EP1782891A2 - 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
EP1782891A2
EP1782891A2 EP06122981A EP06122981A EP1782891A2 EP 1782891 A2 EP1782891 A2 EP 1782891A2 EP 06122981 A EP06122981 A EP 06122981A EP 06122981 A EP06122981 A EP 06122981A EP 1782891 A2 EP1782891 A2 EP 1782891A2
Authority
EP
European Patent Office
Prior art keywords
web
coating
curtain
color
heads
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.)
Granted
Application number
EP06122981A
Other languages
German (de)
English (en)
Other versions
EP1782891A3 (fr
EP1782891B1 (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 Paper 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 filed Critical Voith Paper Patent GmbH
Publication of EP1782891A2 publication Critical patent/EP1782891A2/fr
Publication of EP1782891A3 publication Critical patent/EP1782891A3/fr
Application granted granted Critical
Publication of EP1782891B1 publication Critical patent/EP1782891B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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 main 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 an im Japanese Patent S62-47075 disclosed two-coat coater.
  • the coating colors ta, tb are dispensed from a dual curtain coating head c as overlapped two-layer color curtains ca, cb, followed in the same manner as in FIG. 4 a two-layer coating layer sa, sb on the surface a running web w is formed.
  • the coefficient of friction therebetween is large enough to allow uniform line expansion along the web surface w, which in turn provides for the normal formation of a uniform defect-free overlay. sb allows.
  • the first layer ca of the color curtain is wider than the web w
  • the other layer cb of the color curtain which is narrower than 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-coat coating of coating colors provided in the example for a moving, i.e., a coating, coating operation. running track 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 shown in FIG. 3 (A), the portion of the color curtain c a flowing over the web w on both sides is collected in a paint trough 3.
  • the apparatus includes means for recovering the coating color to independently absorb and recycle all the 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 its rolling position
  • 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

  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
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 true EP1782891A2 (fr) 2007-05-09
EP1782891A3 EP1782891A3 (fr) 2008-05-07
EP1782891B1 EP1782891B1 (fr) 2009-09-16

Family

ID=37695983

Family Applications (1)

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)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007000782A1 (de) 2007-09-27 2009-04-02 Voith Patent Gmbh Auftragsvorrichtung zum Auftragen wenigstens zweier Schichten auf eine Papier-, Karton- oder andere Faserstoffbahn
DE102007000781A1 (de) 2007-09-27 2009-04-02 Voith Patent Gmbh Auftragsvorrichtung
WO2018030944A1 (fr) * 2016-08-09 2018-02-15 Ikea Supply Ag Dispositif et procédé permettant d'appliquer de la peinture sur des objets

Families Citing this family (3)

* 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
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
KR102148636B1 (ko) * 2017-12-28 2020-08-26 코어렉스신에이가부시키가이샤 소취지의 제조 방법

Citations (4)

* Cited by examiner, † Cited by third party
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
US20030054107A1 (en) * 2001-09-17 2003-03-20 Xerox Corporation Coating die with laser position sensors
EP1475162A2 (fr) * 2003-05-06 2004-11-10 Voith Paper Patent GmbH Dispositif de revêtement multicouche par rideau

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10057729A1 (de) * 2000-11-22 2002-05-23 Voith Paper Patent Gmbh Vorhang-Auftragsvorrichtung
JP2003241405A (ja) * 2001-12-12 2003-08-27 Xerox Corp 光伝導体の被覆工程
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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
US20030054107A1 (en) * 2001-09-17 2003-03-20 Xerox Corporation Coating die with laser position sensors
EP1475162A2 (fr) * 2003-05-06 2004-11-10 Voith Paper Patent GmbH Dispositif de revêtement multicouche par rideau

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007000782A1 (de) 2007-09-27 2009-04-02 Voith Patent Gmbh Auftragsvorrichtung zum Auftragen wenigstens zweier Schichten auf eine Papier-, Karton- oder andere Faserstoffbahn
DE102007000781A1 (de) 2007-09-27 2009-04-02 Voith Patent Gmbh Auftragsvorrichtung
WO2018030944A1 (fr) * 2016-08-09 2018-02-15 Ikea Supply Ag Dispositif et procédé permettant d'appliquer de la peinture sur des objets

Also Published As

Publication number Publication date
ATE442913T1 (de) 2009-10-15
EP1782891A3 (fr) 2008-05-07
DE502006004846D1 (de) 2009-10-29
JP2007125464A (ja) 2007-05-24
EP1782891B1 (fr) 2009-09-16
JP4902984B2 (ja) 2012-03-21

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