EP0761874A2 - 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
EP0761874A2
EP0761874A2 EP96112594A EP96112594A EP0761874A2 EP 0761874 A2 EP0761874 A2 EP 0761874A2 EP 96112594 A EP96112594 A EP 96112594A EP 96112594 A EP96112594 A EP 96112594A EP 0761874 A2 EP0761874 A2 EP 0761874A2
Authority
EP
European Patent Office
Prior art keywords
sieve
forming
strips
screen
angle
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
EP96112594A
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German (de)
English (en)
Other versions
EP0761874A3 (fr
EP0761874B1 (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 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
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Application filed by Voith Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen 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.
  • Devices of this type have the advantage that the layers can be formed separately. However, this can lead to so-called gap strength problems, in particular in the case of multilayer cardboard, i.e. to problems regarding the adhesion between the layers.
  • the attached twin wire formers are also very complex, both in terms of the device, as well as the space and energy requirements.
  • the invention is therefore based on the object of creating a device of the type mentioned at the outset in which the advantages of influencing the formation, the high gap strength and the ply bond can be achieved with relatively little effort.
  • the device according to the invention has the essential advantage that the forming roll ensures optimum sheet formation and, due to the centrifugal forces in the forming roll area, the fine substances which support the rubber effect are brought very early to the later rubber side of the upper layer.
  • the subsequent, relatively steep downward double-wire section with forming strips favors the removal of water. You can work on the strips completely without or with little negative pressure, since the falling water essentially only has to be redirected.
  • the former is easy to regulate and requires little energy. So it is achieved with relatively simple means that when bringing together the upper and lower layers establish a high gap strength without the formation being adversely affected.
  • the forming strips in the downward part of the twin wire former can be attached to one or both sides. As is known, such strips are pressed against the sieves in such a way that they change their course. This results in pressure and suction on the fiber suspension layer between the sieves.
  • the fine substances important for gushing can be concentrated in the side of the upper layer that will later be used for gushing by means of controlled negative pressure and / or sensitively adjustable forming strips on the outer screen.
  • a reduced L / Q ratio can be generated by forming roll dewatering, that is the strength ratio of the dry web, measured lengthways, in relation to the cross-measured strength.
  • FIG. 1 shows an example of a twin wire former 3 belonging to the device according to the invention.
  • An inner wire 4 and an outer wire 5 are brought together in the area of the forming roller 8. Introduces into this area of the gusset Headbox 1 a suspension jet 9.
  • the two screens 4 and 5 and the suspension layer located between them are dewatered on the forming roller 8 essentially 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, it essentially having a downward direction.
  • forming strips 10 and 11 are attached on both sides, ie in the inner wire 4 and in the outer wire 5. However, strips on both sides are not always necessary.
  • strips 11 mounted in the outer sieve 5 can be made movable and elastically supported towards the sieve.
  • the water passing through the sieves on the strips is collected in water tanks 12 and 13, respectively.
  • the water pan 12 located in the inner sieve 4 can be provided with a negative pressure. This additional effort is only necessary in special cases.
  • the two sieves are separated, the fiber layer being held on the inner sieve 4 and, when deflected, deposited on the lower layer 7 formed on the primary longitudinal sieve 2 via the deflecting roller 15.
  • the resulting multi-layer web remains on the primary longitudinal screen 2, while the inner screen 4 is lifted off and returned to the forming roller 8.
  • a suction box 16 can favor the holding of the layers on the primary longitudinal screen 2.
  • Fig. 2 the headbox 1 and 1 'is shown very schematically in two extreme positions. It can be seen that the surface normal N is drawn on the beam 9, which forms a plane. This surface normal N takes the angle ⁇ to the vertical V1 (left side of the figure). The right side of the figure shows a perpendicularly formed 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 are to take a course in this area which lies within the sector 12.
  • the sieves run in a meandering manner between forming strips 10, 11 arranged on both sides of the sieves, as is exaggeratedly shown in FIG. 4.
  • the deflection H of the sieves can be seen between adjacent, opposing forming strips 10 and 11, shown here by arrows on the outer sieve 5.
  • the upper layer 6 formed in the twin-wire former is held on the inner wire 4 after the wire separation and then placed on the lower layer 7. This arrangement is optimal in most cases for solving the task.
  • FIG. 7 shows a favorable technical design of the separating suction device 17. It is realized by dividing the water tub 12 and placed under negative pressure. It contains several sieve guide strips 18.

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  • Paper (AREA)
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
DE19530983A DE19530983B4 (de) 1995-08-23 1995-08-23 Vorrichtung zum Herstellen eines mehrlagigen Papiers oder Kartons
DE19530983 1995-08-23

Publications (3)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1398412A1 (fr) * 2002-09-13 2004-03-17 Voith Paper Patent GmbH Procédé et section de formage à deux toiles pour la production d'une bande fibreuse
DE10303464A1 (de) * 2003-01-29 2004-09-30 Voith Paper Patent Gmbh Verfahren und Doppelsiebformer einer Maschine zur Herstellung einer Faserstoffbahn

Families Citing this family (10)

* 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
DE102007015638A1 (de) * 2007-03-31 2008-10-02 Voith Patent Gmbh Maschine zur Herstellung einer Tissuebahn, insbesondere Tissuemaschine
DE102008002280A1 (de) 2008-06-06 2009-12-10 Voith Patent Gmbh Verfahren zur Herstellung von Testliner und/oder Wellenstoff
DE102008002278A1 (de) 2008-06-06 2009-12-10 Voith Patent Gmbh Verfahren zur Herstellung von Testliner und/oder Wellenstoff

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH513288A (de) * 1969-12-12 1971-09-30 Beloit Corp Verfahren und Vorrichtung zur Herstellung einer Faserbahn
US3944464A (en) * 1974-05-10 1976-03-16 International Paper Company Forming section for twin-wire papermaking machine
FR2388936A1 (fr) * 1977-04-28 1978-11-24 Valmet Oy Procede de fabrication de carton a couches multiples et ensemble de formage de bande appliquant ce procede
DE3120073A1 (de) * 1981-04-27 1982-11-04 Escher Wyss Gmbh, 7980 Ravensburg Doppelsiebpapiermaschine
DE3226388A1 (de) * 1982-07-15 1984-01-26 Escher Wyss Gmbh, 7980 Ravensburg Papiermaschine
WO1995016070A1 (fr) * 1993-12-08 1995-06-15 Beloit Technologies, Inc. Machine et procede de fabrication de carton doublure multicouche a partir de deux feuilles

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
DE4402273C2 (de) * 1994-01-27 1995-11-23 Voith Gmbh J M Papiermaschine zur Herstellung mehrlagiger Papierbahnen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH513288A (de) * 1969-12-12 1971-09-30 Beloit Corp Verfahren und Vorrichtung zur Herstellung einer Faserbahn
US3944464A (en) * 1974-05-10 1976-03-16 International Paper Company Forming section for twin-wire papermaking machine
FR2388936A1 (fr) * 1977-04-28 1978-11-24 Valmet Oy Procede de fabrication de carton a couches multiples et ensemble de formage de bande appliquant ce procede
DE3120073A1 (de) * 1981-04-27 1982-11-04 Escher Wyss Gmbh, 7980 Ravensburg Doppelsiebpapiermaschine
DE3226388A1 (de) * 1982-07-15 1984-01-26 Escher Wyss Gmbh, 7980 Ravensburg Papiermaschine
WO1995016070A1 (fr) * 1993-12-08 1995-06-15 Beloit Technologies, Inc. Machine et procede de fabrication de carton doublure multicouche a partir de deux feuilles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1398412A1 (fr) * 2002-09-13 2004-03-17 Voith Paper Patent GmbH Procédé et section de formage à deux toiles pour la production d'une bande fibreuse
DE10303464A1 (de) * 2003-01-29 2004-09-30 Voith Paper Patent Gmbh Verfahren und Doppelsiebformer einer Maschine zur Herstellung einer Faserstoffbahn

Also Published As

Publication number Publication date
EP0761874A3 (fr) 1998-01-14
US5788816A (en) 1998-08-04
DE19530983A1 (de) 1997-02-27
EP0761874B1 (fr) 2001-06-13
DE19530983B4 (de) 2006-04-27

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