EP0570733B1 - Coating apparatus for applying a coating colour onto a paper web - Google Patents
Coating apparatus for applying a coating colour onto a paper web Download PDFInfo
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- EP0570733B1 EP0570733B1 EP93106868A EP93106868A EP0570733B1 EP 0570733 B1 EP0570733 B1 EP 0570733B1 EP 93106868 A EP93106868 A EP 93106868A EP 93106868 A EP93106868 A EP 93106868A EP 0570733 B1 EP0570733 B1 EP 0570733B1
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- coating
- zone
- application
- paper web
- colour
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/78—Controlling or regulating not limited to any particular process or apparatus
Definitions
- the invention relates to an applicator for applying coating color to a paper web, according to the preamble of claim 1. These are both roller applicators and nozzle applicators.
- Roller applicators of this type are known from DE-A-36 05 409. This device is intended to produce a uniform stroke.
- the technical requirements for coating devices in general are always the following:
- the line should be applied evenly to the paper web in every respect, both in the transverse direction (cross profile) and in the longitudinal direction. It is primarily about the weight of the application, but also about other properties such as the outer appearance of the line surface.
- Another disturbing influence can be the irregular supply of the coating color to the application zone.
- These irregularities can have various causes, e.g. Manufacturing inaccuracies of the components involved, inadequacies in the construction geometry or the flow geometry, or hydrodynamic flow problems and thus undesirable deviations in the dimensions of the flow channels in which the coating color flows.
- a third category of interference is in the base paper. As is known, this exhibits fluctuations in the basis weight, the dryness, the roughness and the absorption behavior, namely both across the web width and in the web running direction and thus over time. These influences are particularly difficult to control.
- doctor devices are located at the end of the customary roller applicators. These include a squeegee, which can be set against the paper web lying on the counter roller, and a squeegee bar, which carries the squeegee.
- a squeegee which can be set against the paper web lying on the counter roller
- a squeegee bar which carries the squeegee.
- DE-A-40 13 322 describes an application head which is used to implement various punctiform or striped application patterns for gluing paper.
- metering valves are arranged side by side across the width of the frame-like application head.
- the invention has for its object to design a commissioned work according to the preamble of claim 1 such that the stroke can be produced more uniformly in every respect than has been the case since then.
- the basic idea of the invention is to influence the line or its properties zone by zone by means which are located at a certain distance from the application zone. These are agents that are used in zones - i.e. on wide sections of the machine - either affect the temperature of the coating color or its consistency or viscosity.
- a large number of heating elements can be provided, which are arranged distributed over the machine width.
- the heating elements can either be arranged in the flow channel between the application roller and the guide wall, or inside the (hollow) application roller, or at any other point on the wall of the trough which receives the coating sump.
- a large number of supply lines can be provided, which - again distributed over the width - can supply thinner to the coating color.
- Figure 1 shows a side view of a roller applicator.
- Figure 2 shows a detail from the subject of Figure 1, in the direction of arrow A.
- Figure 3 shows a second embodiment of a roller applicator, again seen in side view.
- Figure 4 shows a third embodiment of a roller applicator, again seen in side view.
- Figure 5 shows a fourth embodiment of a roller applicator, seen in side view.
- Figure 6 shows a detail of the object of Figure 5, seen in the direction of arrow A.
- the roller applicator shown in FIG. 1 has an applicator roller 1. This runs in a coating swamp 2, which is contained in a trough 3. A mating roller 4 can also be seen, which is wrapped in a paper web 5. Trough 3 has an overflow edge 6. Via this overflow edge 6, a first overflow stream - opposite to the direction of travel of the paper web 5 - can flow into a first overflow channel 7, from where it is discharged.
- a nozzle applicator 8 can also be seen. This is connected downstream of the roller applicator. The object is therefore a combined roller-nozzle applicator.
- a baffle 9 directs a second overflow flow - coming from the nozzle applicator - into a second overflow channel 10.
- the distribution device initially comprises a conical distribution tube 20 which has an inlet 21 on one end face and an outlet 22 on its other end face.
- a feed pipe 23 is arranged essentially parallel to the distribution pipe 20. This is connected to the distribution pipe 20 via a plurality of connecting lines 24.
- the connecting lines 24 each have valves 25.
- the feed tube 23 borders on the coating sump 2 and is conductively connected to it via outlet bores 26.
- the design of the distribution device is very crucial in this embodiment.
- 1 shows in the upper area of the connecting lines 24 electrical heating elements 27 which are assigned to each individual connecting line. These heating elements can be activated separately, so that at least one connecting line or possibly several of these connecting lines 24 can be heated. The heating takes place depending on the result of the measuring device, which is connected downstream of the entire application and which, to put it very generally, detects the quality of the line (line profile measurement).
- each connecting line 24 is surrounded by a chamber which can be charged with hot water or with steam.
- the feed tube 23 is designed as a cylindrical or conical tube. It thus simultaneously takes over the function of the distribution tube 20 of the embodiment according to FIGS. 1 and 2.
- this feed tube 23 is charged with a coating of a "nominal composition" on one end face. The coating color in turn emerges through outlet bores 26 and thus reaches the sump 2, which is contained in trough 3. If necessary, an excess emerges from the other end face of the feed pipe 23, again, if necessary, a valve controlled.
- the coating tube 23 can be supplied with a coating or diluent of a different composition or consistency or viscosity or temperature than the coating color described in "nominal composition" via a plurality of lines 24 which have valves 25.
- the feed pipe 23 is fed from the front side. This can of course also be used to influence the line quality in zones and thus to achieve a line profile control.
- zone regulation is again carried out by means of temperature.
- the trough 3 is zone by zone, ie seen in the direction of the axis of the application roller 1, possibly heated differently.
- the heating can be done by electric heating rods, by hot water, by steam, by induction coils 70 or by other means.
- FIGS. 5 and 6 the idea of steam heating is shown in somewhat more detail.
- 5 shows a chamber 73 which has a steam connection 71 with a valve 72. It can be seen from the illustration in FIG. 6 that this is a multiplicity of chambers 73.
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Abstract
Description
Die Erfindung betrifft ein Auftragswerk zum Auftragen von Streichfarbe auf eine Papierbahn, gemäß dem Oberbegriff von Anspruch 1. Dabei handelt es sich sowohl um Walzenauftragswerke als auch um Düsenauftragswerke.The invention relates to an applicator for applying coating color to a paper web, according to the preamble of
Walzenauftragswerke dieser Art sind aus DE-A-36 05 409 bekannt geworden. Durch diese Einrichtung soll ein gleichmäßiger Strich erzeugt werden.Roller applicators of this type are known from DE-A-36 05 409. This device is intended to produce a uniform stroke.
Die technischen Anforderungen an Streicheinrichtungen ganz allgemein sind immer wieder die folgenden: Der Strich soll in jeder Beziehung gleichmäßig auf die Papierbahn aufgetragen werden, und zwar sowohl in Querrichtung (Querprofil), als auch in Längsrichtung. Dabei geht es in erster Linie um das Auftragsgewicht, aber auch um andere Eigenschaften wie um das äußere Erscheinungsbild der Strichoberfläche.The technical requirements for coating devices in general are always the following: The line should be applied evenly to the paper web in every respect, both in the transverse direction (cross profile) and in the longitudinal direction. It is primarily about the weight of the application, but also about other properties such as the outer appearance of the line surface.
Die Störeinflüsse, die diesen Forderungen entgegenstehen, sind zahlreich.The disturbances that conflict with these demands are numerous.
Bei Walzenauftragswerken treten Probleme vor allem in der keilförmigen Einlaufzone zwischen Auftragswalze und Gegenwalze auf, und zwar besonders bei hohen Geschwindigkeiten. Dies geht vor allem auf den Einfluß der Luft zurück, die beim Umlauf der Gegenwalze zusammen mit der Papierbahn in den Einlaufzwickel eingeschleppt wird. Sie vermischt sich dabei mit der Streichfarbe an der Stelle, an der diese die Papierbahn berührt. An der oberen Kante des maschinenbreiten Leitkörpers kommt es ja im allgemeinen zum Übertreten eines Überlaufstromes von Streichfarbe, und zwar entgegen der Laufrichtung der Papierbahn und entgegen dem Luftstrom. Prallt der Luftstrom auf diesen Überlaufstrom, so führt dies zu einem teilweisen Zurückdrängen des Überlaufstromes sowie zum Vermischen von Luft und Streichfarbe. Derartige Störungen finden auch dann statt, wenn kein Leitkörper vorgesehen ist, und wenn sich demzufolge ein freier Spiegel der Streichmasse zwischen der Mantelfläche der Auftragswalze und der Trogwand einstellt.With roller applicators, problems occur especially in the wedge-shaped inlet zone between the applicator roller and the counter roller, especially at high speeds. This is mainly due to the influence of the air, which at Circulation of the counter roller together with the paper web is introduced into the inlet gusset. It mixes with the coating color at the point where it touches the paper web. At the upper edge of the machine-wide guide body, there is generally an overflow of coating color, namely against the direction of travel of the paper web and against the air flow. If the air flow impacts this overflow flow, this leads to a partial suppression of the overflow flow and to the mixing of air and coating color. Such faults also occur when no guide body is provided and when there is consequently a free level of the coating slip between the outer surface of the application roller and the trough wall.
Ein weiterer Störeinfluß kann in unregelmäßiger Zufuhr der Streichfarbe zur Auftragszone liegen. Diese Unregelmäßigkeiten können verschiedene Ursachen haben, z.B. Fertigungsungenauigkeiten der beteiligten Bauteile, Unzulänglichkeiten in der Baugeometrie bzw. der Strömungsgeometrie, oder hydrodynamische Strömungsprobleme und damit unerwünschte Abweichungen der Abmessungen der Strömungskanäle, in welchen die Streichfarbe fließt.Another disturbing influence can be the irregular supply of the coating color to the application zone. These irregularities can have various causes, e.g. Manufacturing inaccuracies of the components involved, inadequacies in the construction geometry or the flow geometry, or hydrodynamic flow problems and thus undesirable deviations in the dimensions of the flow channels in which the coating color flows.
Eine dritte Kategorie von Störeinflüssen liegt im Rohpapier. Dieses weist bekanntlich Schwankungen des Flächengewichts, des Trockengehalts, der Rauhigkeit und des Absorptionsverhaltens auf, und zwar sowohl über die Bahnbreite hinweg, als auch in Bahnlaufrichtung und damit über die Zeit. Diese Einflüsse sind besonders schwer zu beherrschen.A third category of interference is in the base paper. As is known, this exhibits fluctuations in the basis weight, the dryness, the roughness and the absorption behavior, namely both across the web width and in the web running direction and thus over time. These influences are particularly difficult to control.
Bekanntlich befindet sich am Ende der üblichen Walzenauftragswerke Rakeleinrichtungen. Diese umfassen eine Rakel, welche gegen die an der Gegenwalze anliegende Papierbahn anstellbar ist, und einen Rakelbalken, der die Rakel trägt. Bei Unregelmäßigkeiten des Strichs versucht man, Korrekturen mittels der Rakeleinrichtung vorzunehmen. Dabei kann eine Verstellung über die gesamte Breite vorgenommen werden. Es kann aber auch örtlich begrenzt korrigiert werden, d.h. nur an bestimmten Stellen der Bahnbreite. Diese Maßnahmen können eine gewisse Abhilfe bringen. Sie reichen jedoch meist nicht aus, um das gewünschte Ergebnis zu erzielen.As is known, doctor devices are located at the end of the customary roller applicators. These include a squeegee, which can be set against the paper web lying on the counter roller, and a squeegee bar, which carries the squeegee. In the event of irregularities in the line, attempts are made to make corrections using the doctor device. This can be an adjustment be made over the entire width. However, it can also be corrected locally, ie only at certain points in the web width. These measures can bring some relief. However, they are usually not enough to achieve the desired result.
Eine andere Einrichtung zur Regelung der Strichqualität ist in der US-A-4,732,776 beschrieben. Diese Patentschrift bezieht sich jedoch auf ein Auftragswerk, dessen Auftragsorgan als Auftragssumpf mit einer freien Flüssigkeitsoberfläche ausgebildet ist. Die Papierbahn wird durch den Auftragssumpf hindurchgeführt. Am Auslauf des Auftragssumpfes ist ein Schlitz zwischen einer flexiblen Klinge und der Mantelfläche einer Gegenwalze gebildet. Mittels Bimetall-Elementen, die über Heizelemente angesteuert werden, kann die Weite des Schlitzes örtlich unterschiedlich eingestellt werden, um so den örtlichen Durchsatz an Streichfarbe, also die Menge an Streichfarbe, die aus dem Sumpf durch den Schlitz auf die Papierbahn gelangt, zu verändern. Die Regelung der Schlitzweite erfolgt aufgrund einer Messung der Dicke des Striches an mehreren Stellen quer zur Papierbahnbreite.Another line quality control device is described in US-A-4,732,776. This patent, however, relates to an application work, the application member of which is designed as an application sump with a free liquid surface. The paper web is passed through the sump. At the outlet of the application sump, a slot is formed between a flexible blade and the outer surface of a counter roller. The width of the slot can be set differently by means of bimetallic elements, which are controlled via heating elements, in order to change the local throughput of coating color, that is to say the amount of coating color which reaches the paper web from the sump through the slot. The slit width is regulated on the basis of a measurement of the thickness of the line at several points across the width of the paper web.
In der DE-A-40 13 322 ist ein Auftragskopf beschrieben, der der Realisierung verschiedener punktueller oder streifenförmiger Auftragsmuster zur Verleimung von Papier dient. Dafür sind über die Breite des rahmenartigen Auftrags kopfes im Abstand nebeneinander Dosierventile angeordnet.DE-A-40 13 322 describes an application head which is used to implement various punctiform or striped application patterns for gluing paper. For this purpose, metering valves are arranged side by side across the width of the frame-like application head.
Der Erfindung liegt die Aufgabe zugrunde, ein Auftragswerk gemäß dem Oberbegriff von Anspruch 1 derart zu gestalten, daß der Strich in jeder Beziehung gleichmäßiger herstellbar ist, als dies seither der Fall war.The invention has for its object to design a commissioned work according to the preamble of
Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Demnach besteht der Grundgedanke der Erfindung darin, eine zonenweise Beeinflussung des Striches bzw. von.dessen Eigenschaften durch Mittel vorzunehmen, die sich in einem gewissen Abstand vor der Auftragszone befinden. Dabei handelt es sich um Mittel, die zonenweise - d.h. auf breiten Abschnitten der Maschine - entweder die Temperatur der Streichfarbe oder deren Konsistenz oder Viskosität beeinflussen.This object is solved by the features of
Bei den bisher bekannten gattungsgemäßen Auftragswerken wurden immer wieder Maßnahmen ergriffen, um auf die Störeinflüsse selbst Einfluß zu nehmen, und damit auf den Strich. Der Erfinder geht nunmehr einen ganz anderen Weg: Er kümmert sich nicht um die Störeinflüsse selbst. vielmehr nutzt er die Meßdaten über den fertigen Strich aus, um an einer viel früheren Stelle durch die genannten Maßnahmen - Veränderungen der Temperatur oder der Konsistenz - Einfluß zu nehmen. Dieses erfindungsgemäße Prinzip hat sich als eleganter, kostengünstiger und wirkungsvoller Weg erwiesen, die Störeinflüsse zu kompensieren.In the previously known generic commissioned works, measures were repeatedly taken to influence the interference itself, and thus to the bottom line. The inventor now takes a completely different path: he does not take care of the interference itself. Rather, he uses the measurement data on the finished line to influence the changes mentioned - temperature or consistency - at a much earlier point . This principle according to the invention has proven to be an elegant, inexpensive and effective way of compensating for the interference.
Es gibt zahlreiche Möglichkeiten, die Erfindung praktisch zu verwirklichen.There are numerous ways of practicing the invention.
Beispielsweise kann zur Beeinflussung der Temperatur eine Vielzahl von Heizelementen vorgesehen werden, die über die Maschinenbreite verteilt angeordnet sind. Die Heizelemente können entweder im Strömungskanal zwischen Auftragswalze und Leitwand angeordnet sein, oder innerhalb der (hohlen) Auftragswalze, oder an irgendeiner anderen Stelle an der Wandung des Trogs, die den Streichfarbensumpf aufnimmt. Oder es kann eine Vielzahl von Zuleitungen vorgesehen werden, die - wiederum über die Breite verteilt - der Streichfarbe Verdünnungsmittel zuführen können.For example, in order to influence the temperature, a large number of heating elements can be provided, which are arranged distributed over the machine width. The heating elements can either be arranged in the flow channel between the application roller and the guide wall, or inside the (hollow) application roller, or at any other point on the wall of the trough which receives the coating sump. Or a large number of supply lines can be provided, which - again distributed over the width - can supply thinner to the coating color.
Das Betreiben aller dieser genannten Mittel geschieht entsprechend dem Ergebnis der Meßdaten am fertigen Strich. Diese Meßdaten dienen somit als Meßsignale, die einer CPU eingespeist werden, von wo aus der Befehl an das betreffende Korrekturaggregat gegeben wird, also beispielsweise bei einer Konsistenzregelung an ausgesuchte Zuleitungen für Verdünnungsmittel.All of these means are operated in accordance with the result of the measurement data on the finished line. These measurement data thus serve as measurement signals which are fed to a CPU, from where the command is given to the correction unit in question, that is to say, for example, in the case of a consistency control to selected feed lines for diluents.
Die Erfindung ist anhand der Zeichnung näher erläutert. Darin ist im einzelnen folgendes dargestellt:The invention is explained in more detail with reference to the drawing. The following is shown in detail:
Figur 1 zeigt in einer Seitenansicht ein Walzenauftragswerk.Figure 1 shows a side view of a roller applicator.
Figur 2 zeigt eine Einzelheit aus dem Gegenstand von Figur 1, und zwar in Blickrichtung des Pfeiles A.Figure 2 shows a detail from the subject of Figure 1, in the direction of arrow A.
Figur 3 zeigt eine zweite Ausführungsform eines Walzenauftragswerkes, wiederum in Seitenansicht gesehen.Figure 3 shows a second embodiment of a roller applicator, again seen in side view.
Figur 4 zeigt eine dritte Ausführungsform eines Walzenauftragswerkes, wiederum in Seitenansicht gesehen.Figure 4 shows a third embodiment of a roller applicator, again seen in side view.
Figur 5 zeigt eine vierte Ausführungsform eines Walzenauftragswerkes, in Seitenansicht gesehen.Figure 5 shows a fourth embodiment of a roller applicator, seen in side view.
Figur 6 zeigt eine Einzelheit des Gegenstandes von Figur 5, in Richtung des Pfeiles A gesehen.Figure 6 shows a detail of the object of Figure 5, seen in the direction of arrow A.
Das in Figur 1 dargestellte Walzenauftragswerk weist eine Auftragswalze 1 auf. Diese läuft in einem Streichfarbensumpf 2 um, der in einem Trog 3 enthalten ist. Man erkennt ferner eine Gegenwalze 4, die von einer Papierbahn 5 umschlungen ist. Trog 3 weist eine Überlaufkante 6 auf. Über diese Überlaufkante 6 kann ein erster Überlaufstrom - entgegen der Laufrichtung der Papierbahn 5 - in eine erste Überlaufrinne 7 überströmen, von wo er abgeführt wird.The roller applicator shown in FIG. 1 has an
Man erkennt ferner ein Düsenauftragswerk 8. Dieses ist dem Walzenauftragswerk nachgeschaltet. Es handelt sich somit bei dem Gegenstand um ein kombiniertes Walzen-Düsenauftragswerk. Ein Ableitblech 9 leitet einen zweiten Überlaufstrom - aus dem Düsenauftragswerk kommend - in eine zweite Überlaufrinne 10.A
Die für die Erfindung entscheidenden Elemente sind in der Verteileinrichtung verwirklicht. Diese erkennt man besonders gut aus Figur 2. Die Verteileinrichtung umfaßt zunächst ein konisches Verteilrohr 20, das an seiner einen Stirnseite einen Zulauf 21 und an seiner anderen Stirnseite einen Auslauf 22 aufweist. Im wesentlichen parallel zu dem Verteilrohr 20 ist ein Zuführrohr 23 angeordnet. Dieses ist über eine Vielzahl von Verbindungsleitungen 24 mit dem Verteilrohr 20 verbunden. Die Verbindungsleitungen 24 weisen jeweils Ventile 25 auf. Das Zuführrohr 23 grenzt an den Streichfarbensumpf 2 und ist mit diesem über Austrittsbohrungen 26 leitend verbunden.The elements decisive for the invention are implemented in the distribution device. This can be seen particularly well from FIG. 2. The distribution device initially comprises a
Im Sinne der Erfindung ist bei dieser Ausführungsform ganz entscheidend die Ausgestaltung der Verteileinrichtung. Man erkennt aus Figur 1 im oberen Bereich der Verbindungsleitungen 24 elektrische Heizstäbe 27, die jeder einzelnen Verbindungsleitung zugeordnet sind. Diese Heizstäbe sind getrennt aktivierbar, so daß wenigstens eine Verbindungsleitung oder gegebenenfalls mehrere dieser Verbindungsleitungen 24 beheizt werden kann. Das Beheizen geschieht in Abhängigkeit vom Ergebnis der Meßeinrichtung, die dem gesamten Auftragswerk nachgeschaltet ist und die ganz allgemein gesagt die Qualität des Striches erfaßt (Strichprofilmessung).In the sense of the invention, the design of the distribution device is very crucial in this embodiment. 1 shows in the upper area of the connecting
Statt der Heizstäbe 27 ist es auch möglich, die einzelnen Verbindungsleitungen 24 zu ummanteln, so daß jede Verbindungsleitung 24 von einer Kammer umgeben ist, die mit Heißwasser oder mit Dampf beschickbar ist.Instead of the
Bei der Ausführungsform gemäß Figur 3 - wiederum ein kombiniertes Walzen-Düsen-Auftragswerk darstellend - ist das Zuführrohr 23 als zylindrisches oder konisches Rohr ausgeführt. Es übernimmt somit gleichzeitig die Funktion des Verteilrohres 20 der Ausführungsform gemäß der Figuren 1 und 2. Dieses Zuführrohr 23 wird bei dieser Ausführungsform auf der einen Stirnseite mit Streichfarbe einer "Nominalzusammensetzung" beschickt. Die Streichfarbe tritt wiederum durch Austrittsbohrungen 26 aus und gelangt somit in den Sumpf 2, der in Trog 3 enthalten ist. Gegebenenfalls tritt ein Überschuß aus der anderen Stirnseite des Zuführrohres 23 aus, wiederum gegebenenfalls Ventil geregelt.In the embodiment according to FIG. 3 - again representing a combined roller-nozzle applicator - the
Das besondere ist an dieser Ausführungsform, daß dem Zuführrohr 23 über eine Vielzahl von Leitungen 24, die Ventile 25 aufweisen, Streichfarbe oder Verdünnungsmittel anderer Zusammensetzung oder anderer Konsistenz oder anderer Viskosität oder anderer Temperatur zugeführt werden kann, als die Streichfarbe, die in "Nominalzusammensetzung" dem Zuführrohr 23 von der Stirnseite her zugeführt wird. Auch damit läßt sich natürlich eine zonenweise Beeinflussung der Strichqualität und somit eine Strichprofilregelung erreichen.What is special about this embodiment is that the
Bei der Ausführungsform gemäß Figur 4 wird die Zonenregulierung wiederum mittels Temperatur vorgenommen. Dabei wird der Trog 3 zonenweise, d.h. in Richtung der Achse der Auftragswalze 1 gesehen, gegebenenfalls unterschiedlich beheizt. Die Heizung kann durch elektrische Heizstäbe vorgenommen werden, durch Heißwasser', durch Dampf, durch Induktionsspulen 70 oder durch andere Mittel.In the embodiment according to FIG. 4, zone regulation is again carried out by means of temperature. The
Bei der Ausführungsform gemäß den Figuren 5 und 6 ist der Gedanke der Dampfheizung noch etwas genauer dargestellt. Man erkennt in der Seitenansicht gemäß Figur 5 eine Kammer 73, die einen Dampfanschluß 71 mit einem Ventil 72 aufweist. Aus der Darstellung von Figur 6 erkennt man, daß es sich hierbei um eine Vielzahl von Kammern 73 handelt.In the embodiment according to FIGS. 5 and 6, the idea of steam heating is shown in somewhat more detail. 5 shows a
Claims (6)
- An application apparatus for applying coating colour to a paper web, having- an application device, in particular in the form of an applicator roll (1) or a nozzle (8),- a counter-roll (4), around which the paper web (5) is wound and which with the application device (1, 8) forms an application zone,characterised in that- a measuring device is provided for measuring the thickness or the weight or the surface quality of the coating at several locations over the width of the paper web and- means (27; 24, 25; 70, 71) for the zone-by zone regulation of the temperature or of the consistency of the coating colour with respect to a coating profile which is uniform over the web width are located on the flow path from the coating colour inlet (21; 23) to the application zone at a certain distance in front of the application zone.
- An application apparatus according to Claim 1,
characterised in that- the application device is an applicator roll (1) which revolves in a coating colour basin (2),- a trough (3) for housing the basin (2) is provided, and- the trough (3) comprises a coating colour inlet and a deflecting wall provided in the ascending region of the applicator roll (1) with a first overflow edge (6) and also an overflow channel (7) for a first overflow stream connected thereto. - An application apparatus according to Claim 1 or 2,
characterised in that both an applicator roll (1) and also an applicator nozzle (8) are provided as application devices. - An application apparatus according to Claim 3,
characterised in that the applicator roll (1) is mounted in front of the applicator nozzle (8). - An application apparatus according to one of Claims 1 to 4,
characterised in that the means mounted in front of the application zone consist of a plurality of heating devices (27; 70; 71, 72, 73) distributed over the machine width. - An application apparatus according to one of Claims 1 to 5,
characterised in that the means mounted in front of the application zone consist of a plurality of controllable supply lines (24) for supplying media influencing the consistency, the viscosity, the temperature or the composition of the coating colour over the width.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4216447 | 1992-05-19 | ||
| DE4216447 | 1992-05-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0570733A1 EP0570733A1 (en) | 1993-11-24 |
| EP0570733B1 true EP0570733B1 (en) | 1997-08-27 |
Family
ID=6459190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93106868A Expired - Lifetime EP0570733B1 (en) | 1992-05-19 | 1993-04-28 | Coating apparatus for applying a coating colour onto a paper web |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5529629A (en) |
| EP (1) | EP0570733B1 (en) |
| JP (1) | JP3245255B2 (en) |
| AT (1) | ATE157416T1 (en) |
| CA (1) | CA2096568A1 (en) |
| DE (1) | DE59307188D1 (en) |
| FI (1) | FI98748C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19524702C1 (en) * | 1995-07-06 | 1996-10-24 | Voith Sulzer Papiermasch Gmbh | Coating device for applying liq or paste-form media to paper or board |
| DE29613313U1 (en) * | 1996-08-01 | 1996-10-02 | Voith Sulzer Papiermasch Gmbh | Distribution device with distribution pipe for a commissioned work |
| DE19637164A1 (en) * | 1996-09-12 | 1998-03-19 | Voith Sulzer Papiermasch Gmbh | Method and device for the direct or indirect application of a liquid or pasty medium to a running material web |
| DE19715117A1 (en) * | 1997-04-11 | 1998-10-15 | Voith Sulzer Papiermasch Gmbh | Assembly to coat a moving web |
| DE19723458A1 (en) | 1997-06-04 | 1998-12-10 | Voith Sulzer Papiermasch Gmbh | Device and method for applying a liquid or pasty medium to a moving surface |
| DE19734262A1 (en) * | 1997-08-07 | 1999-02-11 | Voith Sulzer Papiermasch Gmbh | Process for the direct or indirect application of a liquid or pasty medium to a running material web, in particular made of paper or cardboard |
| DE19801140A1 (en) * | 1998-01-14 | 1999-07-15 | Voith Sulzer Papiertech Patent | Device for the direct or indirect application of a liquid to pasty application medium on a running material web and operating method for such a device |
| US9073770B2 (en) * | 2008-10-28 | 2015-07-07 | Usemco, Inc. | Portable high rate anaerobic digester apparatus and method of operation |
| CN107649329B (en) * | 2017-08-21 | 2019-07-12 | 重庆天旗实业有限公司 | A kind of surface coating device for cylindricality packing box production |
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| DE3637452A1 (en) * | 1986-11-04 | 1988-05-19 | Pagendarm Beschichtungstechnik | FLOW CONTROL DEVICE |
| US4957770A (en) * | 1989-01-27 | 1990-09-18 | Measurex Corporation | Coating weight measuring and control apparatus and method |
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| US3190261A (en) * | 1960-09-28 | 1965-06-22 | Lab For Electronics Inc | Control system |
| DE1652474A1 (en) * | 1967-08-12 | 1971-02-11 | Windmoeller & Hoelscher | Method and arrangement for keeping the thickness of the order constant on moving webs in coating devices with roller application |
| US3567923A (en) * | 1968-04-03 | 1971-03-02 | Hurlectron Inc | System for monitoring and controlling the color density of ink during printing |
| JPS6040904B2 (en) * | 1981-09-30 | 1985-09-13 | 日本発条株式会社 | Continuous application equipment for reactive mixtures |
| DE3203087A1 (en) * | 1982-01-30 | 1983-08-04 | Gebrüder Sucker, 4050 Mönchengladbach | METHOD AND DEVICE FOR COATING OR IMRAEGNING A SUBSTRATE GUIDED IN A TRAIN |
| DE3216731A1 (en) * | 1982-05-05 | 1983-11-10 | Hoechst Ag, 6230 Frankfurt | METHOD AND DEVICE FOR CONTINUOUSLY DYEING AND / OR FINISHING WET, TEXTILE PRODUCTS |
| DE3330092A1 (en) * | 1983-08-20 | 1985-03-07 | Leybold-Heraeus GmbH, 5000 Köln | METHOD FOR ADJUSTING THE LOCAL EVAPORATION PERFORMANCE ON EVAPORATORS IN VACUUM EVAPORATION PROCESSES |
| JPS61230764A (en) * | 1985-04-05 | 1986-10-15 | Nippon Brunswick Kk | Conditioning oil coating apparatus of bowling lane maintenance apparatus |
| DE3604409A1 (en) * | 1986-02-12 | 1987-08-13 | Helmut Dipl Chem Dr Braun | Device for mounting ceiling termination mouldings |
| DE3605409C3 (en) * | 1986-02-20 | 1996-07-04 | Voith Gmbh J M | Device for coating running webs |
| US4732776A (en) * | 1987-02-24 | 1988-03-22 | Measurex Corporation | Apparatus and method for controlling the thickness of coatings on paper or other materials |
| JPS6415172A (en) * | 1987-07-07 | 1989-01-19 | Fuji Photo Film Co Ltd | Method and equipment for coating |
| JP2558136B2 (en) * | 1988-02-05 | 1996-11-27 | コニカ株式会社 | Coating device for magnetic recording media |
| SE8902654L (en) * | 1988-08-19 | 1990-02-20 | Voith Gmbh J M | Coating |
| JPH02139064A (en) * | 1988-11-21 | 1990-05-29 | Mitsubishi Heavy Ind Ltd | Lateral coating amount control device |
| US5045342A (en) * | 1989-01-27 | 1991-09-03 | Measurex Corporation | Independent heat moisture control system for gloss optimization |
| DE4013322A1 (en) * | 1990-04-26 | 1991-10-31 | Heino Kaiser | Multiple applicator head for flowing medium - has several controlled feed valves fitted in modular structure in frame-type head |
| JP3193075B2 (en) * | 1991-07-05 | 2001-07-30 | 三菱製紙株式会社 | Manufacturing method of coated paper |
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1993
- 1993-04-28 AT AT93106868T patent/ATE157416T1/en not_active IP Right Cessation
- 1993-04-28 EP EP93106868A patent/EP0570733B1/en not_active Expired - Lifetime
- 1993-04-28 DE DE59307188T patent/DE59307188D1/en not_active Expired - Fee Related
- 1993-05-14 JP JP11319993A patent/JP3245255B2/en not_active Expired - Fee Related
- 1993-05-18 FI FI932263A patent/FI98748C/en not_active IP Right Cessation
- 1993-05-19 CA CA002096568A patent/CA2096568A1/en not_active Abandoned
-
1994
- 1994-08-08 US US08/287,094 patent/US5529629A/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3637452A1 (en) * | 1986-11-04 | 1988-05-19 | Pagendarm Beschichtungstechnik | FLOW CONTROL DEVICE |
| US4957770A (en) * | 1989-01-27 | 1990-09-18 | Measurex Corporation | Coating weight measuring and control apparatus and method |
Also Published As
| Publication number | Publication date |
|---|---|
| FI98748B (en) | 1997-04-30 |
| DE59307188D1 (en) | 1997-10-02 |
| CA2096568A1 (en) | 1993-11-20 |
| FI932263A0 (en) | 1993-05-18 |
| FI932263A (en) | 1993-11-20 |
| ATE157416T1 (en) | 1997-09-15 |
| JPH067730A (en) | 1994-01-18 |
| FI98748C (en) | 1997-08-11 |
| JP3245255B2 (en) | 2002-01-07 |
| US5529629A (en) | 1996-06-25 |
| EP0570733A1 (en) | 1993-11-24 |
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