EP0849396A1 - Dispositif pour l'application directe ou indirecte d'une substance fluide ou pâteuse sur une bande en mouvement, particulièrement de papier ou de carton - Google Patents

Dispositif pour l'application directe ou indirecte d'une substance fluide ou pâteuse sur une bande en mouvement, particulièrement de papier ou de carton Download PDF

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Publication number
EP0849396A1
EP0849396A1 EP97119008A EP97119008A EP0849396A1 EP 0849396 A1 EP0849396 A1 EP 0849396A1 EP 97119008 A EP97119008 A EP 97119008A EP 97119008 A EP97119008 A EP 97119008A EP 0849396 A1 EP0849396 A1 EP 0849396A1
Authority
EP
European Patent Office
Prior art keywords
transfer blade
counter surface
blade
application
application medium
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.)
Granted
Application number
EP97119008A
Other languages
German (de)
English (en)
Other versions
EP0849396B1 (fr
Inventor
Zygmunt Madrzak
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 Sulzer Papiermaschinen 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 Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0849396A1 publication Critical patent/EP0849396A1/fr
Application granted granted Critical
Publication of EP0849396B1 publication Critical patent/EP0849396B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
    • B05C3/18—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material only one side of the work coming into contact with the liquid or other fluent material
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/08—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating from outlets being in, or almost in, contact with the textile material
    • 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
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • 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
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/04—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with blades

Definitions

  • the present invention relates to a commissioned work for direct or indirect application of a liquid or pasty application medium on a running material web, in particular made of paper or cardboard, according to the preamble of claim 1.
  • Coating lines used to make a running web of material for example made of paper, cardboard or a textile material exists, on one or both sides with one or more Layers of the application medium, for example color, thickness, Impregnation liquid or the like.
  • the liquid or pasty application medium directly from an application device applied to the surface of the running material web, during the order on a surrounding support surface, for example an endless belt or a counter roller, will be carried.
  • a counter surface serving as a support surface e.g. the Surface of a counter roll designed as an applicator roll, applied to from there in a nip through which the Material web runs through, from the applicator roller to the Material web to be transferred.
  • That lip of the two forming the metering gap Lips which is on the side of the metering gap, on the with indirect application of the medium, the application roller or when applying the medium directly, the material web on the Application work runs in is referred to as the supply lip.
  • the second lip on the side of the Dosing gap is on which the applicator roller or Material web runs away from the applicator as the outlet side Inscribed lip.
  • this Applicator is at the free end of the lip on the outlet side a doctor element serving as a doctor blade, for example a doctor blade or a doctor blade, which the in Excess application medium applied to a certain Layer thickness or a certain profile doctored.
  • this application joins the output of the dosing gap concave Deflector to the lip on the inlet side, that from the Dosing gap redirecting application medium.
  • this metering device is a separate doctor element downstream that the applied to the counter surface Application medium scraped off.
  • the present invention is therefore based on the object to develop a generic commissioned work such that the disadvantages inherent in the known prior art, in particular the boundary layer phenomena described simple way avoided as much as possible and improved conditions for producing a qualitatively high-quality order can be created.
  • This application for direct or indirect application of a liquid or pasty application medium on a running material web, in particular made of paper or cardboard, includes one of a standby and / or maintenance position in an operating position movable metering device with a formed as a nozzle metering gap between a inlet lip and an outlet lip is formed, as well as a running counter surface opposite the nozzle, to the application medium emerging from the metering gap is to be applied, being at the outlet of the metering gap a transfer blade arranged on the inlet lip for the application medium, their length in relation to the counter surface is selected so that the transfer blade in the Operating position rests on the counter surface and that Application medium along the outlet side of the Transfer blade from the exit of the metering gap to the Counter surface conducts.
  • the transfer blade slides in Operation of the applicator over the running counter surface.
  • the one with a certain contact pressure over the counter surface sliding transfer blade grazes with its inlet side Blade surface in an advantageous manner that of the counter surface entrained air boundary layer and conducts at the same time on their immediately adjacent, outflow side Blade area the application medium from the exit of the metering gap except for the counter surface, which is now free of boundary layers.
  • the influence of negative boundary layer phenomena eliminate effectively.
  • the Color anchoring of the application medium on the counter surface improved because stripping the boundary layer lower than the atmospheric pressure Pressure on the downstream blade tip of the transfer blade builds up so that the application medium to a certain extent from the Transfer blade surface sucked onto the counter surface and at the same time by the ambient pressure on or in the Counter surface is pressed.
  • the Application unit according to the invention is also advantageous for Production of a multi-layer order in the so-called Can be used wet-on-wet. Finally, almost all known nozzle applicators easily and without major ones Effort on the applicator configuration according to the invention be converted.
  • the transfer blade is preferably as elastic deformable transfer blade designed.
  • the over the running counter surface sliding elastic transfer blade assumes an essentially concavely curved shape, with the tip of the transfer blade approximately in the direction of travel the opposite surface, i.e. So in the direction of the application roller or the material web carried on the support surface.
  • the transfer blade at least on its inlet side, that is, the counter surface contacting blade surface with wear protection provided that the service life and dimensional stability of the Transfer blade increased and thus indirectly to one even application on the outflow side Transfer blade surface contributes.
  • a ceramic coating has proven wear protection.
  • the invention is not limited to this Coating fixed.
  • Other suitable ones can also be used Wear protection measures taken on the transfer blade will. For example, the entire transfer blade or Parts of it made of a particularly wear-resistant material be made.
  • the transfer blade in the area of their blade tip assigned to the counter surface one or has several through openings. Through these openings can do this along the outlet side of the transfer blade to the application medium flowing to the counter surface reach an area on the inlet side of the transfer blade and there both pre-wet the counter surface and simultaneously as lubrication for the tip area of the transfer blade to serve.
  • the lubrication function also contributes to one Reduction of wear on the transfer blade.
  • the applicator comprises at least one pressing device for elastic deformation and / or pressing of the transfer blade to the running counter surface.
  • this pressure device can be, for example, one of actuators act on the pressure bar, which is evenly over the essentially the entire machine width or even zones acts differently on the transfer blade and this deformed accordingly and pressed against the counter surface.
  • the Pressing device can, if necessary, normally by moving or adjusting the metering device from a standby and / or maintenance position in one Operating position resulting functions for manipulation take over the transfer blade.
  • FIG. 1 is a schematic cross-sectional view of a Applicator according to the invention in the area of a Dosing device shows, described in more detail and explained.
  • the invention comprises Commissioned work, which in the present case is a commissioned work for indirect application of a liquid or pasty Application medium 2 on a running material web, in particular made of paper or cardboard, one on one is not shown elongated support element held and by a standby and / or maintenance position in one Operating position movable dosing device D with a as a nozzle, i.e. here more precisely trained as a free jet nozzle Dosing gap 4 between an inlet 6 and a drain-side lip 8 that face each other and from each other are arranged movably, is formed. Of the Dosing device D is used as a carrier surface Applicator roller 10 opposite. The direction of rotation of the roller 10 is indicated by an arrow. From the applicator roller 10 the application medium in a nip, not shown, by which the material web runs through onto the material web transfer.
  • a profile bar 12 mounted which a variety of defined, has comb-like or sawtooth-like passage gaps, which together form the passage opening of the metering gap 4 to form.
  • One made from a thin, elastic, straight sheet manufactured elongated transfer blade 14 in the area their blade tip assigned to the counter surface 10 has several Through openings 20 or breakthroughs is detachable between the lip 6 on the inlet side and the profile strip 12 clamped, so that the passage gaps enclosing Side of the profile bar 12 flush with a lower section the transfer blade 14 abuts and the lower blade section the transfer blade surface 14.2 a side wall of the Dosing gap 4 forms.
  • the standby and / or Maintenance position of the dosing device D has the unloaded transfer blade 14 through in the drawing Starting form shown in dashed lines.
  • the Move dosing device D to its operating position or pivoted and the transfer blade 14 on her Blade tip is provided with a bevel on which running application roller 10 pressed.
  • the length L of the Transfer blade 14 is here in relation to the applicator roller 10 and depending on the adjustment path required Dosing device D selected so that the transfer blade 14 in the operating position shown by solid lines in an elastically deformed state on the applicator roller 10 rests and assumes a concavely curved shape.
  • This Blade 14 style of operation is also called a bent blade style of operation designated.
  • the tip of the transfer blade 14 points approximately in the running direction of the applicator roller 10. According to the Detail enlargement Y in the drawing is the Transfer blade 14 on its inlet side, that is Applicator roller 10 contacting blade surface 14.4 with a Ceramic coating 16 provided as wear protection serves.
  • the transfer blade 14 sliding over the applicator roller 10 with a certain contact pressure scrapes the air boundary layer 18 carried along by the applicator roller 10.4 with its inlet-side blade surface 14 and at the same time directs that emerging from the metering gap 4 onto its immediately adjacent, outlet-side blade surface 14.2
  • Application medium 2 except for the surface of the application roller 10 which is now free of boundary layers. The application of the application medium 2 takes place without excess.
  • the pressure ratios built up as a result of the stripping of the air boundary layer 18 in the vicinity of the outlet-side blade tip of the transfer blade 14 are identified in the drawing by the reference symbols p 1 and p 2 , where p 2 is the atmospheric ambient pressure and p 1 is the local pressure which is lower than the atmospheric pressure designated directly on the blade tip on the outlet side.
  • the locally lower pressure p 1 causes the application medium 2 to be sucked, so to speak, from the transfer blade surface 14.2 onto the application roller 10, while the atmospheric ambient pressure p 2 simultaneously presses the application medium 2 onto the application roller 10 and thus improves anchoring or adhesion the application roller leads.
  • the invention is not limited to the above embodiments, which is only the general explanation of the basic idea serve the invention, limited. Within the scope of protection the application unit according to the invention can rather also others as the configurations described above.
  • the Application work can in particular have features that a combination of the individual characteristics of the Represent claims.
  • the transfer blade between the inlet side and drain-side lip are also other suitable Types of fastening possible, for example screwing the transfer blade on the inlet lip or the like.
  • at least one Embodiment the transfer blade in its unloaded State already have a pre-shaped curvature, which in the operating position at which the transfer blade on the Counter surface rests by the elastic bending of the Transfer blade is further enlarged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coating Apparatus (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paper (AREA)
EP97119008A 1996-12-18 1997-10-31 Dispositif pour l'application directe ou indirecte d'une substance fluide ou pâteuse sur une bande en mouvement, particulièrement de papier ou de carton Expired - Lifetime EP0849396B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19652882A DE19652882A1 (de) 1996-12-18 1996-12-18 Auftragwerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Auftragmediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
DE19652882 1996-12-18

Publications (2)

Publication Number Publication Date
EP0849396A1 true EP0849396A1 (fr) 1998-06-24
EP0849396B1 EP0849396B1 (fr) 2004-05-06

Family

ID=7815268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97119008A Expired - Lifetime EP0849396B1 (fr) 1996-12-18 1997-10-31 Dispositif pour l'application directe ou indirecte d'une substance fluide ou pâteuse sur une bande en mouvement, particulièrement de papier ou de carton

Country Status (5)

Country Link
US (1) US5997646A (fr)
EP (1) EP0849396B1 (fr)
JP (1) JPH10174919A (fr)
AT (1) ATE266124T1 (fr)
DE (2) DE19652882A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6354870B1 (en) 1999-08-12 2002-03-12 Matsushita Mobil Communication Development Corp. Apparatus and method for mounting small electrical connector

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2171808T3 (es) * 1997-10-24 2002-09-16 Daetwyler Ag Rascador para eliminar el exceso de tinta de imprenta de la superficie de una placa de imprenta.
US8545574B2 (en) * 2003-06-17 2013-10-01 The Procter & Gamble Company Methods for treating fibrous structures
JP2013187236A (ja) * 2012-03-06 2013-09-19 Tokyo Electron Ltd 太陽電池製造用のスリットノズル及び薬液塗布装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3627564A (en) * 1970-07-16 1971-12-14 Eastman Kodak Co Method for coating a continuous web
GB2173131A (en) * 1985-04-01 1986-10-08 Ecc Int Ltd Trailing blade coating apparatus
US5436030A (en) * 1992-09-11 1995-07-25 Consolidated Papers, Inc. Apparatus for and method of minimizing skip coating on a paper web
DE29520686U1 (de) * 1995-12-29 1996-04-04 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Auftragwerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
EP0761877A2 (fr) * 1995-09-06 1997-03-12 Voith Sulzer Papiermaschinen GmbH Dispositif d'application directe ou indirecte de matériau fluide ou pâteux sur une bande en mouvement, en particulier de papier ou carton

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3081191A (en) * 1959-02-18 1963-03-12 Mead Corp Doctor blade
US3230928A (en) * 1961-02-02 1966-01-25 Oxford Paper Co Blade coater
US4452833A (en) * 1982-02-08 1984-06-05 Consolidated Papers, Inc. Paper coating method
SE437683B (sv) * 1982-10-13 1985-03-11 Inventing Ab Schaber eller rakel - anliggande mot valsen - vid exv tryck-, ferg-, eller kreppning
DE4119746A1 (de) * 1991-06-15 1992-12-17 Voith Gmbh J M Rakelmesser, insbesondere fuer streicheinrichtungen der papierindustrie
US5376177A (en) * 1993-08-09 1994-12-27 Macmillan Bloedel Limited Coat weight profiling
DE19525458A1 (de) * 1995-07-14 1997-01-16 Fleissner Maschf Gmbh Co Vorrichtung zum Aufbringen eines über die Arbeitsbreite gleichmäßig dünnen Flüssigkeitsfilmes auf eine Warenbahn
DE29613761U1 (de) * 1996-08-09 1996-12-05 Lenhardt Maschinenbau GmbH, 75242 Neuhausen Vorrichtung zum Auftragen eines plastischen Abstandhalters auf eine Glastafel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3627564A (en) * 1970-07-16 1971-12-14 Eastman Kodak Co Method for coating a continuous web
GB2173131A (en) * 1985-04-01 1986-10-08 Ecc Int Ltd Trailing blade coating apparatus
US5436030A (en) * 1992-09-11 1995-07-25 Consolidated Papers, Inc. Apparatus for and method of minimizing skip coating on a paper web
EP0761877A2 (fr) * 1995-09-06 1997-03-12 Voith Sulzer Papiermaschinen GmbH Dispositif d'application directe ou indirecte de matériau fluide ou pâteux sur une bande en mouvement, en particulier de papier ou carton
DE29520686U1 (de) * 1995-12-29 1996-04-04 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Auftragwerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6354870B1 (en) 1999-08-12 2002-03-12 Matsushita Mobil Communication Development Corp. Apparatus and method for mounting small electrical connector

Also Published As

Publication number Publication date
DE59711595D1 (de) 2004-06-09
US5997646A (en) 1999-12-07
JPH10174919A (ja) 1998-06-30
ATE266124T1 (de) 2004-05-15
DE19652882A1 (de) 1998-06-25
EP0849396B1 (fr) 2004-05-06

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