EP1767282A2 - Appareillage de couchage - Google Patents

Appareillage de couchage Download PDF

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Publication number
EP1767282A2
EP1767282A2 EP06120811A EP06120811A EP1767282A2 EP 1767282 A2 EP1767282 A2 EP 1767282A2 EP 06120811 A EP06120811 A EP 06120811A EP 06120811 A EP06120811 A EP 06120811A EP 1767282 A2 EP1767282 A2 EP 1767282A2
Authority
EP
European Patent Office
Prior art keywords
coating
guide
web
curtain
layer
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.)
Ceased
Application number
EP06120811A
Other languages
German (de)
English (en)
Other versions
EP1767282A3 (fr
Inventor
Tadashi Sasa
Akio Hirano
Hiroyuki Kohno
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 EP1767282A2 publication Critical patent/EP1767282A2/fr
Publication of EP1767282A3 publication Critical patent/EP1767282A3/fr
Ceased legal-status Critical Current

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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
    • B05C5/007—Slide-hopper coaters, i.e. apparatus in which the liquid or other fluent material flows freely on an inclined surface before contacting the work
    • B05C5/008—Slide-hopper 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
    • 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 coating device for the multi-layer application of coating color, in particular coating medium on the surface of a moving web, in particular a coated base paper web.
  • coated paper for use as, for example, general printing paper for catalogs and the like, pressure-sensitive paper, heat-sensitive paper, and tickets for ticket vending machines has hitherto usually been carried out by using a coater with "subsequent" coating weight determination (for example, doctor blade coater) by coating the coating medium or coating medium applied to the surface of a serving as a base paper base sheet and then the weight is determined.
  • the devices used to apply this coating are generally referred to as "coating machines”.
  • the coating machines most commonly used to date, that is doctor blade, doctor blade and air knife coater, use a post-weight determination method in which the measurement of the coating weight is made after a single coating medium has been applied to the web surface.
  • curtain coaters coating machines having "upstream” draw weight determination
  • the coating application to a web surface is effected by coating the coating medium or the coating slip of at least one curtain coating head (or applicator) above the surface to be coated.
  • Another known method for the multilayer coating is the slide-die coating method.
  • FIG. 5a is a known coating device shown (schematic side view including partial cross-section). Coating media tc and td are emitted in such a way that they form color curtains tcc and tcd, which accumulate on a guide plate gs. In this case, the coating media tc, td overlap on the guide plate gs to form a multiple layer, which is applied to the surface of a web W.
  • the lower surface of the coating medium tc of the first layer is in contact with the guide bleach gs and further the upper surface of the coating medium td of the second layer is in contact with the atmosphere
  • the flow of the coating media tc, td limited by a guide plate angle ⁇ 3 and the casserole position of the curtain, which in turn affects the formation of the applied to the surface of the web W layers.
  • slip phenomena occur on the surface of the web W in the applied layer between the coating medium tc of the first layer and the coating medium td of the second layer, which in turn leads to the appearance of a scale-like pattern in the coating medium td of the second layer ,
  • FIG. 5b expanded view of the cross-section taken along line AA of FIG. 5a
  • the marginal areas of the coating medium will be affected td of the second layer can be formed on the web W as thickened layers td1, which can lead to contamination of the retractor and thus to winding defects as a result of insufficient drying of the thickly coated edge regions w1, w1 of the web W in the process step of drying.
  • the object of the present invention is to provide a coater capable of realizing a high-quality multilayer coating application on the surface of the web and capable of realizing a coating operation , in which the contamination of the machine is avoided by coating medium.
  • the coating apparatus for applying spreadable coating, in particular coating paint in multiple layers on the surface of a moving web comprises a plurality of spaced-apart Vorhangstreichköpfen that give spread media down.
  • the coating apparatus further comprises a slanted guide on which a multi-layer coating layer is formed by lamination in the order of the spread media discharged from each of the aforementioned plurality of curtain coating heads toward an inclined plane and the coating medium, respectively, as they move along this inclined plane.
  • a movable guide is provided, which is provided along a curved edge of the inclined plane of said inclined guide and which directs the multilayer coating layer on the aforementioned inclined guide in the direction of the underlying web surface to form a moving and laying on the web surface curtain.
  • the inclined plane of the aforementioned inclined guide relative to the horizontal plane downwardly directed to the web surface inclination of 10 to 50 °.
  • the distance between the curved edge of the aforesaid oblique guide and the casserole point of the coating medium dispensed from the last curtain coating head on the aforementioned inclined guide is between 0 and 1 m.
  • the flow velocity distribution within each individual coating layer on the inclined guide can be changed to the optimum value, so that, as a result, an increased quality of the coated product is achieved.
  • the edge regions of the applied on the web surface coating layer are applied flat and without elevation, which causes a further improvement in quality as a result.
  • the aforementioned movable guide is designed to be rotationally adjustable with respect to the aforementioned inclined guide.
  • the movable guide can be set to the optimum angle according to the inclination angle of the inclined guide in a simple manner.
  • the aforesaid movable guide is provided to incline in the normal to the curved edge of the aforesaid oblique guide, or to incline from the perpendicular to the aforesaid inclined guide side.
  • FIG. 2 shows, as a right-hand schematic view, the positional relationship between the oblique guide gp and the curtain coating heads 11 and 12 from FIG. 1.
  • the coating apparatus 1 includes a slanted guide gp having an inclined plane that discharges the coating medium, ie, the coating medium ta of the first layer and the coating medium or the coating medium tb of the second layer in a two-layered state onto a web surface w, a first curtain coating head 11 which discharges the coating medium ta of the first layer down to the oblique plane gp formed in the form of an inclined plane to form a medium curtain tac, and a second one Curtain coating head 12, the second coating medium tb of the layer to form a medium curtain tbc down on the along the inclined guide gp moving coating medium ta emits.
  • a slanted guide gp having an inclined plane that discharges the coating medium, ie, the coating medium ta of the first layer and the coating medium or the coating medium tb of the second layer in a two-layered state onto a web surface w
  • a first curtain coating head 11 which discharges the coating medium ta of the first layer down
  • the skew guide gp is formed with an inclined plane having the inclination angle ⁇ 1 inclined downwardly from the horizontal plane toward the trajectory w moving in the direction of the arrow ⁇ (see Fig. 1). It should be noted that the inclination angle ⁇ 1, which is the inclination angle with respect to the horizontal plane of FIG. 2 illustrated inclined guide gp is set to a value between 10 and 50 °.
  • the first curtain coating head 11 discharges the coating medium ta provided by a pump (not shown in the drawing) to form the medium curtain tac, which runs on the downwardly inclined inclined guide gp.
  • the coating medium ta running onto the inclined guide gp forms a first application layer, which is guided in the direction of the surface of the moving web w due to the inclined plane of the inclined guide gp.
  • the second curtain coating head 12 connected downstream of the first curtain coating head 11 emits the coating medium tb provided by a pump (not shown in the drawing) in the direction of the coating medium ta located on the inclined guide gp, forming the curtain tbc, which projects onto the coating medium ta on the inclined guide gp runs.
  • the coating medium or coating medium tb accumulating on the coating medium ta forms a second coating layer which together with the first coating layer ta forms a laminate which is guided in the direction of the surface of the moving web w owing to the inclined plane of the inclined guide gp.
  • the width s1 of the coating medium tb guided by the inclined guide gp is set narrower than the width of the coating medium ta of the first coating layer located on the inclined guide gp (see FIG.
  • the distance L1 between a curved edge gp1 of the helical guide gp and a helix point gp2 on the helical guide gp of the coating medium tb, which is from the last, i.e. next to the curved edge gp1 located second curtain coating head 12 is set to a value between 0 and 1 m.
  • FIG. 3 which shows an expanded view of section B around the curved edge gp1 of the oblique guide gp of FIG. 2, moreover, along the curved edge gp1 of the oblique guide gp vertically downward, there is continuously provided a movable guide cg conveying the coating media ta, tb to the surface of the web w, this movable guide cg being rotationally adjustable with respect to the inclined guide gp is as shown by the arrow ⁇ .
  • a two-layer coating application is formed on the surface of the web w via a two-layer medium or color curtain tc, which is formed from the coating medium ta, tb brought over the movable guide cg and applied and moved on the surface of the moving web w realized.
  • the movable guide cg may be changed as shown in FIG. 3, according to set perpendicular thereto.
  • the coating medium ta is discharged from the first curtain 11, forming a curtain tac running up to the inclined guide gp, in the direction of the inclined plane of the inclined guide gp.
  • the coating medium ta forms a first application layer and, as shown in FIG. 1, due to the downward inclination of the skewed guide gp (inclination angle ⁇ 1) at the slant guide gp is fed and moved along the surface of the traveling web W.
  • the coating medium tb is emitted by the downstream second curtain coating head 12 in the direction of the coating medium ta traveling downwards along the inclined guide gp and forms a color curtain tbc which runs onto the coating medium ta, which moves along the inclined guide gp.
  • the coating medium tb which runs onto the coating medium ta located on the inclined guide gp, forms a second coating layer and, together with the coating medium ta of the first coating layer, a two-layer layer which is guided along the inclined guide gp to the surface of the web W.
  • the coating media ta, tb which form a two-layer application layer migrating via the inclined guide gp, are transported in this way from the inclined guide gp to the movable guide cg, from where they are deposited on the two sides in the form of a curtain tc in two-layered form Surface of moving in the direction of arrow ⁇ web w are moved and applied.
  • the edge portions of the coating media ta, tb applied to the surface of the web W are not formed as raised portions and instead as plane coating layers on the surface of the web W (see td1 in FIG 5b), resulting in increased line quality as a result of the invention.
  • the flow restrictions of the coating medium ta, which are due to the friction coefficient, etc., of the skew guide gp at the contact surface between the coating medium ta and the skewed guide gp can be improved by the change of the inclination angle ⁇ 1. The same effect is achieved between multilayer coating media.
  • the flow velocity distribution within the coating media ta, tb can be changed by setting the inclination angle ⁇ 1 to the optimum value, resulting in an increase in quality.
  • the angle of the movable guide cg can be changed and adjusted by the structural design that the operation can be realized with an optimal angle by changing the inclination angle ⁇ 1 of the inclined guide gp, also a good liquid separation between the coating media ta, tb and the inclined guide gp and the movable guide cg reached. In addition, it is largely prevented that the inclined guide gp and the movable guide cg are contaminated by the coating media.
  • the description given in this embodiment relates to an example in which the coating medium ta, tb are applied in a multi-layered manner to only one surface or a web side of a web W, but analogously thereto, the multi-layer coating naturally and obviously the other web side of the web W is possible.
  • the present embodiment gives an example in which the inclined guide gp and the movable guide cg are arranged separately and the movable guide cg is rotationally adjustable with respect to the inclined guide gp, the inclined guide gp and the movable guide cg can be integrally arranged.
  • Examples of the practical application of the present invention include coating devices for application of coating medium to, for example, calender, catalog, pressure-sensitive paper, heat-sensitive paper and photo film papers and, moreover, coating devices for applying a magnetic material to a ticket side for use in Ticket and vending machines.

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  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP06120811A 2005-09-22 2006-09-18 Appareillage de couchage Ceased EP1767282A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005275609A JP4902160B2 (ja) 2005-09-22 2005-09-22 塗工装置

Publications (2)

Publication Number Publication Date
EP1767282A2 true EP1767282A2 (fr) 2007-03-28
EP1767282A3 EP1767282A3 (fr) 2008-04-16

Family

ID=37533460

Family Applications (1)

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EP06120811A Ceased EP1767282A3 (fr) 2005-09-22 2006-09-18 Appareillage de couchage

Country Status (2)

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EP (1) EP1767282A3 (fr)
JP (1) JP4902160B2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2070599A3 (fr) * 2007-12-05 2010-03-24 Voith Patent GmbH Unité d'application de rideau
WO2010069776A1 (fr) * 2008-12-18 2010-06-24 Voith Patent Gmbh Unité d’application de rideau
WO2015095648A1 (fr) * 2013-12-20 2015-06-25 NuvoSun, Inc. Appareil de dépôt d'un bain chimique sur une toile

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4902984B2 (ja) * 2005-11-01 2012-03-21 ボイス ペ−パ− パテント ゲ−エムベ−ハ− 塗工装置および塗工方法
JP4902983B2 (ja) * 2005-11-01 2012-03-21 ボイス ペ−パ− パテント ゲ−エムベ−ハ− 塗工装置および塗工方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2329019A1 (de) * 1968-11-22 1975-01-02 Vepa Ag Vorrichtung zum kontinuierlichen aufbringen einer behandlungsfluessigkeit auf ein bahnfoermiges gut
EP0019035A1 (fr) * 1979-02-16 1980-11-26 Eduard Küsters Maschinenfabrik Procédé et installation pour décorer des matières en bandes
DE3333592A1 (de) * 1983-09-16 1985-04-18 Brückner-Apparatebau GmbH, 6120 Erbach Vorrichtung zum aufbringen eines fluessigkeitsfilmes auf eine warenbahn
WO1991018140A1 (fr) * 1990-05-18 1991-11-28 Eduard Küsters Maschinenfabrik GmbH & Co. KG Plaque d'ecoulement pour un dispositif destine a appliquer un film liquide sur une nappe de tissu
DE4203086C1 (en) * 1992-02-04 1993-05-27 Sollich Gmbh & Co Kg, 4902 Bad Salzuflen, De Appts. for coating chocolate material on food pieces - comprises mesh belt carrying pieces through vertical flowing curtain of coating material, preliminary curtain being formed by passing material over frame
EP1209274A2 (fr) * 2000-11-22 2002-05-29 Voith Paper Patent GmbH Enduiseuse à rideau
EP1475162A2 (fr) * 2003-05-06 2004-11-10 Voith Paper Patent GmbH Dispositif de revêtement multicouche par rideau

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2712259C3 (de) * 1976-03-23 1979-10-04 E.I. Du Pont De Nemours And Co., Wilmington, Del. (V.St.A.) Verfahren und Vorrichtung zum Beschichten einer Substratoberfläche mit mindestens einer Fluidschicht
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2329019A1 (de) * 1968-11-22 1975-01-02 Vepa Ag Vorrichtung zum kontinuierlichen aufbringen einer behandlungsfluessigkeit auf ein bahnfoermiges gut
EP0019035A1 (fr) * 1979-02-16 1980-11-26 Eduard Küsters Maschinenfabrik Procédé et installation pour décorer des matières en bandes
DE3333592A1 (de) * 1983-09-16 1985-04-18 Brückner-Apparatebau GmbH, 6120 Erbach Vorrichtung zum aufbringen eines fluessigkeitsfilmes auf eine warenbahn
WO1991018140A1 (fr) * 1990-05-18 1991-11-28 Eduard Küsters Maschinenfabrik GmbH & Co. KG Plaque d'ecoulement pour un dispositif destine a appliquer un film liquide sur une nappe de tissu
DE4203086C1 (en) * 1992-02-04 1993-05-27 Sollich Gmbh & Co Kg, 4902 Bad Salzuflen, De Appts. for coating chocolate material on food pieces - comprises mesh belt carrying pieces through vertical flowing curtain of coating material, preliminary curtain being formed by passing material over frame
EP1209274A2 (fr) * 2000-11-22 2002-05-29 Voith Paper Patent GmbH Enduiseuse à rideau
EP1475162A2 (fr) * 2003-05-06 2004-11-10 Voith Paper Patent GmbH Dispositif de revêtement multicouche par rideau

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2070599A3 (fr) * 2007-12-05 2010-03-24 Voith Patent GmbH Unité d'application de rideau
WO2010069776A1 (fr) * 2008-12-18 2010-06-24 Voith Patent Gmbh Unité d’application de rideau
WO2015095648A1 (fr) * 2013-12-20 2015-06-25 NuvoSun, Inc. Appareil de dépôt d'un bain chimique sur une toile
CN105874099A (zh) * 2013-12-20 2016-08-17 纽升股份有限公司 基于板条的化学浴沉积设备
US9818906B2 (en) 2013-12-20 2017-11-14 NuvoSun, Inc. Web based chemical bath deposition apparatus

Also Published As

Publication number Publication date
JP4902160B2 (ja) 2012-03-21
JP2007083170A (ja) 2007-04-05
EP1767282A3 (fr) 2008-04-16

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