EP2217384B1 - Dispositif pour revêtir des matériaux en forme de bande - Google Patents

Dispositif pour revêtir des matériaux en forme de bande Download PDF

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Publication number
EP2217384B1
EP2217384B1 EP09768330A EP09768330A EP2217384B1 EP 2217384 B1 EP2217384 B1 EP 2217384B1 EP 09768330 A EP09768330 A EP 09768330A EP 09768330 A EP09768330 A EP 09768330A EP 2217384 B1 EP2217384 B1 EP 2217384B1
Authority
EP
European Patent Office
Prior art keywords
transfer roll
coating medium
coating
bored holes
holes
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.)
Active
Application number
EP09768330A
Other languages
German (de)
English (en)
Other versions
EP2217384A1 (fr
Inventor
Martin Jöhren
Frank Redetzky
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.)
Olbrich GmbH
Original Assignee
Herbert Olbrich GmbH and Co KG
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 Herbert Olbrich GmbH and Co KG filed Critical Herbert Olbrich GmbH and Co KG
Publication of EP2217384A1 publication Critical patent/EP2217384A1/fr
Application granted granted Critical
Publication of EP2217384B1 publication Critical patent/EP2217384B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B05C1/0817—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 characterised by means for removing partially liquid or other fluent material from the roller, e.g. scrapers
    • 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
    • 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
    • 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
    • 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
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • 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
    • Y10S118/15—Roller structure

Definitions

  • the invention relates to a device for coating sheet-like materials with a coating medium.
  • the coating medium is a mass such as dyes, dye dispersions or adhesives.
  • the object of the present invention is to provide an improved device which guarantees a uniform coating of the web reliably and reproducibly at different application weights.
  • This object is achieved with a device having the features of claim 1.
  • This new device has instead of a slot nozzle, as shown in the aforementioned prior art, a plurality of holes from which the coating medium flows out in front of the actual coating chamber in the direction of the transfer roller. These holes are distributed over the entire width of the transfer roller, all holes have the same cross-section.
  • these bores are provided in a metal or plastic block, which serves as a nozzle carrier and allows the common mounting of the individual nozzles designed as bores.
  • the nozzle carrier On the surface of the nozzle carrier has an upper plateau surface, which is particularly flat and aligned horizontally, if necessary, is inclined outwards and downwards so that escaping coating medium can flow. All holes end in this plateau surface and have the same height and the same distance to the transfer roller.
  • the bores are arranged in a line or in a row across the width of the transfer roll, this line being parallel to the axis of the transfer roll. Due to a simple manufacturing round cross sections are preferred for the holes. The most favorable diameters of the holes depend on the coating medium. The more viscous the coating medium, the larger the holes are selected. Diameters of 1 to 5 mm have proven themselves. Smaller diameters cause the holes to clog easily.
  • the holes arranged in the nozzle carrier are each provided at the same distance. It has proven to be advantageous to maintain a ratio of the diameter of the holes to the distance between two holes of 1: 4 to 1:20, preferably in the ratio of 1: 7 to 1:10.
  • the holes are supplied in an advantageous embodiment of a common inflow with coating medium.
  • the discharge of the coating medium from the bores takes place in each case as a free jet.
  • a uniform coating of the transfer roller is achieved in that the holes are arranged over the width of the device in a correspondingly advantageous distance, so that the entire width of the gravure roller is wetted with coating medium.
  • the rather narrow free jet impinges on the gravure roll, wherein the majority of the mass of the coating medium of the respective free jet, which emerges from a bore, rinses out and fills the depression of the transfer roll.
  • the free jet splits and a part of it flows directly away from the roll and takes with the air flow or on the outer surface and in the wells of the roller dirt present.
  • Another part of the stream is taken from the transfer roller to the sealing element, where the sealing element retains the excess coating medium and strips from the lateral surface of the transfer roller.
  • the coating medium collects and distributes over the entire width of the transfer roller. It is preferred that more mass of coating medium is discharged through the bores than is necessary for rinsing and prefilling the recess of the transfer roller.
  • the excess amount of coating medium is entrained to the sealing element of the transfer roller and evened out there, since this partial flow is still greater than is necessary to fill the recess of the transfer roller, necessarily results in a forced flow back away from the sealing element in the direction Outside, where the medium can drain off. Due to the existing between the holes open spaces that were not present in the known device, the excess medium can flow freely, resulting in a reproducible outflow of coating medium as a result, and thus ensures a reproducible coating result.
  • the pre-filled depressions of the transfer roller reach via the sealing element in the coating chamber, where the application weight is determined in a known manner by the present there in the coating chamber conditions, in particular pressure conditions.
  • the drawing shows a schematic diagram of a coating apparatus 1 according to the invention, which serves to coat a moving web with a coating medium 6, 6 '.
  • a coating apparatus 1 comprises a counter-roller, not shown, which is provided opposite to the application head 10, not shown in this drawing.
  • the continuous web, not shown, passes between this backing roll and transfer roll 3, receiving the coating medium 6, 6 '.
  • For transporting the coating medium 6, 6 ' has the transfer roller 3 depressions in its lateral surface 5, which are not visible in the drawings. This can be, for example, different engravings.
  • This coating medium 6 fills out the depressions of the transfer roller 3 and the entire gap between the transfer roller 3 and the sealing element 2. This process will be described later.
  • the pre-filled in front of the coating chamber 12 recesses of the transfer roller 3 pass through the sealing element 2 in the coating chamber 12, where the complete filling with coating medium 6 'takes place and the application weight is set by the overpressure selected there.
  • Output of the coating chamber 12 is stripped by means of a doctor blade 13 in a known manner excess coating medium 6 '.
  • the first partial flow 8 of the coating medium 6 still mixes with it in the wells of the transfer roller 3 existing old coating medium and rinses this. It also takes with penetrating air and flushes any existing dirt from the lateral surface 5 of the transfer roller 3 from.
  • This partial stream 8 becomes direct discharged, for example, in a discharge chamber 17.
  • the outlet openings 151 of the holes 15, 15 ' are equal to the plateau surface 141 of the nozzle carrier and all have the same distance from the lateral surface 5 of the transfer roller 3, so that due to the identically shaped holes 15, 15' and the out of the holes 15, 15 'exiting Free jets 7, 7 'show the same flow profiles.
  • the bores 15, 15 'at regular intervals along a line which is parallel to the axis 4 of the transfer roller 3 is provided.
  • these holes 15, 15 'arranged vertically, as well as from Fig. 2 can be seen.
  • Such a bore 15 could also be configured inclined against the direction of movement of the transfer roller 3.
  • the vertical configuration is preferred because for a stable arrangement with inclined holes a larger-sized nozzle carrier 14 must be provided, which should have a sufficient width B2 for the plateau surface 141 in comparison to the width B1 between the holes and the sealing element 2.
  • the sealing element 2 in a receiving space 142 of the nozzle carrier 14 is provided.
  • the nozzle carrier 14 may be made of plastic or metal.
  • the holes 15, 15 ' are fed in this embodiment by a common inflow.
  • a common inflow may be provided within the applicator 10 or a distribution chamber located outside the applicator 10 is used.
  • the holes 15, 15 ' have a round cross-section. This is the simplest solution in terms of manufacturing technology.
  • the holes 15 have a diameter of 2 mm.
  • the distance L of the holes 15, 15 ' is in this example 14 mm, so that a ratio of diameter D of the bores 15, 15' to the distance L between the holes 15, 15 'of 1: 7 results.
  • the ratio of the diameter D of the bore 15, 15 'to the distance L between the bores 15, 15' is chosen to be too large, namely greater than 1:20, then it can not be ensured that the partial flows 9, 9 ', which are up to the sealing element 2 are entrained, evenly distribute the coating medium over the width of the gravure roll 3 or it must be driven with much more mass of coating medium.
  • the prefilled depressions of the transfer roller 3 pass through the sealing element 2 into the coating chamber 12, where the complete filling with coating medium 6 'takes place and the application weight through the there selected overpressure is set.
  • Output of the coating chamber 12 is stripped by means of a doctor blade 13 in a known manner excess coating medium 6 '.
  • the invention is not limited to the embodiment.

Landscapes

  • Coating Apparatus (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (14)

  1. Dispositif pour revêtir des matériaux en forme de bande avec un fluide de revêtement (6),
    avec un rouleau de transfert (3) en rotation qui, pour transférer le fluide de revêtement (6), présente des creux sur sa surface enveloppante (5),
    avec un dispositif d'enduction (10) servant à combler les creux du rouleau de transfert (3) au moyen d'un fluide de revêtement (6, 6'), sachant que le dispositif d'enduction (10) du fluide de revêtement (6') présente une chambre de revêtement (12) qui est limitée à son extrémité extérieure libre par la surface enveloppante (5) du rouleau de transfert (3),
    sachant que dans le sens de déplacement du rouleau de transfert (3) un interstice arrière entre la surface enveloppante (5) et la chambre de revêtement (12) est limité par un râteau (13), lequel applique de façon étanchéisante contre la surface enveloppante (5) du rouleau de transfert (3),
    sachant que dans le sens de déplacement du rouleau de transfert (3) l'interstice avant entre la surface enveloppante (5) et la chambre de revêtement (12) est limité par un élément d'étanchéité (2),
    caractérisé en ce que le rouleau de transfert (3) dans le sens de déplacement du rouleau de transfert (3) peut être mis sous la pression du fluide de revêtement (6) en amont de l'élément d'étanchéité (2),
    sachant que le fluide de revêtement (6) sort par plusieurs alésages (15, 15') agencés répartis sur la largeur du rouleau de transfert (3), sachant que tous les alésages (15, 15') présentent la même section.
  2. Dispositif selon la revendication 1, caractérisé en ce que les alésages (15, 15') sont prévus dans une fixation conjointe dans le dispositif d'enduction (10), de préférence dans un porte-buses (14) en métal ou en matière plastique.
  3. Dispositif selon la revendication 2, caractérisé en ce que les orifices de sortie (151) des alésages (15, 15') ont été prévus à la même hauteur, de préférence à la hauteur d'une surface supérieure en plateau (141) du porte-buses (14).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que les orifices de sortie (151) des alésages (15, 15') sont agencés en ligne parallèle à l'axe (31) du rouleau de transfert (3).
  5. Dispositif selon l'une des revendications 2 à 4, caractérisé en ce que dans le porte-buses (14) a été prévu un réceptacle (142) recevant l'élément d'étanchéité (2).
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que les alésages (15, 15') présentent une section ronde d'un diamètre (D).
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que respectivement le même écart (L) sépare deux alésages voisins (15, 15').
  8. Dispositif selon l'une des revendications 6 ou 7, caractérisé en ce que le rapport entre le diamètre (D) et l'écart (L) est compris entre 1:4 et 1:20, de préférence entre 1:7 et 1:10.
  9. Dispositif selon l'une des revendications 2 à 8, caractérisé en ce que les alésages (15, 15') sont agencés verticalement dans le porte-buses (14), de sorte que le fluide de revêtement (6) sort perpendiculairement au rouleau de transfert (3).
  10. Dispositif selon l'une des revendications 2 à 8, caractérisé en ce que les alésages (15, 15') sont agencés inclinés dans le porte-buses (14), de sorte que le fluide de revêtement (6) sort en direction opposée du sens dans lequel tourne le rouleau de transfert (3).
  11. Dispositif selon l'une des revendications 1 à 10, caractérisé en ce que le déversement du fluide de revêtement (6) par les alésages (15, 15') peut avoir lieu respectivement sous forme de jet libre (7, 7').
  12. Dispositif selon la revendication 11, caractérisé en ce qu'au moins la majeure partie de la masse (6) du jet de fluide de revêtement respectif (7, 7') peut servir à préremplir les creux du rouleau de transfert (3).
  13. Dispositif selon la revendication 12, caractérisé en ce qu'au moyen du jet libre (7, 7') il est possible de déverser une masse de fluide de revêtement (6) plus importante que celle nécessaire pour préremplir les creux, sachant que la masse excédentaire de fluide de revêtement (6) peut s'écouler directement comme flux partiel (8), et peut être déviée comme flux partiel (9, 9') en direction de l'élément d'étanchéité (2).
  14. Dispositif selon la revendication 13, caractérisé en ce que au moyen du flux partiel (8) s'écoulant directement il est possible également d'évacuer de l'air et les souillures présentes.
EP09768330A 2008-12-05 2009-11-30 Dispositif pour revêtir des matériaux en forme de bande Active EP2217384B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202008016098U DE202008016098U1 (de) 2008-12-05 2008-12-05 Vorrichtung zum Beschichten von bahnförmigen Materialien
PCT/EP2009/008505 WO2010063429A1 (fr) 2008-12-05 2009-11-30 Dispositif pour revêtir des matériaux en forme de bande

Publications (2)

Publication Number Publication Date
EP2217384A1 EP2217384A1 (fr) 2010-08-18
EP2217384B1 true EP2217384B1 (fr) 2012-08-29

Family

ID=40418635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09768330A Active EP2217384B1 (fr) 2008-12-05 2009-11-30 Dispositif pour revêtir des matériaux en forme de bande

Country Status (7)

Country Link
US (1) US8424482B2 (fr)
EP (1) EP2217384B1 (fr)
JP (1) JP5596700B2 (fr)
KR (1) KR101628862B1 (fr)
DE (1) DE202008016098U1 (fr)
ES (1) ES2394300T3 (fr)
WO (1) WO2010063429A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019111200A1 (de) * 2019-04-30 2020-11-05 Airbus Operations Gmbh Vorrichtung zum Lackauftrag
CN113560112B (zh) * 2021-07-26 2022-12-06 山东恒智一建净化工程有限公司 一种可自动涂刷且具有补给功能的漆面装置

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1176528B (de) 1957-07-29 1964-08-20 Boewe Boehler & Weber K G Masc Vorrichtung zum Auftragen von Fluessigkeit, z. B. Klebstoff
DE3725545A1 (de) * 1987-08-01 1989-02-09 Jagenberg Ag Vorrichtung zum beschichten einer materialbahn
US5010840A (en) * 1989-10-30 1991-04-30 Beloit Corporation Short dwell coater apparatus
US5366551A (en) * 1992-03-11 1994-11-22 Institute Of Paper Science And Technology, Inc. Coating device for traveling webs
US5538557A (en) * 1993-08-24 1996-07-23 Beloit Technologies, Inc. Short dwell coater apparatus
US5665163A (en) * 1995-08-22 1997-09-09 Beloit Technologies, Inc. Film applicator with entrained air removal and surface control
US5735957A (en) * 1995-10-02 1998-04-07 Beloit Technologies, Inc. Dual chamber film applicator with in-pond overflow
US5826509A (en) * 1995-10-18 1998-10-27 Deneka; P. Kenneth Printing coating head device
GB9626130D0 (en) 1996-12-17 1997-02-05 Robert Leighton Ltd Improved doctor assembly
US6012391A (en) 1997-05-02 2000-01-11 The Langston Corporation Ink/cleaning fluid delivery system for a chambered doctor blade
DE19845427A1 (de) 1998-10-02 2000-04-06 Basf Ag Vorrichtung zum Aufbringen eines fließfähigen Mediums auf eine bewegte Oberfläche und deren Verwendung
JP2002192050A (ja) * 2000-12-26 2002-07-10 Fuji Photo Film Co Ltd 塗布装置および塗布方法
DE10241251B4 (de) 2002-09-06 2006-05-11 Maschinenfabrik Max Kroenert Gmbh & Co. Verfahren und Anordnung zum Aufbringen eines flüssigen Mediums auf eine bewegte Oberfläche
JP2006327198A (ja) * 2005-05-23 2006-12-07 Heidelberger Druckmas Ag 液体を塗布する装置
DE202006003265U1 (de) 2006-02-28 2006-04-27 Herbert Olbrich Gmbh & Co. Kg Vorrichtung zum Beschichten
US20070283826A1 (en) * 2006-06-07 2007-12-13 Morin Philip K Synchronous flexographic printing press with fluid distribution and control system

Also Published As

Publication number Publication date
JP5596700B2 (ja) 2014-09-24
JP2012510889A (ja) 2012-05-17
KR101628862B1 (ko) 2016-06-09
KR20110091435A (ko) 2011-08-11
EP2217384A1 (fr) 2010-08-18
ES2394300T3 (es) 2013-01-30
DE202008016098U1 (de) 2009-03-05
US20110048318A1 (en) 2011-03-03
US8424482B2 (en) 2013-04-23
WO2010063429A1 (fr) 2010-06-10

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