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EP0955407B1 - Procédé et appareil d'application - Google Patents

Procédé et appareil d'application Download PDF

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Publication number
EP0955407B1
EP0955407B1 EP99101846A EP99101846A EP0955407B1 EP 0955407 B1 EP0955407 B1 EP 0955407B1 EP 99101846 A EP99101846 A EP 99101846A EP 99101846 A EP99101846 A EP 99101846A EP 0955407 B1 EP0955407 B1 EP 0955407B1
Authority
EP
European Patent Office
Prior art keywords
twin
wires
wire zone
application
wire
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
EP99101846A
Other languages
German (de)
English (en)
Other versions
EP0955407A1 (fr
Inventor
Dieter Egelhof
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 EP0955407A1 publication Critical patent/EP0955407A1/fr
Application granted granted Critical
Publication of EP0955407B1 publication Critical patent/EP0955407B1/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
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
    • 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

Definitions

  • the invention relates to a method and a Device for applying a liquid or pasty Medium on a running web of paper or paper Carton according to the preamble of the first Process claim, or the first Device claim.
  • the invention is based on the German patent specification DE 194 23 48 as the closest prior art.
  • a headbox Fiber suspension deposited on a fourdrinier sieve.
  • After a Initial drainage is on the so far not by one Sieve covered side of the nonwoven fabric, a second sieve hung up.
  • On the non-fleece Side of this second sieve are more Drainage elements arranged.
  • Opposite are on the Bottom of the first screen order equipment (Applicators) assigned to the screen surface.
  • This Order facilities bring an order medium (Additive) - through the lower sieve - into the Fibrous web into it.
  • the drainage elements (Suction devices) of the second sieve support this Penetration of the application medium into the fibrous web.
  • the Twin-wire sections are essentially on one They only have drainage elements on the outside other sieve outside only order facilities arranged. The order is only on one side of the Fibrous web.
  • a disadvantage of this prior art is that the generated papers, due to the relatively coarse Sieve structure as a result of the application of the Application medium also have large screen brands that means they point surveys and on the web Depressions that reduce the quality of the paper.
  • the object of the invention is characterized by the features of first procedural claim, or the first Device claim solved.
  • a strainer that can be used for both drainage and Support the fibrous web when applying the application medium serves, with regard to its mechanical properties only be optimally designed for one of the two tasks. If the sieve is optimally designed for dewatering, so it has a relatively large mesh size, so one effective and quick drainage in the initial area of the Sieve section is created.
  • the second sieve through which the application medium is placed on the Material web is applied finely structured be designed, or a porous band than the two first screens used for the drainage of the screen be used.
  • the design of the order facility can have all known embodiments.
  • a exemplary embodiment is the use of a Coating unit in the form of a slot nozzle or Doctor device.
  • the application device be a spray application system.
  • Twin-wire zone is the arrangement of others Dewatering elements. Due to the fine mesh of the Sieves lead the drainage elements to an increase the dry content of the fibrous web, without noteworthy To leave sieve marks. An alternating one Arrangement of the drainage elements in the second Twin-wire zone also favors the symmetrical one Sheet structure of the fibrous web.
  • FIG. 1 a stock suspension is shown by means of a Headbox nozzle 1 into a gap between the screens 2, 6 injected.
  • the distance between the wire guide rolls 3, 5 determines the opening width of the gap.
  • a subsequent twin-wire sheet formation zone 4 of the first Double sieve zone 19 the suspension is dewatered to the extent that a nonwoven P is formed.
  • the sieve separation takes place in the wrapping area of the screen 6 on the Screen guide roller 8.
  • the fibrous web P follows Course of the sieve 6.
  • the fibrous web P By means of the take-off suction roll 11 and its suction zone 9, the fibrous web P on the Screen 10 deflected.
  • a second, fine-mesh sieve 13 is - coming from below - from the wire guide roller 14 deflected and from below onto the fibrous web P hung up. This creates a second twin-wire zone 20, the opposite of the first, which forms the nonwoven Double sieve zone 19, fine-mesh sieves 9, 10 has.
  • a first application device 12 carries from above through the screen 10 through an application medium on the Pulp web P on.
  • a subsequent one Drainage element 15 causes drainage after below and removes the fibrous web P further White water and / or water of the application medium.
  • a Application device 16 carries to the other side of the Fibrous web P also has an application medium.
  • the Subsequent drainage element 17 arranged at the top causes an upward drainage. This mutual arrangement of the drainage elements 15, 17 prevents one-sidedness of the fibrous web surfaces in front.

Landscapes

  • Paper (AREA)
  • Seal Device For Vehicle (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (14)

  1. Procédé d'application d'une matière d'enduction liquide ou pâteuse sur une bande de matériau (P) en mouvement constituée de papier ou de carton, dans lequel, dans une section de toile dans une première zone à double toile (19) la bande de matériau (P) est formée entre deux toiles (2, 6) s'étendant en sandwich ou éventuellement entre une toile et une surface d'un rouleau de formage,
    caractérisé en ce que
    la bande de matériau (P) est transférée à une zone à double toile supplémentaire (20) ayant deux toiles (10, 13) supplémentaires s'étendant en sandwich, et la matière d'enduction est appliquée par au moins l'une des deux toiles (10 ; 13) sur la bande de matériau (P).
  2. Procédé selon la revendication 1, caractérisé en ce qu'au moins l'une des deux toiles (10, 13) présente une autre structure plus fine que les premières toiles (2, 6).
  3. Procédé selon l'une quelconque des revendications 1 - 2, caractérisé en ce que la matière d'enduction n'est appliquée que d'un côté de la bande de matériau (P).
  4. Procédé selon l'une quelconque des revendications 1 - 3, caractérisé en ce que la matière d'enduction est appliquée des deux côtés de la bande de matériau (P).
  5. Procédé selon l'une quelconque des revendications 1 - 4, caractérisé en ce qu'à la suite de l'application de la matière d'enduction, on effectue une aspiration avec des caisses aspirantes ou des rouleaux aspirants du côté opposé de la bande de matériau.
  6. Procédé selon la revendication 5, caractérisé en ce qu'après l'aspiration, on effectue du même côté de la bande de matériau une application supplémentaire de matière d'enduction avec une aspiration subséquente du côté opposé.
  7. Machine à papier comprenant un dispositif pour l'application d'une matière d'enduction liquide ou pâteuse sur une bande de matériau (P) en mouvement constituée de papier ou de carton, avec une section de toile, qui présente une première zone à double toile (19) avec des toiles (2, 3) s'étendant en sandwich,
    caractérisée en ce que
    la première zone à double toile (19) est suivie d'une deuxième zone à double toile (20) qui présente au moins un dispositif d'application (12, 16) sur au moins un côté de la bande.
  8. Machine à papier comprenant un dispositif selon la revendication 7, caractérisée en ce qu'au moins l'une des toiles (10, 13) de la deuxième zone à double toile (20) présente une autre structure plus fine que les toiles (2, 6) de la première zone à double toile (19).
  9. Machine à papier comprenant un dispositif selon l'une quelconque des revendications 7 - 8, caractérisée en ce que les deux toiles (10, 13) de la deuxième zone à double toile présentent la même structure.
  10. Machine à papier comprenant un dispositif selon l'une quelconque des revendications 7 - 9, caractérisée en ce qu'au moins un dispositif de déshydratation (15, 17) est disposé dans la deuxième zone à double toile (20).
  11. Machine à papier comprenant un dispositif selon l'une quelconque des revendications 7 - 10, caractérisée en ce qu'au moins un dispositif de déshydratation (15, 17) et au moins un dispositif d'application (12, 16) sont disposés en alternance dans la deuxième zone à double toile (20).
  12. Machine à papier comprenant un dispositif selon l'une quelconque des revendications 7 - 11, caractérisée en ce qu'au moins un dispositif de déshydratation (15, 17) et au moins un dispositif d'application (12, 16) sont disposés en regard dans la deuxième zone à double toile (20).
  13. Machine à papier comprenant un dispositif selon l'une quelconque des revendications 7 - 12, caractérisée en ce qu'au lieu des toiles utilisées dans la deuxième zone à double toile, de construction usuelle, on utilise des bandes structurées poreuses.
  14. Machine à papier comprenant un dispositif selon l'une quelconque des revendications 7 - 13, caractérisée en ce que les dispositifs d'application (12, 16) et les éléments de déshydratation (15, 17) sont disposés en outre dans la première zone à double toile.
EP99101846A 1998-05-08 1999-01-28 Procédé et appareil d'application Expired - Lifetime EP0955407B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19820585A DE19820585A1 (de) 1998-05-08 1998-05-08 Auftragsverfahren und -vorrichtung
DE19820585 1998-05-08

Publications (2)

Publication Number Publication Date
EP0955407A1 EP0955407A1 (fr) 1999-11-10
EP0955407B1 true EP0955407B1 (fr) 2003-08-20

Family

ID=7867074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99101846A Expired - Lifetime EP0955407B1 (fr) 1998-05-08 1999-01-28 Procédé et appareil d'application

Country Status (5)

Country Link
US (1) US6258212B1 (fr)
EP (1) EP0955407B1 (fr)
AT (1) ATE247749T1 (fr)
CA (1) CA2271186A1 (fr)
DE (2) DE19820585A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1587027A (en) * 1922-09-16 1926-06-01 Goodyear Tire & Rubber Machine for making fiber composition
US3560334A (en) * 1965-09-27 1971-02-02 Mead Corp Apparatus for incorporating additive dispersions to wet webs of paper
US3577290A (en) * 1968-08-19 1971-05-04 Procter & Gamble Process of making a nonwoven fabric
DE1942348A1 (de) * 1969-08-20 1971-03-04 Voith Gmbh J M Siebpartie einer Papiermaschine mit einem Applikator
DE6932836U (de) * 1969-08-20 1971-12-30 Voith Gmbh J M Siebpartie einer papiermaschine mit einem applikator.
DE3327056A1 (de) * 1983-07-27 1985-02-14 J.M. Voith Gmbh, 7920 Heidenheim Maschine zum herstellen einer faserbahn
GB8427704D0 (en) * 1984-11-01 1984-12-05 Wiggins Teape Group Ltd Applying liquid composition to fibrous web
FR2574829B1 (fr) * 1984-12-17 1987-01-09 Du Pin Cellulose Procede et dispositif pour l'elimination du liquide d'une couche obtenue notamment par un procede papetier
AT391677B (de) * 1988-11-22 1990-11-12 Fehrer Textilmasch Vorrichtung zum gleichsinnigen aufbringen eines vliesbandes auf eine bewegte traegerbahn

Also Published As

Publication number Publication date
DE19820585A1 (de) 1999-11-11
ATE247749T1 (de) 2003-09-15
DE59906635D1 (de) 2003-09-25
EP0955407A1 (fr) 1999-11-10
CA2271186A1 (fr) 1999-11-08
US6258212B1 (en) 2001-07-10

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