EP0955408A2 - Procédé et dispositif pour appliquer une enduction sur une base en mouvement - Google Patents

Procédé et dispositif pour appliquer une enduction sur une base en mouvement Download PDF

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Publication number
EP0955408A2
EP0955408A2 EP99105295A EP99105295A EP0955408A2 EP 0955408 A2 EP0955408 A2 EP 0955408A2 EP 99105295 A EP99105295 A EP 99105295A EP 99105295 A EP99105295 A EP 99105295A EP 0955408 A2 EP0955408 A2 EP 0955408A2
Authority
EP
European Patent Office
Prior art keywords
medium
application
atomized
moistening
atomizing device
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.)
Withdrawn
Application number
EP99105295A
Other languages
German (de)
English (en)
Other versions
EP0955408A3 (fr
Inventor
Harald Hess
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
Voith Sulzer Papiertechnik 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, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0955408A2 publication Critical patent/EP0955408A2/fr
Publication of EP0955408A3 publication Critical patent/EP0955408A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • D21H23/50—Spraying or projecting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/18—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area using fluids, e.g. gas streams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/14—Plant for applying liquids or other fluent materials to objects specially adapted for coating continuously moving elongated bodies, e.g. wires, strips, pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
    • 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
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B05D3/0486—Operating the coating or treatment in a controlled atmosphere

Definitions

  • the invention relates to a method for applying an application medium by means of an atomizing device to a running surface, the running surface being the surface of a material web, in particular made of paper or cardboard when applied directly, and the surface of a transfer element from which the application medium is then applied indirectly is transferred to the material web.
  • Such devices are known in the prior art, for example from EP 0 670 004 B1, WO 94/11116 and EP 0 435 904 B1.
  • the aim of such atomization application processes is to apply the application medium to the running surface with the smallest possible excess, in the best case even completely without excess (1: 1 application).
  • the application medium is atomized using air and guided to the running surface. After it has settled there, the guide air is sucked out of the application area again via channels surrounding the atomizing device. Even with low application weights, very large amounts of air have to be led to the surface and extracted from it again per unit of time. It has therefore been shown in practice that the known application methods can only achieve an order result that is unsatisfactory in terms of quality.
  • the subsequent smoothing of the applied layer it has an uneven structure and a rough, sandpaper-like surface.
  • an application method of the type mentioned at the outset in which an atmosphere is maintained in the area of the atomizing device from a medium which rewet or / and moisten the atomized application medium.
  • the vapor of a liquid can also be used as the rewetting or / and moistening medium, which also serves as a carrier liquid for application medium which is liquid or pasty before atomization, for example water vapor, toluene vapor or the like.
  • water vapor as the rewetting or / and wetting medium will always be referred to for the sake of facilitating the discussion. However, this does not limit the scope of protection of the method according to the invention to the use of water vapor.
  • the atomized application medium moves in an atmosphere from the atomizer device to the running surface, which reduces, if not completely, an excessive escape of moisture from the application medium droplets or particles and thus a drying out of at least the surface of these droplets or particles prevented.
  • the droplets or particles which are more liquid as a result can flow more easily after impacting the running surface, which enables a smoother surface to be obtained from the layer applied to the surface.
  • the steam atmosphere does not need to be sucked out of the application area again, but it is only necessary to compensate for steam losses, for example as a result of steam being deposited as moisture on the running surface or the application layer, by supplying fresh steam.
  • turbulence such as occurs in the prior art due to the air supply and air extraction, can be largely avoided in the application area, which has a favorable effect on the uniformity of the layer application.
  • the above-mentioned precipitation of steam as moisture on the application layer has no adverse effects, since the water in the application layer is already present as the carrier liquid of the application medium. On the contrary, the precipitation of moisture improves the flowability of the application medium in the application layer and thus allows a smoother surface to be achieved.
  • the above also applies to any other carrier liquid and its vapor common in application media, for example toluene and toluene vapor.
  • drying is understood to mean the escape of carrier liquid from the application medium in gaseous form and the term “rewetting” means the supply of carrier liquid from the steam atmosphere into the application medium droplets or particles.
  • rewetting means the supply of carrier liquid from the steam atmosphere into the application medium droplets or particles.
  • the vapor atmosphere provided in the area of the atomizer device is such that a balance between drying and rewetting is established for the atomized application medium.
  • dry, powdery application media can also be processed with the method according to the invention, in which case the steam condenses on the application medium particles on their way from the atomizer device to the running substrate and these thus moistened so that they can flow onto the substrate after impact and form a smooth application layer.
  • the atomizing device be arranged in a chamber into which the rewetting or / and moistening medium is introduced by means of a supply device provided for this purpose.
  • the atomizer device can be, for example, a single-substance atomizer device. However, it is also possible to use a two-substance atomizer device in the process according to the invention, which atomizes the application medium by means of steam.
  • the steam used for atomization can be used, for example, solely to form the steam atmosphere in the area of the atomizer device. However, it is also possible to introduce additional steam into the area of the atomizer device.
  • a rotary atomizer device can be used as the atomizer device, in which the application medium is atomized by a rapidly rotating atomizer element under the influence of centrifugal forces acting on it.
  • the application medium atomized in this way can, for example, be guided to the running surface by means of the steam.
  • an annular slot-like steam outlet opening can be provided around the rotating atomizer element, from which the steam emerges in the form of a cone of a predetermined opening angle.
  • An annular arrangement of several separate steam outlet openings can also be considered.
  • electrostatic forces can also be used to guide the atomized application medium to the surface.
  • the rotary atomizing device and in particular its rotating atomizing element can be placed at a predetermined electrical potential, so that the atomized application medium droplets or particles leave the atomizing device in an electrically charged state and the ground or an element assigned to the ground is connected to ground potential , so that an attractive force is exerted on the charged droplets or particles.
  • a device can be provided in the direction of travel of the subsurface in front of the application area, which removes an air boundary layer carried by the running subsurface from the subsurface using steam. This makes it easier to cover the entire surface of the running substrate with application medium, which in turn has an advantageous effect on the application quality, in particular the covering quality of the applied application layer.
  • the invention relates to a device for applying an application medium by means of an atomizing device to a running surface.
  • a device for applying an application medium by means of an atomizing device to a running surface With regard to the structural details, design variants and the advantages which can be achieved with this device, reference is made to the above discussion of the application method according to the invention.
  • An application device is generally designated 10 in FIG. 1.
  • the application device 10 is used to apply an application medium 12 to the surface 14a of a material web 14 which is guided around a support roller 16 in the area of the application device 10.
  • the material web 14 runs past the application device 10 as a result of a rotation of the support roller 16 in the direction of the arrow L.
  • the application device 10 comprises a spray nozzle 18 which dispenses the application medium 12 in atomized form, i.e. as droplets or particles 12a, applied to the material web 14.
  • the droplets or particles 12a impinging on the material web surface 14a flow there and form an application layer 20 on the material web surface 14a.
  • the spray nozzle 18 is arranged in a chamber 22, which is enclosed by a housing 24.
  • the housing 24 is designed to be open toward the support roller 16 and is arranged at such a small distance from it that the material web 14 can enter the region B of the chamber 22 without contact and can also exit from this region B together with the application layer 20 without contact. but that at the same time it is ensured that the atmosphere prevailing in the chamber 22 cannot easily escape from this chamber 22.
  • Water vapor 28 is introduced into the chamber 22 via a feed line 26, which is indicated by the arrow Z in FIG. 1.
  • This water vapor has the task of creating a moist atmosphere in the chamber 22, which prevents the droplets or particles 12a from drying out on their way from the spray nozzle 18 to the material web 14. In this way, a desired low viscosity of the application medium 12 to form the application layer 20 is maintained, so that the droplets or particles 12a pour well after their impact on the material web surface 14a and can thus form an application layer 20 with a smooth surface.
  • part of the water vapor 28 will deposit on the material web 14 or the application layer 20 and thereby further support the flow of the application medium 12.
  • the application medium can be used with the spray nozzle 18 12 are applied to the material web 14 without or essentially without excess (1: 1 application), so that in the running direction L after the application device 10 only an equalization, but not a metering, of the application layer 20 has to take place.
  • the application medium 12 is fed to the spray nozzle 18 via a feed line which adjoins the longitudinal ends of the spray nozzle 18 located in the transverse direction Q of the arrangement in front of or behind the plane of the drawing.
  • the housing 24 has at its lower end an outlet line 30, via which application medium 12, which has inadvertently not reached the material web 14 and has deposited on the walls of the housing 24, can be discharged from the chamber 22 (direction of arrow A ).
  • the spray nozzle 18 is a single-substance spray nozzle which is known per se from the prior art and which atomizes the application medium, for example using ultrasound.
  • FIG. 2 shows a further embodiment variant of the application device according to the invention, the function of which essentially corresponds to the embodiment according to FIG. 1. Therefore, in FIG. 2, analog parts are provided with the same reference numerals as in FIG. 1, but increased by the number 100.
  • the embodiment according to FIG. 2 will only be described in the following to the extent that it differs from the embodiment according to FIG. 1, the description of which is hereby expressly otherwise referred to.
  • the main difference between the application device 110 according to FIG. 2 and the application device 10 according to FIG. 1 is that, instead of a single-substance spray nozzle 18, a two-substance spray nozzle 118 is used to spray the application medium 112.
  • the application medium 112 exits at an outlet opening 118a of the spray nozzle 118 and is discharged from there the water vapor 128 supplied via the feed line 126 is detected, atomized and directed to the surface 114a of the material web 116 guided around the roller 116, where it is deposited as an application layer 120.
  • the maintenance of the moisture in the atomized application medium droplets or particles 112a by the atomization medium, i.e. the steam 128, is ensured without the spray nozzle 118, as in the embodiment according to FIG. 1, being enclosed by a steam box corresponding to the housing 24.
  • a steam box can also be provided in the application device 110 according to FIG. 2, in particular to achieve a certain moistening of the material web 114 and the application layer 120.
  • a steam blower 132 is provided in the embodiment according to FIG. 2 in the running direction L in front of the spray nozzle 118, which counteracts the direction of rotation L of the roller 116 at an acute angle the surface 114a of the material web 114 is turned on, ie like a stabbing blade.
  • the steam blower 132 emits a steam jet 134 which "scrapes" an air boundary layer 136 carried by the material web surface 114a from the material web surface 114a, which could otherwise hinder the coating of the material web 114 with application medium 112.
  • a steam blower can also be provided in the embodiment according to FIG. 1.
  • spray nozzle 118 according to FIG. 2 is shown roughly schematically as a two-component spray nozzle working according to the external mixing principle, two-component spray nozzles operating according to the internal mixing principle can also be used according to the invention.
  • FIG. 3 shows a further embodiment of the application device according to the invention, which essentially corresponds to the embodiment according to FIG. 2. Therefore, the same reference numerals are used in Fig. 3 for analog parts as in Fig. 2, but increased by the number 100, i.e. in comparison with FIG. 1 increased by the number 200. In addition, the embodiment according to FIG. 3 will be described in the following only insofar as it differs from the embodiment according to FIG.
  • a rotary atomizer nozzle 218 is used to coat the surface 214a of the material web 214 which is guided around the roller 216 instead of a two-substance spray nozzle working with steam atomization.
  • the rotary atomizer nozzle 218 includes an atomizer disc 240 which is rotatably driven by a motor 242 at high speeds.
  • Application medium 212 is fed to the rotating atomizer element 240 via a supply line 244, which centrifuges it radially outward under the influence of the centrifugal forces that occur and atomizes it in the process.
  • the application medium droplets 212a After the application medium droplets 212a have left the atomizer element 240, they are caught by a steam jet 228 which is ejected in a ring shape around the atomizer element 240 and deflected towards the material web surface 214a, where they are deposited as an application layer 220.
  • the deflection of the radially thrown droplets or particles 212a can also be accomplished with the aid of electrostatic forces. This is indicated in FIG. 3 in that the atomizing nozzle 218 is connected to a high-voltage source via a connection 246, while the roller 216 is connected to ground potential. As a result, the droplets or particles 212a can be electrically charged during the atomization and pulled from the potential difference between the nozzle 218 and the roller 216 to the material web surface 214a. With regard to avoiding the droplets from drying out 212a or its rewetting should be referred in full to the relevant comments on the embodiment according to FIG. 2.
  • the atomizing nozzle 218 according to FIG. 3 can be arranged in a steam box analogous to FIG. 1.
  • the fact that the application medium according to the invention is conducted to the material web in a rewetting and / or moistening atmosphere and thereby maintains its high flowability has the further advantage of reducing the risk of application medium baking on the nozzle outlet opening and the chamber walls.
  • the device according to the invention is therefore characterized by long operating times between two consecutive maintenance and short downtimes for carrying out the maintenance work.
  • solid, powdered application media can also be processed with the application method according to the invention or with the application device according to the invention.
  • the steam has the task of supplying the atomized powder granules and the material web surface with so much moisture that the application medium can flow to the desired extent after hitting the material web.
  • the application medium was applied directly to the material web, it is also conceivable to apply the application medium to the surface of a transfer roller, which then transfers the application layer to the material web.

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  • Application Of Or Painting With Fluid Materials (AREA)
  • Spray Control Apparatus (AREA)
  • Paper (AREA)
EP99105295A 1998-05-07 1999-03-15 Procédé et dispositif pour appliquer une enduction sur une base en mouvement Withdrawn EP0955408A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19820432 1998-05-07
DE19820432A DE19820432A1 (de) 1998-05-07 1998-05-07 Verfahren und Vorrichtung zum Aufbringen eines Auftragsmediums auf einen laufenden Untergrund

Publications (2)

Publication Number Publication Date
EP0955408A2 true EP0955408A2 (fr) 1999-11-10
EP0955408A3 EP0955408A3 (fr) 2000-05-31

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EP99105295A Withdrawn EP0955408A3 (fr) 1998-05-07 1999-03-15 Procédé et dispositif pour appliquer une enduction sur une base en mouvement

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US (3) US6248407B1 (fr)
EP (1) EP0955408A3 (fr)
JP (1) JPH11333341A (fr)
DE (1) DE19820432A1 (fr)

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US6613191B2 (en) 2000-12-07 2003-09-02 Voith Paper Patent Gmbh Pressurized screen and process for removing contaminants from a fibrous paper suspension containing contaminants
DE10228134A1 (de) * 2002-06-24 2004-01-22 Voith Paper Patent Gmbh Maschine zur Herstellung und Behandlung einer Materialbahn mit einer wenigstens ein Kontaktlos-Auftragswerk aufweisenden Auftragseinrichtung
DE102008021541B4 (de) * 2007-05-14 2012-08-02 Metso Paper, Inc. Verfahren und Vorrichtung zum Behandeln einer Faserbahn
EP2772584A1 (fr) * 2013-02-27 2014-09-03 Valmet Technologies, Inc. Procédé et agencement pour une ligne de production de bande de fibre
EP3097225A4 (fr) * 2014-01-21 2017-04-12 AstenJohnson, Inc. Dispositif à joint étanche à l'air pour appareil de pulvérisation dans une machine à papier
US20230151545A1 (en) * 2020-04-15 2023-05-18 Stora Enso Oyj Multilayer film comprising highly refined cellulose fibers

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DE19960748A1 (de) * 1999-12-16 2001-06-21 Voith Paper Patent Gmbh Auftragsvorrichtung
FI117874B (fi) * 2000-01-28 2007-03-30 M Real Oyj Menetelmä paperiradan päällystämiseksi sekä päällystyskoostumus
CA2405457A1 (fr) * 2000-04-05 2001-10-18 Peter Nielsen Appareil destine au traitement de surfaces et procede d'utilisation associe
US6669993B2 (en) * 2000-09-19 2003-12-30 Honeywell International Inc. High speed yarn finish application
DE10048488A1 (de) * 2000-09-29 2002-04-25 Siemens Ag Einrichtung der Kühlung einer Fläche, die um eine Drehachse rotiert und der Drehachse zugekehrt ist
US20020192360A1 (en) * 2001-04-24 2002-12-19 3M Innovative Properties Company Electrostatic spray coating apparatus and method
JP2002235272A (ja) * 2001-02-02 2002-08-23 Tsudakoma Corp 経糸糊付け機
FI109044B (fi) * 2001-03-13 2002-05-15 Metso Paper Inc Menetelmä paperin tai kartongin päällystämiseksi ja päällystetty paperi
JP4638096B2 (ja) * 2001-09-21 2011-02-23 積水化成品工業株式会社 長尺シートの塗布装置
FI115408B (fi) * 2002-01-31 2005-04-29 Ciba Sc Holding Ag Menetelmä paperi- tai kartonkirainan päällystämiseksi, menetelmän käyttö ja päällystyspasta
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DE10242010A1 (de) * 2002-09-11 2004-03-25 Voith Paper Patent Gmbh Vorrichtung und Verfahren zum Medienauftrag auf einen sich bewegenden Untergrund
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FI121674B (fi) * 2003-01-09 2011-02-28 Metso Paper Inc Menetelmä ja sovitelma liikkuvan paperi- tai kartonkirainan kostuttamiseksi
DE50303937D1 (de) * 2003-01-31 2006-08-03 Hauni Maschinenbau Ag Verfahren zum Beleimen einer bewegten Bahn, sowie Vorrichtung, insbesondere zur Durchführung des Verfahrens
DE20306938U1 (de) 2003-05-06 2003-06-26 Voith Paper Patent GmbH, 89522 Heidenheim Vorrichtung zum direkten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
FI6176U1 (fi) * 2003-10-28 2004-03-25 Metso Paper Inc Spraypäällystysyksikkö
SE526978C2 (sv) * 2004-04-20 2005-11-29 Metso Paper Karlstad Ab Skyddsanordning för sprayutrustning och sätt att skydda denna och dess omgivning
WO2007003059A1 (fr) * 2005-07-04 2007-01-11 H. U. Jakob Papiertechnik Ag Dispositif de pulverisation a grande vitesse de differents agents
WO2007112095A2 (fr) * 2006-03-23 2007-10-04 The Procter & Gamble Company Appareil et procédé de nettoyage de surfaces de réaction
US20090226598A1 (en) * 2008-02-11 2009-09-10 Boston Scientific Scimed, Inc. Substrate Coating Apparatus Having a Solvent Vapor Emitter
DE102008000843A1 (de) 2008-03-27 2009-10-01 Voith Patent Gmbh Einrichtung zum Auftragen von mittels Gas zerstäubter Flüssigkeit
DE102008023924A1 (de) 2008-05-16 2009-11-19 Voith Patent Gmbh Verfahren und Vorrichtung zum Befeuchten einer Faserstoffbahn
DE102008050392A1 (de) * 2008-06-18 2009-12-24 Sms Siemag Aktiengesellschaft Verfahren und Vorrichtung zum Schmieren von Walzen und eines Walzbandes eines Walzgerüsts
US9186881B2 (en) * 2009-03-09 2015-11-17 Illinois Tool Works Inc. Thermally isolated liquid supply for web moistening
DE102010029815A1 (de) 2010-06-08 2011-12-08 Voith Patent Gmbh Verfahren und Vorrichtung zum ein- oder beidseitigen Auftragen eines flüssigen oder pastösen Auftragsmediums in Form wenigstens eines Sprühstrahles
US8985051B2 (en) * 2011-12-15 2015-03-24 Honeywell Asca Inc. Apparatus for producing a spray of changed droplets of aqueous liquid
ITTO20120981A1 (it) * 2012-11-13 2014-05-14 Itt Italia Srl Metodo ed impianto per la verniciatura a polvere di elementi elettricamente non conduttivi, in particolare pastiglie freno
US10815359B2 (en) 2015-11-06 2020-10-27 Arlanxeo Deutschland Gmbh Nanocomposite comprising a layer silicate and a rubber
SE540051C2 (en) * 2016-12-08 2018-03-06 Valmet Oy A device for spraying a coating chemical onto a moving surface of a papermaking machine
CN119608471B (zh) * 2025-02-11 2025-06-06 江苏大使同丰涂料有限公司 涂料生产设备用自动化涂覆装置及方法

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US6503325B1 (en) 2003-01-07
US6248407B1 (en) 2001-06-19
US20010048976A1 (en) 2001-12-06
DE19820432A1 (de) 1999-11-11
JPH11333341A (ja) 1999-12-07
EP0955408A3 (fr) 2000-05-31

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