EP0761874B1 - Dispositif pour la fabircation d'un papier ou d'un carton multicouches - Google Patents

Dispositif pour la fabircation d'un papier ou d'un carton multicouches Download PDF

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Publication number
EP0761874B1
EP0761874B1 EP96112594A EP96112594A EP0761874B1 EP 0761874 B1 EP0761874 B1 EP 0761874B1 EP 96112594 A EP96112594 A EP 96112594A EP 96112594 A EP96112594 A EP 96112594A EP 0761874 B1 EP0761874 B1 EP 0761874B1
Authority
EP
European Patent Office
Prior art keywords
wire
forming
foils
suspension
jet
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.)
Revoked
Application number
EP96112594A
Other languages
German (de)
English (en)
Other versions
EP0761874A3 (fr
EP0761874A2 (fr
Inventor
Heinz Steckenreuter
Helmut Stoerr
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
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Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0761874A2 publication Critical patent/EP0761874A2/fr
Publication of EP0761874A3 publication Critical patent/EP0761874A3/fr
Application granted granted Critical
Publication of EP0761874B1 publication Critical patent/EP0761874B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
    • D21F11/04—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type paper or board consisting on two or more layers
    • 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

Definitions

  • the invention relates to a device for producing a multilayer Paper or cardboard according to the preamble of claim 1.
  • the invention has for its object a device of the beginning to create mentioned genus, with which the advantages of the with relatively little effort Formation influence, the high gap strength and the plybond are realizable.
  • the device according to the invention has the essential advantage that Forming roller optimal sheet formation takes place and due to the centrifugal forces in the Forming roller area very early on the fine substances supporting the rubber effect the later rubber side of the top layer.
  • the subsequent relative steeply descending twin-wire section with forming strips promotes removal of water.
  • the strips can be without or with little negative pressure be worked because the falling water essentially only redirects must become.
  • the former is easy to regulate and requires little energy. So is achieved overall with relatively simple means that when bringing together the upper with the lower layer sets a high gap strength without the Formation has been negatively affected.
  • the forming strips in the downward part of the twin wire former can be on one or be attached on both sides. As is well known, such strips are used in this way the sieves pressed that they change their course. This results in printing and Suction effect on the fiber suspension layer between the sieves.
  • the fine matter important for gushing can be controlled by controlled vacuum and / or sensitively adjustable forming strips on the outer screen with particularly good ones Effect concentrated in the side of the upper layer that later served as a gulp become.
  • Forming roll drainage to produce a reduced L / Q ratio is that the strength ratio of the dry web, measured lengthways, put in relation for cross-measured strength.
  • FIG. 1 shows an example of a device belonging to the device according to the invention Twin wire former 3.
  • An inner wire 4 and an outer wire 5 are in the area of Forming roller 8 merged. Introduces into this area of the gusset Headbox 1 a suspension jet 9.
  • the two screens 4 and 5 as well as the Intermediate suspension layer are on the forming roller 8 in drained substantially in the course of the wrap angle ⁇ . Part of the water can be thrown through the outer sieve 5 into the water pan 14.
  • the Twin wire is then guided tangentially away from the forming roller 8, wherein it essentially has a downward direction.
  • Embodiment are on both sides, i.e. in the inner sieve 4 and in the outer sieve 5, Forming strips 10 and 11 attached. However, strips on both sides are not always required.
  • 5 strips 11 attached to the outer sieve for Sieve movably and elastically supported.
  • the water passing through the sieves on the strips becomes in water tanks 12 or 13 caught.
  • Water tub 12 may be provided with a vacuum. This extra effort is but only necessary in special cases.
  • the fiber layer being held on the inner sieve 4 and at Deflection via the deflection roller 15 to the lower one formed on the primary longitudinal screen 2 Layer 7 is filed.
  • the multilayered web thus created remains on the Primary longitudinal screen 2, while the inner screen 4 is lifted and to the forming roller 8 is returned.
  • a suction box 16 can hold the layers on the Favor primary longitudinal screen 2.
  • Fig. 2 the headbox 1 and 1 'is shown very schematically in two extreme positions. It can be seen that on the beam 9, which forms a plane, the surface normal N is drawn. This surface normal N takes the angle ⁇ to the vertical V1 (left Side of the figure). The right side of the figure shows a perpendicular one Suspension beam 9 ', the normal N' of which forms an angle ⁇ 'to the vertical V1.
  • the sector 12 is shown in FIG. 3. It is limited by an angle ⁇ with respect to the vertical V2 inwards and by an angle ⁇ 'with respect to the Vertical V2 outwards.
  • the two screens 4 and 5 should be one in this area Take course that lies within sector 12.
  • the sieves run between forming strips 10, 11 arranged on both sides of the sieves meandering, as it is exaggerated in Fig. 4. You can see between adjacent, opposing forming strips 10 and 11, the deflection H of Sieves, shown here by arrows on the outer sieve 5.
  • this principle can also be reversed in the manner that after the separation of the inner wire 4 from the outer wire 5, the upper layer 6 on the Outer sieve 5 remains and is deposited by it onto the lower layer 7.
  • FIG. 7 shows a favorable technical design of the separating suction device 17. He is realized by dividing the water pan 12 and placed under negative pressure. It contains several sieve guide strips 18.

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  • Paper (AREA)

Claims (16)

  1. Procédé de fabrication d'un papier ou carton à plusieurs couches, comprenant une toile longitudinale primaire (2) et une forme à double toile (3) disposée par-dessus, formée en tant que formeur à écartement, comprenant une toile interne (4) et une toile externe (5), ainsi que des nervures de formage (10, 11) modifiant l'allure de la toile, s'appliquant au moins sur l'une de ces toiles, la forme à double toile (3) formant une couche supérieure (6) du papier ou carton à plusieurs couches, et reposant sur une couche inférieure (7), les deux toiles (4 et 5) étant à nouveau séparées et la couche supérieure (6) étant à nouveau guidée sur la toile interne (4) ou la toile externe (5) vers la toile longitudinale primaire (2),
    caractérisé en ce que
    a) la forme à double toile (3) présente au début un rouleau de formage (8) enveloppé par la toile interne (4) ayant un diamètre extérieur d'au moins 800 mm,
    b) l'angle (α) que forme la normale (N) au jet de suspension (9) avec la verticale (V1) lors de son incidence sur le rouleau de formage (8), est compris entre -60° (jet de suspension orienté vers le haut) et +90° (jet de suspension orienté vers le bas),
    c) la toile interne (4) et la toile externe (5) adoptent une allure, après le rouleau de formage (8) dans la région des nervures de formage (10, 11), qui est orientée vers le bas et qui en l'occurrence se trouve dans les limites d'un secteur (12) qui s'écarte de la verticale (V2) suivant un angle (β) de 10° maximum par rapport au côté de la toile interne et suivant un angle (β') de 45° maximum par rapport au côté de la toile externe.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    l'angle (α) que forme la normale (N) au jet de suspension (9) avec la verticale (V1) lors de son incidence sur le rouleau de formage (8), est compris entre -10° (jet de suspension orienté légèrement vers le haut) et +90° (jet de suspension orienté vers le bas).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que des nervures de formage (10 et 11) sont montées des deux côtés dans la région orientée vers le bas de la double toile.
  4. Dispositif selon la revendication 3, caractérisé en ce que les toiles forment dans la région des nervures de formage (10, 11) un parcours en méandres.
  5. Dispositif selon la revendication 4, caractérisé en ce que la forme en méandres est créée par déviation (H) des toiles sur des nervures de formage (10, 11) voisines, en regard l'une de l'autre, dans la région comprise entre 0,5 et 5 mm.
  6. Dispositif selon la revendication 1, 2, 3, 4 ou 5, caractérisé en ce que plusieurs nervures de formage (10, 11) disposées directement les unes derrière les autres dans la direction d'avance, appartenant à une toile, forment sur leur côté tourné vers la toile, dans la direction d'avance de la toile, une courbe d'enveloppement cintrée.
  7. Dispositif selon la revendication 6, caractérisé en ce que la courbure de la courbe d'enveloppement a la même orientation de courbure que le rouleau de formage (8).
  8. Dispositif selon la revendication 1, 2, 3, 4, 5, 6 ou 7, caractérisé en ce que l'angle d'enveloppement (ä) des deux toiles (4, 5) sur le rouleau de formage (8) est compris entre 10° et 180°.
  9. Dispositif selon la revendication 8, caractérisé en ce que l'angle d'enveloppement (ä) des deux toiles (4, 5) sur le rouleau de formage (8) est compris entre 10° et 100°.
  10. Dispositif selon la revendication 1 ou 2, caractérisé en ce que dans la région d'au moins 90% des nervures de formage (10, 11), aucune dépression n'est appliquée.
  11. Dispositif selon la revendication 10, caractérisé en ce qu'une dépression n'est appliquée sur aucune des nervures de formage (10, 11).
  12. Dispositif selon la revendication 3, 4 ou 5, caractérisé en ce que les nervures de formage (11) appliquées sur la toile externe (5) sont supportées de manière mobile et élastique en direction de la toile.
  13. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une caisse aspirante séparatrice (17), dans la zone d'action de laquelle la toile externe (5) est evacuée, s'applique dans la direction d'avance derrière les nervures de formage (10, 11) sur la toile interne (4).
  14. Dispositif selon la revendication 13, caractérisé en ce que la caisse aspirante séparatrice (17) est conçue en tant qu'unité de construction avec la cuve d'eau (12) recevant les nervures de formage (10) sur la toile interne (4), une autre dépression que celle dans la cuve d'eau (12) étant possible par séparation dans la caisse aspirante séparatrice (17).
  15. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une dépression est appliquée vers l'intérieur sur le rouleau de formage (8) dans la région d'enveloppement.
  16. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la couche supérieure (6) de la couche inférieure (7) est guidée de telle sorte qu'après la séparation de la toile interne (4) de la toile externe (5), la couche supérieure soit maintenue sur la toile interne (4) et soit ensuite déposée sur la couche inférieure (7).
EP96112594A 1995-08-23 1996-08-03 Dispositif pour la fabircation d'un papier ou d'un carton multicouches Revoked EP0761874B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19530983 1995-08-23
DE19530983A DE19530983B4 (de) 1995-08-23 1995-08-23 Vorrichtung zum Herstellen eines mehrlagigen Papiers oder Kartons

Publications (3)

Publication Number Publication Date
EP0761874A2 EP0761874A2 (fr) 1997-03-12
EP0761874A3 EP0761874A3 (fr) 1998-01-14
EP0761874B1 true EP0761874B1 (fr) 2001-06-13

Family

ID=7770172

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96112594A Revoked EP0761874B1 (fr) 1995-08-23 1996-08-03 Dispositif pour la fabircation d'un papier ou d'un carton multicouches

Country Status (3)

Country Link
US (1) US5788816A (fr)
EP (1) EP0761874B1 (fr)
DE (1) DE19530983B4 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6702926B1 (en) * 1996-12-11 2004-03-09 Voith Sulzer Papiermaschinen Gmbh Process for forming a multi-ply fiber web
DE19651493A1 (de) * 1996-12-11 1998-06-18 Voith Sulzer Papiermasch Gmbh Siebpartie und Verfahren zum Formen einer mehrlagigen Faserstoffbahn
DE19803591A1 (de) 1998-01-30 1999-08-05 Voith Sulzer Papiertech Patent Doppelsieb-Former
DE19903943A1 (de) * 1999-01-28 2000-08-03 Voith Sulzer Papiertech Patent Verfahren und Vorrichtung zum Bilden einer Faserstoffbahn
DE19949354A1 (de) * 1999-10-13 2001-04-19 Voith Paper Patent Gmbh Mehrlagengapformer
DE19950806A1 (de) * 1999-10-21 2001-04-26 Voith Paper Patent Gmbh Doppelsiebformer
DE10161056A1 (de) * 2001-12-12 2003-06-26 Voith Paper Patent Gmbh Siebpartie
DE50309144D1 (de) * 2002-09-13 2008-03-27 Voith Patent Gmbh Doppelsiebformer zur Herstellung einer Faserstoffbahn
DE10303464A1 (de) * 2003-01-29 2004-09-30 Voith Paper Patent Gmbh Verfahren und Doppelsiebformer einer Maschine zur Herstellung einer Faserstoffbahn
DE102007015638A1 (de) * 2007-03-31 2008-10-02 Voith Patent Gmbh Maschine zur Herstellung einer Tissuebahn, insbesondere Tissuemaschine
DE102008002278A1 (de) 2008-06-06 2009-12-10 Voith Patent Gmbh Verfahren zur Herstellung von Testliner und/oder Wellenstoff
DE102008002280A1 (de) 2008-06-06 2009-12-10 Voith Patent Gmbh Verfahren zur Herstellung von Testliner und/oder Wellenstoff

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE759845A (fr) * 1969-12-12 1971-05-17 Beloit Corp Dispositif perfectionne de formage
US3915791A (en) * 1972-05-12 1975-10-28 Black Clawson Co Method for producing multi-ply paper on a twin-wire machine
JPS547884B2 (fr) * 1973-03-12 1979-04-11
US3944464A (en) * 1974-05-10 1976-03-16 International Paper Company Forming section for twin-wire papermaking machine
FI70739C (fi) * 1977-04-28 1986-10-06 Valmet Oy Banbildningsenhet vid framstaellning av flerskiktskartong
AT370796B (de) * 1981-04-27 1983-05-10 Escher Wyss Gmbh Doppelsiebpapiermaschine
DE3226388C2 (de) * 1982-07-15 1985-06-13 Sulzer-Escher Wyss GmbH, 7980 Ravensburg Vorrichtung zur Abnahme der Ränder der Stoffsuspension beim Austritt des Stoffes aus den Stoffauflauf einer Papiermaschine
FI98540C (fi) * 1989-05-08 1997-07-10 Valmet Corp Laite paperi- tai kartonkirainan muodostamiseksi kuitumateriaalista
US5389206A (en) * 1989-08-22 1995-02-14 J. M. Voith Gmbh Twin wire former
DE4026953C2 (de) * 1990-01-26 1995-11-30 Escher Wyss Gmbh Entwässerungsvorrichtung und Verfahren zur Entwässerung an einem Doppelsiebformer
DE4102065C2 (de) * 1991-01-24 1996-02-01 Voith Sulzer Papiermasch Gmbh Doppelsiebformer
MY131659A (en) * 1993-12-08 2007-08-30 Beloit Technologies Inc Machine and method for forming multiply linerboard from two sheets
DE4402273C2 (de) * 1994-01-27 1995-11-23 Voith Gmbh J M Papiermaschine zur Herstellung mehrlagiger Papierbahnen

Also Published As

Publication number Publication date
US5788816A (en) 1998-08-04
DE19530983A1 (de) 1997-02-27
DE19530983B4 (de) 2006-04-27
EP0761874A3 (fr) 1998-01-14
EP0761874A2 (fr) 1997-03-12

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