EP1198643B1 - Application device - Google Patents

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Publication number
EP1198643B1
EP1198643B1 EP01955224A EP01955224A EP1198643B1 EP 1198643 B1 EP1198643 B1 EP 1198643B1 EP 01955224 A EP01955224 A EP 01955224A EP 01955224 A EP01955224 A EP 01955224A EP 1198643 B1 EP1198643 B1 EP 1198643B1
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EP
European Patent Office
Prior art keywords
nozzle
web
lips
nozzle body
roll
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
EP01955224A
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German (de)
French (fr)
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EP1198643A1 (en
Inventor
Kurt Eichinger
Lothar Pfalzer
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Voith Patent GmbH
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Voith Patent GmbH
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Publication of EP1198643A1 publication Critical patent/EP1198643A1/en
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    • 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/086—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith
    • B05C1/0869—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith the work contacting the pool
    • 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • D21H23/40—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper only one side of the paper being in contact with the material
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • D21H23/42—Paper being at least partly surrounded by the material on both sides

Definitions

  • the invention relates to a device for applying a liquid medium to a moving web, in particular board web, with the features specified in the preamble of claim 1.
  • Generic devices serve the purpose of producing, processing or finishing a fibrous web, for example of paper or cardboard, to impregnate them with a liquid medium and / or to coat.
  • the application medium used is glue, starch or a color pigment-containing suspension or dispersion. With this treatment of the web certain properties of the web are to be changed and improved.
  • Fig.1 is a so-called size press described.
  • the size press consists of two parallel rolls, which form a nip traversed by the paper web. During operation of the device, a liquid sump exists between the web and each of the two rolls, so that the web is simultaneously impregnated from both sides.
  • This device has the disadvantage that with increasing web speed, the liquid present in the liquid sump is exposed to very high turbulence and the liquid in the environment (for example on device parts and on the web) squirts, whereby a uniform application to the web is no longer possible.
  • the supply device consists in each case of a Hauptverteilrohr distributed over its entire length arranged discharge openings, which in turn are connected to a flow channel for forming the sump.
  • the flow channel is part of a nozzle body.
  • the nozzle body consists of parallel walls which extend over the entire width of the device. Nozzle lips attached to these walls sink into the sump.
  • the nozzle body is centrally divided by a wall in said flow channel for supplying the sump and in another channel for withdrawing the medium from the sump by means of vacuum to form a reservoir. In the circulation medium from the reservoir is fed to the sump and withdrawn again.
  • the devices are quite elaborately designed, especially since the exhaust duct still a collection space is available from which the medium must be pumped into the reservoir. In addition, the entire device is permanently installed.
  • the invention is therefore based on the object to improve the device mentioned in the preamble in terms of easier cleaning ability, ease of use and easier adaptation to given situations while largely avoiding sprays from the sump.
  • the nozzle body is starting from the nip outwards, bent or bent.
  • the shape is chosen so that in approximately an approximate shape to the rollers is achieved.
  • the lower part of the nozzle body is also adapted to the shape of, between the roller and the supporting running web existing gusset (which is filled by the sump) adapted.
  • the nozzle body is provided with a joint in order to be able to set the desired bending angle.
  • the desired size of the free surface of the sump can be adjusted.
  • the nozzle lips are suitably made of a plastic. They can be easily produced in any shape and size and easily screwed to the walls of the nozzle body or cling. In experiments, an immersion depth of up to about 80% of the height (or length) of the die lips has proven to be most effective for spray avoidance and uniformity of application or impregnation of the web.
  • the entire supply device is connected to a pivoting device.
  • the supply device can be pivoted away from the nip so that on the one hand there is sufficient space to clean the roller or rollers and, on the other hand, the device need not be removed if one of the rollers or both rollers has to be replaced.
  • the pivoting device should therefore be separated from the latter case by be supported by the roller bearing.
  • the device according to the invention is arranged or acts only on one side.
  • devices according to the invention are present on both sides of the material web.
  • rollers instead of rollers, other support elements, such as running, flexible endless belts can be provided.
  • the nozzle formed by the nozzle lips of the nozzle body discharges the application medium dispensing to the sump directly downwards, ie in the direction of the tip of the gusset. This ensures that the application medium reaches the lowest point of the gusset and can thus be reliably pressed into the fabric web in the nip.
  • a baffle By arranging a streamlined shaped baffle bar at a small distance below the outlet opening the incoming application medium is deflected in the radial direction. With the cross flows generated in this way, the unwanted eddies can be reduced.
  • FIG. 1 two rolls 1 and 1a are shown, which together form a nip (press nip) 4 passed through by the cardboard web 3.
  • the web 3 passes through the nip 4 substantially from top to bottom, wherein also an entry angle of the web in the nip is adjustable, but not shown.
  • a coating medium supply device 5 and 5a is provided on both sides of the web 3 for a simultaneous, double-sided application of the liquid medium, such as starch, to the web 3.
  • the liquid medium such as starch
  • the supply device 5 and 5a consists of a main distribution pipe 7 or 7a.
  • This Schoverteilrohr is designed machine-wide and receives the application medium in the end faces.
  • Through these tubes 8 and 8a quite targeted amounts of application medium can be fed into a respective metering gap 9 and 9a, so that a uniform feed over the entire web width and thus a uniform pressure distribution is possible.
  • a cover plate 18 and 18a protects the distribution pipes 8 and 8a against contamination. In addition, this results in a very closed, compact design of good design.
  • the metering gap 9 and 9a is located in the space of parallel, across the entire width of the device reaching walls 10 and 10a and 11 and 11a, wherein each of the walls 10 and 11 a nozzle body 12 and the walls 10a and 11a form a nozzle body 12a.
  • the lower part of the nozzle body 12 and 12a that is the part that dips into the sump 6 and 6a, consists of specially shaped, suitably converging nozzle lips 13 and 14 or 13a and 14a.
  • FIG. 2 illustrates a second embodiment of the nozzle 15 ,.15a.
  • the rest of the construction of the applicator device according to this second variant is otherwise basically the same as the embodiment according to FIG. 1 , Therefore, the same reference numerals have been retained.
  • the application medium is deflected by means of a streamlined shaped impact bar 20 , .20a.
  • the nozzle openings 15 and 15a can be characterized as transverse flow openings, from which the medium is dispensed radially in each case in the direction of the material web to be treated and the roll 1 or 1a. Also in the FIG. 2 the flow directions are shown with small arrows.
  • Swirling in the sump can be further reduced by using the second nozzle embodiment.
  • the strip 20, 20a is conically shaped in an advantageous, aerodynamically favorable manner and rounded off at the end pointing to the gusset tip.
  • This strip is either part of the complete nozzle body 12 and 12a, or part of a single nozzle lip 13, 13a, 14 or 14a, or a separately arranged component.
  • the size of the free surface of the sump 6 and 6a and also the immersion depth of the nozzle lips can be adjusted , This means that depending on how deep the die lips dip into the sump, the level of the sump can be raised or lowered. At a higher water level, a better penetration due to the longer residence time is achieved. The immersion depth can reach up to 80% of the total length the die lips amount. Despite a higher water level unwanted turbulence and Abspritzept from the device are greatly reduced.
  • FIG. 1 is to clarify the water level according to the prior art, with Pb (for P egelstand Isher b) and the present invention set water level designated by P.
  • the die lips are made of plastic in different sizes. They are easy to prepare and store, easy to clean, insensitive to corrosion and of low weight.
  • the nozzle body 12 , ie its walls 10, 11 and 10a, 11a in two parts - are made of upper part O and lower part U.
  • Upper part and lower part are detachable, for example by screwing, or hinged together.
  • the nozzle lips 13 and 14 and 13a, 14a are attached.
  • kits of different lengths and widths may be provided for the upper part O and lower part U, whereby the device according to the invention can also be adapted to coaters with other roll diameters without much effort.
  • the walls of the nozzle body 12 and 12 a are bent or as in the FIG. 1 shown, bent in the direction towards the roller. This design makes it possible that the device altogether manages with low overall height and therefore has better stability.
  • this flow slows down the flow of the medium in the metering gap 9 or 9a, thereby making it even more uniform.
  • this construction allows effective nip-inlet protection.
  • the upper part of the nozzle body (also the nozzle lips could be so made) made of stainless sheet metal and provided only with individual stiffening ribs 16 and 16 a, whereby the whole device is relatively easy to build.
  • pivoting means 17 and 17a are provided in the selected example, with which on the one hand, the position of the nozzle body is adjustable with its nozzle opening.
  • the entire feeding device can be pivoted away from the rollers or, better said, from the gussets Z and Za with the sump 6 or 6a, in the case of non-treatment of the web or when the rollers have to be cleaned or replaced. A complete dismantling of the device is often no longer necessary.
  • FIGS. 1 and 2 shown apparatus is provided for two-sided, usually simultaneous order on both sides of the web. 3
  • only one-sided application is provided on only one of the two sides of the web 3.
  • the right (mirror image) half of the picture all parts of the device are supplemented with "a”.
  • the parts of the left or the right half of the image can either be left out entirely or simply swiveled away.

Abstract

The invention relates to a device for the application of a liquid medium onto at least one side of a moving material web, specifically a cardboard web, including at least one roll and at least one feed device for the coating medium, whereby during operation of the device a liquid sump forms between the roll and the web. Nozzle lips of a nozzle body of the feed device are configured so that the desired dimension of the open surface of the liquid sump and the depth of immersion of the nozzle lips into the liquid sump, and thereby the level of the liquid sump are adjustable. The nozzle lips are surrounded up to 80% of their total length by the liquid sump.

Description

Die Erfindung betrifft eine Vorrichtung zum Auftragen eines flüssigen Mediums auf eine laufende Warenbahn, insbesondere Kartonbahn, mit den im Oberbegriff des Anspruches 1 angegebenen Merkmalen.The invention relates to a device for applying a liquid medium to a moving web, in particular board web, with the features specified in the preamble of claim 1.

Gattungsgemäße Vorrichtungen dienen dem Zweck, beim Herstellen, Verarbeiten oder Veredeln einer Faserstoffbahn, z.B. aus Papier oder Karton, diese mit einem flüssigen Medium zu imprägnieren und/oder zu beschichten.
Als Auftragsmedium wird dazu Leim, Stärke oder eine Farbpigment-haltige Suspension bzw. Dispersion verwendet.
Mit dieser Behandlung der Bahn sollen bestimmte Eigenschaften der Bahn verändert und verbessert werden.Generic devices serve the purpose of producing, processing or finishing a fibrous web, for example of paper or cardboard, to impregnate them with a liquid medium and / or to coat.
The application medium used is glue, starch or a color pigment-containing suspension or dispersion.
With this treatment of the web certain properties of the web are to be changed and improved.

Im Voith- Druck p 2745, Abb.1 ist eine sogenannnte Leimpresse beschrieben. Die Leimpresse besteht aus zwei parallelen Walzen, die einen von der Papierbahn durchlaufenen Nip bilden. Zwischen der Bahn und jeder der beiden Walzen besteht im Betrieb der Vorrichtung ein Flüssigkeitssumpf, so dass die Bahn gleichzeitig von beiden Seiten her imprägniert wird.In Voith pressure p 2745, Fig.1 is a so-called size press described. The size press consists of two parallel rolls, which form a nip traversed by the paper web. During operation of the device, a liquid sump exists between the web and each of the two rolls, so that the web is simultaneously impregnated from both sides.

Diese Vorrichtung hat den Nachteil, dass mit zunehmender Bahngeschwindigkeit die in dem Flüssigkeitssumpf vorhandene Flüssigkeit sehr hohen Turbulenzen ausgesetzt ist und die Flüssigkeit in die Umgebung (z.B. auf Vorrichtungsteile und auf die Bahn) abspritzt, wodurch ein gleichmäßiger Auftrag auf die Bahn nicht mehr möglich ist.This device has the disadvantage that with increasing web speed, the liquid present in the liquid sump is exposed to very high turbulence and the liquid in the environment (for example on device parts and on the web) squirts, whereby a uniform application to the web is no longer possible.

Mit der, in der DE 29513970 beschriebenen Vorrichtung wurde versucht, mit Hilfe von Verdränger- bzw. Beruhigungskörpem, die jeweils in den Sumpf eintauchen, das Spritzen zu vermeiden.
Diese Vorrichtung hat sich in der Praxis allerdings nicht als völlig zufriedenstellend erwiesen.With the, in the DE 29513970 The device described was attempted to avoid spraying with the help of displacing bodies, which in each case dip into the sump.
However, this device has not proven to be completely satisfactory in practice.

Aus der DE 29610446 sind bereits Auftragsmedien-Zufuhrungseinrichtungen bekannt, die jeweils nur teilweise in den Sumpf eintauchen.From the DE 29610446 are already known order media supply devices, each of which is only partially immersed in the sump.

Auch aus der US 4,358,484 sowie der US 4,407,224 ist jeweils ein Verfahren und eine Vorrichtung bekannt mit in den Sumpf eintauchenden Zuführeinrichtungen. Die Zufuhreinrichtung besteht jeweils aus einem Hauptverteilrohr mit verteilt über seine gesamte Länge angeordneten Abgabeöffnungen, die ihrerseits mit einem Fließkanal zur Ausbildung des Sumpfes verbunden sind. Der Fließkanal ist Teil eines Düsenkörpers.
Der Düsenkörper besteht aus parallelen Wänden, die über die gesamte Breite der Vorrichtung reichen. An diese Wände angebrachte Düsenlippen tauchen in den Sumpf ein.
Der Düsenkörper ist mittig von einer Wand geteilt in besagten Fließkanal zur Versorgung des Sumpfes und in einen weiteren kanal zum Abzug des Mediums aus dem Sumpf mittels Vakuum zur Ausbildung eines Reservoirs. Im Kreislauf wird Medium aus dem Reservoir dem Sumpf zugeführt und wieder abgezogen.Also from the US 4,358,484 as well as the US 4,407,224 In each case a method and a device are known with dipping into the sump feeders. The supply device consists in each case of a Hauptverteilrohr distributed over its entire length arranged discharge openings, which in turn are connected to a flow channel for forming the sump. The flow channel is part of a nozzle body.
The nozzle body consists of parallel walls which extend over the entire width of the device. Nozzle lips attached to these walls sink into the sump.
The nozzle body is centrally divided by a wall in said flow channel for supplying the sump and in another channel for withdrawing the medium from the sump by means of vacuum to form a reservoir. In the circulation medium from the reservoir is fed to the sump and withdrawn again.

Mit diesen Lösungen möchte man die Tiefe des Sumpfes so gering wie möglich halten, damit Abspritzungen und große Turbulenzen vermieden werden.With these solutions you want to keep the depth of the sump as low as possible, so that Abspritzungen and large turbulence can be avoided.

Die Vorrichtungen sind allerdings recht aufwändig gestaltet, zumal am Abzugskanal noch ein Sammelraum vorhanden ist aus dem das Medium in das Reservoir gepummt werden muss. Darüberhinaus ist die gesamte Vorrichtung fest installiert.However, the devices are quite elaborately designed, especially since the exhaust duct still a collection space is available from which the medium must be pumped into the reservoir. In addition, the entire device is permanently installed.

Im Falle eines Walzenwechsels muss die gesamte Vorrichtung abgebaut und ausgetauscht werden, was zwangsläufig sehr arbeits- und kostenintensiv ist.In the case of a roll change, the entire device must be dismantled and replaced, which is inevitably very laborious and costly.

Der Erfindung liegt daher die Aufgabe zugrunde, die im Oberbegriff genannte Vorrichtung zu verbesseren hinsichtlich einfacherer Reinigungsmöglichkeit, einfacherer Bedienbarkeit und leichterer Anpassung an gegebene Situationen bei weitgehender Vermeidung von Abspritzungen aus dem Sumpf.The invention is therefore based on the object to improve the device mentioned in the preamble in terms of easier cleaning ability, ease of use and easier adaptation to given situations while largely avoiding sprays from the sump.

Die Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Anspruches 1 genannten Merkmale gelöst.The object is achieved by the features mentioned in the characterizing part of claim 1.

Erfindungsgemäß ist der Düsenkörper vom Nip ausgehend nach außen hin, abgeknickt oder gebogen. Dabei ist die Form so gewählt, dass in etwa eine an die Walzen angenäherte Form erreicht wird. Dabei ist der untere Teil des Düsenkörpers auch an die Form des, zwischen der Walze und der sich abstützenden laufenden Warenbahn bestehenden, Zwickels ( der vom Sumpf gefüllt ist) angepasst.According to the invention, the nozzle body is starting from the nip outwards, bent or bent. In this case, the shape is chosen so that in approximately an approximate shape to the rollers is achieved. In this case, the lower part of the nozzle body is also adapted to the shape of, between the roller and the supporting running web existing gusset (which is filled by the sump) adapted.

Denkbar in diesem Zusammenhang ist, dass der Düsenkörper mit einen Gelenk versehen ist, um den gewünschten Abbiegewinkel einstellen zu können.It is conceivable in this connection that the nozzle body is provided with a joint in order to be able to set the desired bending angle.

Diese oben genannte Bauform hat unter anderen den Vorteil, dass die Vorrichtung sehr kompakt ist. Sie zeichnet sich durch eine niedrige Bauhöhe aus und gewährt dem Bedienpersonal dennoch eine ausreichend gute Sicht auf die Walze bzw. Walzen der sogenannten Leim- bzw. Filmpresse und die Bahn.
Im Hinblick auf die Arbeitssicherheit bietet aber vor allem diese gesamte Bauform einen besonders guten Nipeinlaufschutz für das Bedienpersonal.This above-mentioned design has among others the advantage that the device is very compact. It is characterized by a low height and still gives the operator a sufficiently good view of the roller or rollers of the so-called glue or film press and the web.
In terms of safety but above all this entire design provides a particularly good Nipeinlaufschutz for the operating personnel.

Ein Erfinder hat auch erkannt, dass in Anbetracht der heutzutage gefahrenen hohen Arbeits- d.h. Bahngeschwindigkeiten nicht eine geringe Tiefe des Sumpfes ausschlaggebend ist für ein abspritzungsfreies Arbeiten und einen gleichmäßigen Auftrag, sondern es vielmehr nötig ist, nur eine Reduzierung der Sumpfoberfläche vorzunehmen.
Es ist überraschend, dass es sogar vorteilhaft ist, die Sumpfstauhöhe ansteigen zu lassen. Dadurch wird eine längere Verweilzeit der Bahn im Sumpf (ohne dass die Bahn durchweicht und/oder abreißt) erreicht und deshalb sogar eine bessere Penetration und Gleichmäßigkeit des Auftrages erzielt.An inventor has also recognized that in view of the high working speeds that are currently used, ie, web speeds, not a small depth of the sump is crucial for non-spill work and uniform application, but rather, only a reduction of the sump surface is required.
It is surprising that it is even advantageous to increase the sump damming height. This achieves a longer residence time of the web in the sump (without the web soaking and / or tearing off) and therefore even better penetration and uniformity of the job.

Durch speziell an die Sumpf- Querschnittsform in Form und Größe angepasste, aus einem Baukastensystem auswählbare Düsenlippen, kann die gewünschte Größe der freien Oberfläche des Sumfes eingestellt werden.By specially adapted to the sump cross-sectional shape in shape and size, selectable from a modular system nozzle lips, the desired size of the free surface of the sump can be adjusted.

Die Düsenlippen sind zweckmäßigerweise aus einem Kunststoff gefertigt. Sie lassen sich leicht in beliebiger Form und Größe herstellen und auf einfache Weise an die Wände des Düsenkörpers anschrauben oder auch anklippen.
In Versuchen hat sich eine Eintauchtiefe von bis zu ca. 80% der Höhe (bzw. Länge) der Düsenlippen als am effektivsten für eine Spritzvermeidung und Gleichmäßigkeit des Auftrages bzw. Imprägnierung der Bahn erwiesen.The nozzle lips are suitably made of a plastic. They can be easily produced in any shape and size and easily screwed to the walls of the nozzle body or cling.
In experiments, an immersion depth of up to about 80% of the height (or length) of the die lips has proven to be most effective for spray avoidance and uniformity of application or impregnation of the web.

Besonders vorteilhaft ist es, wenn die gesamte Zufuhreinrichtung mit einer Schwenkeinrichtung verbunden ist. Dadurch kann die Zufuhreinrichtung vom Nip abgeschwenkt werden, so dass einerseits genügend Platz verbleibt, um die Walze bzw, die Walzen zu reinigen und andererseits braucht die Vorrichtung nicht entfernt zu werden, wenn eine der Walzen oder beide Walzen ausgetauscht werden müssen. Die Schwenkeinrichtung sollte deshalb für den zuletzt genannten Fall getrennt von der Walzenlagerung abgestützt sein.It is particularly advantageous if the entire supply device is connected to a pivoting device. As a result, the supply device can be pivoted away from the nip so that on the one hand there is sufficient space to clean the roller or rollers and, on the other hand, the device need not be removed if one of the rollers or both rollers has to be replaced. The pivoting device should therefore be separated from the latter case by be supported by the roller bearing.

Es soll noch erwähnt werden, dass bei einseitigem Auftrag nur auf einer Seite die erfindungsgemäße Vorrichtung angeordnet ist bzw. wirkt. Bei beidseitigem Auftrag sind zu beiden Seiten der Warenbahn erfindungsgemäße Vorrichtungen vorhanden. Außerdem soll noch Erwähnung finden, dass anstelle von Walzen auch andere Stützelemente, wie beispielsweise laufende, flexible Endlos-Bänder vorgesehen sein können.It should also be mentioned that with one-sided application the device according to the invention is arranged or acts only on one side. In the case of a two-sided application, devices according to the invention are present on both sides of the material web. In addition, it should also be mentioned that instead of rollers, other support elements, such as running, flexible endless belts can be provided.

Zweckmäßig ist es, wenn die von den Düsenlippen des Düsenkörpers gebildete Düse das an den Sumpf abgebende Auftragsmedium direkt nach unten, also in Richtung der Spitze des Zwickels, abgibt. Damit wird sichergestellt, dass das Auftragsmedium bis an den tiefsten Punkt des Zwickels gelangt und dadurch im Nip zuverlässig in die Warenbahn eingepresst werden kann.It is expedient if the nozzle formed by the nozzle lips of the nozzle body discharges the application medium dispensing to the sump directly downwards, ie in the direction of the tip of the gusset. This ensures that the application medium reaches the lowest point of the gusset and can thus be reliably pressed into the fabric web in the nip.

Das aus der Düse austretende Medium, die Walzen bzw. Stützbänder und auch die laufende Warenbahn haben dieselbe Laufrichtung, wodurch bei besonders hohen Betriebsgeschwindigkeiten dennoch Wirbelbildungen auftreten können, die das Auftragsergebnis unter Umständen negativ beeinträchtigen können.The emerging from the nozzle medium, the rollers or support belts and also the running web have the same direction, whereby at very high operating speeds nevertheless vortex formations may occur, which may adversely affect the order result under certain circumstances.

Deshalb kann eine weitere zweckmäßige Lösung in der Ausbildung der Düse als Pralldüse bestehen. Durch Anordnung einer strömungsgünstig geformten Prall-Leiste in geringem Abstand unterhalb der Austrittsöffnung wird das ankommende Auftragsmedium in radialer Richtung umgelenkt.
Mit den auf diese Weise erzeugten Querströmungen lassen sich die unerwünschten Wirbelbildungen reduzieren.Therefore, there may be another expedient solution in the formation of the nozzle as a baffle. By arranging a streamlined shaped baffle bar at a small distance below the outlet opening the incoming application medium is deflected in the radial direction.
With the cross flows generated in this way, the unwanted eddies can be reduced.

Weitere zweckmäßige Ausbildungen der Erfindung ergeben sich aus den Unteransprüchen.Further expedient embodiments of the invention will become apparent from the dependent claims.

Die Erfindung soll nachstehend anhand eines Ausführungsbeispieles näher erläutert werden.The invention will be explained below with reference to an exemplary embodiment.

Es zeigen:

  • die Figur 1 :
    • im Querschnitt gesehen die Walzen einer Leimpresse mit der
    • erfindungsgemäßen Zufuhreinrichtung und einer ersten Variante einer Düse
  • die Figur 2 :
    • im Querschnitt gesehen eine zweite Ausführungsform der erfindungsgemäßen Düse (Detaildarstellung)
Show it:
  • the FIG. 1 :
    • seen in cross-section, the rollers of a size press with the
    • Feed device according to the invention and a first variant of a nozzle
  • the FIG. 2 :
    • seen in cross section a second embodiment of the nozzle according to the invention (detailed representation)

In der Figur 1 sind zwei Walzen 1 und 1a dargestellt, die miteinander einen von der Kartonbahn 3 durchlaufenen Nip (Press-Spalt) 4 bilden.
Die Bahn 3 durchläuft den Nip 4 im Wesentlichen von oben nach unten, wobei auch ein Einlaufwinkel der Bahn in den Nip einstellbar, aber nicht dargestellt ist.In the FIG. 1 two rolls 1 and 1a are shown, which together form a nip (press nip) 4 passed through by the cardboard web 3.
The web 3 passes through the nip 4 substantially from top to bottom, wherein also an entry angle of the web in the nip is adjustable, but not shown.

Im gewählten Beispiel ist zu beiden Seiten der Bahn 3 je eine Auftragsmediums-Zufuhreinrichtung 5 und 5a für ein simultanes, beidseitiges Auftragen des flüssigen Mediums, wie Stärke, auf die Bahn 3 vorhanden. Zwischen der jeweiligen Bahnseite und jeder der Walzen 1 und 1a befindet sich ein sogenannter Zwickel Z bzw. Za. In diesem Zwickel Z und Za bildet sich beim Betrieb der Vorrichtung ein Sumpf 6 und 6a aus, mit dem die Bahn 3 beschichtet wird (je nach verwendetem Medium und dem Charakter der Bahn wird imprägniert, geleimt oder gestrichen).In the example chosen, a coating medium supply device 5 and 5a is provided on both sides of the web 3 for a simultaneous, double-sided application of the liquid medium, such as starch, to the web 3. Between the respective web side and each of the rollers 1 and 1a there is a so-called gusset Z or Za. In this gusset Z and Za forms during operation of the device, a sump 6 and 6a, with which the web 3 is coated (depending on the medium used and the character of the web is impregnated, glued or painted).

Die Zufuhreinrichtung 5 und 5a besteht im gewählten Beispiel aus einem Hauptverteilrohr 7 bzw. 7a. Dieses Hauptverteilrohr ist maschinenbreit ausgeführt und empfängt das Auftragsmedium in dessen Stirnseiten.
In das Hauptverteilrohr 7 und 7a münden jeweils eine Vielzahl von gebogenen Einzelverteilrohren 8 bzw. 8a, die gleichmäßig über die Länge des Hauptverteilrohres angeordnet sind. Über diese Rohre 8 und 8a können ganz gezielte Mengen von Auftragsmedium in jeweils einen Dosierspalt 9 und 9a eingespeist werden, so dass ein gleichmäßiger Zulauf über die gesamte Bahnbreite und damit eine gleichmäßige Druckverteilung möglich ist.In the example chosen, the supply device 5 and 5a consists of a main distribution pipe 7 or 7a. This Hauptverteilrohr is designed machine-wide and receives the application medium in the end faces.
In the Hauptverteilrohr 7 and 7a each open a plurality of curved Einzelverteilrohren 8 and 8a, which are arranged uniformly over the length of the Hauptverteilrohres. Through these tubes 8 and 8a quite targeted amounts of application medium can be fed into a respective metering gap 9 and 9a, so that a uniform feed over the entire web width and thus a uniform pressure distribution is possible.

Ein Abdeckblech 18 und 18a schützt die Verteilrohre 8 und 8a gegen Verschmutzung. Außerdem ergibt sich dadurch eine sehr geschlossene, kompakte Bauweise von gutem Design.A cover plate 18 and 18a protects the distribution pipes 8 and 8a against contamination. In addition, this results in a very closed, compact design of good design.

Der Dosierspalt 9 und 9a befindet sich im Zwischenraum von parallelen, über die gesamte Breite der Vorrichtung reichenden Wänden 10 und 10a sowie 11 und 11a, wobei jeweils die Wände 10 und 11 einen Düsenkörper 12 und die Wände 10a und 11a einen Düsenkörper 12a bilden.The metering gap 9 and 9a is located in the space of parallel, across the entire width of the device reaching walls 10 and 10a and 11 and 11a, wherein each of the walls 10 and 11 a nozzle body 12 and the walls 10a and 11a form a nozzle body 12a.

Der untere Teil des Düsenkörpers 12 und 12a, das ist jener Teil, der in den Sumpf 6 und 6a eintaucht, besteht aus speziell geformten, zweckmäßigerweise zueinander konvergierenden Düsenlippen 13 und 14 bzw. 13a und 14a.The lower part of the nozzle body 12 and 12a, that is the part that dips into the sump 6 and 6a, consists of specially shaped, suitably converging nozzle lips 13 and 14 or 13a and 14a.

Diese Düsenlippen lassen an ihrem unteren freien Ende zwischen sich jeweils eine Düsenöffnung 15 und 15a frei, aus der das Auftragsmedium nach unten gerichtet bis in die Spitze des Zwickels Z und Za gelangt und dabei den Sumpf 6 und 6a bildet bzw. aufrecht erhält.These die lips leave at their lower free end between them a respective nozzle opening 15 and 15a free, from which the application medium directed downwards reaches into the tip of the gusset Z and Za, while the sump 6 and 6a forms or maintains.

Die Figur 2 stellt eine zweite Ausführungsform der Düse 15 bzw.15a dar.
Der übrige Aufbau der Auftragsvorrichtung gemäß dieser zweiten Variante ist ansonsten grundsätzlich gleich mit der Ausführung gemäß Figur 1. Es wurden deshalb auch dieselben Bezugszeichen beibehalten.
In Figur 2 ist dargestellt, dass das Auftragsmedium mittels einer strömungsgünstig geformten Prall-Leiste 20 bzw.20a umgelenkt wird. Die Düsenöffnungen 15 bzw. 15a kann man dadurch als Querströmöffnungen bezeichnen, aus denen das Medium jeweils radial in Richtung der zu behandelnden Warenbahn und der Walze 1 bzw.1a abgegeben wird.
Auch in der Figur 2 sind die Strömungsrichtungen mit kleinen Pfeilen dargestellt.The FIG. 2 illustrates a second embodiment of the nozzle 15 bzw.15a.
The rest of the construction of the applicator device according to this second variant is otherwise basically the same as the embodiment according to FIG FIG. 1 , Therefore, the same reference numerals have been retained.
In FIG. 2 It is shown that the application medium is deflected by means of a streamlined shaped impact bar 20 bzw.20a. The nozzle openings 15 and 15a can be characterized as transverse flow openings, from which the medium is dispensed radially in each case in the direction of the material web to be treated and the roll 1 or 1a.
Also in the FIG. 2 the flow directions are shown with small arrows.

Wirbelbildungen im Sumpf sind bei Anwendung der zweiten Düsen-Ausführungsform weiter reduzierbar.Swirling in the sump can be further reduced by using the second nozzle embodiment.

Die Leiste 20, 20a ist in vorteilhafter, strömungstechnisch günstigen Weise konisch geformt und am zur Zwickelspitze zeigenden Ende abgerundet. Diese Leiste ist entweder Teil des kompletten Düsenkörpers 12 und 12a, oder Teil einer einzelnen Düsenlippe 13, 13a, 14 oder 14a, oder ein separat angeordnetes Bauteil.The strip 20, 20a is conically shaped in an advantageous, aerodynamically favorable manner and rounded off at the end pointing to the gusset tip. This strip is either part of the complete nozzle body 12 and 12a, or part of a single nozzle lip 13, 13a, 14 or 14a, or a separately arranged component.

Je nachdem, wie die einzelnen Düsenlippen in ihrem Querschnitt bzw. ihrer Form ausgebildet und an den Wänden 9, 10 bzw. 9a und 10a befestigt sind, lässt sich die Größe der freien Oberfläche des Sumpfes 6 bzw. 6a sowie auch die Eintauchtiefe der Düsenlippen einstellen. Das bedeutet, dass je nachdem, wie tief die Düsenlippen in den Sumpf eintauchen, der Pegelstand des Sumpfes angehoben oder gesenkt werden kann. Bei höherem Pegelstand wird eine bessere Penetration auf Grund der längeren Verweilzeit erreicht. Die Eintauchtiefe kann bis zu 80 % der Gesamtlänge der Düsenlippen betragen. Trotz eines höheren Pegelstandes sind unerwünschte Turbulenzen und Abspritzungen aus der Vorrichtung stark reduzierbar.Depending on how the individual nozzle lips are formed in their cross-section or their shape and attached to the walls 9, 10 or 9a and 10a, the size of the free surface of the sump 6 and 6a and also the immersion depth of the nozzle lips can be adjusted , This means that depending on how deep the die lips dip into the sump, the level of the sump can be raised or lowered. At a higher water level, a better penetration due to the longer residence time is achieved. The immersion depth can reach up to 80% of the total length the die lips amount. Despite a higher water level unwanted turbulence and Abspritzungen from the device are greatly reduced.

In der Figur 1 ist zur Verdeutlichung der Pegelstand gemäß dem Stand der Technik mit Pb (für Pegelstand bisher) und der erfindungsgemäß eingestellte Pegelstand mit P bezeichnet.In the FIG. 1 is to clarify the water level according to the prior art, with Pb (for P egelstand Isher b) and the present invention set water level designated by P.

Die Düsenlippen sind aus Kunststoff in verschiedenen Größen gefertigt. Sie sind leicht herstell - und lagerbar, einfach reinigbar, unempfindlich gegenüber Korrosion und von nur geringem Gewicht.The die lips are made of plastic in different sizes. They are easy to prepare and store, easy to clean, insensitive to corrosion and of low weight.

Aus der Figur 1 ist weiterhin entnehmbar, dass der Düsenkörper 12 bzw.12a, d.h. seine Wände 10, 11 bzw. 10a, 11a zweiteilig - bestehend aus Oberteil O und Unterteil U ausgeführt sind. Oberteil und Unterteil sind lösbar, z.B. durch Verschrauben, oder auch gelenkig miteinander verbunden.
An das Unterteil U sind die Düsenlippen 13 und 14 bzw. 13a, 14a angebracht.From the FIG. 1 is further removed that the nozzle body 12 bzw.12a, ie its walls 10, 11 and 10a, 11a in two parts - are made of upper part O and lower part U. Upper part and lower part are detachable, for example by screwing, or hinged together.
To the lower part U, the nozzle lips 13 and 14 and 13a, 14a are attached.

Diese zweiteilige Ausführung hat Vorteile bei der Herstellung sowie auch bei der Montage, der Demontage oder bei der Reinigung.
Darüberhinaus können für das Oberteil O und Unterteil U Bausätze von verschiedenen Längen und Breiten vorgesehen sein, wodurch sich die erfindungsgemäße Vorrichtung auch an Streichmaschinen mit anderen Walzendurchmessern ohne großen Aufwand anpassen lässt.This two-part design has advantages in the production as well as during assembly, disassembly or cleaning.
In addition, kits of different lengths and widths may be provided for the upper part O and lower part U, whereby the device according to the invention can also be adapted to coaters with other roll diameters without much effort.

Außerdem sind die Wände des Düsenkörpers 12 bzw. 12a gebogen oder wie in der Figur 1 dargestellt, in Richtung zur Walze hin abgeknickt. Diese Ausführung macht es möglich, dass die Vorrichtung insgesamt mit niedriger Bauhöhe auskommt und daher bessere Stabilität aufweist.In addition, the walls of the nozzle body 12 and 12 a are bent or as in the FIG. 1 shown, bent in the direction towards the roller. This design makes it possible that the device altogether manages with low overall height and therefore has better stability.

Außerdem wird durch diese Formgebung der Fluss des Mediums im Dosierspalt 9 bzw. 9a verlangsamt und dadurch weiter vergleichmäßigt.
Darüber hinaus ermöglicht diese Bauförm einen effektiven Nip-Einlauf-Schutz.In addition, this flow slows down the flow of the medium in the metering gap 9 or 9a, thereby making it even more uniform.
In addition, this construction allows effective nip-inlet protection.

Das bedeutet, dass das Bedienpersonal, welches den Arbeitsprozeß überwacht, Walzen reinigt usw., nicht mit Körperteilen oder der Kleidung in den Nip gezogen werden kann.This means that operators monitoring the work process, cleaning rollers, etc., can not be pulled into the nip with body parts or clothing.

Im Übrigen ist das Oberteil des Düsenkörpers (auch die Düsenlippen könnten so beschaffen sein) aus rostfreiem Blech gefertigt und nur mit einzelnen Versteifungsrippen 16 bzw. 16a versehen, wodurch die ganze Vorrichtung relativ leicht gebaut ist.Incidentally, the upper part of the nozzle body (also the nozzle lips could be so made) made of stainless sheet metal and provided only with individual stiffening ribs 16 and 16 a, whereby the whole device is relatively easy to build.

Es ist selbstverständlich möglich, die gesamte Zufuhreinrichtung 5 bzw. 5a fest am Gehäuse der Walzenlagerung zu lagern.It is of course possible to store the entire supply means 5 and 5a fixed to the housing of the roller bearing.

Wie in der Figur 1 dargestellt, sind im gewählten Beispiel Schwenkeinrichtungen 17 bzw. 17a vorhanden, mit denen einerseits die Position des Düsenkörpers mit seiner Düsenöffnung einstellbar ist. Andererseits ist die gesamte Zuführvorrichtung von den Walzen oder besser gesagt, aus dem Zwickel Z und Za mit dem Sumpf 6 bzw. 6a abschwenkbar, im Falle der Nichtbehandlung der Bahn oder wenn die Walzen gereinigt oder ausgewechselt werden müssen. Ein kompletter Abbau der Vorrichtung ist dadurch oftmals nicht mehr nötig.Like in the FIG. 1 represented pivoting means 17 and 17a are provided in the selected example, with which on the one hand, the position of the nozzle body is adjustable with its nozzle opening. On the other hand, the entire feeding device can be pivoted away from the rollers or, better said, from the gussets Z and Za with the sump 6 or 6a, in the case of non-treatment of the web or when the rollers have to be cleaned or replaced. A complete dismantling of the device is often no longer necessary.

Es soll nochmals erwähnt werden, dass die in den Figuren 1 und 2 dargestellte Vorrichtung vorgesehen ist für beidseitigen, in der Regel simultanen Auftrag auf beide Seiten der Bahn 3.
Darüber hinaus ist desöfteren auch nur ein einseitiges Auftragen auf nur eine der beiden Seiten der Bahn 3 vorgesehen. In der rechten (spiegelbildlichen) Bildhälfte sind alle Vorrichtungsteile mit "a" ergänzt.
Bei besagtem einseitigen Auftrag können die Teile der linken oder der rechten Bildhälfte entweder völlig weggelassen oder einfach nur abgeschwenkt werden.It should be mentioned again that in the FIGS. 1 and 2 shown apparatus is provided for two-sided, usually simultaneous order on both sides of the web. 3
In addition, sometimes only one-sided application is provided on only one of the two sides of the web 3. In the right (mirror image) half of the picture, all parts of the device are supplemented with "a".
In the case of said one-sided application, the parts of the left or the right half of the image can either be left out entirely or simply swiveled away.

Es soll außerdem noch erwähnt werden, dass die Zufuhreinrichtung 5 und 5a sowie die Schwenkeinrichtung 17 und 17a unabhängig voneinander betätigbar sind.It should also be mentioned that the supply means 5 and 5a and the pivoting means 17 and 17a are independently operable.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1, 1a1, 1a
Walzeroller
33
Bahntrain
44
Nipnip
5, 5a5, 5a
Zufuhreinrichtungfeeder
6, 6a6, 6a
Sumpfswamp
7, 7a7, 7a
Hauptverteilrohrmain distribution
8, 8a8, 8a
EinzelverteilrohrEinzelverteilrohr
9, 9a9, 9a
Dosierspaltmetering
10, 10a10, 10a
Wandwall
11, 11a11, 11a
Wandwall
12, 12a12, 12a
Düsenkörpernozzle body
13, 13a13, 13a
Düsenlippedie lip
14, 14a14, 14a
Düsenlippedie lip
15, 15a15, 15a
Düsenöffnungnozzle opening
16, 16a16, 16a
Versteifungsrippestiffening rib
17, 17a17, 17a
SchwenkeinrichtungPivot means
18, 1818, 18
AbdeckblechCover plate
20,20a20,20a
Prall-LeisteImpact bar
OO
Oberteiltop
Pbpb
Pegelstand bisherWater level so far
PP
Pegelstand (erfindungsgemäß eingestellt)Level (adjusted according to the invention)
UU
Unterteillower part
Z, ZaZ, Za
Zwickelgore

Claims (10)

  1. Device for applying a liquid medium to at least one side of a moving product web, in particular a board web, comprising
    a) at least one roll (1, 1a) which supports the web (3) ;
    b) at least one feed assembly (5, 5a) for the application medium, a liquid pond (6, 6a) forming between the roll (1, 1a) and the web (3) during the operation of the device,
    c) the at least one feed assembly (5, 5a) having a nozzle body (12, 12a),
    d) the nozzle body being fabricated from parallel machine-width walls (10, 11, 10a, 11a) between which there is a metering gap (9, 9a), which opens into a nozzle opening (15, 15a),
    e) the nozzle body (12, 12a) being provided with nozzle lips (13, 14, 13a, 14a), the nozzle lips (13, 14, 13a, 14a) being fitted to the walls (10, 11, 10a, 11a) of the nozzle body (12, 12a),
    f) the nozzle lips (13, 14, 13a, 14a) with their nozzle opening (15, 15a) dipping into the liquid pond (6, 6a), the immersion depth of the nozzle lips (13, 14, 13a, 14a) being adjustable,
    characterized in that
    g) the nozzle body (12, 12a) is angled over or curved in such a way that it is substantially matched to the cross-sectional shape of the roll (1, 1a).
  2. Device according to Claim 1,
    characterized in that
    the feed assembly (5; 5a) comprises a main distribution pipe (7; 7a), into which there open individual distribution pipes (8; 8a) arranged distributed over the entire machine width, which in turn are connected to the nozzle body (12; 12a).
  3. Device according to Claim 1 and 2,
    characterized in that
    the nozzle lips (13, 14 and 13a, 14a) are configured so as to be replaceable.
  4. Device according to Claims 1 to 3,
    characterized in that
    the nozzle body (12, 12a) is formed in two parts, comprising an upper part (O) and a lower part (U), the upper part and lower part being connected to each other in an articulated manner.
  5. Device according to Claim 3 and 4,
    characterized in that
    the nozzle lips (13, 14; 13a, 14a) are fitted to the lower part (U) of the nozzle body (12, 12a).
  6. Device according to Claims 1 to 5,
    characterized in that
    the nozzle opening (15, 15a) formed by the nozzle lips (13, 14; 13a, 14a) is arranged in such a way that the application medium flows out of the aforesaid nozzle opening (15, 15a) approximately parallel to the direction of movement of the roll (1, 1a) and of the product web (3).
  7. Device according to Claims 1 to 5,
    characterized in that
    the nozzle lips (13, 14; 13a, 14a) form the nozzle opening (15, 15a) together with a baffle strip (20, 20a), so that the application medium leaves the aforesaid nozzle opening (15, 15a) in the form of radial transverse flows.
  8. Device according to one or more of the preceding claims,
    characterized in that
    the feed assembly (5, 5a) is connected to at least one pivoting device (17, 17a).
  9. Device for applying a liquid medium to both sides of a moving product web (3), having the features of one or more of the preceding claims, two rolls (1 and 1a) being provided, which together form a nip (4) through which the web (3) passes, and on both sides of the web (3) there being a second feed assembly (5a), so that a second pond (6a) forms and the two feed assemblies (5, 5a) can be supplied with application medium independently of each other.
  10. Device according to Claim 9,
    characterized in that
    a second pivoting device (17a) is present, it being possible for the two pivoting devices (17, 17a) to be actuated independently of each other.
EP01955224A 2000-07-04 2001-06-29 Application device Expired - Lifetime EP1198643B1 (en)

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DE10032500A DE10032500A1 (en) 2000-07-04 2000-07-04 applicator
PCT/DE2001/002426 WO2002004744A1 (en) 2000-07-04 2001-06-29 Application device

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AT (1) ATE490371T1 (en)
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EP1198643A1 (en) 2002-04-24
DE50115724D1 (en) 2011-01-13
WO2002004744A1 (en) 2002-01-17
ATE490371T1 (en) 2010-12-15
US20020162503A1 (en) 2002-11-07
US6626127B2 (en) 2003-09-30

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