EP0302233A1 - Vorrichtung zum Beschichten einer Materialbahn - Google Patents

Vorrichtung zum Beschichten einer Materialbahn Download PDF

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Publication number
EP0302233A1
EP0302233A1 EP88110548A EP88110548A EP0302233A1 EP 0302233 A1 EP0302233 A1 EP 0302233A1 EP 88110548 A EP88110548 A EP 88110548A EP 88110548 A EP88110548 A EP 88110548A EP 0302233 A1 EP0302233 A1 EP 0302233A1
Authority
EP
European Patent Office
Prior art keywords
metering system
counter
roller
web
application chamber
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Withdrawn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
EP88110548A
Other languages
German (de)
English (en)
French (fr)
Inventor
Reinhard Knop
Herbert Sommer
Georg Müller
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.)
Jagenberg AG
Original Assignee
Jagenberg AG
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 Jagenberg AG filed Critical Jagenberg AG
Publication of EP0302233A1 publication Critical patent/EP0302233A1/de
Withdrawn legal-status Critical Current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
    • D21H23/40—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 only one side of the paper being in contact with the 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
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/0005—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating
    • D21H5/0012—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by bringing paper into contact with an excess of fluids, the paper carrying away only a part of the fluid material, e.g. by passing through liquids, gases or vapours
    • D21H5/0015—Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by bringing paper into contact with an excess of fluids, the paper carrying away only a part of the fluid material, e.g. by passing through liquids, gases or vapours only one side of the paper being in contact with the treating medium, e.g. paper carried by support

Definitions

  • the invention relates to a device for coating a material web using a counter roller according to the preamble of claim 1, the coating being carried out directly on the material web guided around a counter roller or indirectly only by coating application onto the roller surface and from there onto the material web.
  • Nozzle applicators are preferably used for coating paper webs if low line weights (less than 10 g / m2) are to be achieved at high paper speeds (greater than 700 m / min).
  • the known generic nozzle applicators contain essential components an application chamber open to the counter-roller, which is fed with coating material from a pre-distribution chamber via a gap which extends across the working width, and - A dosing system (usually with a doctor knife), which is arranged in the web running direction behind the application chamber and closes the application chamber.
  • the inlet-side boundary of the application chamber is formed by an overflow plate, which ends at a short distance from the counter roller and thus leaves an overflow gap free.
  • an overflow plate which ends at a short distance from the counter roller and thus leaves an overflow gap free.
  • the invention has for its object to provide a generic coating device with which even at high paper web speeds (up to 2000 m / min) a uniform application of paint and a high line quality can be achieved.
  • the guidance of the coating material in a calming guiding zone according to the invention results in a uniform Pressure distribution over the entire penetration area, which can be set reproducibly.
  • the guiding zone of the coating material ends shortly before the metering element, so that the coating material flowing back can be discharged unhindered and separately from the incoming coating material. There is no counter flow in the guiding zone.
  • the circulation rate of the coating material for rheologically critical colors can be halved compared to old constructions in which the application chamber is closed off directly by the metering element, without the line image being adversely affected. This enables the pumps to be dimensioned considerably smaller.
  • the device according to the invention is used for coating a paper web 2 guided around a counter roller 1.
  • the applicator which has a cross section perpendicular to the counter roller axis over the working width, has an application chamber 3 which is delimited on the paper inlet side by an overflow plate 4, which is in a certain Distance in front of the counter roller 1 ends, leaving an overflow gap 5 free.
  • the application chamber is delimited by a wall 6 leading away from the counter-roller 1, a preferably adjustable one between the top plate 4 and the wall 6 Inlet slot 7 remains free for the coating slip.
  • a guide surface 8 which is parallel or slightly converging (max. 2-3 °) to the mating roll jacket. which ends shortly before the metering element 9 and thus leaves an outlet channel 10 free for excess coating material.
  • the dosing element 9 is a scraper knife which is fastened in a pivotable scraper bar 11. It is also possible to use a metering system with a scraper bar, which is elastically supported in a swiveling holder, or a doctor blade.
  • the length of the guide surface 8 in the web running direction is at least 50% of the distance overflow plate 4 - metering element 9.
  • the opening width of the ink guide channel 12 formed by the counter roller 1 and the guide surface perpendicular to the counter roller axis is between 1.5% and 15%, preferably between 2.5% and 5% the length of the color guide surface 8.
  • the drain channel 10 is connected at an acute angle to the opening between the guide surface 8 and the metering element 9.
  • return channels 13 are connected to the outlet channel 10 and open into a pre-distribution chamber 14 from which the application chamber 3 is fed with new coating material via the feed slot 7.
  • the junction of the return channels 13 can be arranged in the inlet area of the feed slot 7, in order to utilize the injector effect of the fresh coating material flowing to the application chamber 3.
  • the pre-distribution chamber 14 is supplied with coating material via an ink supply system 15.
  • the wall 16 delimiting the pre-distribution chamber 14 on the inlet side immediately formed the holder for the overflow plate 4, and it can be opened against the paper travel direction for cleaning purposes.
  • the scraper knife 9 is firmly clamped with its foot in a displaceable terminal strip 17 and is supported below the metering point by a comb strip 18.
  • the clamping and comb bar 17, 18 are mounted in the scraper bar 11 which can be pivoted about the metering point.
  • the return channel 13 connected to the discharge channel 10 opens into the application chamber 3. It is connected at an acute angle to the opening of the feed slot 7.
  • the boundary 19 of the drain channel 10 is extended with an elastic sealing lip 20 which bears against the doctor blade 9.
  • the width of the drain channel 10, i.e. H. the distance between the guide surface 8 and the metering element 9 is 1-15 mm.
  • the embodiment according to FIG. 4 has a hollow body 21 which extends over the working width and in which the pre-distribution chamber 22 is located.
  • the guide surface 8 is formed by the boundary of the hollow body 21 to the counter roller 1.
  • the return channel 13 connected to the outlet channel 10 is guided around the hollow body 21 and ends directly in the application chamber 3.
  • the inlet slot 23 opens into the application chamber 3 in parallel or at an acute angle with the return channel 13.
  • the outlet channels 10 and return channels 13 are one - or provided several times.
  • a support structure 24 supports the hollow body 21 and the ink supply system 15 opening into the pre-distribution chamber 22.
  • the inlet-side boundary 25 of the support structure 24 ends at a short distance from the counter-roller 1 in order to leave the gap 5 free.
  • the limitation of the outlet channel 10 is extended, as in the embodiment according to FIG. 3, with a sealing lip 20 which bears on the scraper knife 9 in order to enable the metering system 9, 17 to pivot independently of the supporting structure 24.
  • the coating or spreading of the paper web 2 guided around the counter roller 1 is carried out by applying coating slip onto the web 2 in the application chamber 3 and metering the desired coating weight on the web 2 with the aid of the metering element 9.
  • an excess of coating slip is continuously supplied via the feed slot 7 or 23, so that the chamber 3 is constantly filled.
  • the dosing element 9 arranged at the end of the application unit doses the paint in the desired basis weight by removing the excess portion via the drain channel 10. In the embodiments according to FIGS. 2-4, this excess portion is fed back into the application chamber or into the distribution chamber.
  • the paint is introduced into the application chamber 3 with increased pressure. This pressure drops rapidly at the outlet of the application chamber 3, that is to say at the beginning of the guide channel 12.

Landscapes

  • Coating Apparatus (AREA)
  • Paper (AREA)
EP88110548A 1987-08-01 1988-07-01 Vorrichtung zum Beschichten einer Materialbahn Withdrawn EP0302233A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3725545A DE3725545A1 (de) 1987-08-01 1987-08-01 Vorrichtung zum beschichten einer materialbahn
DE3725545 1987-08-01

Publications (1)

Publication Number Publication Date
EP0302233A1 true EP0302233A1 (de) 1989-02-08

Family

ID=6332863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88110548A Withdrawn EP0302233A1 (de) 1987-08-01 1988-07-01 Vorrichtung zum Beschichten einer Materialbahn

Country Status (5)

Country Link
US (1) US4920913A (fi)
EP (1) EP0302233A1 (fi)
BR (1) BR8803796A (fi)
DE (1) DE3725545A1 (fi)
FI (1) FI883581A (fi)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991012373A1 (en) * 1990-02-16 1991-08-22 Beloit Corporation Coating head for applying a coating suspension layer on a paper sheet
WO1993010976A1 (de) * 1991-11-26 1993-06-10 Cornelis Gorter Farbkammerrakel für einen farbübertragenden körper
EP0551834A1 (de) * 1992-01-15 1993-07-21 KOENIG & BAUER-ALBERT AKTIENGESELLSCHAFT Kammerrakel für ein Kurzfarbwerk einer Rotationsdruckmaschine

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4135195C2 (de) * 1991-10-25 1995-02-09 Voith Gmbh J M Streicheinrichtung
FI105533B (fi) * 1992-10-26 2000-09-15 Valmet Paper Machinery Inc Suihkupäällystyslaitteisto ja -menetelmä
US5366551A (en) * 1992-03-11 1994-11-22 Institute Of Paper Science And Technology, Inc. Coating device for traveling webs
US5354376A (en) * 1992-03-11 1994-10-11 Institute Of Paper Science And Technology Flotation coating device for traveling webs
DE4224726A1 (de) * 1992-07-27 1994-02-03 Voith Gmbh J M Streicheinrichtung mit zwischen einer Auftragswalze und einer Gegenwalze gebildetem Auftragsspalt
DE4230241C2 (de) * 1992-09-10 1994-07-14 Voith Gmbh J M Auftragswerk zur Beschichtung von Bahnen aus Papier oder Karton
FI105260B (fi) * 1994-10-24 2000-07-14 Valmet Paper Machinery Inc Menetelmä ja sovitelma päällysteprofiilin säätämiseksi lyhytviipymätyyppisessä päällystyksessä
DE19541574A1 (de) * 1995-11-08 1997-05-15 Jagenberg Papiertech Gmbh Vorrichtung zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen
US5824369A (en) * 1996-06-24 1998-10-20 Beloit Technologies, Inc. Method and apparatus for coating a traveling paper web
US5820674A (en) * 1996-08-16 1998-10-13 Institute Of Paper Science And Technology, Inc. Vortex-free coating device for traveling webs
AU4655597A (en) * 1997-06-30 1999-01-19 Beloit Technologies, Inc. Method and apparatus for the high speed application of coating to a traveling paper web
DE19856741C2 (de) 1998-12-09 2001-02-01 Baumeister & Ostler Gmbh Co Laderaumabdeckung bzw. Hutablage mit beweglichen Eckstücken
FR2793441B1 (fr) * 1999-05-11 2001-08-03 Saint Eloi Mecanique Outil Sa Dispositif pour l'encrage d'un anilox d'une machine a impression flexographique
DE202008016098U1 (de) * 2008-12-05 2009-03-05 Herbert Olbrich Gmbh & Co. Kg Vorrichtung zum Beschichten von bahnförmigen Materialien

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1577722A1 (de) * 1963-12-06 1970-01-29 Agfa Gevaert Ag Verfahren und Vorrichtung zum Beschichten von laufenden Folien,Baendern od.dgl.,mitviskosen Loesungen
DE2055405A1 (de) * 1970-11-11 1972-05-25 Joseph Eck & Söhne; 4000 Düsseldorf Vorrichtung zum Auftragen von Beschichtungsmassen auf bahnenförmige Träger
FR2545736A1 (fr) * 1983-05-12 1984-11-16 Waertsilae Oy Ab Apareil pour le revetement d'une feuille
DE3338095A1 (de) * 1983-10-20 1985-05-09 J.M. Voith Gmbh, 7920 Heidenheim Streicheinrichtung
DE3438380A1 (de) * 1984-10-19 1986-04-24 J.M. Voith Gmbh, 7920 Heidenheim Streicheinrichtung zur beschichtung laufender warenbahnen
DE3541416A1 (de) * 1984-10-19 1987-05-27 Voith Gmbh J M Streicheinrichtung zur beschichtung laufender warenbahnen
DE3616645A1 (de) * 1986-05-16 1987-11-19 Voith Gmbh J M Streicheinrichtung
DE3738658A1 (de) * 1986-11-14 1988-05-26 Valmet Paper Machinery Inc Kurzverweil-streichvorrichtung zum beschichten einer bahn mit einer streichmasse

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3273535A (en) * 1964-10-06 1966-09-20 Rice Barton Corp Trailing-blade-coater including adjustable drag-blade
US3663292A (en) * 1969-02-10 1972-05-16 Agfa Gevaert Ag Process for coating strip-form substrates
US4133293A (en) * 1975-12-03 1979-01-09 Smejda Richard K Liquid feeding, patterning and blending system
US4250211A (en) * 1978-05-31 1981-02-10 Consolidated Papers, Inc. Paper coating method and apparatus
US4369731A (en) * 1981-09-02 1983-01-25 Consolidated Papers, Inc. Coating apparatus having an internal leveling blade
US4387663A (en) * 1981-10-07 1983-06-14 Beloit Corporation Blade type fountain coater metering device
US4440105A (en) * 1983-01-17 1984-04-03 Consolidated Papers, Inc. Paper coating apparatus having a replaceable orifice plate
DE3336553C2 (de) * 1983-10-07 1986-07-03 J.M. Voith Gmbh, 7920 Heidenheim Streicheinrichtung zur Beschichtung laufender Warenbahnen
CH663362A5 (de) * 1984-01-07 1987-12-15 Jagenberg Ag Vorrichtung zum beschichten von ueber eine stuetzwalze laufenden materialbahnen mit regelbarer auftragsstaerke.
DE3446525A1 (de) * 1984-01-07 1985-08-01 Jagenberg AG, 4000 Düsseldorf Vorrichtung zum beschichten von ueber eine stuetzwalze laufenden materialbahnen mit regelbarer auftragsstaerke
DE8414904U1 (de) * 1984-05-16 1986-02-06 Jagenberg AG, 4000 Düsseldorf Vorrichtung zum kontinuierlichen gleichzeitigen Aufbringen von Beschichtungen auf eine, vorzugsweise beide Seiten einer Materialbahn
FI853041A0 (fi) * 1985-08-07 1985-08-07 Valmet Oy Anordning foer belaeggning av materialbana.

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1577722A1 (de) * 1963-12-06 1970-01-29 Agfa Gevaert Ag Verfahren und Vorrichtung zum Beschichten von laufenden Folien,Baendern od.dgl.,mitviskosen Loesungen
DE2055405A1 (de) * 1970-11-11 1972-05-25 Joseph Eck & Söhne; 4000 Düsseldorf Vorrichtung zum Auftragen von Beschichtungsmassen auf bahnenförmige Träger
FR2545736A1 (fr) * 1983-05-12 1984-11-16 Waertsilae Oy Ab Apareil pour le revetement d'une feuille
DE3338095A1 (de) * 1983-10-20 1985-05-09 J.M. Voith Gmbh, 7920 Heidenheim Streicheinrichtung
DE3438380A1 (de) * 1984-10-19 1986-04-24 J.M. Voith Gmbh, 7920 Heidenheim Streicheinrichtung zur beschichtung laufender warenbahnen
DE3541416A1 (de) * 1984-10-19 1987-05-27 Voith Gmbh J M Streicheinrichtung zur beschichtung laufender warenbahnen
DE3616645A1 (de) * 1986-05-16 1987-11-19 Voith Gmbh J M Streicheinrichtung
DE3738658A1 (de) * 1986-11-14 1988-05-26 Valmet Paper Machinery Inc Kurzverweil-streichvorrichtung zum beschichten einer bahn mit einer streichmasse

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991012373A1 (en) * 1990-02-16 1991-08-22 Beloit Corporation Coating head for applying a coating suspension layer on a paper sheet
AU646845B2 (en) * 1990-02-16 1994-03-10 Beloit Technologies, Inc. Coating head for applying a coating suspension layer on a paper sheet
WO1993010976A1 (de) * 1991-11-26 1993-06-10 Cornelis Gorter Farbkammerrakel für einen farbübertragenden körper
EP0551834A1 (de) * 1992-01-15 1993-07-21 KOENIG & BAUER-ALBERT AKTIENGESELLSCHAFT Kammerrakel für ein Kurzfarbwerk einer Rotationsdruckmaschine

Also Published As

Publication number Publication date
FI883581A0 (fi) 1988-07-29
DE3725545A1 (de) 1989-02-09
US4920913A (en) 1990-05-01
BR8803796A (pt) 1989-02-21
FI883581A (fi) 1989-02-02

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