EP1728561B1 - Zweischicht-Vorhangstreichmaschine - Google Patents

Zweischicht-Vorhangstreichmaschine Download PDF

Info

Publication number
EP1728561B1
EP1728561B1 EP06111144A EP06111144A EP1728561B1 EP 1728561 B1 EP1728561 B1 EP 1728561B1 EP 06111144 A EP06111144 A EP 06111144A EP 06111144 A EP06111144 A EP 06111144A EP 1728561 B1 EP1728561 B1 EP 1728561B1
Authority
EP
European Patent Office
Prior art keywords
curtain
coating
nozzle
layer
curtain nozzle
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
EP06111144A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1728561A1 (de
Inventor
Hirofumi Morita
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 EP1728561A1 publication Critical patent/EP1728561A1/de
Application granted granted Critical
Publication of EP1728561B1 publication Critical patent/EP1728561B1/de
Not-in-force 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
    • 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
    • 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
    • B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/30—Processes for applying liquids or other fluent materials performed by gravity only, i.e. flow coating
    • B05D1/305—Curtain coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/34—Applying different liquids or other fluent materials simultaneously
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/46—Pouring or allowing the fluid to flow in a continuous stream on to the surface, the entire stream being carried away by the paper
    • D21H23/48—Curtain coaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/80—Paper comprising more than one coating
    • D21H19/82—Paper comprising more than one coating superposed

Definitions

  • the present invention relates to a two-layer curtain coater which provides a surface of a running paper, board or other fibrous web with a first coating composition consisting of a first coating slurry and a second coating composition consisting of a second coating slurry curtain two-coat coating slurry curtain and the first coating composition and applying the second coating slip in two superimposed layers to the surface of the fibrous web.
  • a coating machine which on the surface of a paper web (base paper) a first coating composition and a second coating material, which have different properties, in two layers crossed one another, for the production of heat-sensitive paper, in which on the surface of a paper web (base paper), a heat-sensitive coating as a color developer layer and a resin coating as a protective layer are coated, and for the production of art paper or coated paper, in which on the surface of a paper web (base paper) a coating for primer and a coating on the equipment are deleted, for example, in Fig. 4 shown conventional two-layer curtain coater A has been proposed.
  • a twin curtain nozzle N is provided above a transported paper web W.
  • a first coating slip C1 supplied from a first nozzle head Nh1 of the curtain nozzle N a first coating compound curtain C1c is formed, and one of a second nozzle head Nh2 is formed
  • a second coating mass curtain C2c is formed.
  • a surface Ws of the paper web W, which, as in Fig. 4 (b) is transported in the direction of the arrow X is provided with a two-layer coating curtain F, which is formed jointly by the first coating mass curtain C1 c and the second coating mass curtain C2c.
  • a first coating material layer C1I and a second coating material layer C2I are formed in two layers one above the other by brushing.
  • the coating material when the operation is to be started from a standstill and coating begins to flow in the nozzle, the coating material must be able to flow until stabilization of the coating mass flow, a coating mass curtain is formed in the stationary state. Before the start of the painting you have to let the coating slip out of the nozzle.
  • the two-layer coating curtain F supplied from the curtain nozzle N consists of a first coating slurry curtain C1c and a second coating slurry curtain C2c, there is a significant disadvantage that the first coating composition C1 and the second coating composition C2 can not be collected separately from each other.
  • the conventional two-layer curtain coating machine A since the first coating slip C1 and the second coating slip C2, which have been flown out of the curtain nozzle N during the coating preparation, are intermingled upon collection and reuse is difficult, the conventional two-layer curtain coating machine A has the disadvantage that during the course of the prior art Prepare a lot of first coat of paint C1 and second slip C2 to be consumed.
  • a multi-layer applicator is disclosed. With such a multi-layer application device, both individual curtains and those individual curtains are deliverable, which can be combined to form a multiple curtain, so that a multiple layer is formed on the moving surface.
  • the preparation phase collecting devices are provided, with each of which separately from each other, the respective application medium can be collected.
  • the EP A1-1 544 353 and the DE A1- 199 03 559 each show devices for curtain coating, with each of which a single layer can be applied.
  • the curtain dispensing nozzles are each assigned a collecting device for collecting the dispensed individual curtain.
  • Object of the present invention is to provide a two-layer curtain coater available, taking into account the aforementioned circumstances, which can avoid a coating mass loss in the coating preparation.
  • the object is achieved in that the two-layer curtain coater has a first curtain nozzle forming the first coating curtain and a second curtain nozzle forming the second coating curtain, and the first curtain nozzle and the second curtain nozzle are in a coating preparation position (standby position) where they are remote from each other, and a carding execution position (operating position) in which they are connected to each other and freely movable, wherein in the coating preparation position, the first coating slip and the second coating slip are collected separately by a first collecting tray for the first coating curtain from the first curtain nozzle and a second collecting tray is present for the second coating mass curtain from the second curtain nozzle and in the coating execution position, the two-layer coating mass curtain consisting of the first and the second coating mass curtain forms and deposits in two layers one above the other on the surface of the paper web.
  • the first coating slurry curtain from the first curtain nozzle is caught by the first collection tray, the second coating slurry curtain from the second one Curtain nozzle is collected with the second sump and thereby the first coating slip and the second coating slip unmixed and collected separately, the collected first coating slip and the collected second coating slip can be reused unchanged, so that a coating mass loss can be avoided in the coating preparation.
  • FIGS. 1 to 3 show an embodiment of the two-layer curtain coater according to the invention.
  • This two-layer curtain coating machine 1 has a pair of nozzles consisting of a first curtain nozzle 10 and a second curtain nozzle 20, which is arranged above a moving paper web (base paper) W.
  • the first curtain nozzle 10 and the second curtain nozzle 20 are provided in common along the transport direction of the paper web W indicated by an arrow X.
  • the first curtain nozzle 10 is a device that forms a first coating compound curtain C1c from the first coating slip C1 supplied from the nozzle head 10h, and is fixedly mounted in a fixed position over the paper web W.
  • the second curtain nozzle 20 is a device that forms a second coating slurry C2c from the second coating material C2 supplied from the nozzle head 20h, and is downstream of the first curtain nozzle 10 in the direction of transport of the paper web W.
  • the second curtain nozzle 20 is so freely movably supported by guide means 3, which consist of a guide track 3G and a slider 3S, on a carrier 2 which extends over the transporting direction of the paper web W so as to move toward the first curtain nozzle 10 this moved away.
  • guide means 3 consist of a guide track 3G and a slider 3S, on a carrier 2 which extends over the transporting direction of the paper web W so as to move toward the first curtain nozzle 10 this moved away.
  • the second curtain nozzle 20 is due to the operation of a provided between the second curtain nozzle 20 and the carrier 2 cylinder drive member 4 between the in Fig. 1 shown in prank preparation position, in which the second curtain nozzle 20 is removed from the first curtain nozzle 10, and the in Fig. 3 shown, in which the second curtain nozzle 20 is connected to the first curtain nozzle 10 moves.
  • the position of the fixed first curtain nozzle 10 is the coating preparation position
  • the position of the fixed first curtain nozzle 10 is the carding execution position
  • first curtain nozzle 10 and the second curtain nozzle 20 in the in Fig. 1 are shown below the first curtain nozzle 10, a first drip pan 11, and below the second curtain nozzle 20 is a second drip tray 21st
  • the first sump 11 is connected to the first curtain nozzle 10 (nozzle head 10h) via a pipe 13 provided between the first sump 11 and a pump 12, and the second sump 21 is connected via a pipe 23 between the second Drip pan 21 and a pump 22 is provided, with the second curtain nozzle 20 (nozzle head 20h) connected.
  • the first drip pan 11 and the second drip pan 21 are designed such that they can be moved between a working position (FIG. Fig. 1 ) directly below the first curtain nozzle 10 and the second curtain nozzle 20 located in the coating preparation position and one in the Figures 2 and 3 shown retreat position, that is, a position that is away from the position directly below located in the prank preparation position and Ausreichauspositionposition first curtain nozzle 10 and second curtain nozzle 20 can be moved with not shown guide means and drive means.
  • the two-layer curtain coater 1 configured as described above, as shown in FIG Fig. 1 in the course of the coating preparation, the first curtain nozzle 10 and the second curtain nozzle 20 are in the coating preparation position in which they are apart from each other and at the same time brings the first sump 11 and the second sump 21 to the working position directly below the first curtain nozzle 10 and the second curtain nozzle 20th
  • the first coating mass curtain C1c formed with a first coating slip C1 supplied from a nozzle head 10h
  • the second coating slurry curtain C2c flowing with a second coating slip C2c flows which is supplied from the nozzle head 20h.
  • the first coating mass curtain C1c flowing from the first curtain nozzle 10 is caught by the first collecting tray 11, and the first coating paste C1 collected in the first collecting tray 11 is passed through the operation of the pump 12 is returned via the tube 13 in the nozzle head 10h of the first curtain nozzle 10.
  • the second coating mass curtain C2c flowing from the second curtain nozzle 20 is collected with the second collecting tray 21, and the second coating paste C2 collected in the second collecting tray 21 is returned to the nozzle head 20h of the second curtain nozzle 20 via the pipe 23 through the operation of the pump 22.
  • the first coating slip C1 flowing out of the first curtain nozzle 10 and the second coating slip C2 flowing out of the second curtain nozzle 20 are caught by being separated from each other by the first collection tray 11 and the second collection tray 21, and between the first Curtain nozzle 10 and the first drip pan 11 and between the second curtain nozzle 20 and the second drip tray 21 are circulated, as indicated in each case by the arrows a, b and c, effectively reused.
  • the two-layer curtain coater 1 starts the coating, first, as in FIG Fig. 2 shown, the first drip pan 11 and the second drip tray 21 from the working position ( Fig. 1 ) are brought into the retracted position, and then, as in Fig. 3 1, the first curtain nozzle 10 and the second curtain nozzle 20 from the coating preparation position (FIG. Fig. 1 ) placed in the prank execution position.
  • the first coating material layer C1l is first formed by brushing, and then by applying the material from the first coating material C2c second curtain nozzle 20 flowing second coating slurry curtain C2c on the first coat layer C1l the first coating slip C1 and the second coating slip C2 in two layers one above the other on the surface Ws of the paper web W deleted.
  • the first curtain nozzle 10 and the second curtain nozzle 20 are brought into the coating preparation position where they are apart from each other, the first coating compound curtain C1c is collected from the first curtain nozzle 10 with the first drip pan 11, the second coating mass curtain C2c from the second curtain nozzle 20 is collected with the second drip tray 21 and the first coating composition C1 and the second coating C2 are collected unmixed and separated from each other, the collected first Coating C1 and the collected second coating C2 are reused unchanged, so that a coating mass loss in the coating preparation can be avoided.
  • the first curtain nozzle 10 is fixedly mounted and the second curtain nozzle 20 is freely movable but when the first curtain nozzle 10 and the second curtain nozzle 20 are between the coating preparation position where they are apart from each other. and the carding execution position in which they are connected to each other should be moved freely to each other, can also be moved so that the second curtain nozzle 20 is fixed and the first curtain nozzle 10 is free to move or the first curtain nozzle 10 and the second curtain nozzle 20 free are mobile.
  • the cylinder driving member 4 is used, but as a means moving the first curtain nozzle 10 and the second curtain nozzle 20 to each other, of course, various drive means other than the cylinder may be used Drive element, for example, a ball screw mechanism can be used.

Landscapes

  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Materials For Medical Uses (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP06111144A 2005-06-03 2006-03-15 Zweischicht-Vorhangstreichmaschine Not-in-force EP1728561B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005164242A JP4766660B2 (ja) 2005-06-03 2005-06-03 ２層式カーテンコータ

Publications (2)

Publication Number Publication Date
EP1728561A1 EP1728561A1 (de) 2006-12-06
EP1728561B1 true EP1728561B1 (de) 2009-01-07

Family

ID=36926808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06111144A Not-in-force EP1728561B1 (de) 2005-06-03 2006-03-15 Zweischicht-Vorhangstreichmaschine

Country Status (4)

Country Link
EP (1) EP1728561B1 (ja)
JP (1) JP4766660B2 (ja)
AT (1) ATE419927T1 (ja)
DE (1) DE502006002543D1 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1939007A3 (en) * 2006-12-27 2009-11-18 FUJIFILM Corporation Multi-layer coating method, and planographic printing plate and manufacturing method thereof
DE102007029646A1 (de) * 2007-06-26 2009-01-08 Voith Patent Gmbh Auftragsverfahren sowie Vorhangauftragswerk
WO2013011554A1 (ja) * 2011-07-19 2013-01-24 フォイト パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング タンデム形カーテン塗工機

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE553416A (ja) * 1955-12-17
JPH03186377A (ja) * 1989-12-15 1991-08-14 Fuji Photo Film Co Ltd 塗布装置
JP2767967B2 (ja) * 1990-03-28 1998-06-25 石川島播磨重工業株式会社 カーテンコータ
DE19903559B4 (de) * 1998-01-30 2004-02-26 Mitsubishi Paper Mills Limited Verfahren und Apparatur zur Vorhangbeschichtung
DE10057729A1 (de) * 2000-11-22 2002-05-23 Voith Paper Patent Gmbh Vorhang-Auftragsvorrichtung
DE10320146A1 (de) * 2003-05-06 2004-11-25 Voith Paper Patent Gmbh Mehrschicht-Auftragsvorrichtung zum Auftragen von Auftragsmedium im Wege wenigstens eines mehrschichtigen Vorhangs oder Schleiers
DE10359676A1 (de) * 2003-12-18 2005-07-14 Voith Paper Patent Gmbh Maschine zum einseitigen oder beidseitigen Auftragen eines flüssigen oder pastösen Auftragsmediums auf die Oberfläche einer laufenden Materialbahn und zugehöriges Betriebsverfahren

Also Published As

Publication number Publication date
DE502006002543D1 (de) 2009-02-26
ATE419927T1 (de) 2009-01-15
JP2006334538A (ja) 2006-12-14
EP1728561A1 (de) 2006-12-06
JP4766660B2 (ja) 2011-09-07

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