EP0484738A1 - Applicateur - Google Patents

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Publication number
EP0484738A1
EP0484738A1 EP19910118036 EP91118036A EP0484738A1 EP 0484738 A1 EP0484738 A1 EP 0484738A1 EP 19910118036 EP19910118036 EP 19910118036 EP 91118036 A EP91118036 A EP 91118036A EP 0484738 A1 EP0484738 A1 EP 0484738A1
Authority
EP
European Patent Office
Prior art keywords
mouthpiece
storage container
moving surface
coated
coating
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Withdrawn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
EP19910118036
Other languages
German (de)
English (en)
Inventor
Albert Hebels
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.)
Pagendarm Beschichtungstechnik GmbH
Original Assignee
Pagendarm Beschichtungstechnik 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 Pagendarm Beschichtungstechnik GmbH filed Critical Pagendarm Beschichtungstechnik GmbH
Publication of EP0484738A1 publication Critical patent/EP0484738A1/fr
Withdrawn legal-status Critical Current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
    • B05C5/0254—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
    • 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
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/028—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with a body having a large flat spreading or distributing surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • 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
    • B05C11/048—Scrapers, i.e. metering blades having their edge oriented in the upstream direction in order to provide a reverse angle of attack
    • 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
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/18—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material only one side of the work coming into contact with the liquid or other fluent material

Definitions

  • the invention relates to a device for applying a layer of a coating composition to a surface moved in a predetermined conveying direction, comprising a storage container for holding a supply of the coating composition to be applied, a mouthpiece oriented towards the moving surface and a discharge opening extending over the width of the surface to be coated for applying the coating material to the surface and an inflow channel connecting the storage container to the mouthpiece for the coating material.
  • the coating composition provided can be applied directly to the substrate with an application device and distributed there to form a layer.
  • Another possibility is to first apply the coating composition to an intermediate carrier, for example a rotating discharge roller, which transfers it as a layer to the substrate to be coated.
  • an intermediate carrier for example a rotating discharge roller, which transfers it as a layer to the substrate to be coated.
  • the invention has for its object to provide a further device of the type described above, which in particular has better application properties.
  • a discharge gap of a predetermined width is provided between the downstream mouthpiece boundary and the moving surface to be coated.
  • the mass is transverse to the feed direction discharged in the mouthpiece from the moving surface in the form of a thin layer, the thickness of which is essentially determined by the width of the discharge gap. This results in a very intimate connection between the surface and the applied mass layer.
  • the mouthpiece comprises a discharge chamber which is delimited on one side by the moving surface, is closed upstream from a mouthpiece limitation resting on the moving surface, opens downstream into the discharge gap and via the inflow channel with the storage container connected is.
  • the downstream mouthpiece boundary is designed as a doctor blade which extends in parallel over the entire width of the surface to be coated and the end face of which is oriented essentially parallel to the moving surface at a predetermined distance. This arrangement enables a uniform coating, the thickness of which is smaller than the gap width. The layer quality depends on the length of the end face of the doctor blade in the direction of movement.
  • the upstream mouthpiece limitation is designed as a deformable wall which extends at least over the width of the surface to be coated and seals against it.
  • the deformable wall to the moving surface is supported by the internal pressure that prevails in the mouthpiece or in the discharge chamber. It prevents the escape of coating material against the direction of movement of the surface and it blocks the discharge chamber for the entry of air.
  • means for adjusting the length the mouthpiece opening are provided in the conveying direction.
  • the upstream mouthpiece limitation can be arranged to be adjustable relative to the downstream in the conveying direction.
  • the length of the mouthpiece opening in the conveying direction is the wetting length in the area of the discharge chamber in front of the discharge gap. Its adjustability enables the device to be adapted to different coating materials with different flow properties. In this way, optimal coating results can always be achieved.
  • the adjustable arrangement of the upstream mouthpiece limitation and in particular the deformable wall means that the wetting length can be adjusted, which requires little technical effort.
  • the mouthpiece with the discharge gap is preferably below the coating mass level in the storage container and means are provided for keeping the coating mass level constant in the storage container. This arrangement enables the coating mass to be conveyed from the storage container to the mouthpiece solely by gravity. A pump is not required to load the mouthpiece or the discharge chamber. By regulating the level in the storage container, the pressure in the mouthpiece and in the discharge gap can be kept constant in a simple manner.
  • a simple way of realizing the constant pressure in the mouthpiece according to the invention is that the storage container is designed as an overflow container and that means for supplying coating material to the storage container in Surplus are provided.
  • the reservoir and the inflow channel have the width of the discharge gap and the surface to be coated. This always ensures a uniform distribution of the coating material over the entire width of the surface to be coated, which benefits the quality of the coating.
  • an inflow valve is assigned in the inflow channel, which influences the feed quantity of the coating material to the mouthpiece and with which the inflow can be interrupted.
  • the invention offers the advantage of ideal outlet conditions in the mouthpiece or in the outlet chamber, so that very thin coatings can be applied to moving surfaces with a relatively large outlet gap.
  • the adjustability of the length of the mouthpiece in the direction of movement of the surface to be coated and thus of the wetting length enables the proposed application device to be adapted to different coating compositions with different flow properties.
  • the flat design and arrangement of the end face of the squeegee provided as a downstream mouthpiece boundary, which is aligned parallel to the moving surface, allows the production of a coating whose thickness is smaller than the gap width, i.e. the distance between the moving surface and the end face of the squeegee, and the surface of which is optimal having.
  • the proposed application device offers optimal conditions for producing a thin and very uniform coating on a moving surface, this coating being applied directly can be applied to a substrate to be coated or on a discharge roller as an intermediate support for the layer.
  • FIG. 1 schematically shows a cross section through an application device 1 according to the invention, with which a layer 3 (FIG. 2) of a predetermined coating material is applied to a surface 2 moved in the direction of the arrow R.
  • a discharge roller 4 on the cylindrical surface of which the coating is to be applied, which is then transferred in a known manner, not shown, to a moving substrate, for example a material web.
  • FIG. 2 shows a small section of the discharge roller 4, the section of its cylindrical surface being shown for the sake of simplicity as a flat surface, which is approximately correct due to the large radius of the discharge roller 4.
  • a substrate web to be coated can also be guided and coated directly to the application device 1.
  • the application device 1 has a storage container 7 in a housing 6 for holding the coating composition to be applied.
  • the storage container 7 is designed as an overflow container with an overflow edge 8, which guarantees a constant filling level with sufficient supply of coating material.
  • the coating composition is fed through one or more loading openings 9 in the bottom of the storage container in such an amount that part of the coating composition continuously runs over the overflow edge 8 into an adjacent collecting container 11.
  • the coating composition is fed from a main storage container 13 by means of a pump 12. Excess coating mass collected in the collecting container 11 is drawn off from the collecting container 11 by means of a pump 14 and pumped back into the main storage container 13.
  • An inflow channel 16 is connected to the storage container 7 and ends in a discharge chamber 17.
  • the discharge chamber 17 is of a mouthpiece 18 of the application device and extends perpendicular to the plane of the drawing and parallel to the axis of rotation of the discharge roller 4 over the entire width of the surface to be coated 2.
  • the reservoir 7 and the inflow channel 16 are as wide as the discharge chamber 17 and the surface to be coated. This ensures a uniform distribution of the coating material over the entire width of the surface to be coated.
  • the pressure is the same over the entire width of the discharge chamber 17, so that the same discharge conditions prevail everywhere.
  • the mouthpiece opening with the discharge chamber 17 is shown enlarged in FIG.
  • the boundary of the mouthpiece lying in the direction of movement R, the surface 2, is formed by a doctor blade 19, the end face 21 of which runs as parallel as possible to the moving surface 2 and has a predetermined length L R in the direction of movement R of the moving surface.
  • the distance S of the end face 21 of the doctor blade 19 from the moving surface 2 defines a discharge gap 22 through which the coating composition on the surface 2 is discharged from the mouthpiece 18.
  • a particularly smooth and even coating surface is obtained if the length L R of the end face 21 of the doctor blade 19 is selected such that the tear-off edge of the coating material stream lies in the discharge gap on the downstream doctor blade edge 32.
  • the mouthpiece or the discharge chamber 17 is delimited by a deformable wall 23 which also extends over the entire width of the surface to be coated and clings closely to this surface, so that the discharge chamber is reliably sealed in this direction. This prevents air from being drawn into the coating material, which in the form of bubbles Irregularities in the coating produced can result.
  • the end of the deformable wall 23 abutting the moving surface 2 determines the length of the mouthpiece opening in the direction of movement R of the moving surface and thus the wetting length L B in the region of the mouthpiece in front of the discharge gap 22.
  • the deformable wall 23 is in the direction of a Arrow 24 slidable so that the mouthpiece opening and thus the wetting length L B are adjustable.
  • releasable fastenings 26 are provided.
  • the wetting length L B adjustable.
  • One such possibility is to arrange the entire lower mouthpiece limitation 33 such that it can move relative to the upper (doctor blade 19) so that the mouthpiece opening can be enlarged or reduced.
  • the mouthpiece limiter 33 can be arranged to be linearly displaceable or tiltable toward or away from the squeegee. The position of a tilt axis 34 is indicated in FIG.
  • the supply container 7 is continuously fed from the main supply 13 by means of the pump 12 so much coating material that it runs over the overflow edge 8 into the collecting container 11. In this way, a filling level of constant height is maintained in the storage container 7.
  • the coating material passes from the storage container 7 in a wide stream through the Inflow channel 16 into the mouthpiece or the discharge chamber 17, from which a layer 3 of the coating material is discharged through the discharge gap 22. Because of the constant fill level in the reservoir 7, the pressure in the discharge chamber 17 and the discharge gap 22 is constant for a given wetting length L B.
  • the wetting length L B and thus the pressure at the mouthpiece opening can be optimally adjusted to the flow properties of the coating composition.
  • the pressure at the discharge gap 22, which is predetermined by the level of the coating material in the storage container 7 and the wetting length L B, and the described design and arrangement of the doctor blade 19 bring about discharge conditions which can be optimally adapted to the properties of different coating materials.
  • At a constant level of height of the pressure at the discharge gap 22 is set by adjusting the wetting length L B so that the discharged through the discharge slot coating just the desired layer thickness B has.
  • the inflow channel 16 is assigned an inflow valve 27 which, in the exemplary embodiment shown, has a slide 29 which can be moved in the direction of the arrow 28.
  • the slide can be adjusted from the outside with an actuating device 31.
  • This valve serves to interrupt the flow of coating material to the mouthpiece when the coating process is to be ended and to influence the amount of flow.
  • the filling level of the storage container 7 lies above the discharge gap 22, so that the coating composition reaches the mouthpiece and the discharge gap solely through the force of gravity through the inflow channel 16.
EP19910118036 1990-11-05 1991-10-23 Applicateur Withdrawn EP0484738A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4035091A DE4035091A1 (de) 1990-11-05 1990-11-05 Auftragsvorrichtung
DE4035091 1990-11-05

Publications (1)

Publication Number Publication Date
EP0484738A1 true EP0484738A1 (fr) 1992-05-13

Family

ID=6417649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910118036 Withdrawn EP0484738A1 (fr) 1990-11-05 1991-10-23 Applicateur

Country Status (2)

Country Link
EP (1) EP0484738A1 (fr)
DE (1) DE4035091A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995029764A1 (fr) * 1994-04-29 1995-11-09 Minnesota Mining And Manufacturing Company Procede et appareil d'enduction a filiere
US5639305A (en) * 1994-04-29 1997-06-17 Minnesota Mining And Manufacturing Company Die coating method and apparatus
US5759274A (en) * 1994-04-29 1998-06-02 Minnesota Mining And Manufacturing Company Die coating apparatus with surface covering
EP3597307A1 (fr) * 2018-07-18 2020-01-22 Tarkett GDL S.A. Dispositif et procédé pour étaler une pâte de revêtement sur une couche de substrat, par exemple pour produire des éléments de recouvrement de surface

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305081C2 (de) * 1993-02-19 1996-08-01 Minnesota Mining & Mfg Verfahren und Vorrichtung zum Auftragen von Haftkleber auf Bogen aus Papier oder dergleichen Material
US5885722A (en) * 1994-02-15 1999-03-23 Minnesota Mining And Manufacturing Method for applying coating materials to overlapped individuals sheets
US5958135A (en) * 1994-08-17 1999-09-28 Minnesota Mining And Manufacturing Company Apparatus and method for applying coating materials to individual sheet members
DE102006017365A1 (de) * 2006-04-11 2007-10-18 Khs Ag Beleimungsvorrichtung
CN105127061B (zh) * 2015-07-28 2017-09-05 湖北三江航天江河化工科技有限公司 一种衬层刮涂设备及其刮涂方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2251381A1 (fr) * 1973-11-16 1975-06-13 Billeruds Ab
DE8400325U1 (de) * 1984-01-07 1985-07-18 Jagenberg AG, 4000 Düsseldorf Vorrichtung zum Beschichten von über eine Stützwalze laufenden Materialbahnen mit regelbarer Auftragsstärke
DE3906070A1 (de) * 1989-02-27 1990-09-13 Hubert Dipl Ing Etzkorn Verfahren und vorrichtung zum beschichten eines bahnmaterials mit einer klebstoffloesung und anwendung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486482A (en) * 1966-12-30 1969-12-30 Westvaco Corp Apparatus for coating traveling webs
GB2057304B (en) * 1979-08-27 1983-09-07 Acumeter Lab Adhesive applicator eg for cigarette filter tipping paper
FI68770C (fi) * 1983-05-12 1985-11-11 Waertsilae Oy Ab Bestrykare
CH663362A5 (de) * 1984-01-07 1987-12-15 Jagenberg Ag Vorrichtung zum beschichten von ueber eine stuetzwalze laufenden materialbahnen mit regelbarer auftragsstaerke.
SE8503652D0 (sv) * 1985-07-05 1985-07-31 Yngve Fundell Short-dwell-applicering med stort smetoverskott
AU2729788A (en) * 1987-11-16 1989-06-14 Nordson Corporation Method and apparatus for preventing coating of nozzle
JPH07106332B2 (ja) * 1988-08-23 1995-11-15 富士写真フイルム株式会社 塗布装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2251381A1 (fr) * 1973-11-16 1975-06-13 Billeruds Ab
DE8400325U1 (de) * 1984-01-07 1985-07-18 Jagenberg AG, 4000 Düsseldorf Vorrichtung zum Beschichten von über eine Stützwalze laufenden Materialbahnen mit regelbarer Auftragsstärke
DE3906070A1 (de) * 1989-02-27 1990-09-13 Hubert Dipl Ing Etzkorn Verfahren und vorrichtung zum beschichten eines bahnmaterials mit einer klebstoffloesung und anwendung

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995029764A1 (fr) * 1994-04-29 1995-11-09 Minnesota Mining And Manufacturing Company Procede et appareil d'enduction a filiere
US5639305A (en) * 1994-04-29 1997-06-17 Minnesota Mining And Manufacturing Company Die coating method and apparatus
US5759274A (en) * 1994-04-29 1998-06-02 Minnesota Mining And Manufacturing Company Die coating apparatus with surface covering
EP3597307A1 (fr) * 2018-07-18 2020-01-22 Tarkett GDL S.A. Dispositif et procédé pour étaler une pâte de revêtement sur une couche de substrat, par exemple pour produire des éléments de recouvrement de surface
WO2020016291A1 (fr) * 2018-07-18 2020-01-23 Tarkett Gdl S.A. Dispositif et procédé de revêtement par étalement d'une pâte sur une couche de substrat, par exemple en vue de la production d'éléments de recouvrement de surface

Also Published As

Publication number Publication date
DE4035091A1 (de) 1992-05-07

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