiedenen Eisenoxiden gefüllt waren. Der von der Pumpe herrührende Überlagerungsdruck hatte zwei Effekte:

  • 1. Kautschuk und Eisenoxid spalteten sich, was auf einer transparenten Folie dunkle und helle Klebstofflinien ergab, und
  • 2. bei noch stärkerem Überlagerungsdruck erhielt die Beschichtungsoberfläche ein Fischgrätenmuster.
This connection became particularly clear with natural rubber adhesives that were filled with various iron oxides. The overlay pressure from the pump had two effects:
  • 1. Rubber and iron oxide split, resulting in dark and light glue lines on a transparent film, and
  • 2. With an even stronger overlay pressure, the coating surface received a herringbone pattern.

Mit der erfindungsgemäßen Vorrichtung nimmt die laufende Materialbahn bzw. Gegendruckwalze durch Adhäsion Beschichtungsmaterial aus dem Düsenschlitz mit und bildet ein Druckpolster zwischen der ablaufenden Düsenlippe und der Gegendruckwalze aus. Dieses infolge der Geschwindigkeit und der Viskosität des Beschichtungsmaterials natürlich entstehende Druckpolster wird durch die Zufuhr an Beschichtungsmasse aufrecht erhalten, aber nicht wesentlich beeinflußt.With the device according to the invention, the running material web or counter-pressure roller takes coating material from the nozzle slot by adhesion and forms a pressure cushion between the running-off nozzle lip and the counter-pressure roller. This pressure pad, which naturally arises as a result of the speed and viscosity of the coating material, is maintained by the supply of coating material, but is not significantly influenced.

Vorteilhaft sind über der Massenförderrolle eine sich über die Länge des Düsenkastens erstreckende Austrittskammer und daran anschließend ein schmaler Zufuhrschlitz zu dem breiten Düsenschlitz vorgesehen.Are advantageous over the mass conveyor role Outlet chamber extending over the length of the nozzle box and then a narrow feed slot to the wide nozzle slot are provided.

Um beliebige unterschiedliche Beschichtungsbreiten einstellen zu können, sind vorteilhaft in dem Düsenschlitz im Bereich dessen beider Enden axial verschiebbare Schieber zur selektiven Düsenschlitzabdeckung vorgesehen.In order to be able to set any desired different coating widths, slides for selective nozzle slot covering are advantageously provided in the nozzle slot in the region of its two ends.

Werden diese Schieber zur Düsenschlitzabdeckung derart verschoben, daß eine schmälere Materialbahn beschichtet wird, beispielsweise über die halbe Düsenlänge, so staut sich das Beschichtungsmaterial unterhalb der abgedeckten Zonen. Da die Massenförderrolle jedoch keinen nennenswerten Pumpdruck erzeugt, bleibt der Staudruck sehr gering und ein Randaufbau durch Beschichtungsmaterialüberschuß an den Beschichtungsrändern entfällt vollständig.If these slides are moved to cover the nozzle slot in such a way that a narrower web of material is coated, for example over half the length of the nozzle, the coating material jams below the covered zones. However, since the mass conveyor roller does not generate any appreciable pump pressure, the dynamic pressure remains very low and there is no need to build up an edge due to excess coating material at the coating edges.

Der Beschichtungsspalt, gebildet aus der ablaufenden Düsenlippe und der Gegendruckwalze, soll ein hoch präziser Spalt sein. Vorteilhaft ist daher die Gegendruckwalze eine feinst geschliffene verchromte Stahlwalze mit einer Rundlaufgenauigkeit von etwa 2 bis 3 um, während die ablaufende Düsenlippe sehr gerade mit einer Linearitätsabweichung von weniger als 1 um auf 100 mm Länge ausgebildet ist.The coating gap, formed from the running-off nozzle lip and the counter-pressure roller, should be a high-precision gap. The counter-pressure roller is therefore advantageously a finely ground chromium-plated steel roller with a concentricity of about 2 to 3 μm, while the running-off nozzle lip is very straight with a linearity deviation of less than 1 μm over a length of 100 mm.

Zweckmäßig ist die einlaufende Düsenlippe auf der der Gegendruckwalze zugekehrten Seite mit einem elastischen Material beschichtet.The incoming nozzle lip is expediently coated with an elastic material on the side facing the counter-pressure roller.

Weiter können vorteilhaft die ablaufende Düsenlippe und/oder die einlaufende Düsenlippe auswechselbar im Düsenkasten angeordnet sein.Furthermore, the running-off nozzle lip and / or the incoming nozzle lip can advantageously be arranged interchangeably in the nozzle box.

Eine völlig gleichmäßige Beschichtung einer über die Gegendruckwalze laufenden Materialbahn direkt aus dem Düsenschlitz ist nur dann möglich, wenn die Materialbahn in der Dicke sehr konstant und praktisch ohne die Schichtdicke beeinflussende Dickenunterschiede ist. Dies ist der Fall bei beispielsweise kalandrierten Papieren, verschiedenen Kunststoff-Folien, biaxial orientierten Polypropylenfolien und ähnlichen.A completely uniform coating of a material web running over the counter-pressure roller directly from the nozzle slot is only possible if the material web is very constant in thickness and practically without differences in thickness which influence the layer thickness. This is the case with, for example, calendered papers, various plastic films, biaxially oriented polypropylene films and the like.

Für Materialbahnen mit starken Dickenschwankungen, beispielsweise 7 bis 9 um in Bahnrichtung und kurzen Abständen wird daher eine indirekte Beschichtung zu verwenden sein. Dies gilt besonders bei dünnflüssigen Beschichtungsmaterialien, da diese den Unebenheiten der Materialbahn folgen. Bei Beschichtungsmaterialien mit höheren Viskositäten wirkt die Trägheit der Masse ausgleichend; die Schwankungen der Beschichtung sind in jedem Fall kleiner als die Dickenschwankungen der Materialbahn.An indirect coating will therefore have to be used for material webs with large thickness fluctuations, for example 7 to 9 μm in the web direction and short intervals. This applies particularly to thin coating materials, as these follow the unevenness of the material web. In the case of coating materials with higher viscosities, the inertia of the mass has a balancing effect; the fluctuations in the coating are in any case smaller than the thickness fluctuations in the material web.

Hierfür ist vorteilhaft eine zur Gegendruckwalze gegenläufig oder mitläufig angetriebene Anpreßwalze vorgesehen, über die die Materialbahn in Kontakt mit der durch die Schlitzdüseneinrichtung dosiert vorbeschichteten, als Auftragswalze arbeitenden Gegendruckwalze geführt ist.For this purpose, a pressure roller is advantageously provided which runs counter to or co-rotating with the counter-pressure roller, via which the material web is guided in contact with the counter-pressure roller, which is pre-coated by the slot nozzle device and operates as an application roller.

Zweckmäßig ist der Anpreßdruck der Anpreßwalze an die Gegendruckwalze über verstellbare Anschläge einstellbar.The contact pressure of the pressure roller on the counterpressure roller is expediently adjustable via adjustable stops.

Hier wird die Beschichtung zunächst unmittelbar auf die Gegendruckwalze sehr genau vorgenommen. Die Materialbahn läuft hier über die Anpreßwalze, wo die vordosierte Schicht von der Gegendruckwalze im Gegenlauf oder Mitlauf auf die Materialbahn übernommen wird.Here the coating is first carried out very precisely on the counter-pressure roller. The material web runs here over the pressure roller, where the pre-metered layer is taken over by the counter pressure roller in counter-rotation or idling on the material web.

Weiter ist der Düsenkasten vorteilhaft an eine durch die senkrechte Mittellängsebene des Düsenschlitzes verlaufende Ebene leicht öffenbar ausgebildet. Hiermit ergibt sich eine wesentliche Vereinfachung und Betriebsfreundlichkeit bei der Reinigung der Schlitzdüseneinrichtung bei Beschichtungsmaterialwechsel, insbesondere im Zusammenhang mit häufigem Chargenwechsel.Furthermore, the nozzle box is advantageously designed to be easily openable on a plane running through the vertical central longitudinal plane of the nozzle slot. This results in a significant simplification and ease of operation when cleaning the slot nozzle device when changing the coating material, in particular in connection with frequent batch changes.

Schließlich sind zweckmäßig der Vorratsbehälter und/oder der Düsenkasten beheizbar.Finally, the storage container and / or the nozzle box are expediently heatable.

Die Erfindung ist im folgenden an Ausführungsbeispielen und anhand der Zeichnungen näher erläutert. In den Zeichnungen zeigen:

Fig. 1
eine Teilstirnansicht einer erfindungsgemäßen Vorrichtung für direkte Beschichtung, teilweise im Schnitt,
Fig. 2
eine Teilseitenansicht der Vorrichtung nach Fig. 1, und
Fig. 3
eine Teilstirnansicht einer erfindungsgemäßen Vorrichtung für indirekte Beschichtung, teilweise im Schnitt.
The invention is explained below using exemplary embodiments and with reference to the drawings. The drawings show:
Fig. 1
2 shows a partial front view of a device for direct coating, partly in section,
Fig. 2
a partial side view of the device of FIG. 1, and
Fig. 3
a partial front view of an inventive device for indirect coating, partly in section.

Fig. 1 zeigt schematisch eine Schlitzdüseneinrichtung 1 zum Auftragen einer dünnen Schicht eines Beschichtungsmaterials 2 direkt auf eine über eine Gegendruckwalze 3 laufende Materialbahn 4. Die Schlitzdüseneinrichtung besteht aus einem vertikal stehenden Düsenkasten 5 und einem seitlich an dem Düsenkasten 5 angebauten Vorratsbehälter 6 für Beschichtungsmaterial 2. Der Düsenkasten 5 hat an seinem oberen Ende einen breiten Düsenschlitz 7 zwischen einer einlaufenden Düsenlippe 8 und einer ablaufenden Düsenlippe 9. Durch den breiten Düsenschlitz 7 wird das Beschichtungsmaterial 2 direkt auf die Materialbahn 4 angeschwemmt.1 schematically shows a slot nozzle device 1 for applying a thin layer of coating material 2 directly onto a material web 4 running over a counter-pressure roller 3. The slot nozzle device consists of a vertically standing nozzle box 5 and a storage container 6 for coating material 2 attached to the side of the nozzle box 5. The nozzle box 5 has at its upper end a wide nozzle slot 7 between an incoming nozzle lip 8 and an outgoing nozzle lip 9. The coating material 2 is washed directly onto the material web 4 through the wide nozzle slot 7.

Der Vorratsbehälter 6 ist derart an dem Düsenkasten 5 angebaut und mit diesem verbunden, daß das Flüssigkeitsniveau des Beschichtungsmaterials 2 im Vorratsbehälter 6 und im Düsenkasten 5 aufgrund der Wirkung miteinander kommunizierender Gefäße im wesentlichen gleich ist.The reservoir 6 is attached to the nozzle box 5 and connected to it in such a way that the liquid level of the coating material 2 in the reservoir 6 and in the nozzle box 5 is essentially the same due to the effect of the communicating vessels.

In dem Düsenkasten 5 ist unter dem Düsenschlitz 7 eine sich über die Länge des Düsenkastens 5 erstreckende angetriebene Massenförderrolle 10 vorgesehen. Die Massenförderrolle 10 ist exzentrisch in einer Rollenkammer 11 auf dem Wege des Beschichtungsmaterials 2 vom Düsenkasten 5 zum Düsenschlitz 7 gelagert. Das Niveau des ruhenden Beschichtungsmaterials 2 befindet sich unterhalb, vorzugsweise 2 bis 3 cm unterhalb des Austritts des Düsenschlitzes 7.Provided in the nozzle box 5 under the nozzle slot 7 is a driven mass conveyor roller 10 which extends over the length of the nozzle box 5. The mass conveyor roller 10 is mounted eccentrically in a roller chamber 11 on the way of the coating material 2 from the nozzle box 5 to the nozzle slot 7. The level of the resting coating material 2 is below, preferably 2 to 3 cm below the outlet of the nozzle slot 7.

Die Massenförderrolle 10 ist in einem oder mehreren Abschnitten aufgebaut und mit zwei Lagerrollen über eine Zugstange zusammengehalten. Sie ist als ganzes axial aus dem Düsenkasten 5 herausziehbar.The mass conveyor roller 10 is constructed in one or more sections and with two bearing rollers over one Tie rod held together. It can be pulled out axially as a whole from the nozzle box 5.

Unter der Massenförderrolle 10 bzw. Rollenkammer 11 ist eine sich über die Länge des Düsenkastens 5 erstreckende Eintrittskammer 12 vorgesehen. Über der Massenförderrolle 10 befindet sich eine über die Länge des Düsenkastens 5 erstreckende Austrittskammer 13 und daran anschließend ein schmaler Zufuhrschlitz 14 zu dem breiten Düsenschlitz 7.An inlet chamber 12, which extends over the length of the nozzle box 5, is provided under the mass conveyor roller 10 or roller chamber 11. Above the mass conveyor roller 10 there is an outlet chamber 13 which extends over the length of the nozzle box 5 and then a narrow feed slot 14 to the wide nozzle slot 7.

Durch die Drehung der Massenförderrolle 10 wird ein hydrodynamischer Flüssigkeitsdruck gegen die Gegendruckwalze 3 bzw. die zu beschichtende Materialbahn 4 aufgebaut. Dabei wird der zu beschichtenden Materialbahn 4 ausreichend Beschichtungsmaterial 2 bei möglichst geringem Druck zugeführt. Die erforderliche Schichtdicke wird ausschließlich durch den Abstand zwischen der ablaufenden Düsenlippe 9 und der Materialbahn 4 bzw. der Gegendruckwalze 3 eingestellt. Die laufende Materialbahn 4 nimmt durch Adhäsion Beschichtungsmaterial 2 aus dem Düsenschlitz 7 mit und bildet ein Druckpolster zwischen der ablaufenden Düsenlippe 9 und der Gegendruckwalze 3 aus. Dieses infolge der Geschwindigkeit und der Vikosität des Beschichtungsmaterials 2 natürlich entstehende Druckpolster wird durch die Zufuhr an Beschichtungsmasse aufrechterhalten, aber nicht wesentlich beeinflußt.The rotation of the mass conveyor roller 10 builds up a hydrodynamic liquid pressure against the counter-pressure roller 3 or the material web 4 to be coated. Sufficient coating material 2 is supplied to the material web 4 to be coated at the lowest possible pressure. The required layer thickness is set exclusively by the distance between the running nozzle lip 9 and the material web 4 or the counter-pressure roller 3. The running material web 4 takes coating material 2 from the nozzle slot 7 by adhesion and forms a pressure cushion between the running nozzle lip 9 and the counter-pressure roller 3. This pressure pad, which naturally arises as a result of the speed and the viscosity of the coating material 2, is maintained by the supply of coating material, but is not significantly influenced.

Eine Auswahl von mit der erfindungsgemäßen Vorrichtung verarbeitbaren Beschichtungsstoffen, deren Verarbeitungsparametern und der erzielten Endprodukte ist in der folgenden Tabelle 1 angegeben.

Figure imgb0001
A selection of coating materials which can be processed with the device according to the invention, their processing parameters and the end products obtained is given in Table 1 below.
Figure imgb0001

Um beliebige unterschiedliche Beschichtungsbreiten einstellen zu können, sind in dem Düsenschlitz 7 im Bereich dessen beider Enden axial verschiebbare Schieber 15 zur selektiven Düsenschlitzabdeckung vorgesehen, vgl. insbesondere Fig. 2. Werden diese Schieber 15 zur Düsenschlitzabdeckung derart verschoben, daß eine schmälere Materialbahn 4 beschichtet wird, beispielsweise über die halbe Düsenlänge, so staut sich das Beschichtungsmaterial unterhalb der abgedeckten Zonen. Da die Massenförderrolle 10 jedoch keinen nennenswerten Pumpdruck erzeugt, bleibt der Staudruck sehr gering und ein Randaufbau durch Überschuß an Beschichtungsmaterial 2 an den Beschichtungsrändern entfällt vollständig.In order to be able to set any different coating widths, axially displaceable sliders 15 are provided in the nozzle slot 7 in the region of its two ends for selective nozzle slot covering, cf. Fig. 2 in particular. If these slides 15 are displaced to cover the nozzle slot in such a way that a narrower web of material 4 is coated, for example over half the length of the nozzle, the coating material builds up below the covered zones. However, since the mass conveyor roller 10 does not generate any appreciable pump pressure, the dynamic pressure remains very low and an edge build-up due to excess coating material 2 at the coating edges is completely eliminated.

Der Beschichtungsspalt 16, gebildet aus der ablaufenden Düsenlippe 9 und der Gegendruckwalze 3, soll ein hochpräziser Spalt sein. Vorteilhaft ist daher die Gegendruckwalze 3 eine feinst geschliffene verchromte Stahlwalze mit einer Rundlaufgenauigkeit von etwa 2 bis 3 µm, während die ablaufende Düsenlippe 9 sehr gerade mit einer Linearitätsabweichung von weniger als 1 µm auf 100 mm Länge ausgebildet ist.The coating gap 16, formed from the running-off nozzle lip 9 and the counter-pressure roller 3, should be a high-precision gap. Advantageously, the counter-pressure roller 3 is a finely ground chrome-plated steel roller with a concentricity of about 2 to 3 μm, while the running nozzle lip 9 is very straight with a linearity deviation of less than 1 μm over a length of 100 mm.

Die einlaufende Düsenlippe 8 kann auf der der Gegendruckwalze 3 zugekehrten Seite mit einem elastischen Material 17 beschichtet sein. Damit ergibt sich eine sehr gute Abdichtung des Beschichtungsmaterials 2 im Bereich der einlaufenden Düsenlippe 8.The incoming nozzle lip 8 can be coated with an elastic material 17 on the side facing the counter-pressure roller 3. This results in a very good seal of the coating material 2 in the area of the incoming nozzle lip 8.

Weiter sind vorteilhaft die ablaufende Düsenlippe 9 und/oder die einlaufende Düsenlippe 8 derart ausgebildet, daß sie auswechselbar im Düsenkasten 5 angeordnet werden können. Besonders vorteilhaft sind diese beiden Düsenlippen 8 und 9 sogar gegenseitig auswechselbar angebracht. Soll nun eine sehr dünne Beschichtung aufgebracht werden, so läßt sich entweder die Drehrichtung der Gegenwalze 3 derart umkehren, daß die mit dem elastischen Material 17 beschichtete einlaufende Düsenlippe 8 zur ablaufenden Düsenlippe wird. Das elastische Material 17 kann direkt an die Gegenwalze 3 angepreßt werden und bestimmt damit sehr genau die Dicke des Auftrags der sehr dünnen Beschichtung. Andererseits können bei gleichbleibender Laufrichtung der Gegendruckwalze 3 auch die einlaufende Düsenlippe 8 und die ablaufende Düsenlippe 9 gegeneinander ausgetauscht werden, um dieselbe Wirkung zu erzielen.Furthermore, the running-off nozzle lip 9 and / or the incoming nozzle lip 8 are advantageously designed such that that they can be arranged interchangeably in the nozzle box 5. These two nozzle lips 8 and 9 are even particularly advantageously interchangeably attached. If a very thin coating is now to be applied, either the direction of rotation of the counter-roller 3 can be reversed such that the incoming nozzle lip 8 coated with the elastic material 17 becomes the outgoing nozzle lip. The elastic material 17 can be pressed directly against the counter roller 3 and thus very precisely determines the thickness of the application of the very thin coating. On the other hand, the inlet nozzle lip 8 and the outlet nozzle lip 9 can also be exchanged for one another with the same direction of rotation of the counter-pressure roller 3 in order to achieve the same effect.

Für Materialbahnen mit starken Dickenschwankungen, beispielsweise 7 bis 9 µm in Bahnrichtung und kurzen Abständen wird vorteilhaft eine sogenannte indirekte Beschichtung zu verwenden sein. Eine Vorrichtung hierfür ist in Fig. 3 schematisch dargestellt. Die Gegendruckwalze 3 arbeitet hier als Auftragswalze, auf die das Beschichtungsmaterial 2 direkt dosiert durch die Schlitzdüseneinrichtung 1 in einem Vorbeschichtungsvorgang aufgetragen wird. Hier ist dann eine Anpreßwalze 18 vorgesehen, über die die Materialbahn 4 in Kontakt mit der dosiert vorbeschichteten Gegendruckwalze 3 geführt ist. An der Kontaktstelle wird das Beschichtungsmaterial 2 von der Gegendruckwalze 3 gleichmäßig auf die Materialbahn 4 übernommen.For material webs with large fluctuations in thickness, for example 7 to 9 μm in the web direction and short intervals, a so-called indirect coating will advantageously be used. A device for this is shown schematically in FIG. 3. The counter-pressure roller 3 works here as an application roller, onto which the coating material 2 is applied in a pre-coating process in a metered manner through the slot nozzle device 1. A pressure roller 18 is then provided here, via which the material web 4 is guided in contact with the metered, pre-coated counter-pressure roller 3. At the contact point, the coating material 2 is transferred uniformly onto the material web 4 by the counter-pressure roller 3.

In den meisten Fällen wird die Anpreßwalze 18 gegenläufig zu der Gegendruckwalze 3 angetrieben, gegebenenfalls jedoch auch mitläufig. Der Anpreßdruck der Anpreßwalze 18 an die Gegendruckwalze 3 ist vorteilhaft über nicht dargestellte, verstellbare Anschläge einstellbar.In most cases, the pressure roller 18 is driven in the opposite direction to the counter-pressure roller 3, but possibly also in the same direction. The contact pressure of the pressure roller 18 against the counter-pressure roller 3 is advantageously adjustable via adjustable stops, not shown.

Der Düsenkasten 5 ist vorteilhaft an einer durch die senkrechte Mittellängsebene des Düsenschlitzes 7 verlaufenden Ebene leicht öffenbar ausgebildet. Dabei ist vorteilhaft der dem Vorratsbehälter 6 abgewandte Teil des Düsenkastens 5 abschwenkbar. Hiermit ergibt sich eine wesentliche Vereinfachung und Betriebsfreundlichkeit bei der Reinigung der Schlitzdüseneinrichtung 1 bei Wechsel des Beschichtungsmaterials 2, insbesondere im Zusammenhang mit häufigem Chargenwechsel.The nozzle box 5 is advantageously designed to be easily openable on a plane running through the vertical central longitudinal plane of the nozzle slot 7. The part of the nozzle box 5 facing away from the storage container 6 can advantageously be pivoted away. This results in a significant simplification and ease of operation when cleaning the slot nozzle device 1 when changing the coating material 2, in particular in connection with frequent batch changes.

Schließlich können der Vorratsbehälter 6 und/oder der Düsenkasten 5 beheizbar ausgebildet sein, was besonders bei über Raumtemperatur liegenden Auftragstemperaturen des Beschichtungsmaterials 2 in Frage kommt.Finally, the storage container 6 and / or the nozzle box 5 can be designed to be heatable, which is particularly suitable when the application temperature of the coating material 2 is above room temperature.

Claims (12)

  1. Apparatus for applying a thin layer of a coating material (2) to a web of material (4) running over a counterpressure roller (3), with a slot nozzle device (1) which comprises a vertical nozzle box (5) with a wide upper nozzle slot (7) between incoming (8) and outgoing (9) nozzle lips and a storage tank (6) for coating material (2) laterally attached to the nozzle box (5), characterised in that the storage tank (6) is attached to the nozzle box (5) and connected thereto in such a way that the liquid level of coating material (2) in the storage tank (6) is the same as that in the nozzle box (5) on account of the effect of vessels communicating with each other, and in that in the nozzle box (5) under the nozzle slot (7) is provided a driven continuous transport roller (10) which extends over the length of the nozzle box (5) and which is mounted eccentrically in a roller chamber (11) on the path of the coating material (2), wherein the level of the stationary coating material (2) is below the outlet of the nozzle slot (7).
  2. Apparatus according to claim 1, characterised in that the level of the stationary coating material (2) is about 2 to 3 cm below the outlet of the nozzle slot (7).
  3. Apparatus according to claim 2, characterised in that over the continuous transport roller (10) are provided an outlet chamber (13) extending over the length of the nozzle box (5) and, adjoining same, a narrow delivery slot (14) leading to the wide nozzle slot (7).
  4. Apparatus according to any of the preceding claims, characterised in that in the nozzle slot (7) in the region of both ends thereof are provided axially displaceable slides (15) for selectively covering the nozzle slot.
  5. Apparatus according to any of the preceding claims, characterized in that the counterpressure roller (3) is a very finely polished chromium-plated steel roller which runs true to about 2 to 3 µm.
  6. Apparatus according to claim 5, characterised in that the outgoing nozzle lip (9) is very straight with a linearity deviation of less than 1 µm over a length of 100 mm.
  7. Apparatus according to any of the preceding claims, characterised in that the incoming nozzle lip (8) is coated with a resilient material (17) on the side facing towards the counterpressure roller (3).
  8. Apparatus according to any of the preceding claims, characterised in that the outgoing nozzle lip (9) and/or the incoming nozzle lip (8) are arranged exchangeably in the nozzle box (5).
  9. Apparatus according to any of the preceding claims, characterised in that a contact pressure roller (18) is provided which is driven in the same or opposite direction to the counterpressure roller (3) and over which the web of material (4) is guided in contact with the counterpressure roller (3) which is precoated in measured quantities by the slot nozzle device (1) and which works as an applicator roller.
  10. Apparatus according to claim 9, characterised in that the contact pressure of the contact pressure roller (18) on the counterpressure roller (3) is variable by adjustable stops.
  11. Apparatus according to any of the preceding claims, characterised in that the nozzle box (5) is made easy to open in a plane passing through the vertical longitudinal centre plane of the nozzle slot (7).
  12. Apparatus according to any of the preceding claims, characterised in that the storage tank (6) and/or the nozzle box (5) are capable of being heated.
EP89121212A 1988-11-18 1989-11-16 Coating device for webs Expired - Lifetime EP0369441B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89121212T ATE90596T1 (en) 1988-11-18 1989-11-16 COATING DEVICE FOR MATERIAL WEBS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3839100 1988-11-18
DE3839100A DE3839100A1 (en) 1988-11-18 1988-11-18 COATING DEVICE FOR MATERIAL RAILS

Publications (3)

Publication Number Publication Date
EP0369441A2 EP0369441A2 (en) 1990-05-23
EP0369441A3 EP0369441A3 (en) 1991-01-23
EP0369441B1 true EP0369441B1 (en) 1993-06-16

Family

ID=6367464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89121212A Expired - Lifetime EP0369441B1 (en) 1988-11-18 1989-11-16 Coating device for webs

Country Status (10)

Country Link
US (1) US5033403A (en)
EP (1) EP0369441B1 (en)
JP (1) JPH0624665B2 (en)
AT (1) ATE90596T1 (en)
AU (1) AU623450B2 (en)
CA (1) CA2002844C (en)
DE (2) DE3839100A1 (en)
FI (1) FI105534B (en)
HK (1) HK8094A (en)
TW (1) TW202398B (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1241807B (en) 1990-10-17 1994-02-01 Perini Navi Spa EQUIPMENT FOR GLUING THE FINAL FLAP OF ROLLS OF TAPE MATERIAL
AU6122394A (en) * 1993-01-15 1994-08-15 Nordson Corporation System and method for applying a desired, protective finish to printed label stock
US5514416A (en) * 1994-02-08 1996-05-07 Minnesota Mining And Manufacturing Company Cross flow knife coater for applying a coating to a web
US5997645A (en) * 1995-05-24 1999-12-07 3M Innovative Properties Company Inserts for stripe coating
DE19716647A1 (en) * 1997-04-21 1998-10-22 Jagenberg Papiertech Gmbh Method and device for applying a pigment coating ink to a paper or cardboard web
DE29709673U1 (en) * 1997-06-04 1998-10-08 Eduard Küsters Maschinenfabrik GmbH & Co. KG, 47805 Krefeld Device for applying a fluid treatment agent to a web
DE29808981U1 (en) 1998-05-18 1999-09-30 Kuesters Eduard Maschf Device for applying a treatment agent to a running web
US7559990B2 (en) * 1998-05-19 2009-07-14 Eugene A Pankake Coating apparatus and method
US20090295098A1 (en) * 1999-05-18 2009-12-03 Pankake Eugene A Coating apparatus and method
US6372064B1 (en) 1999-12-13 2002-04-16 C. G. Bretting Manufacturing Company, Inc. Tail sealer apparatus and method
JP4839576B2 (en) * 2004-03-05 2011-12-21 Ｊｆｅスチール株式会社 Coating method for strips
DE102006017365A1 (en) 2006-04-11 2007-10-18 Khs Ag gluing
US8002927B2 (en) * 2006-06-23 2011-08-23 The Procter & Gamble Company Process for gluing the tail of a convolutely wound web material thereto
US20070298224A1 (en) * 2006-06-23 2007-12-27 The Procter & Gamble Company Convolutely wound web material having the tail adhered thereto
US7905194B2 (en) * 2006-06-23 2011-03-15 The Procter & Gamble Company Apparatus for gluing the tail of a convolutely wound web material thereto
TWI456105B (en) * 2011-04-15 2014-10-11 Ruentex Eng & Constr Co Ltd Construction and method for air exchanging

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA459538A (en) * 1949-09-06 Adolph Roehm William Web coating apparatus and method
DE804554C (en) * 1947-12-01 1951-04-26 Basf Ag Process for the production of thin layers from liquid substances
US2940418A (en) * 1959-03-27 1960-06-14 Black Clawson Co Paper machinery
US3424126A (en) * 1963-01-25 1969-01-28 Beloit Corp Air-knife coater
GB1072951A (en) * 1964-03-23 1967-06-21 Gevaert Photo Prod Nv Method and apparatus for coating liquid compositions onto webs of paper and other material
GB1194875A (en) * 1966-07-01 1970-06-17 Fuji Photo Film Co Ltd A Method of Applying a Coating Liquid
SE360408B (en) * 1968-12-30 1973-09-24 Waertsilae Oy Ab
US3645773A (en) * 1969-02-10 1972-02-29 Agfa Gevaert Ag Process for coating substrates in strip-form with photographic emulsion
GB1282265A (en) * 1970-01-19 1972-07-19 Gaf Corp Production of liquid films
IT1144645B (en) * 1981-09-01 1986-10-29 Rotomec Costr Mecc DEVICE FOR THE APPLICATION OF VISCOUS SUBSTANCES ON A MOVING TAPE MATERIAL
US4396648A (en) * 1982-02-08 1983-08-02 Consolidated Papers, Inc. Paper coating apparatus and method
AT374379B (en) * 1982-03-29 1984-04-10 Zimmer Johannes DEVICE FOR THE EVEN APPLICATION OF DETERMINABLE LIQUID AMOUNTS
US4491082A (en) * 1982-04-01 1985-01-01 Ppg Industries, Inc. Cylindrical sleeve applicator for use in manufacturing chemically treated filaments
FR2540406B1 (en) * 1983-02-04 1986-10-31 Centre Tech Ind Papier DEVICE FOR COATING A SHEET OR A CONTINUOUSLY MOVING STRIP
AT393464B (en) * 1983-05-25 1991-10-25 Johannes Zimmer DEVICE FOR APPLYING FOAMED OR HIGH-VISCOSE MEDIA
JPS60143866A (en) * 1983-12-29 1985-07-30 Konishiroku Photo Ind Co Ltd Process and device for coating
DE3406099A1 (en) * 1984-02-20 1985-08-22 John Lausanne Mladota COATING DEVICE FOR MATERIAL RAILS
DE3506135A1 (en) * 1985-02-22 1986-08-28 ASEA GmbH, 5340 Bad Honnef APPLICATION DEVICE FOR APPLYING A TOE LIQUID
US4667879A (en) * 1985-08-21 1987-05-26 Nordson Corporation Thermoplastic material applicator having an adjustable slot nozzle
JPH067944B2 (en) * 1985-10-18 1994-02-02 富士写真フイルム株式会社 Application method
DE8804351U1 (en) * 1988-03-31 1988-05-11 Ehret, Bernhard, 7800 Freiburg Nozzle for applying glues with higher viscosity
US4867097A (en) * 1988-06-15 1989-09-19 Union Camp Corporation End dam
US4889072A (en) * 1989-04-18 1989-12-26 Worldwide Converting Machinery Coating apparatus

Also Published As

Publication number Publication date
FI105534B (en) 2000-09-15
CA2002844C (en) 2000-10-10
EP0369441A3 (en) 1991-01-23
DE3839100A1 (en) 1990-05-23
JPH02245261A (en) 1990-10-01
AU4465189A (en) 1990-05-24
FI895402A0 (en) 1989-11-13
HK8094A (en) 1994-02-04
DE58904724D1 (en) 1993-07-22
US5033403A (en) 1991-07-23
ATE90596T1 (en) 1993-07-15
TW202398B (en) 1993-03-21
CA2002844A1 (en) 1990-05-18
JPH0624665B2 (en) 1994-04-06
EP0369441A2 (en) 1990-05-23
AU623450B2 (en) 1992-05-14

Similar Documents

Publication Publication Date Title
EP0369441B1 (en) Coating device for webs
EP0003790B1 (en) Device for coating a moving web
DE1652366C3 (en) Device for coating sheets
DE2756133A1 (en) DEVICE FOR APPLYING A VISCOSE LIQUID TO A SUBSTRATE
EP1088595B1 (en) Device for applying an abrasive substance onto a moving web
DE19542097C2 (en) Device for coating metal strips
DE10324729A1 (en) Method and gluing unit for continuous gluing of webs
EP0108887B1 (en) Coating apparatus
DE3438041C2 (en) Air knife coater
DE2812946C3 (en) Device for coating an endless web
DE10141514A1 (en) Rod coating method and device
AT392742B (en) Applicator unit for the application of coatings
EP0056067B1 (en) Apparatus for applying a thin layer of a coating substance to a travelling material web
CH597928A5 (en) Cascade distributor head for coating substances
DE2314531A1 (en) ROLLER APPLICATION MACHINE FOR SINGLE-SIDED COATING OF PANEL-SHAPED CUTS
DE3134968C2 (en) Device for applying a protective layer on the inside of the weld or solder seam of can bodies
EP0975434B1 (en) Glueing device for a corrugated cardboard production facility
DE3927365A1 (en) Applicator roller for coating low viscosity adhesive on foil - carries specified intersecting spiral grooves on its surface
DE3526257A1 (en) Apparatus for applying a defined amount of product to a roller casing
DE1942351B2 (en) METHOD AND DEVICE FOR APPLYING COATING MATERIAL TO A MOVING PAPER TRAIL OR THE LIKE.
DE8705742U1 (en) Device for applying a flowable mass to a web
DE29517095U1 (en) Device for applying determinable amounts of liquid
DE2617503A1 (en) METHOD AND DEVICE FOR CONTINUOUS COATING OF A RAIL-SHAPED MATERIAL WITH A LIQUID
DE3523650C2 (en)
DE3448202C2 (en) Coating arrangement for web material

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT CH DE FR GB IT LI SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH DE FR GB IT LI SE

17P Request for examination filed

Effective date: 19910717

17Q First examination report despatched

Effective date: 19920814

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR GB IT LI SE

REF Corresponds to:

Ref document number: 90596

Country of ref document: AT

Date of ref document: 19930715

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: NOTARBARTOLO & GERVASI S.R.L.

REF Corresponds to:

Ref document number: 58904724

Country of ref document: DE

Date of ref document: 19930722

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930708

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 89121212.8

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

Ref country code: GB

Payment date: 20000912

Year of fee payment: 12

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

Ref country code: SE

Payment date: 20001006

Year of fee payment: 12

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

Ref country code: CH

Payment date: 20001031

Year of fee payment: 12

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

Ref country code: DE

Payment date: 20001122

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: 20001124

Year of fee payment: 12

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

Ref country code: FR

Payment date: 20001129

Year of fee payment: 12

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: 20011116

Ref country code: AT

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

Effective date: 20011116

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

Ref country code: SE

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

Effective date: 20011117

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: 20011130

Ref country code: CH

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

Effective date: 20011130

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

EUG Se: european patent has lapsed

Ref document number: 89121212.8

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: 20020702

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: FR

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

Effective date: 20020730

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051116