EP1782891B1 - Méthode et appareil pour le dépôt d'au moins deux couches de peinture sur la surface d'une bande continue, en particulier d'une bande continue de papier ou de carton - Google Patents

Méthode et appareil pour le dépôt d'au moins deux couches de peinture sur la surface d'une bande continue, en particulier d'une bande continue de papier ou de carton Download PDF

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Publication number
EP1782891B1
EP1782891B1 EP06122981A EP06122981A EP1782891B1 EP 1782891 B1 EP1782891 B1 EP 1782891B1 EP 06122981 A EP06122981 A EP 06122981A EP 06122981 A EP06122981 A EP 06122981A EP 1782891 B1 EP1782891 B1 EP 1782891B1
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EP
European Patent Office
Prior art keywords
web
coating
curtain
colour
curtain 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.)
Not-in-force
Application number
EP06122981A
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German (de)
English (en)
Other versions
EP1782891A3 (fr
EP1782891A2 (fr
Inventor
Takeo Nakazawa
Tadashi Sasa
Toshio Hirano
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
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Publication date
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Publication of EP1782891A2 publication Critical patent/EP1782891A2/fr
Publication of EP1782891A3 publication Critical patent/EP1782891A3/fr
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Publication of EP1782891B1 publication Critical patent/EP1782891B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • 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
    • 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
    • B05C9/06—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 two different liquids or other fluent materials, or the same liquid or other fluent material twice, to the same side of the work

Definitions

  • the present invention relates to a method and a device for at least two-layer application of coating color on the surface of a moving web, in particular paper or board web, using a coating device, in which for the at least two-layer application of coating color at least two arranged at any distance Vorhangstreichkexcellent which are each coating color down to the web provided and wherein on a guide plate on which the successively from the above Vorhangstreichgropfen in the direction of an inclined plane of the guide plate down respective coating colors to form a layer of at least two layers of paint in the course of their movement over the oblique plane are laminated and said color layers are delivered in the form of a color curtain to the surface of the moving web.
  • a coating color or coating composition or a coating medium is applied to a serving as a base paper base sheet using a coater and then dried.
  • the devices used in the coating application for this purpose are referred to as coating machines.
  • squeegee element by means of squeegee element include the high maintenance and other associated costs due to, for example, the large amount of coating ink penetrating the paper, and further due to the wear of the doctor elements. This wear is caused, for example, by the fluid pressure and pressure forces acting on the application of the coating color.
  • curtain coater in which a curtain-shaped coating film from a curtain coating head comprising a spray nozzle chamber for forming a curtain film of coating paint is applied to a traveling web to form a coating layer
  • curtain coaters have been used in the field of photographic printing paper production for many years, curtain coaters in the paper industry often remain unused due to the instability of the coating, which is due to the instability of the coating curtain due to draft, bubble entrapment and lack of mechanical precision at high operating speeds.
  • curtain coaters over the prior art post-mark coaters include simplified maintenance by eliminating wearing parts such as doctoring elements, ie blades and round spreading bars, simple high-precision setting of the application amount, improved operability and a strong improvement in surface properties in relation to the outline stroke.
  • FIG.4 shows a major part cross-section of a two-layer curtain coater used for this purpose.
  • the coating colors ta, tb are applied from above Vorhangstreichköpfen a, b as color curtains ca, cb in a direction of the arrow moving web w and form on the surface of the web w a two-layer line consisting of the layers sa, sb.
  • a coating layer is usually formed as a first layer on the film surface, and the coating layer sb is usually formed as a second layer on the surface of the first coating layer sa.
  • FIG. 5 shows the cross section of a known two-layer coating device.
  • the coating colors ta, tb are dispensed from a dual curtain coating head c as overlapped two-layer color curtains ca, cb, following in the same manner as in FIG FIG. 4 a two-layer coating layer sa, sb on the surface a running web w is formed.
  • the known device is at different composition of the coating colors ta, tb, the first layer ca of the color curtain wider than the web w, the other layer cb of the color curtain, which is narrower than the web w, does not flow over the web w.
  • the overflowing color ta can be collected and recycled for reuse for the application of a coating layer same recipe for liquid feed. Note that during free fall, the color curtain will shrink in width due to changes in surface tension.
  • the present invention has for its object to avoid the disadvantages of the prior art.
  • the object of the invention is achieved by a method and a device such that the curtain coating heads are laterally displaceable to the web, wherein the width of the coating discharged from one of the Vorhangstreichköpfe width is greater than the web width, the width of the dispensed from the other Vorhangstreichkopf coating color is smaller than the web width and an offset sensor for detecting the roll misalignment of the web is provided.
  • the position of the two curtain coating heads in the lateral direction is controlled by signals supplied by the displacement sensor so that it corresponds to the rolling offset of the web.
  • the beneficial effects of the coater and coating method of the present invention include, for example, facilitating a trouble-free stroke even with skew-related paper misalignment and further enabling easy color recovery and system rinse with water before and after brushing.
  • the coating device according to the invention is a coating device 1 for the two-layer application of coating colors provided in the example to a moving, ie traveling web w.
  • the device 1 includes two curtain coating heads 1a, 1b arranged at any desired distance from each other for the downwardly directed delivery of corresponding coating colors.
  • the symbol 2 refers to a guide plate, on which the two successive Vorhangstreichkopf 1a, 1b down in the direction of an inclined plane 2a successively applied coating colors are laminated so that they in the course of their movement over the inclined plane 2a in a corresponding order form multi-layered or here two-layer paint layer.
  • a downward-pointing curtain guide 2b is provided at the lower end of said inclined plane 2a.
  • This curtain guide directs the curtain down onto the surface of the web w where a uniform laminated overlay sa resulting from the curtain ca and an upper overlay sb resulting from the curtain cb are formed.
  • the color curtain ca is wider than the web w and, as in FIG. 3 (A) to see, on both sides of the web w out flowing portion of the color curtain ca in a paint tray 3 is collected.
  • the apparatus includes means for recovering the coating color to independently collect and recycle all ink discharged from the curtain coating heads 1a, 1b prior to coating the web.
  • the ink recovery means includes a paint tray 4a which is wider than the ink discharged from the curtain coating head 1a and intended for the recovery of the total amount of ink and water discharged by the curtain coating head 1a, and a color tray 4b which is wider than the ink discharged from the curtain coating head 1b the recovery of the total quantity of paint and water discharged by the curtain coating head 1a is determined, using a pump, not shown in the figures, the entire collected in the ink pans 4a, 4b color returns to the corresponding raw material supply systems. It should be mentioned that in FIG. 3 (B) only the guide plate 2 is moved.
  • the curtain coating heads 1a, 1b are displaceable in the lateral direction of the web w. That is, the curtain coating heads 1a, 1b have a sliding part 5.
  • the sliding part 5, which includes a rail 5a and an engaging part 5b engaging in the rail 5a, is driven by an actuator 8.
  • the actuator 8 may be a hydraulic cylinder or a servo cylinder.
  • the width of the ink discharged from the curtain coating head la is greater than the width of the web w, and the width of the ink discharged from the curtain coating head 1b is smaller than the width of the web w.
  • the symbol 6 denotes an offset sensor for detecting the roll offset of the web w.
  • the offset sensor 6 may, for example, represent a device for detecting the position of a web edge using a CCD camera.
  • the offset sensor 6 sends signals to a controller 7 and sends control signals to the actuators 8, 8a, 8b of the curtain coaters 1a, 1b to laterally change the position of the curtain coaters 1a, 1b to match the skew offset of FIG Train correspond.
  • the solid line indicates the mean position of the web w
  • the broken line indicates the curl thereof
  • x indicates the distance between the middle position and the offset position.
  • the center positions of the curtain coating heads 1a, 1b are shown with solid lines, and the state after the movement made by the actuators 8a, 8b is indicated by the broken lines. The size of this movement (adjustment path) corresponds to x.
  • the coating color can be easily recovered before and after painting and the system rinsed with water become.
  • the width of the ink discharged from the curtain coating head la larger than the web width and the width of the ink discharged from the curtain coating head 1b smaller than the web width, whereby their color remains all on the web w, even if the two curtain coating heads have separate colors use, the color can be easily recovered without mixing between the color curtain cb and the over the two edges of the web w out flowing portions of the color curtain ca.
  • the present invention is not limited to the embodiment described above, and accordingly, a number of changes can be made thereto within the spirit of the present invention.
  • a CCD camera as an offset sensor
  • other types of sensors such as a photoelectric cell sensor may be used.

Landscapes

  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paper (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Claims (9)

  1. Procédé pour le dépôt d'au moins deux couches d'enduit de couchage sur la surface d'une bande continue (w), en particulier d'une bande de papier ou de carton, en utilisant un dispositif de couchage (1), dans lequel il est prévu au moins deux têtes de couchage à rideau (1a, 1b) disposées à une distance quelconque l'une de l'autre pour le dépôt d'au moins deux couches d'enduit de couchage et délivrant chacune un enduit de couchage vers le bas sur la bande (w), et dans lequel les enduits de couchage respectifs délivrés vers le bas par les têtes de couchage à rideau précitées, l'un après l'autre dans la direction d'un plan incliné (2a) d'une tôle de guidage (2), sont laminés sur la tôle de guidage (2) en formant un dépôt d'au moins deux couches d'enduit au cours de leur mouvement au-dessus du plan incliné et les couches d'enduit précitées sont délivrées sous la forme d'un rideau d'enduit (ca, cb) sur la surface de la bande continue (w), caractérisé en ce que l'on déplace les têtes de couchage à rideau (1a, 1b) latéralement par rapport à la bande (w), dans lequel on détecte un décalage de lacet de la bande (w) au moyen d'un détecteur de décalage (6), et on commande la position des têtes de couchage à rideau (1a, 1b) en direction latérale au moyen de signaux fournis par le détecteur de décalage (6), de telle manière qu'elle corresponde au décalage de lacet de la bande.
  2. Procédé selon la revendication 1, caractérisé en ce que l'on déplace les têtes de couchage à rideau (1a, 1b) latéralement par rapport à la bande (w) avec un organe de commande (8), dans lequel l'organe de commande (8) reçoit des signaux du détecteur de décalage de lacet (6) par l'intermédiaire d'un appareil de commande (7).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'on peut recueillir et renvoyer tout l'enduit de couchage délivré par les têtes de couchage à rideau (1a, 1b).
  4. Dispositif (1) pour le dépôt d'au moins deux couches d'enduit de couchage sur la surface d'une bande continue (w), en particulier une bande de papier ou de carton, comprenant:
    - au moins deux têtes de couchage à rideau (1a, 1b) disposées à une distance quelconque l'une de l'autre, qui délivrent chacune un enduit de couchage vers le bas sur la bande (w),
    - une tôle de guidage (2), sur laquelle les enduits de couchage respectifs délivrés vers le bas par les au moins deux têtes de couchage à rideau (1a, 1b) précitées, l'un après l'autre dans la direction d'un plan incliné (2a), sont laminés en formant un dépôt d'au moins deux couches au cours de leur mouvement sur le plan incliné (2a),
    caractérisé en ce que les têtes de couchage à rideau (1a, 1b) sont déplaçables latéralement par rapport à la bande (w) et il est prévu un détecteur de décalage (6) pour détecter un décalage de lacet de la bande (w) et pour régler la position des têtes de couchage à rideau (1a, 1b) en direction latérale, de telle manière que la position des têtes de couchage à rideau (1a, 1b) puisse être commandée au moyen de signaux fournis par le détecteur de décalage (6), de telle manière qu'elle corresponde au décalage de lacet de la bande (w).
  5. Dispositif selon la revendication 4, caractérisé en ce qu'il est prévu un guidage de rideau (2b) dirigé vers le bas à l'extrémité inférieure du plan incliné précité (2a), pour l'évacuation de la couche d'enduit laminée sous la forme d'un rideau d'enduit (ca, cb).
  6. Dispositif selon la revendication 4 ou 5, caractérisé en ce qu'il est prévu des moyens (4a, 4b) pour recueillir et renvoyer l'enduit de couchage délivré par les têtes de couchage à rideau (1a, 1b).
  7. Dispositif selon l'une quelconque des revendications 4 à 6, caractérisé en ce que les têtes de couchage à rideau (1a, 1b) présentent chacune une partie coulissante (5) avec un rail (5a) et une partie suspendue (5b) engagée dans le rail (5a).
  8. Dispositif selon la revendication 7, caractérisé en ce que la partie coulissante (5) peut être entraînée avec un organe de commande (8), dans lequel l'organe de commande (8) reçoit des signaux du détecteur de décalage de lacet (6) par l'intermédiaire d'un appareil de commande (7).
  9. Dispositif selon l'une quelconque des revendications 4 à 8, caractérisé en ce que la largeur de l'enduit de couchage délivré par la première tête de couchage à rideau (1a) est plus grande que la largeur de la bande (w) et la largeur de l'enduit de couchage délivré par la deuxième tête de couchage à rideau (1b) est plus petite que la largeur de la bande (w).
EP06122981A 2005-11-01 2006-10-26 Méthode et appareil pour le dépôt d'au moins deux couches de peinture sur la surface d'une bande continue, en particulier d'une bande continue de papier ou de carton Not-in-force EP1782891B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005318582A JP4902984B2 (ja) 2005-11-01 2005-11-01 塗工装置および塗工方法

Publications (3)

Publication Number Publication Date
EP1782891A2 EP1782891A2 (fr) 2007-05-09
EP1782891A3 EP1782891A3 (fr) 2008-05-07
EP1782891B1 true EP1782891B1 (fr) 2009-09-16

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Application Number Title Priority Date Filing Date
EP06122981A Not-in-force EP1782891B1 (fr) 2005-11-01 2006-10-26 Méthode et appareil pour le dépôt d'au moins deux couches de peinture sur la surface d'une bande continue, en particulier d'une bande continue de papier ou de carton

Country Status (4)

Country Link
EP (1) EP1782891B1 (fr)
JP (1) JP4902984B2 (fr)
AT (1) ATE442913T1 (fr)
DE (1) DE502006004846D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007029646A1 (de) * 2007-06-26 2009-01-08 Voith Patent Gmbh Auftragsverfahren sowie Vorhangauftragswerk
DE102007000781A1 (de) 2007-09-27 2009-04-02 Voith Patent Gmbh Auftragsvorrichtung
DE102007000782A1 (de) 2007-09-27 2009-04-02 Voith Patent Gmbh Auftragsvorrichtung zum Auftragen wenigstens zweier Schichten auf eine Papier-, Karton- oder andere Faserstoffbahn
CN102773200B (zh) * 2012-08-09 2014-12-17 深圳市浩能科技有限公司 一种挤压模头调节装置
WO2018030944A1 (fr) * 2016-08-09 2018-02-15 Ikea Supply Ag Dispositif et procédé permettant d'appliquer de la peinture sur des objets
WO2019131083A1 (fr) * 2017-12-28 2019-07-04 コアレックス信栄株式会社 Procédé de production de papier désodorisant

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Publication number Priority date Publication date Assignee Title
GB1321474A (en) * 1970-10-19 1973-06-27 British Iron Steel Research Method and apparatus for guiding sheet
DE19631888A1 (de) * 1996-08-07 1998-02-12 Voith Sulzer Papiermasch Gmbh Auftragwerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Streichmediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
DE10057729A1 (de) * 2000-11-22 2002-05-23 Voith Paper Patent Gmbh Vorhang-Auftragsvorrichtung
US6706315B2 (en) * 2001-09-17 2004-03-16 Xerox Corporation Coating process for coating die with laser position sensors
JP2003241405A (ja) * 2001-12-12 2003-08-27 Xerox Corp 光伝導体の被覆工程
DE20321815U1 (de) * 2003-05-06 2010-07-22 Voith Patent Gmbh Mehrschicht-Auftragsvorrichtung zum Auftragen von Auftragsmedium im Wege wenigstens eines mehrschichtigen Vorhangs oder Schleiers
JP2005230683A (ja) * 2004-02-19 2005-09-02 Nippon Steel Corp 塗装鋼板の製造方法及び鋼板の塗装設備
JP4746894B2 (ja) * 2005-03-14 2011-08-10 ボイス ペ−パ− パテント ゲ−エムベ−ハ− 塗工装置
JP4902160B2 (ja) * 2005-09-22 2012-03-21 ボイス ペ−パ− パテント ゲ−エムベ−ハ− 塗工装置

Also Published As

Publication number Publication date
EP1782891A3 (fr) 2008-05-07
ATE442913T1 (de) 2009-10-15
DE502006004846D1 (de) 2009-10-29
EP1782891A2 (fr) 2007-05-09
JP2007125464A (ja) 2007-05-24
JP4902984B2 (ja) 2012-03-21

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