EP0949380A2 - Apparatus for applying directly or indirectly a fluid or pasty medium onto one or both sides of a moving surface - Google Patents

Apparatus for applying directly or indirectly a fluid or pasty medium onto one or both sides of a moving surface Download PDF

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Publication number
EP0949380A2
EP0949380A2 EP99105523A EP99105523A EP0949380A2 EP 0949380 A2 EP0949380 A2 EP 0949380A2 EP 99105523 A EP99105523 A EP 99105523A EP 99105523 A EP99105523 A EP 99105523A EP 0949380 A2 EP0949380 A2 EP 0949380A2
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EP
European Patent Office
Prior art keywords
roller
application
nozzle
coating
medium
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.)
Withdrawn
Application number
EP99105523A
Other languages
German (de)
French (fr)
Other versions
EP0949380A3 (en
Inventor
Anton Plomer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
Voith Sulzer Papiertechnik Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Paper Patent GmbH, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0949380A2 publication Critical patent/EP0949380A2/en
Publication of EP0949380A3 publication Critical patent/EP0949380A3/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • B05C1/0834—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 the coating roller co-operating with other rollers, e.g. dosing, transfer rollers
    • 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
    • B05C1/14—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 travelling band
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades
    • 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
    • D21H23/50—Spraying or projecting
    • 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
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56—Rolls

Definitions

  • the invention relates to a device for direct or indirect, one or both sides Apply a liquid or pasty medium to a running surface according to the preamble of claim 1.
  • roller applicator Such an applicator, called roller applicator, has become known from DE 3605409.
  • Such application unit belongs to the group of the L ong D well T imeApplikatoren, ie applicators with l anger E inwirk z eit.
  • the object of the invention is therefore to apply the application medium with a suitable device, to be distributed evenly across the machine width.
  • the scoop roller of the roller applicator is in the direction of travel of the material web or upstream of the applicator roller, a nozzle applicator.
  • the scoop roller and the nozzle application device are the same application roller or counter roller (in the case of direct application, this is partially wrapped in the paper web) assigned. This results in a compact arrangement that takes up little space requirement.
  • the nozzle applicator can be a free jet nozzle applicator known per se be, as is already known from WO 95/12031, and a machine-wide metering gap having.
  • the nozzle applicator can also be an applicator, where from a variety the application medium from individual nozzles evenly distributed over the width of the machine is applied to the running surface.
  • the arrangement of the nozzles is such that those emerging from the nozzles Radiate on the running surface in their end areas and thus a complete covering of the current surface with the application medium to guarantee.
  • a pre-coat should be applied to the running surface with the nozzle application device provided.
  • the main part of the line is done by the scoop roller. Excess medium applied in this process is then scraped off using doctoring devices known per se.
  • This variant is particularly applicable where such a roller applicator already exists is present in the paper machine or finishing machine.
  • the coating machine easily with the nozzle application device, in particular the Retrofit free jet nozzle applicator.
  • the scoop roller then no longer has to perform its actual function, namely the scooping and application of the application medium.
  • the scoop roller can then be used in the variant with individual application nozzles to equalize or even out the line application. In this way, the overlapping or penetrating end regions of the individual jets in the nip between the scoop roller and the running surface can advantageously be compensated for by rubbing.
  • the roller runs in the opposite direction to the running surface at a lower peripheral speed than this.
  • the scoop roller which is no longer scooping, can run in the same direction (clockwise). In this case, i.e. in the case of equalization, it does not need to be driven at all.
  • the applicator shown in Figure 1 comprises a scoop roller 1, which in one Swamp 2 of application medium M revolves.
  • the swamp is in a trough with Collecting pan 3.
  • the scoop roller 1 is a counter roller as a so-called running surface 4 assigned, which is wrapped in a paper web B. Both rollers 1 and 4 run in opposite directions. Together they form a nip N, in which the application medium is delivered directly to paper web B.
  • a round machine-wide ink feed pipe 7 is selected, into which a large number of individual nozzles 8 arranged distributed over the length of the tube 7 are.
  • a primer can be applied to the paper web B, whereby the bulk of the order is then done with the scoop roller.
  • the whole can also be used with the nozzle application device 6 Stroke can be applied.
  • the scoop roller 1 is not an application medium fed, but it is transformed to a certain extent by the previously applied layer evened out.
  • the scoop roller rotates in the same direction, to achieve a better rubbing effect (see dashed arrow in Figure 1).
  • the scoop roller 1 has a doctor device 5 is subordinate.
  • This is a known device with a doctor blade, a doctor rod or a fixed squeegee bar.
  • Figure 1 is a doctor blade as an example shown the, if necessary, scrapes excess medium from the paper web B. The excess medium is in a collecting trough, not shown in the figure caught and can in the circulatory system the coating process again be fed.
  • FIG. 2 There are two from FIG. 2, in which the indirect application to the paper web is shown Application rollers 10, 10 'can be removed, which together form a nip N through which the Paper web B is running. In this nip, the application medium is transferred to the paper web.
  • Each application roller is assigned a scoop roller 1 or 1 'with a trough 3 or 3'.
  • a nozzle application device 6 or 6 ' is the current one in the running direction Surface (here the application roller 10 or 10 ') in front of the scoop roller in a small amount Spaced from her.
  • FIG. 1 A material web B running upward is shown in FIG.
  • This version shown is only an example and is intended do not limit the scope of the invention.

Abstract

The nozzle unit (6) of a coating unit is directed along the running direction of the free surface of the immersed coating roller, towards the nip. PREFERRED FEATURES:- The coating unit has an open-jet, single-slot nozzle extending over the entire width of the equipment. A similar variant employs a row of individual nozzles. The nozzle pre-coats the running surface (B), the immersed coating roller applying the main coating. Alternatively only the nozzle forms the coating, the immersed roller merely leveling the coating. The immersed roller rotates with or against the surface travel. It may not be driven at all. The nozzle sprays the surface of the immersed roller. The immersed roller carries an endless intervening belt running around idlers, the nozzle spraying the belt in this case.

Description

Die Erfindung betrifft eine Vorrichtung zum direkten oder indirekten, ein- oder beidseitigen Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Oberfläche gemäß dem Oberbegriff des Anspruches 1.The invention relates to a device for direct or indirect, one or both sides Apply a liquid or pasty medium to a running surface according to the preamble of claim 1.

Ein solches Auftragswerk, Walzenauftragswerk genannt, ist aus der DE 3605409 bekannt geworden. Ein derartiges Auftragswerk gehört zur Gruppe der Long Dwell TimeApplikatoren, d.h. Auftragswerke mit langer Einwirkzeit.Such an applicator, called roller applicator, has become known from DE 3605409. Such application unit belongs to the group of the L ong D well T imeApplikatoren, ie applicators with l anger E inwirk z eit.

Mit der Schöpfwalze wird eine relativ große Menge des Auffragsmediums auf die laufende Oberfläche, also die Auftragswalze oder die Materialbahn aufgebracht. Die Menge ist um so größer, je größer der Durchmesser der Schöpfwalze und deren Geschwindigkeit ist. Von der Geschwindigkeit her sind aber Grenzen gesetzt, wegen der mit zunehmender Geschwindigkeit steigenden Abspritzgefahr.With the scoop roller, a relatively large amount of the application medium is applied to the current one Surface, so the application roller or the material web applied. The amount the larger the diameter of the scoop roller and its speed is. There are limits to the speed, however, because of the increasing Speed increasing splashing risk.

Kann aus baulichen Gegebenheiten nur eine relativ kleine Schöpfwalze eingesetzt werden, reicht oftmals die Schöpfwirkung nicht aus, um einen gleichmäßigen Strich auf der Materialbahn zu erzeugen.Can only use a relatively small scoop roller for structural reasons , the scooping effect is often not sufficient to create an even line to generate the material web.

Aufgabe der Erfindung ist es deshalb, das Auftragsmedium mit einer geeigneten Vorrichtung, über die Maschinenbreite hinweg, gleichmäßig zu verteilen.The object of the invention is therefore to apply the application medium with a suitable device, to be distributed evenly across the machine width.

Die Aufgabe wird durch die kennzeichnenden Merkmale von Anspruch 1 gelöst.The object is achieved by the characterizing features of claim 1.

Demgemäß ist der Schöpfwalze des Walzenauftragswerkes in Laufrichtung der Materialbahn oder der Auftragswalze eine Düsenauftragseinrichtung vorgeschaltet. Accordingly, the scoop roller of the roller applicator is in the direction of travel of the material web or upstream of the applicator roller, a nozzle applicator.

Die Schöpfwalze sowie die Düsenauftragseinrichtung sind derselben Auftragswalze oder Gegenwalze (bei direktem Auftrag ist diese von der Papierbahn teilweise umschlungen) zugeordnet. Damit ergibt sich eine kompakte Anordnung, die wenig Platz bedarf.The scoop roller and the nozzle application device are the same application roller or counter roller (in the case of direct application, this is partially wrapped in the paper web) assigned. This results in a compact arrangement that takes up little space requirement.

Die Düsenauftragseinrichtung kann ein an sich bekanntes Freistrahldüsenauftragswerk sein, wie es aus der WO 95/12031 bereits bekannt ist und einen maschinenbreiten Dosierspalt aufweist.The nozzle applicator can be a free jet nozzle applicator known per se be, as is already known from WO 95/12031, and a machine-wide metering gap having.

Das Düsenauftragswerk kann aber auch ein Auftragswerk sein, wo aus einer Vielzahl von über die Breite der Maschine gleichmäßig verteilten Einzeldüsen das Auftragsmedium auf die laufende Oberfläche aufgetragen wird.The nozzle applicator can also be an applicator, where from a variety the application medium from individual nozzles evenly distributed over the width of the machine is applied to the running surface.

Eine solche Einzeldüsenauftragseinrichtung ist in der noch unveröffentlichten Anmeldung der Anmelderin unter Nr. DE 197 22 159.9 beschrieben.Such an individual nozzle application device is in the as yet unpublished application described by the applicant under No. DE 197 22 159.9.

Hierbei ist die Anordnung der Düsen so getroffen, daß die aus den Düsen austretenden Strahlen sich auf der laufenden Oberfläche in deren Endbereichen durchdringen und somit eine vollständige Bedeckung der laufenden Oberfläche mit dem Auftragsmedium garantieren.Here, the arrangement of the nozzles is such that those emerging from the nozzles Radiate on the running surface in their end areas and thus a complete covering of the current surface with the application medium to guarantee.

Gemäß der vorliegenden Erfindung soll zum einen mit der vorgesehenen Düsenauftragseinrichtung nur ein Vorstrich auf die laufende Oberfläche aufgebracht werden. Den Hauptanteil des Striches leistet die Schöpfwalze.
Hierbei aufgetragenes überschüssiges Medium wird anschließend mit an sich bekannten Rakeleinrichtungen abgerakelt.According to the present invention, on the one hand, only a pre-coat should be applied to the running surface with the nozzle application device provided. The main part of the line is done by the scoop roller.
Excess medium applied in this process is then scraped off using doctoring devices known per se.

Dadurch wird ein noch gleichmäßigerer Strichauftrag als bisher in Quer- und Längsrichtung der Materialbahn bestehend aus dünnen Vorstrich und relativ geringem Hauptstrich (auf Grund der verminderten Schöpfwirkung bei keinem Durchmesser der Schöpfwalze mit z.B. 350 mm), sichergestellt. This will result in an even smoother stroke application than previously in the transverse and longitudinal directions the material web consisting of a thin primer and a relatively small main coat (due to the reduced scooping effect with no diameter of the Scoop roller with e.g. 350 mm).

Diese Variante ist besonders dort anwendbar, wo bereits ein derartiges Walzenauftragswerk in der Papiermaschine oder Veredelungsmaschine vorhanden ist. Hier läßt sich die Streichmaschine leicht mit der Düsenauftragseinrichtung, insbesondere dem Freistrahldüsenauftragswerk nachrüsten.This variant is particularly applicable where such a roller applicator already exists is present in the paper machine or finishing machine. Here leaves the coating machine easily with the nozzle application device, in particular the Retrofit free jet nozzle applicator.

Wird ein Auftrag mit Einzeldüsen bevorzugt, ist es zum anderen möglich und zweckmäßig mit dieser Einrichtung den gesamten Strichauftrag durchzuführen, weil wie schon vorstehend beschrieben, auf Grund der sich überlagernden Endbereiche der Einzeldüsenstrahlen allein schon eine ausreichende Abdeckung der Materialbahn gesichert ist.If an order with individual nozzles is preferred, it is also possible and expedient to carry out the entire stroke application with this device, because how already described above, due to the overlapping end regions of the Individual nozzle jets alone ensure adequate coverage of the material web is.

Bei bereits in der Papier- oder Veredelungsmaschine vorhandenen Walzenauftragswerken braucht dann die Schöpfwalze ihrer eigentlichen Funktion, nämlich das Schöpfen und Auftragen des Auftragsmediums, nicht mehr nachkommen. Die Schöpfwalze kann dann also bie der variante mit Einzelauftragsdüsen zur Egalisierung bzw. Vergleichmässigung des Strichauftrages eingesetzt werden.
Damit können in vorteilhafter Weise sich die überlappenden bzw. durchdringenden Endbereiche der Einzelstrahlen im Nip zwischen Schöpfwalze und der laufenden Oberfläche durch Verreiben ausgeglichen werden.In the case of roller applicators already present in the paper or finishing machine, the scoop roller then no longer has to perform its actual function, namely the scooping and application of the application medium. The scoop roller can then be used in the variant with individual application nozzles to equalize or even out the line application.
In this way, the overlapping or penetrating end regions of the individual jets in the nip between the scoop roller and the running surface can advantageously be compensated for by rubbing.

Im Falle des Schöpfens der Schöpfwalze für die Hauptmenge des Auftrages läuft die Walze gegensinnig zur laufenden Oberfläche mit geringerer Umfangsgeschwindigkeit als diese. Im Falle des "nur" Verreibens der mit der Düsenauftragseinrichtung aufgebrachten Schicht kann die Schöpfwalze, die nun nicht mehr schöpft, gleichsinnig (im Uhrzeigersinn) laufen.
In diesem Fall, also im Falle der Egalisierung, braucht sie auch gar nicht angetrieben sein. In the case of scooping the scoop roller for the bulk of the order, the roller runs in the opposite direction to the running surface at a lower peripheral speed than this. In the case of "only" rubbing the layer applied with the nozzle application device, the scoop roller, which is no longer scooping, can run in the same direction (clockwise).
In this case, i.e. in the case of equalization, it does not need to be driven at all.

Es versteht sich, daß bei einem Neubau einer Streichanlage anstelle der Schöpfwalze ein an sich bekannter Rakelstab, insbesondere einer mit großem Durchmesser und glatter Oberfläche für die Egalisierung der aufgetragenen Schicht eingesetzt werden kann.It goes without saying that when building a coating system instead of the scoop roller a doctor bar known per se, in particular one with a large diameter and smooth surface can be used for leveling the applied layer can.

Anhand eines Ausführungsbeispieles soll die Erfindung näher erläutert werden.The invention will be explained in more detail using an exemplary embodiment.

In den Figuren ist dargestellt:

  • Figur 1:
    Die erfindungsgemäße Vorrichtung in schematischer Darstellung in Seitenansicht für direktes Auftragen.
  • Figur 2:
    Eine schematische Darstellung in Seitenansicht der erfindungsgemäßen Vorrichtung für indirektes Auftrages auf beide Seiten der Materialbahn.
    • The figures show:
  • Figure 1:
    The device according to the invention in a schematic representation in side view for direct application.
  • Figure 2:
    A schematic representation in side view of the device according to the invention for indirect application on both sides of the material web.

    • In den Figuren sind mit gleichen Bezugszeichen gleiche Bauteile beziffert.In the figures, the same components are numbered with the same reference numerals.

    Das in Figur 1 dargestellte Auftragswerk umfaßt eine Schöpfwalze 1, die in einem Sumpf 2 von Auftragsmedium M umläuft. Der Sumpf befindet sich in einem Trog mit Auffangwanne 3. Der Schöpfwalze 1 ist als sogenannte laufende Oberfläche eine Gegenwalze 4 zugeordnet, die von einer Papierbahn B umschlungen ist. Beide Walzen 1 und 4 laufen gegensinnig. Sie bilden miteinander einen Nip N, in welchem das Auftragsmedium an die Papierbahn B direkt abgegeben wird.The applicator shown in Figure 1 comprises a scoop roller 1, which in one Swamp 2 of application medium M revolves. The swamp is in a trough with Collecting pan 3. The scoop roller 1 is a counter roller as a so-called running surface 4 assigned, which is wrapped in a paper web B. Both rollers 1 and 4 run in opposite directions. Together they form a nip N, in which the application medium is delivered directly to paper web B.

    Ebenfalls an der Gegenwalze 4 in Laufrichtung der Papierbahn (siehe durchgezogener Pfeil) ist der Schöpfwalze eine Auftragseinrichtung 6 vorgeschaltet.Also on the counter roller 4 in the direction of the paper web (see solid Arrow) is an application device 6 upstream of the scoop roller.

    Im Beispiel ist ein rundes maschinenbreites Farbzuführrohr 7 gewählt, in das eine Vielzahl von über die Länge des Rohres 7 verteilt angeordnete Einzeldüsen 8 eingelassen sind.In the example, a round machine-wide ink feed pipe 7 is selected, into which a large number of individual nozzles 8 arranged distributed over the length of the tube 7 are.

    Mit diesen Düsen kann ein Vorstrich auf die Papierbahn B aufgebracht werden, wobei die Hauptmenge des Auftrages dann mit der Schöpfwalze erfolgt.With these nozzles, a primer can be applied to the paper web B, whereby the bulk of the order is then done with the scoop roller.

    Wie bereits erwähnt, kann mit der Düsenauftragseinrichtung 6 auch der gesamte Strichauftrag aufgebracht werden. In diesem Fall wird der Schöpfwalze 1 kein Auftragsmedium zugeführt, sondern sie wird gewissermaßen umfunktioniert, indem sie die zuvor aufgetragene Schicht vergleichmäßigt. Die Schöpfwalze dreht hierbei gleichsinnig, um eine bessere Verreibewirkung zu erzielen (siehe gestrichelter Pfeil in Figur 1).As already mentioned, the whole can also be used with the nozzle application device 6 Stroke can be applied. In this case, the scoop roller 1 is not an application medium fed, but it is transformed to a certain extent by the previously applied layer evened out. The scoop roller rotates in the same direction, to achieve a better rubbing effect (see dashed arrow in Figure 1).

    Aus Figur 1 ist außerdem entnehmbar, daß der Schöpfwalze 1 eine Rakeleinrichtung 5 nachgeordnet ist. Dies ist eine bekannte Einrichtung mit einer Rakelklinge, einem Rakelstab oder einer feststehenden Rakelleiste. In Figur 1 ist als Beispiel eine Rakelklinge dargestellt die, wenn erforderlich, überschüssiges Medium von der Papierbahn B abstreift. Das überschüssige Medium wird in einem nicht in der Figur dargestellten Sammeltrog aufgefangen und kann im Kreislaufsystem dem Beschichtungsprozess wieder zugeführt werden.It can also be seen from FIG. 1 that the scoop roller 1 has a doctor device 5 is subordinate. This is a known device with a doctor blade, a doctor rod or a fixed squeegee bar. In Figure 1 is a doctor blade as an example shown the, if necessary, scrapes excess medium from the paper web B. The excess medium is in a collecting trough, not shown in the figure caught and can in the circulatory system the coating process again be fed.

    Aus Figur 2, in der das indirekte Auftragen auf die Papierbahn dargestellt ist, sind zwei Auftragswalzen 10, 10' entnehmbar, die miteinander einen Nip N bilden, durch den die Papierbahn B läuft. In diesem Nip wird das Auftragsmedium auf die Papierbahn übertragen.There are two from FIG. 2, in which the indirect application to the paper web is shown Application rollers 10, 10 'can be removed, which together form a nip N through which the Paper web B is running. In this nip, the application medium is transferred to the paper web.

    Jeder Auftragswalze ist eine Schöpfwalze 1 bzw. 1' mit Trog 3 bzw. 3' zugeordnet.Each application roller is assigned a scoop roller 1 or 1 'with a trough 3 or 3'.

    Wie bei Figur 1 ist eine Düsenauftragseinrichtung 6 bzw. 6' in Laufrichtung der laufenden Oberfläche (hier der Auftragswalze 10 bzw. 10') vor der Schöpfwalze in geringem Abstand zu ihr angeordnet. As in FIG. 1, a nozzle application device 6 or 6 'is the current one in the running direction Surface (here the application roller 10 or 10 ') in front of the scoop roller in a small amount Spaced from her.

    Aus Figur 2 ist außerdem entnehmbar, daß die Düsenauftragseinrichtung 6 anstelle der Walze 10 bzw. 10' auch der Schöpfwalze 1 oder / und der Schöpfwalze 1' zugeordnet sein kann und dort einen Vorstrich auf die laufende Oberfläche 10 bzw. 10' erzeugt. In Figur ist diese Möglichkeit in gestrichelten Linien nur auf der linken Seite der Figur dargestellt, obwohl das spiegelbildlich auch auf der rechten Seite der Figur für beidseitiges Auftragen auf die Materialbahn B erfolgen kann.From Figure 2 it can also be seen that the nozzle applicator 6 instead of Roller 10 or 10 'also assigned to the scoop roller 1 and / or the scoop roller 1' can be and there creates a precoat on the running surface 10 or 10 '. In figure this possibility is in dashed lines only on the left side of the figure shown, although the mirror image also on the right side of the figure for both sides Can be applied to the material web B.

    Es sei noch eine weitere denkbare Möglichkeit aufgezeigt. Diese Möglichkeit ist aus Übersichtlichkeitsgründen nur im rechten Teil der Figur 2 gestrichelt dargestellt. Diese Möglichkeit besteht darin, daß um die eigentliche Schöpfwalze 1' und / oder 1 und um Leitwalzen 15 ein Endlosband 12 läuft. Die Schöpfwalze wirkt hier als Stützwalze, d. h. sie trägt kein Auftragsmedium auf. Eine Düseneinrichtung 6'' von gleicher Bauart wie 6 oder 6' sprüht oder strahlt hier zusätzlich (als Vorstrich zur Einrichtung 6 und / oder 6') oder nur allein das Auftragsmedium auf das Endlosband 12.Another conceivable possibility is shown. This possibility is over For reasons of clarity, only shown in dashed lines in the right part of FIG. This Possibility is that around the actual scoop roller 1 'and / or 1 and Guide rollers 15 an endless belt 12 runs. The scoop roller acts as a backup roller, i.e. H. it does not apply an order medium. A nozzle device 6 ″ of the same type as 6 or 6 'additionally sprays or radiates (as a primer for device 6 and / or 6') or only the application medium on the endless belt 12.

    Soll die Papierbahn B beidseitig behandelt werden, sind die dargestellten Einrichtungen analog zu den vorherigen Ausführungen zu beiden Seiten der Papierbahn im Einsatz.If the paper web B is to be treated on both sides, the devices shown are analogous to the previous explanations on both sides of the paper web in use.

    Bei nur einseitigem Auftrag ist jeweils nur die linke oder nur die rechte dargestellte Anordnung in Betrieb.If the order is only one-sided, only the arrangement on the left or only on the right is shown in operation.

    In Figur 2 ist eine nach oben laufende Materialbahn B gezeigt. Selbstverständlich kann auch eine andere Bahnführung mit entsprechend angepaßter Laufrichtung der Auftragswalzen gewählt werden. Diese dargestellte Ausführung ist nur ein Beispiel und soll den Schutzumfang der Erfindung nicht einschränken.A material web B running upward is shown in FIG. Of course you can also another web guide with a correspondingly adjusted running direction of the application rollers to get voted. This version shown is only an example and is intended do not limit the scope of the invention.

    Claims (8)

    Vorrichtung zum direkten oder indirekten, ein- oder beidseitigen Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Oberfläche, die bei direktem Auftrag eine von einer Gegenwalze (4) gestützte Materialbahn, insbesondere Papier- oder Kartonbahn (B), und bei indirektem Auftrag eine Auftragswalze (10,10') ist, die das Auftragsmedium an die Materialbahn (B) abgibt, wobei der laufenden Oberfläche (B,10,10') eine Schöpfwalze (1,1') zugeordnet ist, dadurch gekennzeichnet, daß der Schöpfwalze (1, 1') in Laufrichtung der laufenden Oberfläche (B, 10, 10') eine Düsenauffragseinrichtung (6, 6') vorgeschaltet ist.Device for direct or indirect, one- or both-sided application of a liquid or pasty medium to a running surface, which, in the case of direct application, has a material web supported by a counter roller (4), in particular paper or cardboard web (B), and an application roller in the case of indirect application (10,10 '), which delivers the application medium to the material web (B), a scoop roller (1,1') being assigned to the running surface (B, 10,10 '), characterized in that the scoop roller (1 , 1 ') is connected upstream of a nozzle application device (6, 6') in the running direction of the running surface (B, 10, 10 '). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Düsenauftragseinrichtung (6, 6') ein Freistrahldüsenauftragswerk ist, mit einem über die gesamte Breite der Vorrichtung reichenden Dosierspalt für das Auftragsmedium ist.Apparatus according to claim 1, characterized in that the nozzle application device (6, 6 ') is a free jet nozzle applicator with a metering gap for the application medium which extends over the entire width of the device. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Düsenauftragseinrichtung (6, 6') aus einer Vielzahl von Einzeldüsen (8) besteht, die aus einem über die gesamte Maschinenbreite reichenden Verteilrohr (7) für das Auftragsmedium (M) abzweigen und über dessen Länge gleichmäßig verteilt sind.Apparatus according to claim 1, characterized in that the nozzle application device (6, 6 ') consists of a plurality of individual nozzles (8) which branch off from a distribution pipe (7) for the application medium (M) which extends over the entire machine width and over its length are evenly distributed. Vorrichtung nach Anspruch 1 sowie Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Düsenauftragseinrichtung (6, 6') für einen Vorstrich auf die laufende Oberfläche (B, 10, 10') vorgesehen ist und die Schöpfwalze (1, 1') den Hauptauftrag auf die laufende Oberfläche (B, 10, 10') bewerkstelligt. Apparatus according to claim 1 and claim 2 or 3, characterized in that the nozzle application device (6, 6 ') is provided for a primer on the running surface (B, 10, 10') and the scoop roller (1, 1 ') the main application on the running surface (B, 10, 10 '). Vorrichtung nach Anspruch 1 sowie Anspruch 2 oder 3, dadurch gekennzeichnet, daß nur die Düsenauftragseinrichtung (6, 6') für einen Auftrag auf die laufende Oberfläche (B, 10, 10') vorgesehen ist und die Schöpfwalze (1, 1') für die Vergleichmäßigung der aufgetragenen Schicht bestimmt ist.Apparatus according to claim 1 and claim 2 or 3, characterized in that only the nozzle application device (6, 6 ') is provided for application to the running surface (B, 10, 10') and the scoop roller (1, 1 ') for the uniformity of the applied layer is determined. Vorrichtung nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Schöpfwalze (1, 1') in Laufrichtung der Oberfläche (B, 10, 10') oder entgegen der Laufrichtung der Oberfläche dreht oder gar nicht angetrieben ist.Device according to one or more of claims 1 to 5, characterized in that the scoop roller (1, 1 ') rotates in the running direction of the surface (B, 10, 10') or counter to the running direction of the surface or is not driven at all. Vorrichtung nach dem Oberbegriff des Anspruches 1 sowie Anspruch 6, dadurch gekennzeichnet, daß die Düseneinrichtung (6, 6') des Medium auf die Oberfläche der Walze (3, 3') aufbringt.Device according to the preamble of claim 1 and claim 6, characterized in that the nozzle device (6, 6 ') applies the medium to the surface of the roller (3, 3'). Vorrichtung nach dem Oberbegriff des Anspruches 1 sowie Anspruch 6, dadurch gekennzeichnet, daß ein Endlosband (12) um eine Walze (3, 3') sowie Leitwalzen (15) wobei eine Düseneinrichtung (6'') das Medium auf das Endlosband (12) aufbringt.Device according to the preamble of claim 1 and claim 6, characterized in that an endless belt (12) around a roller (3, 3 ') and guide rollers (15), a nozzle device (6'') transferring the medium onto the endless belt (12) applies.
    EP99105523A 1998-04-11 1999-03-18 Apparatus for applying directly or indirectly a fluid or pasty medium onto one or both sides of a moving surface Withdrawn EP0949380A3 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19816337A DE19816337A1 (en) 1998-04-11 1998-04-11 Device for direct or indirect, one- or two-sided application of a liquid or pasty medium to a running surface
    DE19816337 1998-04-11

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    EP0949380A2 true EP0949380A2 (en) 1999-10-13
    EP0949380A3 EP0949380A3 (en) 2000-06-07

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    CN113231238A (en) * 2021-05-31 2021-08-10 德州联合拓普复合材料科技有限公司 Uniform feeding mechanism and automatic glue spreader for textile processing

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    DE19816337A1 (en) 1999-10-14
    EP0949380A3 (en) 2000-06-07
    US6214112B1 (en) 2001-04-10

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