WO2010069776A1 - Unité d’application de rideau - Google Patents

Unité d’application de rideau Download PDF

Info

Publication number
WO2010069776A1
WO2010069776A1 PCT/EP2009/066307 EP2009066307W WO2010069776A1 WO 2010069776 A1 WO2010069776 A1 WO 2010069776A1 EP 2009066307 W EP2009066307 W EP 2009066307W WO 2010069776 A1 WO2010069776 A1 WO 2010069776A1
Authority
WO
WIPO (PCT)
Prior art keywords
curtain
lip
sliding surface
curtain applicator
fibrous web
Prior art date
Application number
PCT/EP2009/066307
Other languages
German (de)
English (en)
Inventor
Benjamin Méndez-Gallon
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
Priority to JP2011600048U priority Critical patent/JP3173226U/ja
Priority to CN200990100613.5U priority patent/CN202427600U/zh
Priority to EP09763964A priority patent/EP2379230A1/fr
Publication of WO2010069776A1 publication Critical patent/WO2010069776A1/fr

Links

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
    • B05C5/007—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
    • 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
    • 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
    • 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
    • D21H23/30—Pretreatment of the paper

Definitions

  • the invention relates to a curtain applicator for coating a running paper, cardboard or other fibrous web having at least one liquid to pasty application medium
  • a curtain applicator for coating a running paper, cardboard or other fibrous web having at least one liquid to pasty application medium comprising a disposed above the fibrous web curtain applicator head whose width is at least equal to the width of the fibrous web and at least one application medium chamber with each a feed gap branching from the application medium chamber, which merges into an exit slit nozzle for the respective application medium to be dispensed and the curtain applicator head has on its surface a sliding surface extending from the at least one exit slit nozzle or from the uppermost exit slit nozzle to a spoiler edge; from the respective application medium in the form of a single- or multi-layer curtain essentially following gravity falls on the fibrous web and there generates a single- or multi-layer coating layer, as well as isend an adjustable catcher, in particular drip tray for collecting the single or multilayer curtain in a start
  • a generic device is known for example from WO 03/049871.
  • an application head is disclosed, with which a plurality of application media or multiple layers of a coating medium can be dispensed.
  • This embodiment of a curtain applicator is known inter alia also from EP-AI - 1 255 615 and is referred to in professional circles as "Slide Die", ie Gleit harshdüse.
  • This so-called Gleit harshdüse which is also referred to as a cascade nozzle, contains at least one, but also up to eleven application medium chambers from which the medium passes via a feed gap, which in turn merges into a slot-shaped outlet nozzle on a sliding surface of the Gleit Mrsdüse.
  • the application medium emerging from the discharge nozzles or discharge slots arranged in parallel one behind the other is laid one above the other on the sliding surface provided on the surface of the discharge head.
  • this film layer or multilayer film dissolves and falls as single or multilayer curtain down either initially on an intermediate guide plate or directly on the substrate to be coated or the surface of the moving fibrous web.
  • a collecting device for the already or still falling curtain or the flowing application medium is necessary so that the fibrous web and the environment is not contaminated with these order media parts.
  • This trained as a trough or gutter applicator is adjustable and requires this drive means.
  • this catcher is shifted so that the curtain can then freely reach the fibrous web.
  • the two curtain edges are each fixed by special side guides. In so-called “inboard” mode (the curtain is narrower than the web width), the distance between the two side guides is also smaller than the width of the fibrous web. The required trough for starting and stopping or interrupting the coating process must therefore be even narrower than the said distance between the edge guides. In “overboard” driving (where the curtain is dispensed beyond the web edges), the distance between the edge guides or side guides is greater than the web width.
  • the start-stop process by means of catcher is particularly difficult in inboard-style, because the pan used as a catcher must be guided between the edge guide elements.
  • a change in the other driving style ie of inboard in overboard driving style
  • a disadvantage in the coating phase is an often occurring so-called "teapot effect". This leads to the deflection of the curtain from the vertical, which emanates from the tear-off edge. This deflection of the curtain is disadvantageous because the line of impact of the curtain on the fibrous web geometric can not be defined.
  • a curtain coater which, in order to avoid these problems, its, arranged on a frame applicator head rotated about an axis and thus the impact position of the curtain for the Be Mrsungsbetheb or the start-stop phase or for the Intercepted. This is very complex, especially because the entire gun must be realigned again after each adjustment.
  • the curtain application head has a movable lip which, in the direction of flow of the application medium emerging from the at least one exit slit nozzle, is arranged downstream of at least one exit slit nozzle and forms a partial region of the sliding surface up to the spoiler edge.
  • This sub-area is flush or continuous to the rest of the sliding surface of the curtain applicator head, the lip or the portion of the sliding surface over the entire width of the job head is sufficient and is adjustable so that the falling of the spoiler edge curtain either in one Operating position on the fibrous web to be coated or in a start-stop position on the drip tray is directable.
  • An expedient variant of the design of the adjustable lip may consist in that the lip consists of a rotationally symmetrical body and an end branching off in the tangential direction. Both parts, so body and tail are preferably integrally connected to each other smooth. The outer surface of the rotationally symmetrical body and the end piece up to the spoiler lip - A -
  • the part of the sliding surface forming rotationally symmetrical body is precisely received rotatably in a bore of the curtain applicator head and this body including the tail in or counterclockwise in an angular range of at least 110 ° adjustable, or rotatable, depending on which position the trailing edge and thus which impact position the curtain should occupy.
  • the bore and also the rotationally symmetrical body are manufactured with high precision for a perfect functioning.
  • This version allows a particularly sensitive adjustment of the lip.
  • the lip may also be formed like a strip according to another embodiment. In this case, it is received in a rectangular recess of the curtain head and arranged therein extendable and extendable. Depending on whether and how far the extension of the lip occurs, either the setting of the impact point of the curtain for a coating of the fibrous web or a catching of the curtain in the start or stop phase is achieved.
  • the adjustment of the lip can be done in various ways, preferably motor.
  • the impact point of the curtain is easily adjustable, whereby the distance between the delivered single-layered or multi-layered curtain and an upstream air boundary layer removal device can be adjusted and optimized
  • Figure 1 an illustration of a curtain applicator with a curtain applicator head according to the prior art
  • FIG. 2 an illustration of a curtain application head for multi-layer application according to the invention
  • Figure 3 an illustration of a curtain application head for multi-layer application according to the invention in another embodiment
  • FIG. 3a a representation of a curtain application head for multi-layer application according to the invention in a further embodiment
  • FIG. 3b a representation of a curtain application head for multi-layer application according to the invention in a further embodiment
  • Figure 4 a representation of a curtain application head for multi-layer application according to the invention in a further embodiment
  • FIG. 1 is a curtain applicator 1 for coating a running paper, cardboard or other fibrous web 2 according to the prior art in
  • Coating operation denoted by I, shown. It includes one above the
  • the applicator head 3 used here is referred to as a so-called cascade nozzle or sliding layer nozzle body.
  • the application head 3 has for a multi-layer order, ie for each intended Liquid application medium M (up to 11 similar or different application media can be applied) on its own application medium chamber 4 with feed gap 5, all or on the surface of the curtain applicator head 3 each pass into a wide continuous outlet slit nozzle 6.
  • the application head 3 has on its surface also a downwardly inclined and curved located sliding surface 7.
  • the sliding surface 7 merges into a separation or tear-off edge 8 which points downwards. From this tear-off edge 8, which is also machine-wide, as well as the entire applicator head 3, the film layers F1, F2, Fn previously formed on the sliding surface 7 and detached form one another and form or form a free-falling monolayer or multilayer curtain 9 off.
  • the curtain 9 drops from the trailing edge 8 substantially following the gravity, down on the fibrous web 2 and lies down on the surface as a desired single or multiple application layer 10 from.
  • the curtain applicator unit 1 located here in the brushing operation comprises, in addition to some units not shown here, such as measuring devices, supply lines, edge guide elements for the curtain, etc., also an air boundary layer removal device 11 only indicated here for the removal or reduction of the high-speed web 2 entrained Air boundary layers LG and a collecting device in the form of a collecting trough 12 or gutter for already or still falling application medium in the start or stop phase of the coating process.
  • This commissioned work 1 has a rigid geometry of the exit slit nozzle 6 of the sliding surface 7 and the trailing edge 8, which is why a complex adjustment of the entire nozzle body or the applicator head is necessary to achieve a certain impact position P of the single or multilayer curtain 9.
  • FIGS. 2 and 3 embodiments of the application head 3 according to the invention are shown.
  • FIG. 2 shows that the curtain application head 3 has a movable lip 13.
  • This lip is seen in the direction of flow R of emerging from the at least one exit slit nozzle 6
  • Auftagsmediums M downstream of at least one exit slit nozzle and forms a portion 14 of the sliding surface 7 up to the trailing edge 8.
  • This portion 14 closes flush or continuously to the rest of the sliding surface 7 on.
  • the lip 13 or the adjustable portion 14 of the sliding surface 7 extends over the entire width of the applicator head 3 and is adjustable so that the falling of the trailing edge 8 curtain 9, which is double-layered, either in an operating position I, ie in the prank mode the fibrous web 2 to be coated or in a start-stop position II can be directed onto the collecting trough 12.
  • the adjustment of the lip 13 takes place in the clockwise or counterclockwise direction.
  • the lip 13 consists of a rotationally symmetrical body 13.1 and an end piece 13.2 which branches off in the tangential direction and whose outer surface partially forms the partial region 14 of the sliding surface 7 up to the tear-off edge 8.
  • the rotationally symmetrical body 13.1 is rotatably received in a bore 15 of the curtain applicator head 3.
  • the body 13.1, including its end piece 13.2 can be adjusted or rotated in or counter to the clockwise direction in an angular range of up to approximately 110 °.
  • FIG. 3 shows a further embodiment of the movable lip 13, which is designated here by 13.3.
  • the lip 13.3 is designed like a strip in this variant and received in a rectangular recess 16 of the curtain head 3 and therein rectilinear, as the double arrow V shows, retractable and extendable.
  • the start-stop position Il is shown with extended lip 13.3.
  • the drip pan 12 catches the double-layered curtain 9 consisting of the film layers F1 and F2 shown.
  • the curtain reaches the here also not shown Fibrous web.
  • FIG. 3 a shows a modified embodiment compared to FIG. 3.
  • a linear guide body 17 is provided, on which the lip 13 slides.
  • a protective roof 19 is provided, with which the gap 18 is covered from above.
  • the protective roof 19 may be a separate component, as shown here in FIG. 3a.
  • the protective roof 19 can also be formed on the application head 3, as can be seen in FIG. 3b.
  • the protective roof 19 is also in the variant shown in Figure 4 - shown in start / stop position Il and operating position I- present, the adjustable lip 13.3 is pivoted here. It is hinged to a holding body 20 and pivotable by means of an adjusting device 21, for example, lifting cylinder, in a range up to 90 °. This is shown with dashed lines and a curved double arrow.
  • an adjusting device 21 for example, lifting cylinder

Landscapes

  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L’invention concerne une unité d’application de rideau (1) destinée à revêtir une bande de papier, de carton ou d’une autre matière fibreuse (2) d’au moins un milieu d’application fluide à pâteux (M), présentant une tête d’application de rideau (3) agencée au-dessus de la bande de matière fibreuse (2). Selon l’invention, la tête d’application de rideau (3) présente une lèvre mobile (13) qui, vue dans le sens d’écoulement (R) du milieu d’application (M) sortant d’au moins une buse à fente de sortie (6), est agencée en aval de ladite buse à fente de sortie (6) et forme une zone partielle (14) de la surface de glissement (7) jusqu’au bord de décollement (8). Cette zone partielle (14) est reliée à l’autre surface de glissement (7), au même niveau ou sans palier, et la lèvre (13) ou la zone partielle (14) de la surface de glissement (7) s’étend sur toute la largeur de la tête d’application (3) et est mobile de telle sorte que le rideau (9) tombant du bord de décollement (8) puisse être orienté soit dans une position de fonctionnement (I) sur la bande de matière fibreuse (2) à revêtir soit dans une position marche-arrêt (II) sur la cuve collectrice (12).
PCT/EP2009/066307 2008-12-18 2009-12-03 Unité d’application de rideau WO2010069776A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2011600048U JP3173226U (ja) 2008-12-18 2009-12-03 カーテン塗工装置
CN200990100613.5U CN202427600U (zh) 2008-12-18 2009-12-03 帘式涂布装置
EP09763964A EP2379230A1 (fr) 2008-12-18 2009-12-03 Unité d application de rideau

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810054901 DE102008054901A1 (de) 2008-12-18 2008-12-18 Vorhangauftragswerk
DE102008054901.0 2008-12-18

Publications (1)

Publication Number Publication Date
WO2010069776A1 true WO2010069776A1 (fr) 2010-06-24

Family

ID=41650356

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/066307 WO2010069776A1 (fr) 2008-12-18 2009-12-03 Unité d’application de rideau

Country Status (5)

Country Link
EP (1) EP2379230A1 (fr)
JP (1) JP3173226U (fr)
CN (1) CN202427600U (fr)
DE (1) DE102008054901A1 (fr)
WO (1) WO2010069776A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010041716A1 (de) * 2010-09-30 2012-04-05 Voith Patent Gmbh Vorrichtung zum direkten oder indirekten Auftrag von flüssigem bis pastösem Auftragsmedium und Verfahren zum Betreiben einer derartigen Vorrichtung
DE102010042560A1 (de) * 2010-10-18 2012-04-19 Voith Patent Gmbh Verfahren zum Betreiben einer Auftragsvorrichtung zum Auftragen flüssiger bis pastöser Auftragsmedien in Form zumindest eines frei fallenden Vorhangs und Auftragsvorrichtung
DE102016209336B4 (de) * 2016-05-30 2021-08-05 Voith Patent Gmbh Vorhangauftragswerk
CN108339712B (zh) * 2018-04-20 2023-12-29 中冶南方工程技术有限公司 一种可自动调节角度的挡液装置及涂层机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2631559A1 (de) * 1976-07-14 1978-01-19 Helvisol Ag Vorrichtung zum beschichten von ebenen oberflaechen mit fluessigen medien
DE10057732A1 (de) * 2000-11-22 2002-05-23 Voith Paper Patent Gmbh Vorhang-Auftragsvorrichtung
WO2006008336A1 (fr) * 2004-07-20 2006-01-26 Metso Paper, Inc. Unite et procede de couchage par voile
DE102005035317A1 (de) * 2005-07-28 2007-02-01 Voith Patent Gmbh Auftragsverfahren
EP1767282A2 (fr) * 2005-09-22 2007-03-28 Voith Patent GmbH Appareillage de couchage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE515824C2 (sv) 2000-01-26 2001-10-15 Tetra Laval Holdings & Finance Förfarande för tillverkning av ett flerskiktat förpackningslaminat genom våtbeläggning, samt laminat tillverkat enligt förfarandet
ATE466664T1 (de) 2001-12-13 2010-05-15 Dow Global Technologies Inc Verfahren und vorrichtung zur vorhangbeschichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2631559A1 (de) * 1976-07-14 1978-01-19 Helvisol Ag Vorrichtung zum beschichten von ebenen oberflaechen mit fluessigen medien
DE10057732A1 (de) * 2000-11-22 2002-05-23 Voith Paper Patent Gmbh Vorhang-Auftragsvorrichtung
WO2006008336A1 (fr) * 2004-07-20 2006-01-26 Metso Paper, Inc. Unite et procede de couchage par voile
DE102005035317A1 (de) * 2005-07-28 2007-02-01 Voith Patent Gmbh Auftragsverfahren
EP1767282A2 (fr) * 2005-09-22 2007-03-28 Voith Patent GmbH Appareillage de couchage

Also Published As

Publication number Publication date
EP2379230A1 (fr) 2011-10-26
JP3173226U (ja) 2012-02-02
CN202427600U (zh) 2012-09-12
DE102008054901A1 (de) 2010-06-24

Similar Documents

Publication Publication Date Title
EP1861207B1 (fr) Dispositif d'application
EP2379230A1 (fr) Unité d application de rideau
EP2146003A2 (fr) Unité d'application de rideau
EP1782891B1 (fr) 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
WO2010091986A1 (fr) Dispositif d'enduction au rideau
DE102005035317A1 (de) Auftragsverfahren
DE102008040405A1 (de) Vorhang-Auftragswerk
EP1749585A2 (fr) Methode d'application d'un revêtement
EP1728561B1 (fr) Appreil de revêtement par rideau à deux couches
DE102006052687A1 (de) Verfahren zum mehrschichtigen Auftragen
EP2596171B1 (fr) Coucheuse rideau
WO2012136635A1 (fr) Tête d'application
EP2198975B1 (fr) Unité d'application de rideau
DE102007000776A1 (de) Auftragsvorrichtung
EP2067531A2 (fr) Guidage de bord
EP2409781B1 (fr) Dispositif de revêtement par rideau
EP2014376A2 (fr) Machine de revêtement par rideau
EP2622135A1 (fr) Dispositif d'application directe ou indirecte d'une substance à appliquer liquide ou pâteuse et procédé de fonctionnement d'un tel dispositif
DE102008040409A1 (de) Vorhang-Auftragswerk
EP2111925A1 (fr) Unité d'application de rideau
DE202011105877U1 (de) Vorrichtung zum Auftragen wenigstens eines chemischen Additivs auf eine laufende mehrlagige Faserstoffbahn
AT506170A2 (de) Anordnung und verfahren zur regulierung der applikationsbreite einer von der ebene eingebenden florstreichmaschine
DE102008042522A1 (de) Vorhangauftragswerk
DE102008054889A1 (de) Vorhang-Auftragswerk
DE102008040407A1 (de) Vorhang-Auftragswerk

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200990100613.5

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09763964

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2009763964

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2011600048

Country of ref document: JP