EP1391554A2 - Dispositif d'enduction - Google Patents

Dispositif d'enduction Download PDF

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Publication number
EP1391554A2
EP1391554A2 EP03102517A EP03102517A EP1391554A2 EP 1391554 A2 EP1391554 A2 EP 1391554A2 EP 03102517 A EP03102517 A EP 03102517A EP 03102517 A EP03102517 A EP 03102517A EP 1391554 A2 EP1391554 A2 EP 1391554A2
Authority
EP
European Patent Office
Prior art keywords
unit
application
application unit
protective
work according
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Withdrawn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
EP03102517A
Other languages
German (de)
English (en)
Other versions
EP1391554A3 (fr
Inventor
Ingo Becker
Werner Buttschardt
Horst Kaipf
Klaus Meier
Manfred Ueberschär
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1391554A2 publication Critical patent/EP1391554A2/fr
Publication of EP1391554A3 publication Critical patent/EP1391554A3/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Withdrawn legal-status Critical Current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
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B05B15/555—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids discharged by cleaning nozzles
    • 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
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0283—Flat jet coaters, i.e. apparatus in which the liquid or other fluent material is projected from the outlet as a cohesive flat jet in direction of the work

Definitions

  • the invention relates to a commission for direct or indirect application of a liquid or pasty medium, such as coating color, on a running Fibrous web, in particular made of paper or cardboard with an application unit which is the application medium for direct application to the running fibrous web and, in the case of an indirect order, delivers it to a current order area that contains the medium subsequently transfers to the fibrous web, with at least one near the Application unit arranged protective device to protect against the current Elements and in front of medium splashing into the environment and with at least one Cleaning device for the application work.
  • a liquid or pasty medium such as coating color
  • Pigment paint dispersed in liquid serves as the application medium (Coating color), strength or the like. Above all, the later one Printability of the paper or cardboard can be enabled or improved.
  • protective devices for this reason and to protect the operating personnel are in the immediate vicinity protective devices, in particular protective walls arranged that are just large enough so that the operator can see the Coating process is still given, but the sprays into the environment prevented, at least minimized.
  • additional cleaning devices are installed on the application which all those components covered with application medium or other contaminants within the scope of cyclical service times or after other downtimes of the Machine, such as web break or at the end of a Coating process, can be cleaned.
  • the cleaning of the application unit, in particular its application chamber, its application nozzles, drain surfaces and the like is particularly important, to ensure functionality.
  • the object of the invention is achieved in that the protective device and the cleaning device form a common structural unit. This has the advantage that fewer components, less installation space and less operating effort are required. In addition, danger points are reduced due to the fewer components. It is also advantageous that separate drives are no longer necessary for the protective device and also for the cleaning device for swiveling in and out or adjusting. Automated operation of the unit is particularly useful.
  • the cleaning device and the protective device can be pivoted about an axis with which it can be brought into the desired relative positions with respect to the application unit. At least two positions, namely a protective or operating position and a service or cleaning position, are intended. These positions can also be reached by translatory movement of the assembly.
  • the axis pivotable and / or translationally movable unit in the direction of Seen fibrous web, is arranged in front of the application unit.
  • Another expedient solution of the invention is that the Cleaning device at the end facing away from the pivot axis Protective device is arranged. This means that the cleaning device is sufficient particularly close to the application unit, which makes the cleaning effect improved and the cleaning effort can be reduced.
  • the unit i.e. protection and cleaning device, can cover the entire Length of the application work (i.e. across the machine width) or over the Be of sufficient length for the order.
  • the unit can also be shorter and in this case only one or both of them Edge areas on the driver and / or drive side of the machine can be assigned.
  • the protective device can be used as a closed protective wall or as a protective grille be trained.
  • the with a supply line for the cleaning medium (preferably water) in Related cleaning device can be at least as long Tube be formed. Individual nozzles are preferably integrated into this tube.
  • the nozzles are able to jet liquid, in particular High pressure water jets, to which cleaning agents and / or solvents are also added can be on the areas of the order to be cleaned or the To direct order units.
  • the application unit 1 comprises a running fibrous web 2, which in the example includes an application unit 3 designed as a free jet nozzle can be coated directly should.
  • Lane 2 the direction of which is indicated by arrow L, is supported by one Roller 4.
  • the application unit 3 is adapted to the width of the web 2 to be provided with the application medium M and, in its working position, which is shown in FIG. 1 , delivers the application medium M to the web 2 in a free and unsupported jet S flying through the ambient atmosphere.
  • the medium M would be applied to the surface of an application surface, for example a circulating belt, or to the roller 4, from where it would then be transferred to the web 2.
  • a doctor device 5 is arranged. As can be seen in FIG. 1 , this is provided in order to scrape the applied layer of application medium M onto a desired coat weight or it is used only for the purpose of uniformity.
  • This assembly 7 consists of a protective device 7a in the form of a Protective wall, a protective grille or similar structure and one Cleaning device 7b.
  • the cleaning device 7b is tubular and is designed with a plurality of nozzles 7c, from which liquid (preferably recirculated water) fed via a line 8, optionally with the addition of cleaning agents and / or solvents, emerges in each case high pressure jets 7d. These jets can be emitted in a targeted manner onto the areas to be cleaned.
  • the nozzles 7c can be arranged to be movable and / or adjustable. As a result, the beams 7d can be varied with regard to their direction or their quantity.
  • the structural unit 7 together with the protective wall 7a and the cleaning pipe 7b need only be moved with a single drive A arranged on the drive side of the machine.
  • the structural unit 7 can be adjusted in translation or - as shown in FIGS. 1 and 2 - can be pivoted about a common axis 7f in order to be able to set it in any relative positions to the application unit 3. Three of these positions of the unit 7 are each illustrated in FIG. 2 with a dash-dotted, dashed and solid line.
  • FIG. 1 shows the position which is set during the coating operation. This position also corresponds to the dash-dotted line in FIG . 2 .
  • the illustration of drive A and line 8 has been omitted here for reasons of clarity.
  • the protective wall 7a protects the environment from spraying application medium M. Sie but also protects the operating personnel from moving components, especially on the Operator side of the machine.
  • the positions (dashed and solid lines) of the structural unit 7 shown in FIG. 2 point exactly in the direction of the application unit 3 pivoted into the service position.
  • the nozzles 7c of the cleaning device 7b are set such that the supply gap 3b which is opened with the nozzle lip 3a is that in the example free jet nozzle 3 shown, can be acted upon with cleaning liquid jets 7d.
  • the cleaning liquid should hit the components to be cleaned under high pressure, because it is easier to remove stuck particles.
  • the protective wall 7a also protects the operating personnel from these high-pressure cleaning jets.
  • Positions can preferably be at the end of the coating process for example, the roller 4 or other parts of the application unit 1 getting cleaned.
  • the adjustment of the structural unit 7 and the actuation of the cleaning device 7b can take place either automatically or by hand. Automated operation saves the operating and maintenance personnel time for opening and / or removing the protective device. This saved time can then be used for cleaning, which can also prevent the application medium from drying out. This in turn makes cleaning easier and saves time and, above all, quicker recommissioning. Particularly in the case of an online coating system, the running efficiency of the machine producing or finishing the fibrous web can be significantly improved.
  • the unit 7 of the invention Commissioned work 1 not only in connection with the illustrated Free jet nozzles - applicator 3, also with other known ones Application units or units (application unit with nozzle chamber; curtain nozzle; Single application nozzles; Roller applicator, etc.) can be used.
EP03102517A 2002-08-23 2003-08-13 Dispositif d'enduction Withdrawn EP1391554A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10238728A DE10238728A1 (de) 2002-08-23 2002-08-23 Auftragswerk
DE10238728 2002-08-23

Publications (2)

Publication Number Publication Date
EP1391554A2 true EP1391554A2 (fr) 2004-02-25
EP1391554A3 EP1391554A3 (fr) 2004-06-09

Family

ID=30775536

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03102517A Withdrawn EP1391554A3 (fr) 2002-08-23 2003-08-13 Dispositif d'enduction

Country Status (2)

Country Link
EP (1) EP1391554A3 (fr)
DE (1) DE10238728A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1580318A1 (fr) * 2004-03-20 2005-09-28 Voith Paper Patent GmbH Dispositif de protection
EP1972442A1 (fr) * 2007-03-21 2008-09-24 technotrans AG Procédé et dispositif de nettoyage de buses sur un dispositif d'humidification à pulvérisation
AT517386A3 (de) * 2015-06-22 2017-07-15 Valmet Technologies Oy System zur Instandsetzung oder zum Auswechseln eines Teils oder einer Komponente einer Faserbahnherstellungslinie und Verfahren zur Instandsetzung oder zum Auswechseln eines Teils oder einer Komponente einer Faserbahnherstellungslinie

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007055891A1 (de) 2007-12-20 2009-06-25 Voith Patent Gmbh Auftragsvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19518132C1 (de) * 1995-05-17 1997-02-06 Voith Sulzer Papiermasch Gmbh Verfahren und Auftragswerk zum Auftragen von flüssigem oder pastösem Medium auf eine laufende Materialbahn
DE19801140A1 (de) * 1998-01-14 1999-07-15 Voith Sulzer Papiertech Patent Vorrichtung zum direkten oder indirekten Auftrag eines flüssigen bis pastösen Auftragsmediums auf eine laufende Materialbahn sowie Betriebsverfahren für eine solche Vorrichtung
DE19814491A1 (de) * 1998-04-01 1999-10-07 Voith Sulzer Papiertech Patent Verfahren und Vorrichtung zur Vermeidung oder Beseitigung von Verstopfungen im Dosierspalt eines Düsenauftragswerks
US6187142B1 (en) * 1997-10-24 2001-02-13 Voith Sulzer Papiertechnik Patent Gmbh Process and device for acting on a paper or cardboard web with one of a fluid and pasty coating medium

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4929130A (en) * 1989-06-28 1990-05-29 United Technologies Corporation Grinding wheel guard apparatus
DE10017912A1 (de) * 2000-04-11 2001-10-18 Voith Paper Patent Gmbh Verfahren zur Reinigung von Rakelstäben

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19518132C1 (de) * 1995-05-17 1997-02-06 Voith Sulzer Papiermasch Gmbh Verfahren und Auftragswerk zum Auftragen von flüssigem oder pastösem Medium auf eine laufende Materialbahn
US6187142B1 (en) * 1997-10-24 2001-02-13 Voith Sulzer Papiertechnik Patent Gmbh Process and device for acting on a paper or cardboard web with one of a fluid and pasty coating medium
DE19801140A1 (de) * 1998-01-14 1999-07-15 Voith Sulzer Papiertech Patent Vorrichtung zum direkten oder indirekten Auftrag eines flüssigen bis pastösen Auftragsmediums auf eine laufende Materialbahn sowie Betriebsverfahren für eine solche Vorrichtung
DE19814491A1 (de) * 1998-04-01 1999-10-07 Voith Sulzer Papiertech Patent Verfahren und Vorrichtung zur Vermeidung oder Beseitigung von Verstopfungen im Dosierspalt eines Düsenauftragswerks

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1580318A1 (fr) * 2004-03-20 2005-09-28 Voith Paper Patent GmbH Dispositif de protection
EP1972442A1 (fr) * 2007-03-21 2008-09-24 technotrans AG Procédé et dispositif de nettoyage de buses sur un dispositif d'humidification à pulvérisation
US8001889B2 (en) 2007-03-21 2011-08-23 Technotrans Ag Procedure and device for preventing contamination of the nozzles of a spray dampening unit
AT517386A3 (de) * 2015-06-22 2017-07-15 Valmet Technologies Oy System zur Instandsetzung oder zum Auswechseln eines Teils oder einer Komponente einer Faserbahnherstellungslinie und Verfahren zur Instandsetzung oder zum Auswechseln eines Teils oder einer Komponente einer Faserbahnherstellungslinie
AT517386B1 (de) * 2015-06-22 2018-04-15 Valmet Technologies Oy System zur Instandsetzung oder zum Auswechseln eines Teils oder einer Komponente einer Faserbahnherstellungslinie und Verfahren zur Instandsetzung oder zum Auswechseln eines Teils oder einer Komponente einer Faserbahnherstellungslinie

Also Published As

Publication number Publication date
EP1391554A3 (fr) 2004-06-09
DE10238728A1 (de) 2004-03-04

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