EP0753357B1 - Device for applying, uniformly over the width, a thin liquid film onto a web - Google Patents

Device for applying, uniformly over the width, a thin liquid film onto a web Download PDF

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Publication number
EP0753357B1
EP0753357B1 EP96110876A EP96110876A EP0753357B1 EP 0753357 B1 EP0753357 B1 EP 0753357B1 EP 96110876 A EP96110876 A EP 96110876A EP 96110876 A EP96110876 A EP 96110876A EP 0753357 B1 EP0753357 B1 EP 0753357B1
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EP
European Patent Office
Prior art keywords
liquid storage
liquid
overflow weir
storage chamber
wall
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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
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EP96110876A
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German (de)
French (fr)
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EP0753357A1 (en
Inventor
Gerold Fleissner
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Truetzschler Nonwovens GmbH
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Fleissner GmbH
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/04—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by pouring or allowing to flow on to the surface of the textile material
    • D06B1/06—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by pouring or allowing to flow on to the surface of the textile material flowing along an inclined surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/007—Slide-hopper coaters, i.e. apparatus in which the liquid or other fluent material flows freely on an inclined surface before contacting the work
    • B05C5/008—Slide-hopper curtain coaters

Definitions

  • the invention relates to a device for applying a Working width of evenly thin, laminar flowing liquid film large Width on a continuously advanced web with a liquid storage space, which on the one hand is directed upwards at an angle to the horizontal and over the working width extending baffle is limited in the direction of flow an overflow weir as well as a liquid adjoining the overflow weir Guiding surface follows, from the bottom of which the overflowed liquid film runs on the web, and on the other hand at a distance from the storage wall above it is delimited by a backwater wall, the liquid storage space a liquid inlet area at the end opposite the overflow weir has, which is formed by a plurality of liquid inlet openings, the with several liquid supply hoses fed by a pump are connected.
  • a device of this type is known from DE 35 22 320 A1. She draws through an even application of liquid to the leading web out.
  • a paint applicator is generally built for a certain working width.
  • the incoming textile webs vary in width, possibly even short term. It is up to the machine manufacturers to make dyeing devices to deliver, with which even different working widths in short succession can be driven.
  • the limitation the working width in the area of the liquid discharge on the guide surface of the paint applicator cannot be solved satisfactorily. This is especially true with regard to the uniformity of the applied amount of paint in Edge area of the textile goods.
  • the invention is based on the object of an application device initially mentioned Art to develop in such a way that it is possible with her in a simple manner is made to reduce the constructive maximum working width in the short term or later enlarge again without the quality of the uniformity of the Fluid application subsides.
  • the im Area of the overflow weir over the entire working width of the overall device extending liquid storage space through a in the gap of the Liquid storage space from the overflow weir to the liquid inflow area extending boundary wall is limited in its width. It is Of course, advantageous if a large number of such boundary walls limit the liquid storage space several times in its working width and advantageously also only one of the liquid inflow openings in each of the partial liquid storage spaces assigned. By controlling the one for the desired one Working width only necessary inflow openings can be the working width of the application device in the area of the liquid storage space and consequently also the resulting discharge area of the liquid over the unchanged unlimited guiding surface can be determined.
  • the liquid application device consists of an angular one Bar 1, the 90 ° overflow weir 2 aligned upwards is. That is a tavern running diagonally upwards to the overflow weir 2 the baffle 3 to which the guide surface is located after the overflow weir 2 rounded here 4 connects.
  • the surface to be applied flows evenly over this guide surface Liquid film that runs off from the lower edge 5 of the guide surface 4 flows onto the web 7 guided over a roller 6.
  • this liquid storage space 9 is initially limited by the stowage wall 3 and the parallel backflow wall arranged at a distance above it 10.
  • the liquid storage space 9 thus formed is in the body 8 3 incorporated.
  • the upper end of the liquid storage space 9 protrudes together with the body 8 over the plane of the guide surface 4 for the better Influencing the flowing liquid film.
  • the liquid inlet area 11 On the overflow weir 2 opposite end of the liquid storage space 9 is the liquid inlet area 11 arranged. It consists of a multitude of across the body 8 extending bores 12, which are then at the lower end of the liquid reservoir 9 have the liquid inflow openings 13.
  • the openings are funnel-shaped.
  • a liquid distribution device 14 arranged as described in DE 40 26 198 A1. It consists in the fact that the inflowing liquid from an inflow line 15 is gradually divided into the individual holes 12. It can only be two steps, that of a z. B. with a hose, not shown equipped inflow line 15 over two of the same length, extending to the right and left Branch lines only two holes 12 supplied with the liquid become.
  • the liquid distribution device 14 is through a lid 16 which with the Body 8 is firmly connected by the screws 17, closed liquid-tight.
  • liquid storage spaces 9 are shown in FIGS. 2 and 4.
  • the liquid storage space 9 is not constant extends over the entire working width of the device.
  • Liquid storage space 9 in the area of the overflow weir 2 is not interrupted, however immediately before (seen in the direction of flow of the liquid). Extend from there up to the liquid inlet area 11, boundary walls 19 which separate neighboring liquid storage spaces 9 from each other.
  • each of the many liquid flow openings 12 a conically expanding liquid storage space 9 towards the overflow weir 2 extends.
  • the neighboring one another through the closing boundary wall 19 separate liquid storage rooms 9 run at most directly before the overflow weir.
  • the boundary walls are even better 19 form slightly longer than the plane of the guide surface 4 or Edge of the overflow weir 2. This causes a clear separation of the individual Liquid flows in the liquid storage spaces 9.
  • the flanks 18 of the Adjacent liquid storage spaces 9 run sharply in the area of the Overflow weir towards each other and end at the edge or - as I said - beyond the overflow weir.
  • the flanks 18 can, as shown, be straight but also parabolic (not shown) curved.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coating Apparatus (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

A thin laminar liquid film is applied over an extended width to a continuously moving fabric (7) by an overflow weir (2) with an upwardly inclined barrier (3). The liquid overflows down a guide surface (4) on to the fabric (7). The liquid is pumped through several feed openings (11) to the feed region (11) of a storage space (9) formed between the barrier (3) and the opposite wall (10). The storage space (9) is limited in width by a dividing wall (19) extending from the feed region (11) to the overflow weir (2).

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Aufbringen eines über die Arbeitsbreite gleichmäßig dünnen, laminar fließenden Flüssigkeitsfilmes großer Breite auf eine kontinuierlich vorbewegte Warenbahn mit einem Flüssigkeitsvorratsraum, der einerseits durch eine schräg zur Horizontalen aufwärts gerichtete und über die Arbeitsbreite sich erstreckende Stauwand begrenzt ist, der in Fließrichtung der Flüssigkeit ein Überlaufwehr sowie eine sich an das Überlaufwehr anschließende Leitfläche folgt, von deren unterm Rand der übergelaufene Flüssigkeitsfilm auf die Warenbahn abläuft, und der andererseits mit Abstand zur Stauwand darüber durch eine Gegenstauwand begrenzt ist, wobei der Flüssigkeitsvorratsraum an dem dem Überlaufwehr gegenüberliegenden Ende einen Flüssigkeitszulaufbereich aufweist, der durch mehrere Flüssigkeitszuflußöffnungen gebildet ist, die mit mehreren von einer Pumpe mit Flüssigkeit gespeisten Flüssigkeitszuflußschläuchen verbunden sind.The invention relates to a device for applying a Working width of evenly thin, laminar flowing liquid film large Width on a continuously advanced web with a liquid storage space, which on the one hand is directed upwards at an angle to the horizontal and over the working width extending baffle is limited in the direction of flow an overflow weir as well as a liquid adjoining the overflow weir Guiding surface follows, from the bottom of which the overflowed liquid film runs on the web, and on the other hand at a distance from the storage wall above it is delimited by a backwater wall, the liquid storage space a liquid inlet area at the end opposite the overflow weir has, which is formed by a plurality of liquid inlet openings, the with several liquid supply hoses fed by a pump are connected.

Eine Vorrichtung dieser Art ist durch die DE 35 22 320 A1 bekannt. Sie zeichnet sich durch einen gleichmäßigen Flüssigkeitsauftrag auf die vorlaufende Warenbahn aus.A device of this type is known from DE 35 22 320 A1. she draws through an even application of liquid to the leading web out.

Ein Farbauftraggerät wird im allgemeinen für eine bestimmte Arbeitsbreite gebaut. In der Praxis variieren aber die zulaufenden Textilbahnen in der Breite, ggf. sogar kurzfristig. Es ist die Aufgabe an die Maschinenhersteller gestellt, Färbevorrichtungen zu liefern, mit denen auch unterschiedliche Arbeitsbreiten kurzfristig hintereinander gefahren werden können. In der Praxis hat es sich gezeigt, daß die Beschränkung der Arbeitsbreite im Bereich des Flüssigkeitsabflusses an der Leitfläche des Farbauftraggerätes nicht befriedigend gelöst werden kann. Dies gilt insbesondere bezüglich der Gleichmäßigkeit der aufgetragenen Farbauftragsmenge im Randbereich des Textilgutes.A paint applicator is generally built for a certain working width. In practice, however, the incoming textile webs vary in width, possibly even short term. It is up to the machine manufacturers to make dyeing devices to deliver, with which even different working widths in short succession can be driven. In practice it has been shown that the limitation the working width in the area of the liquid discharge on the guide surface of the paint applicator cannot be solved satisfactorily. This is especially true with regard to the uniformity of the applied amount of paint in Edge area of the textile goods.

Der Erfindung liegt die Aufgabe zugrunde, eine Auftragsvorrichtung anfangs genannter Art derart weiterzuentwickeln, daß es mit ihr in einfacher Weise möglich gemacht ist, kurzfristig die konstruktive maximale Arbeitsbreite zu vermindern oder später auch wieder zu vergrößern, ohne daß die Qualität der Gleichmäßigkeit des Flüssigkeitsauftrags nachläßt.The invention is based on the object of an application device initially mentioned Art to develop in such a way that it is possible with her in a simple manner is made to reduce the constructive maximum working width in the short term or later enlarge again without the quality of the uniformity of the Fluid application subsides.

Zur Lösung der gestellten Aufgabe ist nach der Erfindung vorgesehen, daß der im Bereich des Überlaufwehres sich über die gesamte Arbeitsbreite der Gesamtvorrichtung erstreckende Flüssigkeitsvorratsraum durch eine in dem Spalt des Flüssigkeitsvorratsraumes sich vom Überlaufwehr zum Flüssigkeitszuflußbereich erstreckende Begrenzungswandung in seiner Breite begrenzt ist. Dabei ist es selbstverständlich vorteilhaft, wenn eine Vielzahl derartiger Begrenzungswandungen den Flüssigkeitsvorratsraum in seiner Arbeitsbreite mehrfach begrenzen und mit Vorteil auch nur jedem der Teil-Flüssigkeitsvorratsräume eine der Flüssigkeitszuflußöffnungen zugeordnet ist. Durch Ansteuerung der jeweils für die gewünschte Arbeitsbreite nur notwendigen Zuflußöffnungen kann damit die Arbeitsbreite des Auftragsgerätes im Bereich des Flüssigkeitsvorratsraumes und folglich auch des daraus resultierenden Ablaufbereiches der Flüssigkeit über die unverändert unbegrenzte Leitfläche bestimmt werden.To solve the problem it is provided according to the invention that the im Area of the overflow weir over the entire working width of the overall device extending liquid storage space through a in the gap of the Liquid storage space from the overflow weir to the liquid inflow area extending boundary wall is limited in its width. It is Of course, advantageous if a large number of such boundary walls limit the liquid storage space several times in its working width and advantageously also only one of the liquid inflow openings in each of the partial liquid storage spaces assigned. By controlling the one for the desired one Working width only necessary inflow openings can be the working width of the application device in the area of the liquid storage space and consequently also the resulting discharge area of the liquid over the unchanged unlimited guiding surface can be determined.

Durch die anfangs genannte DE 35 22 320 A1 ist es auch bekannt, den Flüssigkeitsvorratsraum in seinem Querschnitt zum Überlaufwehr hin langsam im Volumen zu erweitern. Dazu ist die der Stauwand gegenüberliegende Gegenstauwand um etwa 10° steiler angeordnet. Durch den sich dadurch zum Überlaufwehr hin erweiternden Flüssigkeitsvorratsraum erzielt man die zur Bildung eines laminar fließenden Flüssigkeitsfilmes notwendige Beruhigung des Flüssigkeitszuflußstromes bis zum Überlaufwehr. Die zunehmende Volumenvergroßerung bewirkt die Wirbelvergleichmäßigung.From the initially mentioned DE 35 22 320 A1, it is also known the liquid storage space in its cross section towards the overflow weir slowly in volume to expand. For this purpose, the backwater wall opposite the backwater wall is around arranged about 10 ° steeper. Due to the widening towards the overflow weir Liquid storage space is achieved to form a laminar flowing Liquid film necessary to calm down the liquid inflow flow to the overflow weir. The increasing volume increase causes the vertebrae to be evened out.

Eine solche konische Volumenvergrößerung soll auch bei der Vorrichtung mit den Begrenzungswandungen nach der Erfindung erreicht werden. In Ausgestaltung dieser Vorrichtung ist deshalb vorgesehen, daß die Stau- und die Gegenstauwand parallel zueinander verlaufen und dann die Konizität des Flüssigkeitsvorratsraumes durch die zusätzliche, den Flüssigkeitsvorratsraum teilweise ausfüllende Begrenzungswandung hergestellt ist, deren Flanken sich von der jeweiligen Flüssigkeitszuflußöffnung her konisch zum Überlaufwehr hin erstrecken. Mit einer Vorrichtung dieser Art ist vieles erreicht, sie ist konstruktiv einfach herzustellen, sie ermöglichst die genaue Einstellung einer jeden gewünschten Arbeitsbreite und gewährleistet durch die Volumenvergrößerung des Flüssigkeitsvorratsraumes vor dem Überlaufwehr unverändert den gleichmäßigen Flüssigkeitsauftrag über jede gewünschte Arbeitsbreite.Such a conical volume increase is also intended for the device with the Boundary walls can be achieved according to the invention. In development this device is therefore provided that the stowage and the backwater wall run parallel to each other and then the conicity of the liquid storage space due to the additional boundary wall that partially fills the liquid storage space is produced, the flanks of which extend from the respective liquid inflow opening extend conically towards the overflow weir. With one device A lot has been achieved in this way, it is structurally simple to manufacture, it makes it possible the exact setting of each desired working width and guaranteed by increasing the volume of the liquid storage space in front of the overflow weir unchanged even application of liquid over any desired working width.

Diese Grundkonstruktion kann durch mehrere Ideen weiter vervollständigt werden. Sie sollen anhand der Figurenbeschreibung näher erläutert werden. In der Zeichnung ist eine Vorrichtung der erfindungsgemäßen Art beispielhaft dargestellt. Es zeigen:

Fig. 1
einen Schnitt quer durch den Balken des Flüssigkeitsauftraggerätes mit der am Balken befestigen Flüssigkeitsverteilwandung,
Fig. 2
die Ansicht der Flüssigkeitsverteilwandung entlang der Linie II - II,
Fig. 3
einen Schnitt quer durch die Flüssigkeitsverteilwandung mit der unten bearbeiten Auflagefläche zur Herstellung der Flüssigkeitsvorratsräume und
Fig. 4
die Ansicht des Bodens der Flüssigkeitsverteilwandung entlang der Linie IV - IV der Fig. 3.
This basic construction can be completed by several ideas. They are to be explained in more detail using the description of the figures. In the drawing, a device of the type according to the invention is shown as an example. Show it:
Fig. 1
a section across the bar of the liquid application device with the liquid distribution wall attached to the bar,
Fig. 2
the view of the liquid distribution wall along the line II - II,
Fig. 3
a section across the liquid distribution wall with the working surface below to produce the liquid storage spaces and
Fig. 4
the view of the bottom of the liquid distribution wall along the line IV - IV of FIG. 3rd

Die Flüssigkeitsauftragsvorrichtung gemäß der Fig. 1 besteht aus einem winkelförmigen Balken 1, dessen 90° umfassendes Überlaufwehr 2 nach oben ausgerichtet ist. Der eine schräg noch oben zum Überlaufwehr 2 hin verlaufende Schenke ist die Stauwand 3, an die sich nach dem hier abgerundeten Überlaufwehr 2 die Leitfläche 4 anschließt. Über diese Leitfläche fließt gleichmäßig verteilt der aufzutragende Flüssigkeitsfilm, der nach Ablauf von der unteren Kante 5 der Leitfläche 4 auf die über eine Walze 6 geführte Warenbahn 7 fließt.The liquid application device according to FIG. 1 consists of an angular one Bar 1, the 90 ° overflow weir 2 aligned upwards is. That is a tavern running diagonally upwards to the overflow weir 2 the baffle 3 to which the guide surface is located after the overflow weir 2 rounded here 4 connects. The surface to be applied flows evenly over this guide surface Liquid film that runs off from the lower edge 5 of the guide surface 4 flows onto the web 7 guided over a roller 6.

Auf der der Stauwand 3 des Balkens 1 gegenüberliegenden Seite ist ein massiver Körper 8, die Flüssigkeitsverteilwandung, flüssigkeitsdicht befestigt, der in dem dem Überlaufwehr 2 zugeordneten Bereich einen Flüssigkeitsvorratsraum 9 aufweist. Dieser Flüssigkeitsvorratsraum 9 ist gemäß Fig. 1 zunächst begrenzt durch die Stauwand 3 und die mit Abstand darüber angeordnete, parallel verlaufende Gegenstauwand 10. Der somit gebildete Flüssigkeitsvorratsraum 9 ist in den Körper 8 gemäß Fig. 3 eingearbeitet. Das obere Ende des Flüssigkeitsvorratsraumes 9 ragt zusammen mit dem Körper 8 über die Ebene der Leitfläche 4 hinweg zur besseren Beeinflussung des abfließenden Flüssigkeitsfilmes. An dem dem Überlaufwehr 2 gegenüberliegenden Ende des Flüssigkeitsvorratsraumes 9 ist der Flüssigkeitszulaufbereich 11 angeordnet. Er besteht aus einer Vielzahl von quer durch den Körper 8 sich erstreckenden Bohrungen 12, die dann am unteren Ende des Flüssigkeitsvorratsraumes 9 die Flüssigkeitszuflußöffnungen 13 haben. Die Öffnungen sind trichterförmig erweitert.On the side opposite the storage wall 3 of the beam 1 there is a solid one Body 8, the liquid distribution wall, liquid-tight, which in the the area assigned to the overflow weir 2 has a liquid storage space 9. According to FIG. 1, this liquid storage space 9 is initially limited by the stowage wall 3 and the parallel backflow wall arranged at a distance above it 10. The liquid storage space 9 thus formed is in the body 8 3 incorporated. The upper end of the liquid storage space 9 protrudes together with the body 8 over the plane of the guide surface 4 for the better Influencing the flowing liquid film. On the overflow weir 2 opposite end of the liquid storage space 9 is the liquid inlet area 11 arranged. It consists of a multitude of across the body 8 extending bores 12, which are then at the lower end of the liquid reservoir 9 have the liquid inflow openings 13. The openings are funnel-shaped.

An dem gegenüberliegenden, oberen Ende der Bohrungen 12 ist eine Flüssigkeitsverteileinrichtung 14 angeordnet, wie sie in der DE 40 26 198 A1 beschrieben ist. Sie besteht darin, daß von einer Zuflußleitung 15 her die zufließende Flüssigkeit schrittweise in die einzelnen Bohrungen 12 aufgeteilt wird. Es können auch nur zwei Schritte sein, daß also von einer z. B. mit einem nicht dargestellten Schlauch bestückten Zuflußleitung 15 über zwei gleich lange, nach rechts und links sich erstreckende Verzweigleitungen nur zwei Bohrungen 12 mit der Flüssigkeit versorgt werden. Die Flüssigkeitsverteileinrichtung 14 ist durch einen Deckel 16, der mit dem Körper 8 durch die Schrauben 17 fest verbunden ist, flüssigkeitsdicht verschlossen.At the opposite, upper end of the bores 12 is a liquid distribution device 14 arranged as described in DE 40 26 198 A1. It consists in the fact that the inflowing liquid from an inflow line 15 is gradually divided into the individual holes 12. It can only be two steps, that of a z. B. with a hose, not shown equipped inflow line 15 over two of the same length, extending to the right and left Branch lines only two holes 12 supplied with the liquid become. The liquid distribution device 14 is through a lid 16 which with the Body 8 is firmly connected by the screws 17, closed liquid-tight.

Die Konstruktion der Flüssigkeitsvorratsräume 9 geht aus den Fig. 2 und 4 hervor. Zunächst ist festzuhalten, daß der Flüssigkeitsvorratsraum 9 sich nicht gleichbleibend über die ganze Arbeitsbreite der Vorrichtung erstreckt. Um die jeweils gewünschte Arbeitsbreite der Auftragsvorrichtung wählen zu können, ist zwar der Flüssigkeitsvorratsraum 9 im Bereich des Überlaufwehres 2 nicht unterbrochen, jedoch unmittelbar vorher (in Fließrichtung der Flüssigkeit gesehen). Von dort erstrecken sich bis zum Flüssigkeitszulaufbereich 11 Begrenzungswandungen 19, die jeweils benachbarte Flüssigkeitsvorratsräume 9 voneinander trennen.The construction of the liquid storage spaces 9 is shown in FIGS. 2 and 4. First of all, it should be noted that the liquid storage space 9 is not constant extends over the entire working width of the device. To the one you want To be able to choose the working width of the application device is Liquid storage space 9 in the area of the overflow weir 2 is not interrupted, however immediately before (seen in the direction of flow of the liquid). Extend from there up to the liquid inlet area 11, boundary walls 19 which separate neighboring liquid storage spaces 9 from each other.

Es ist bereits beschrieben, daß die Stau- 3 und die Gegenstauwand 10 parallel zueinander verlaufen. Um einen konisch zum Überlaufwehr 2 hin sich erweiternden Vorratsraum 9 zu erhalten, sind die Flanken 18 der Begrenzungswandungen 19 von der Flüssigkeitszuflußöffnung 12 aus schräg nach außen gerichtet. Damit ergibt sich ein sich konisch erweiternder Flüssigkeitsvorratsraum 9, obwohl die Stau-3 und Gegenstauwand 10 parallel zueinander verlaufen. It has already been described that the accumulation wall 3 and the backflow wall 10 are parallel to one another run. By a conically widening towards the overflow weir 2 To obtain storage space 9, the flanks 18 of the boundary walls 19 of the liquid inlet opening 12 directed obliquely outwards. So that results a conically widening liquid storage space 9, although the jam-3 and backflow wall 10 run parallel to one another.

Aus Fig. 4 ist ersichtlich, daß sich von jeder der vielen Flüssigkeitszuflußöffnungen 12 ein konisch sich erweiternder Flüssigkeitsvorratsraum 9 zum Überlaufwehr 2 hin erstreckt. Die benachbarten, voneinander durch die verschließende Begrenzungswandung 19 getrennten Flüssigkeitsvorratsräume 9 laufen höchstens unmittelbar vor dem Überlaufwehr ineinander über. Besser ist sogar, die Begrenzungswandungen 19 geringfügig länger auszubilden als die Ebene der Leitfläche 4 oder die Kante des Überlaufwehrs 2. Dies bewirkt eine klare Trennung der einzelnen Flüssigkeitsströme in den Flüssigkeitsvorratsräumen 9. Die Flanken 18 der benachbarten Flüssigkeitsvorratsräume 9 laufen spitz im Bereich des Überlaufwehres aufeinander zu und enden an der Kante oder - wie gesagt - jenseits des Überlaufwehres. Die Flanken 18 können, wie dargestellt, geradlinig aber auch parabelförmig (nicht dargestellt) gebogen verlaufen.From Fig. 4 it can be seen that each of the many liquid flow openings 12 a conically expanding liquid storage space 9 towards the overflow weir 2 extends. The neighboring one another through the closing boundary wall 19 separate liquid storage rooms 9 run at most directly before the overflow weir. The boundary walls are even better 19 form slightly longer than the plane of the guide surface 4 or Edge of the overflow weir 2. This causes a clear separation of the individual Liquid flows in the liquid storage spaces 9. The flanks 18 of the Adjacent liquid storage spaces 9 run sharply in the area of the Overflow weir towards each other and end at the edge or - as I said - beyond the overflow weir. The flanks 18 can, as shown, be straight but also parabolic (not shown) curved.

Claims (12)

  1. Apparatus for applying a laminar-flowing liquid film of large width, which is uniformly thin over the working width, to a continuously advancing web of material, said apparatus having a liquid storage chamber defined, on one side, by a retaining wall, which is orientated upwardly inclinedly relative to the horizontal and extends over the working width, which wall, when viewed with respect to the direction of flow of the liquid, is followed by an overflow weir and a guide face, which communicates with the overflow weir, the overflowing liquid film extending from the lower edge of said guide face to the material web, and which chamber is defined, on the other side, by a counter-retaining wall thereabove at a spacing from the retaining wall, the liquid storage chamber having a liquid supply region at the end situated opposite the overflow weir, and said region being formed by a plurality of liquid supply apertures which are connected to a plurality of liquid supply ducts fed with liquid by a pump, characterised in that the liquid storage chamber (9), which extends over the entire working width of the overall apparatus in the region of the overflow weir (2), is defined, in respect of its width, by a boundary wall (19), which extends in the gap of the liquid storage chamber (9) from the overflow weir (2) to the liquid supply region (11).
  2. Apparatus according to claim 1, characterised in that a plurality of such boundary walls (19) are disposed in the liquid storage chamber (9) and, in consequence, the length of the liquid storage chamber (9) is repeatedly divided over the length of the overflow weir (2).
  3. Apparatus according to claim 1 or 2, characterised in that only one liquid supply aperture (13) is associated with each of the liquid storage chambers (9).
  4. Apparatus according to one of claims 1 - 3, having a liquid storage chamber which widens taperingly towards the overflow weir, characterised in that the retaining wall (3) and the counter-retaining wall (10) extend parallel to each other, and in that the tapering of the liquid storage chamber (9) is produced by the additional boundary wall (19), which partially fills the liquid storage chamber (9), and the sides (18) of which wall extend taperingly towards the overflow weir (2) from the respective liquid supply aperture (13).
  5. Apparatus according to claim 4, characterised in that such a defined liquid storage chamber (9), which widens taperingly in respect of the volume, extends from each liquid supply aperture (13) in the liquid supply region (11) towards the overflow weir (2).
  6. Apparatus according to claim 5, characterised in that the adjacent liquid storage chambers (9), which are separated from one another by the closing boundary wall (19), overflow into one another at the most directly upstream of the overflow weir (2).
  7. Apparatus according to one of claims 1 - 6, characterised in that the sides (18) of the adjacent liquid storage chambers (9) are configured to taper to a point in the region of the overflow weir (2).
  8. Apparatus according to claim 7, characterised in that the ends of the sides (18) of the liquid storage chambers (9) end in the region of the edge (2), preferably beyond the edge (2), of the overflow weir (2).
  9. Apparatus according to one of claims 4 - 8, characterised in that the sides (19) of the liquid storage chambers (9) are taperingly remote from one another in a rectilinear manner from the liquid supply aperture (13).
  10. Apparatus according to one of claims 4 - 8, characterised in that the sides of the liquid storage chambers are taperingly remote from one another in a parabolic manner from the liquid supply aperture.
  11. Apparatus according to one of claims 1 - 10, characterised in that the boundary walls (19) of the liquid storage chamber (9) are configured as part of the body (8) with the counter-retaining wall (10) and, in consequence, the liquid storage chambers (9) are introduced into this body (8).
  12. Apparatus according to one of claims 1 - 11, characterised in that the end of the counter-retaining wall (10) adjacent the overflow weir (2) extends beyond the plane of the guide face (4).
EP96110876A 1995-07-14 1996-07-05 Device for applying, uniformly over the width, a thin liquid film onto a web Expired - Lifetime EP0753357B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19525458A DE19525458A1 (en) 1995-07-14 1995-07-14 Device for applying a liquid film which is uniformly thin over the working width to a web
DE19525458 1995-07-14

Publications (2)

Publication Number Publication Date
EP0753357A1 EP0753357A1 (en) 1997-01-15
EP0753357B1 true EP0753357B1 (en) 1999-03-31

Family

ID=7766682

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96110876A Expired - Lifetime EP0753357B1 (en) 1995-07-14 1996-07-05 Device for applying, uniformly over the width, a thin liquid film onto a web

Country Status (4)

Country Link
US (1) US5887459A (en)
EP (1) EP0753357B1 (en)
AT (1) ATE178226T1 (en)
DE (2) DE19525458A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19652882A1 (en) * 1996-12-18 1998-06-25 Voith Sulzer Papiermasch Gmbh Applicator for direct or indirect application of a liquid or pasty application medium to a running material web, in particular made of paper or cardboard
DE10120818A1 (en) * 2001-04-27 2002-10-31 Giesecke & Devrient Gmbh Method and device for introducing feature substances into a paper web
DE10254793A1 (en) * 2002-11-22 2004-06-03 Fleissner Gmbh & Co. Maschinenfabrik Device for applying a liquid layer uniformly thick over the working width onto a material web
FI115655B (en) * 2004-02-25 2005-06-15 Metso Paper Inc Coating paper/board web with plane-fed curtain coater involves determining cross-thickness profile of coating material layer on top of flow plane downstream of feed slot associated with layer
DE102005042289A1 (en) 2005-09-06 2007-03-15 Fleissner Gmbh Device for applying a uniformly thick over a large working width liquid layer on a web
DE102008056890A1 (en) * 2008-11-12 2010-05-20 Fleissner Gmbh Device for coloring webs

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE758949A (en) * 1969-11-13 1971-05-13 Ici Ltd COLORING PROCESS
US3886898A (en) * 1973-12-19 1975-06-03 Burroughs Corp Multiple, contiguous stripe, extrusion coating apparatus
DE3522320A1 (en) * 1985-06-21 1987-01-02 Vepa Ag DEVICE FOR APPLYING A LARGE WIDTH LIQUID FILM TO A TRACK
DE3808698A1 (en) * 1988-03-16 1989-09-28 Textilmaschinen Service Gmbh Appliance for the application of gas-like, liquid, pasty, preferably foamed media onto an application plane or a running, especially textile fabric web
DE4026198A1 (en) * 1990-08-18 1992-02-27 Vepa Ag DEVICE FOR APPLYING A LIQUID FILM TO A RAILWAY
DE4441805A1 (en) * 1994-11-24 1996-05-30 Fleissner Maschf Gmbh Co Device for uniformly applying a minimal amount of a treatment fluid to a textile web

Also Published As

Publication number Publication date
ATE178226T1 (en) 1999-04-15
EP0753357A1 (en) 1997-01-15
DE59601539D1 (en) 1999-05-06
DE19525458A1 (en) 1997-01-16
US5887459A (en) 1999-03-30

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