EP1392926B1 - Dispositif d'application - Google Patents

Dispositif d'application Download PDF

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Publication number
EP1392926B1
EP1392926B1 EP02732368A EP02732368A EP1392926B1 EP 1392926 B1 EP1392926 B1 EP 1392926B1 EP 02732368 A EP02732368 A EP 02732368A EP 02732368 A EP02732368 A EP 02732368A EP 1392926 B1 EP1392926 B1 EP 1392926B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
assembly according
medium
application
lip
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
EP02732368A
Other languages
German (de)
English (en)
Other versions
EP1392926A2 (fr
Inventor
Eckart Krägeloh
Franz Fischer
Philipp Speidel
Christoph Henninger
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 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 Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1392926A2 publication Critical patent/EP1392926A2/fr
Application granted granted Critical
Publication of EP1392926B1 publication Critical patent/EP1392926B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0283—Flat jet coaters, i.e. apparatus in which the liquid or other fluent material is projected from the outlet as a cohesive flat jet in direction of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/001—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work incorporating means for heating or cooling the liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B05C5/0262—Coating heads with slot-shaped outlet adjustable in width, i.e. having lips movable relative to each other in order to modify the slot width, e.g. to close it
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/005—Curtain coaters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S118/00—Coating apparatus
    • Y10S118/04—Curtain coater

Definitions

  • the invention relates to a device for direct or indirect application of a liquid or pasty medium on a moving material web, in particular of paper or cardboard, with a metering formed as a dispensing die, which is formed between an inlet-side lip and a drain-side lip of the applicator.
  • Another generic application device is, for example, in the post-published DE 10012345 described.
  • This is a so-called “curtain coater”, that is to say a curtain application device with which the application medium essentially follows the force of gravity, from a dispensing nozzle onto the surface to be coated.
  • Both types of application devices have a distributor tube for the application medium. From the distributor tube, the medium passes through passage openings into a feed gap and from there into the metering gap forming the application nozzle, from which the medium then emerges.
  • the metering gap is formed by two die lips. By adjusting one of the lips or both lips, the outlet width can be varied.
  • the material web usually runs over a support surface, for example a support roller.
  • the application medium is first applied to the surface of a counter element (eg an applicator roll or an endless circulating belt) in order to be transferred from the counter element to the material web in a nip through which the material web passes ,
  • a counter element eg an applicator roll or an endless circulating belt
  • the one of the two lips forming the metering gap, which lies on the side of the metering gap on which the material web runs onto the applicator, is referred to as the inlet-side lip. Accordingly, that lip which lies on the side of the metering gap on which the material web runs away from the application device is referred to as the outlet-side lip.
  • All of these components are machine-wide (ie over the entire width of the machine for producing and / or finishing the paper or board web reaching) executed. These components are adapted substantially to the width of the material web to be treated, and currently a width of about 10 m and more is not uncommon. In addition, with the ever-increasing machine speeds, uniform application of the medium can be made increasingly difficult. In addition, such elongate components tend to deflections.
  • the applicators or their nozzles have the disadvantage that they are very sensitive to blockages at the delivery area of the machine-wide metering gap, said gap has only a very small opening width of a few millimeters, in particular even only about 0.8 mm.
  • the invention is therefore based on the object to further develop an applicator device, on the one hand, the setting of particles at the delivery area of the application nozzle and on the other hand, a thermal deflection of components of the applicator is avoidable, but at least minimized.
  • both objects are achieved by integrating in each case at least one temperature-flow channel through which a fluid flows in at least one of the two nozzle lips of the application device, wherein the temperature-control channel (11, 12) is closed to the free environment with a thin-walled component (14, 15) and the component (14,15) has a wall thickness (W1) of 0.1-3 mm.
  • a tempering fluid is water or air.
  • the first task (avoidance or reduction of deposits and caking of particles in the critical areas of the application nozzle) with a cooling fluid or even if desired
  • the second task (reduction or prevention of thermal Deflection of the components of the application device responsible for the order result) with a fluid adapted to the temperature of the application medium.
  • the application medium is usually up to about 60 ° C warm, causing the application device, in particular the nozzle lips to heat with the metering gap.
  • the inventors have recognized that with a cool or cooled fluid, a temperature difference can be generated between outer surfaces and inner surfaces of the nozzle lips. As a result, a condensation on the medium-guiding surfaces of the metering is achieved, with this formed condensate prevents the "caking" of particles, but at least significantly reduced.
  • the device thus works almost self-cleaning, without machine shutdowns are necessary and even with prolonged downtime the applicator is immediately ready for use again. Defects in the order layer are avoided.
  • the at least one tempering channel is positioned in the immediate vicinity of the nozzle end, ie at the outlet end or the dispensing area of the device, since this area represents the critical area for the "caking".
  • the at least one temperature control channel is arranged on the side of the nozzle lip (lips) directed towards the free environment, the wall thickness of the nozzle lip being smaller in the region of the temperature control channel on the side facing the free environment, as on the Page touched by the medium.
  • this outer wall portion of the nozzle lip forms a thin-walled component, which also seals the tempering channel to the outside.
  • the component for example a metal strip, only needs to have a thickness of 0.1 to 3 mm, preferably 0.2 to 1 mm.
  • the metal parts that is, the nozzle lip and the metal strip, are connected to each other by laser welding or by gluing or by soldering. This technology enables a high-precision and tight connection. In addition, an unwanted distortion of the die lips is avoided.
  • the device according to the invention is structurally simple. It requires except fluid supplies, which are anyway available on machines for producing or finishing a material web, in particular paper or board web, for example, for cooling gutters and / or walls, no extra components.
  • a corresponding branch of the fluid supply line can be accomplished in a simple manner.
  • the application device for coating a running paper web B comprises a support structure or support beam 1, which extends over the entire machine width (width of the paper making or finishing machine, or width of the applicator device).
  • the paper web runs over a support roller W and is to be coated directly with the application medium M.
  • the support beam 1 includes a distributor tube 2 (so-called Farbverteilrohr) for the applied liquid or pasty application medium M, such as pigment-containing coating color, glue or starch.
  • a distributor tube 2 so-called Farbverteilrohr
  • a compensation chamber 3 connects, which continues in a supply channel 4.
  • the feed channel 4 opens into a metering gap 5 which is formed between an inlet-side lip 6 and an outlet-side lip 7.
  • the inlet-side lip 6 is the one at which the surface to be coated (in this case paper web B) tapers to the metering gap 5. Accordingly, accordingly, the drain-side lip 7 is the one at which the web expires.
  • FIG. 1 It can be seen that the free end of the inlet-side lip 6 extends beyond the free end of the drain-side lip 7 and is provided with a concave curved deflection surface 8 for degassing of the application medium.
  • FIG. 2 Plotted arrows Z, which should indicate the supply of a fluid, such as water or air, in the temperature control channel 11 and 12 respectively.
  • a fluid such as water or air
  • the respective selected fluid water or air can be passed through the channels 11,12 in the start-up phase and / or in the operating phase of the device.
  • the fluid is used for cooling, it should be colder than the environment.
  • the above-mentioned wall thicknesses W 1 are advantageously formed by thin components 14 and 15, so that the entire nozzle lip heated by the application medium, dryers, etc., can thermally deform only insignificantly when a cooling fluid flows through the temperature control channels 11 and 12.
  • FIG. 1 is also removable, that the component 14 is divided into two parts and in this installation variant shown consists of a horizontal leg 14a and a vertical leg 14b.
  • the leg 14b also serves as a point of attack for a known adjusting device 16, with which the distance of the inlet-side lip 6 to the outlet-side lip 7 and thus the width of the metering 5 is adjustable and variable.
  • the component 14 may also be integrally formed, as in FIGS. 2 to 4 is shown.
  • the closing of the tempering channel 11, 12 with the components 14,15 takes place here in the example with a thin sheet metal strip of 0.7 mm thickness.
  • the connection with the metallic component of the die lip 6, 7 takes place with high precision.
  • a laser welding process in particular with a high-power diode laser in the power range of 1.2 to 3.0 kilowatts is provided. With such a weld executed there is no risk of heat distortion of the nozzle lip.
  • the length of the two die lips 6 and 7 can be the same length (see FIGS. 3 and 4 ) or also be formed by the inlet-side lip 6 - like FIG. 1 and 2 shows - extends beyond the free end of the drain-side lip 7 addition.
  • FIG. 3 an applicator for curtain coating (Curtain Coating) is shown, which is essentially the same as the device.
  • FIG. 1 is constructed and therefore provided with the same reference numerals.
  • the nozzle lips 6 and 7 with tempering channels 11 and 12 and thin outer walls 14 and 15 are in this case arranged pointing vertically downwards and are formed the same length.

Landscapes

  • Coating Apparatus (AREA)
  • Eye Examination Apparatus (AREA)
  • Massaging Devices (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Paper (AREA)
  • Nozzles (AREA)

Claims (8)

  1. Dispositif pour l'application directe ou indirecte d'un fluide liquide ou pâteux (M) sur une bande de matière en mouvement, en particulier une bande de papier ou de carton, avec une fente de dosage (5) se présentant sous la forme d'une buse de dépôt, qui est formé entre une lèvre côté entrée (6) et une lèvre côté sortie (7), caractérisé en ce qu'au moins un canal d'équilibrage de la température (11, 12) parcouru par un fluide est intégré dans au moins une des lèvres de buse (6, 7), dans lequel le canal d'équilibrage de la température (11, 12) est fermé par rapport à l'environnement libre par un composant à paroi mince (14, 15) et le composant (14, 15) présente une épaisseur de paroi (W1) de 0,1 à 3 mm.
  2. Dispositif selon la revendication 1, caractérisé en ce que le canal d'équilibrage de la température (11, 12) est disposé à l'extrémité côté sortie de la fente de dosage (5) et sur le côté (9, 10) des lèvres de buse (6, 7) situé à l'opposé du côté (5a, 5b) de la fente de dosage (5) en contact avec le fluide.
  3. Dispositif selon la revendication 1 et 2, caractérisé en ce que l'épaisseur de paroi (W1) des deux lèvres de buse (6, 7) dans la région du canal d'équilibrage de la température respectif (11, 12) est plus faible sur le côté (9, 10) tourné vers l'environnement libre que l'épaisseur de paroi (W2) sur le côté (5a, 5b) de la fente de dosage (5) en contact avec le fluide.
  4. Dispositif selon la revendication 1, caractérisé en ce que le composant (14, 15) présente une épaisseur de paroi (W1) de 0,2 à 1 mm.
  5. Dispositif selon la revendication 1 et 4, caractérisé en ce que le composant (14, 15) peut être assemblé avec une haute précision à la lèvre de buse (6, 7) par un procédé de soudage au laser, de préférence avec un laser à diode de haute puissance d'une puissance de 0,2 à 3,0 kW, ou par brasage, ou par collage.
  6. Dispositif selon la revendication 1, caractérisé en ce que l'on peut choisir comme fluide d'équilibrage de la température de l'eau refroidie ou échauffée ou de l'air refroidi ou échauffé.
  7. Dispositif selon une ou plusieurs des revendications précédentes 1 à 6, caractérisé par des lèvres de buse (6, 7) qui forment une buse à jet libre, qui délivre le fluide de couchage (M) sous pression.
  8. Dispositif selon une ou plusieurs des revendications précédentes 1 à 6, caractérisé par des lèvres de buse (6, 7), qui forment une buse pour le revêtement au rideau (Curtain Coating), dans lequel la buse à rideau délivre le fluide de couchage (M) essentiellement sous l'influence de la pesanteur.
EP02732368A 2001-04-12 2002-03-30 Dispositif d'application Expired - Lifetime EP1392926B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10118631 2001-04-12
DE10118631A DE10118631A1 (de) 2001-04-12 2001-04-12 Auftragsvorrichtung
PCT/DE2002/001179 WO2002083324A2 (fr) 2001-04-12 2002-03-30 Dispositif d'application

Publications (2)

Publication Number Publication Date
EP1392926A2 EP1392926A2 (fr) 2004-03-03
EP1392926B1 true EP1392926B1 (fr) 2010-03-03

Family

ID=7681610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02732368A Expired - Lifetime EP1392926B1 (fr) 2001-04-12 2002-03-30 Dispositif d'application

Country Status (6)

Country Link
US (2) US6902621B2 (fr)
EP (1) EP1392926B1 (fr)
JP (1) JP2004524966A (fr)
AT (1) ATE459754T1 (fr)
DE (3) DE20122834U1 (fr)
WO (1) WO2002083324A2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007056121B3 (de) * 2007-11-15 2008-09-25 Lindauer Dornier Gmbh Breitschlitzdüse und Anlage zum Beschichten mit thermoplastischem Beschichtungsmaterial
CN107073504A (zh) 2014-08-15 2017-08-18 福伊特专利有限公司 涂布机
DE102015118084A1 (de) * 2015-10-23 2017-04-27 Kugler-Womako Gmbh Vorrichtung zum Auftragen von im erwärmten Zustand viskosem oder flüssigem Klebstoff
DE102016209336B4 (de) * 2016-05-30 2021-08-05 Voith Patent Gmbh Vorhangauftragswerk
EP3446792A1 (fr) * 2017-08-22 2019-02-27 The Procter & Gamble Company Procédé et appareil d'application d'immobilisateur superabsorbant
US10550520B2 (en) 2018-04-05 2020-02-04 Gl&V Canada Inc. Method with a horizontal jet applicator for a paper machine wet end
DE102018110124A1 (de) * 2018-04-26 2019-10-31 Webasto SE Verfahren zum Herstellen einer Antriebskabelhalterung für ein Fahrzeugdach und Bauteil für ein Fahrzeugdach
CN109759284B (zh) * 2019-03-21 2023-12-15 泉州市大疆涂布设备有限公司 便于垫片快速精准更换的涂布机涂布模头
DE102022105438A1 (de) 2022-03-08 2023-09-14 4BoxProducer.com Ltd. Verfahren zum Betrieb einer Kaltleim-Auftragungsvorrichtung und Vorrichtung zum Auftragen von Kaltleim

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
GB736747A (en) * 1953-08-31 1955-09-14 Arthur Ronald Trist Improvements in and relating to means for applying fluent coatings to web material at open width
US3151356A (en) * 1961-08-02 1964-10-06 Du Pont Extrusion die
US3302239A (en) * 1963-05-24 1967-02-07 Du Pont Die
NL6817090A (fr) * 1968-11-29 1970-06-02
US3690297A (en) * 1969-07-22 1972-09-12 Blandin Paper Co Non-aqueous coating of webs
US3767346A (en) * 1971-07-22 1973-10-23 Fmc Corp Film extrusion die
FR2542636B1 (fr) * 1983-03-14 1985-07-12 Saint Gobain Vitrage Procede et dispositif de distribution reguliere d'un solide pulverulent sur un substrat en vue de son revetement et substrat ainsi revetu
US4932353A (en) * 1987-12-18 1990-06-12 Mitsubishi Denki Kabushiki Kaisha Chemical coating apparatus
US6117237A (en) * 1994-01-04 2000-09-12 3M Innovative Properties Company Coater die enclosure system
ATE200325T1 (de) * 1994-09-09 2001-04-15 Voith Paper Patent Gmbh Auftragswerk zum direkten oder indirekten auftragen eines flüssigen oder pastösen mediums auf eine laufende materialbahn
US5792317A (en) * 1996-02-07 1998-08-11 Gl&V-Paper Machine Group, Inc. Wet end starch application
DE19755625A1 (de) * 1997-12-15 1999-07-01 Jagenberg Papiertech Gmbh Schlitzdüse zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen mit Pigmentstreichfarbe
DE10012345A1 (de) * 2000-03-14 2001-09-20 Voith Paper Patent Gmbh Vorhang-Auftragsvorrichtung

Also Published As

Publication number Publication date
US6902621B2 (en) 2005-06-07
WO2002083324A2 (fr) 2002-10-24
DE50214254D1 (de) 2010-04-15
JP2004524966A (ja) 2004-08-19
DE10118631A1 (de) 2002-10-17
US20040074442A1 (en) 2004-04-22
DE20122834U1 (de) 2008-03-27
WO2002083324A3 (fr) 2003-05-08
EP1392926A2 (fr) 2004-03-03
US20050155546A1 (en) 2005-07-21
US7279043B2 (en) 2007-10-09
ATE459754T1 (de) 2010-03-15

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