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EP0514735B1 - Dispositif de couchage du type à buse pour appliquer une masse de couchage sur une bande de papier - Google Patents

Dispositif de couchage du type à buse pour appliquer une masse de couchage sur une bande de papier Download PDF

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Publication number
EP0514735B1
EP0514735B1 EP92107919A EP92107919A EP0514735B1 EP 0514735 B1 EP0514735 B1 EP 0514735B1 EP 92107919 A EP92107919 A EP 92107919A EP 92107919 A EP92107919 A EP 92107919A EP 0514735 B1 EP0514735 B1 EP 0514735B1
Authority
EP
European Patent Office
Prior art keywords
coating
sheet
overflow
web
strip
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.)
Expired - Lifetime
Application number
EP92107919A
Other languages
German (de)
English (en)
Other versions
EP0514735A1 (fr
Inventor
Rudolf Beisswanger
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.)
JM Voith GmbH
Original Assignee
JM Voith 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 JM Voith GmbH filed Critical JM Voith GmbH
Publication of EP0514735A1 publication Critical patent/EP0514735A1/fr
Application granted granted Critical
Publication of EP0514735B1 publication Critical patent/EP0514735B1/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
    • D21H23/34—Knife or blade type coaters
    • D21H23/36—Knife or blade forming part of the fluid reservoir, e.g. puddle-type trailing blade or short-dwell 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
    • 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
    • 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
    • B05C3/005—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material incorporating means for heating or cooling the liquid or other fluent 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
    • 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 nozzle-like coating device according to the preamble of claim 1.
  • Such a coating device has become known from DE-A-3 446 757. It is a matter of removing the comparatively large excess quantities from the nozzle space without air being drawn in in the region of the overflow bar.
  • the invention is therefore based on the object of designing a coating device in accordance with the preamble of claim 1 in such a way that the entire device is as compact as possible, i.e. is designed to be as space-saving as possible, furthermore that the technological requirements for such a nozzle coating device are largely met, in particular with regard to the uniformity of the coat application, and that the coating device is ultimately as simple as possible in construction.
  • the coating device is cleverly arranged into a compact unit that takes up as little space as possible, but nevertheless fulfills the functions placed on it perfectly.
  • the nozzle-like coating device shown in FIG. 1 has a nozzle space 3. This is limited in the web running direction by an overflow bar 4 on the inlet side and a metering bar 5.
  • Spreading material is fed to a distribution pipe 6.
  • the distribution pipe 6 has a plurality of outlet openings, not shown here, which are in conductive connection with a feed channel 7, so that coating slip passes through the channel 7 to the nozzle space 3 and thus to the paper web 1.
  • Halfway up the feed channel there are stumbling thresholds 7.1, which generate microturbulence in the coating slip.
  • a discharge channel 8 establishes a conductive connection with an overflow channel 9.
  • At the end of the discharge channel 8 there is an adjustable valve 10 for controlling the overflow quantity.
  • a device 11 serves to regulate the deflection compensation.
  • the compensation device 11 is designed in the present case according to DE-A-39 25 517. It has a fixed yoke 12, a sleeve 13 which surrounds the yoke 12 and pressure transmission elements 14, in the present case air bellows. When the air bellows 14 are charged with compressed air, the position of the sleeve 13 and thus also that of the metering bar 5 is changed, so that deflection compensation is produced.
  • the compensation device 11 can be designed and arranged in such a way that a sufficiently large "inner stroke" is created in order to also set the width of the gap between the edge of the metering strip 5 and the paper web 1. This means that no further facility is required.
  • a laser measuring device 15 is provided with which the exact position of the edge of the metering bar 5 can be detected. A signal obtained from this is used to control the compensation device 11.
  • the entire coating device can be structurally separated in such a way that the compensation device 11 acts solely on the metering strip 5.
  • the coating device can however, they can also be designed so that the compensation device 11 acts on the entire coating device and optionally corrects its deflection, or its distance from the paper web 1.
  • discharge channel 8 runs through the entire coating device essentially in a diagonal direction, starting from the edge of metering bar 5 to overflow channel 9.
  • the overflow gutter 9 also serves to collect the very large excess from channel 8, as well as the very small overflow that comes from the overflow bar 4. As can be seen, there is a flow body 16 between the supply duct 7 and the discharge duct 8. This is therefore essentially limited by the supply duct 7, the nozzle chamber 3 and the discharge duct 8.
  • the entire coating device is designed as a compact structural unit, which is essentially bar-shaped, and in which all functionally important elements are combined.
  • the following elements are copied around an imaginary center point: distribution pipe 6, flow body 16, laser measuring device 15, compensation device 11 and overflow channel 9.
  • the coating slip has a clear flow direction at every point, that no current crossings occur, and that - except for a small partial flow on the overflow bar 4 - it only flows in the direction of travel when it comes into contact with the paper web. This fulfills an important prerequisite for a clean, high-quality line, regardless of whether the device is used as a pre-metering device or as the only coating device.
  • the coating device shown in FIG. 2 also follows the same principles as that according to FIG. 1.
  • the elements distribution pipe 6, flow body 16 and compensation device 11 are arranged one behind the other in the web running direction.
  • Inlet channel 7 connects distribution pipe 6 to nozzle space 3. It takes a course essentially perpendicular to paper web 1.
  • Discharge channel 8 with valve 10 in turn opens on the inlet side of the coating device, ie where the paper web 1 arrives.
  • the coating slip thus rises upwards from the distribution pipe in the inlet channel 7, is thereby set to a certain, desired turbulence by trip hazards 7.1, then flows in its main quantity past the discharge channel 8, a smaller subset reaching the discharge channel, continues to reach the nozzle chamber 3. where a smaller part remains on the paper web and emerges through the gap between paper web 1 and overflow bar 5, while the larger part of the coating slip flows completely around the flow body 16 and reaches the discharge channel 8.

Landscapes

  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Pens And Brushes (AREA)

Claims (6)

  1. Dispositif de couchage du papier au moyen d'une buse pour appliquer une pâte de couchage sur une bande continue de papier (1), comportant un interstice de buse (3) qui s'étend sur la largeur de bande et qui est limité sur le côté d'entrée de la bande (1) par une barre de réglage d'évacuation (4) et sur le côté de sortie de la bande (1) par une barre de dosage (5), une conduite de distribution (6) qui répartit la pâte de couchage sur la bande de papier, un canal de distribution (7) pour amener en excédent la pâte de couchage depuis la conduite (6) jusqu'à l'interstice de buse (3), un canal de dérivation (8) pour évacuer l'excédent de la pâte de couchage à l'interstice de buse (3), et un corps d'écoulement (16) qui est parcouru par la pâte de couchage, caractérisé:
       par la combinaison des caractéristiques suivantes :
    (a) : Du côté du dispositif de couchage sur lequel arrive la bande de papier , le canal de dérivation (8) débouche dans un conduit d'évacuation (9) qui recueille en même temps le trop plein à la barre d'évacuation (4);
    (b) Il est prévu un dispositif d'équilibrage (11) pour l'équilibrage de la flexion, qui s'étend sur toute la largeur de bande, et qui se compose d' une poutre fixe (12), d' un manchon réglable (13) - qui entoure la poutre - en direction de la bande de papier (1), ainsi que d'éléments de transmission de pression (14);
    (c) Vu de côté et dans le sens de marche de la bande, les éléments de la conduite d'alimentation (6), le corps d'écoulement (16) et le dispositif d'équilibrage (11) sont installés l'un derrière l'autre.
  2. Dispositif de couchage selon la revendication 1,caractérisé:
       par le fait que la conduite d'alimentation (6) est située du côté de la barre de trop plein (4), opposé à la bande (1), à savoir à sa proximité immédiate et portant sur elle.
  3. Dispositif de couchage selon les revendications 1 ou 2, caractérisé:
       par le fait que la conduite d'alimentation (6), le corps d'écoulement (16), le dispositif d'équilibrage (11) et le conduit d'évacuation (9) sont groupés autour d'un point central imaginaire commun et l'entourent en arc de cercle.
  4. Dispositif de couchage selon les revendications 1 à 3, caractérisé:
       par le fait que le canal de dérivation (8) traverse la totalité du dispositif de couchage en diagonale depuis l'arête de la barre de dosage (5) jusqu'au conduit d'évacuation (9), vu en coupe transversale suivant la direction du défilement du papier et perpendiculairement à la bande de papier (1).
  5. Dispositif de couchage selon les revendications 1 à 4, caractérisé:
       par le fait que le dispositif d'équilibrage (11) présente une course de réglage de la douille réglable (13), suffisante pour régler la largeur de la fente entre l'arête de la barre de dosage (5) et la bande de papier (1).
  6. Dispositif de couchage selon les revendications 1 à 5, caractérisé:
       par le fait que la barre de dosage (5) est une racle tournante ou une barre profilée.
EP92107919A 1991-05-23 1992-05-12 Dispositif de couchage du type à buse pour appliquer une masse de couchage sur une bande de papier Expired - Lifetime EP0514735B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4116729 1991-05-23
DE4116729A DE4116729C2 (de) 1991-05-23 1991-05-23 Düsenartige Streicheinrichtung zum Auftragen einer Streichmasse auf eine laufende Papierbahn

Publications (2)

Publication Number Publication Date
EP0514735A1 EP0514735A1 (fr) 1992-11-25
EP0514735B1 true EP0514735B1 (fr) 1995-03-08

Family

ID=6432182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92107919A Expired - Lifetime EP0514735B1 (fr) 1991-05-23 1992-05-12 Dispositif de couchage du type à buse pour appliquer une masse de couchage sur une bande de papier

Country Status (9)

Country Link
EP (1) EP0514735B1 (fr)
JP (1) JPH05138106A (fr)
AT (1) ATE119437T1 (fr)
BR (1) BR9201991A (fr)
CA (1) CA2069344A1 (fr)
DE (2) DE4116729C2 (fr)
ES (1) ES2070550T3 (fr)
FI (1) FI97406C (fr)
NO (1) NO921984L (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI924248L (fi) * 1991-10-10 1993-04-11 Voith Gmbh J M Delningsroer
FI105533B (fi) * 1992-10-26 2000-09-15 Valmet Paper Machinery Inc Suihkupäällystyslaitteisto ja -menetelmä
DE4402626C2 (de) * 1994-01-31 1998-03-19 Voith Gmbh J M Vorrichtung zum Streichen einer Papierbahn
DE9409820U1 (de) * 1994-06-17 1994-09-01 J.M. Voith AG, St. Pölten Vorrichtung zum Auftragen von mindestens einem flüssigen Medium auf eine laufende Materialbahn
DE4428741C1 (de) * 1994-08-13 1996-02-22 Glyco Metall Werke Verfahren und Vorrichtung zur Herstellung dünner Schichten aus Flüssigkeiten als Beschichtung oder Folie
EP0993524B1 (fr) 1997-06-30 2002-11-20 Beloit Technologies, Inc. Procede et dispositif pour l'application a vitesse elevee d'une sauce de couchage sur une bande de papier en mouvement
DE19751098C2 (de) * 1997-11-18 2003-02-20 Voith Paper Patent Gmbh Verfahren und Vorrichtung zum Verstellen eines langgestreckten, sich in Breitenrichtung einer laufenden Materialbahn erstreckenden Bauteils
US6235115B1 (en) 1998-01-27 2001-05-22 Beloit Technologies, Inc. Fountain coating applicator and support beam
JP3962860B2 (ja) * 2002-02-19 2007-08-22 富士フイルム株式会社 塗布装置
JP3991261B2 (ja) * 2002-02-19 2007-10-17 富士フイルム株式会社 塗布方法
JP7402773B2 (ja) * 2020-09-29 2023-12-21 富士フイルム株式会社 塗布装置及びインクジェット印刷装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3446757A1 (de) * 1984-11-17 1986-05-22 J.M. Voith Gmbh, 7920 Heidenheim Streicheinrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3518964A (en) * 1968-05-02 1970-07-07 Bergstrom Paper Co Coating applicator with surrounding chamber
DE2359413C3 (de) * 1973-11-29 1982-02-11 Jagenberg-Werke AG, 4000 Düsseldorf Vorrichtung zum Beschichten laufender Werkstoffbahnen aus Papier, Karton, Kunststoff o.dgl.
US4250211A (en) * 1978-05-31 1981-02-10 Consolidated Papers, Inc. Paper coating method and apparatus
DE3446525A1 (de) * 1984-01-07 1985-08-01 Jagenberg AG, 4000 Düsseldorf Vorrichtung zum beschichten von ueber eine stuetzwalze laufenden materialbahnen mit regelbarer auftragsstaerke
DE8400325U1 (de) * 1984-01-07 1985-07-18 Jagenberg AG, 4000 Düsseldorf Vorrichtung zum Beschichten von über eine Stützwalze laufenden Materialbahnen mit regelbarer Auftragsstärke
WO1987000091A1 (fr) * 1985-07-05 1987-01-15 Oy Wärtsilä Ab Application a arret de courte duree avec une grande quantite de pate excedentaire
FI81640C (fi) * 1986-11-14 1990-11-12 Valmet Paper Machinery Inc Short-dwell-bestrykningsanordning foer bestrykning av en materialbana med bestrykningsmassa.
FI100311B (fi) * 1988-09-23 1997-11-14 Voith Gmbh J M Päällystyskoneiston kiillotuslaite

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3446757A1 (de) * 1984-11-17 1986-05-22 J.M. Voith Gmbh, 7920 Heidenheim Streicheinrichtung

Also Published As

Publication number Publication date
ES2070550T3 (es) 1995-06-01
DE59201574D1 (de) 1995-04-13
ATE119437T1 (de) 1995-03-15
FI97406B (fi) 1996-08-30
FI97406C (fi) 1996-12-10
FI922359A0 (fi) 1992-05-22
BR9201991A (pt) 1993-01-12
DE4116729C2 (de) 1993-11-25
CA2069344A1 (fr) 1992-11-24
JPH05138106A (ja) 1993-06-01
NO921984D0 (no) 1992-05-20
FI922359A7 (fi) 1992-11-24
EP0514735A1 (fr) 1992-11-25
NO921984L (no) 1992-11-24
DE4116729A1 (de) 1992-11-26

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