EP0681057B1 - Caisse de tête à plusieurs couches - Google Patents

Caisse de tête à plusieurs couches Download PDF

Info

Publication number
EP0681057B1
EP0681057B1 EP95106390A EP95106390A EP0681057B1 EP 0681057 B1 EP0681057 B1 EP 0681057B1 EP 95106390 A EP95106390 A EP 95106390A EP 95106390 A EP95106390 A EP 95106390A EP 0681057 B1 EP0681057 B1 EP 0681057B1
Authority
EP
European Patent Office
Prior art keywords
slat
flow
flowbox
turbulence
region
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
EP95106390A
Other languages
German (de)
English (en)
Other versions
EP0681057A2 (fr
EP0681057A3 (fr
Inventor
Helmut Heinzmann
Wolfgang Ruf
Ulrich Begemann
Thomas Dietz
Frank Fey
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 EP0681057A2 publication Critical patent/EP0681057A2/fr
Publication of EP0681057A3 publication Critical patent/EP0681057A3/fr
Application granted granted Critical
Publication of EP0681057B1 publication Critical patent/EP0681057B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • D21F1/028—Details of the nozzle section
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines
    • 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
    • D21F9/006—Complete machines for making continuous webs of paper of the twin-wire type paper or board consisting of two or more layers

Definitions

  • the invention relates to a multi-layer headbox as part of a Machine for producing a multilayer fibrous web, especially paper web.
  • a multi-layer headbox is used for independent loading of the individual nozzle spaces with material suspensions to produce a multi-layer paper web.
  • a lamella is provided between two adjacent nozzle spaces to avoid premature mixing of the different material suspensions until they are brought together outside the nozzle space.
  • Document (1) discloses a lamella in the form of an inherently rigid partition which has a pivot axis at its upstream end, on which an adjusting device engages.
  • Document (1) discloses a lamella in the form of an inherently rigid partition which has a pivot axis at its upstream end, on which an adjusting device engages.
  • This known construction is intended to enable material flows to be fed to the individual nozzle chambers at mutually independent speeds and pressures.
  • the outlet gaps of the individual nozzle chambers should be adjustable independently of one another.
  • the slats have the task of neighboring Separate material flows in a multi-layer headbox so that no mixing of the different currents come, until finally the currents in as undisturbed form as possible be united in a single flow, at the same time if possible no disturbances in this flow, e.g. by fluttering the Lamella (s) may occur.
  • the end of the Slats since this area is also very often the origin of Forms flow disturbances. To avoid these flow disorders different approaches have been taken.
  • Document (3) was in Document (3) proposed to design the slats so that a increased convergence in the exit area of the nozzle arises in order to thereby the increase in flow velocity in this area Achieve reduction in disturbances due to turbulence.
  • Document (5) shows a headbox of a machine for manufacturing a multilayer fibrous web, which is used for very different Volume flow relationships should enable. It is said by a Slidable joining point of the partition walls just bending of the partition walls can be prevented (page 6, paragraphs 2 and 3).
  • Document (6) shows a paper machine headbox with Partitions that have corrugated top and bottom surfaces and to Taper to the end. It should be avoided that this Discard partitions during manufacture or operation or warp (page 5, lines 18-28). However, the free end is supposed to come from one easily deformable material, but this has the disadvantage implies that it tends to vibrate. So it will be exactly one execution contrary to that of the present invention, since the present invention is the execution of the partition walls as flexible plate with one end that does not swing tends (page 4, lines 5-17).
  • Document (7) shows a headbox of a paper machine without large pressure loss should be inexpensive to operate. Furthermore, the Possibility are offered, targeted influence on the basis weight cross section and fiber cross section without being able to take to influence the other parameter. So it won't Problem of the quality of the paper web, especially with regard to the even coverage of multilayered webs treated.
  • the invention has for its object a multi-layer headbox to represent the high quality of the fibrous web to be produced ensures. High demands are placed on the uniform Coverage of the individual layers and the uniform cross profile of the Fiber web provided. It is important that the cross section both in terms of basis weight as well as in terms of fiber orientation can be set specifically.
  • the invention ensures through a design with flexible Slats that are also freely movable on an upstream, transverse to the Direction of flow lying axis are suspended, one automatically pressure equalization between the flow levels. Thereby is achieved that the flow velocities of the individual Align layers well with each other so that unwanted ones Turbulence at the borders can be largely avoided. Exactly same speeds can be achieved in that additional a sectioned suspension flow influence in at least one, preferably middle flow level is introduced. Through the the shear forces between the same speeds Layers almost eliminated and the coverage of the layers optimized. By means of the devices shown in the prior art, one can not achieve such high quality of the fibrous webs.
  • claim 1 becomes the main body (or main part) of the Slat formed as a flexible plate so that it does not tend to flutter and still freely between the can adjust two material flows.
  • claim 3 is the Lamella at its upstream end freely around a (across axis pivoting to the machine. Also in this case it can move freely between the two Adjust material flows. As a result, they may be the same pressure differences occurring between the two neighboring material flows, so that the Speeds of the two material flows as possible largely align with each other. This results in advantageous way that vortex formation, which their cause in a speed difference between the two Material flows, is avoided.
  • an aperture adjustment device also requires that the nozzle the headbox, especially when used in conjunction with twin wire formers, not close enough to the wire can be introduced, whereby an undesirably long, To accept unmanaged material jet is what is quality-reducing especially for multi-layer papers noticeable.
  • Nozzle end of the headbox is very simple, this also requires little effort in terms of production technology and also very much due to the elimination of the adjustment devices close to the sieve or between the sieves can be, which in turn has the advantage of being strong shortened, free stream of fabric is obtained. Farther there is also the possibility of the end area of the nozzle to optimize for the flow without on Adjustment options of the cover must be observed.
  • the proposed flexible slat can be firmly attached to a component at its upstream end the headbox. However, preference is given provided that the flexible slat can move freely an upstream, transverse to the flow direction hanging axis. Through this suspension ensures that due to the emerging Equalization the flow velocities of the even better align individual layers, whereby - after the neighboring layers meet - at least the unwanted turbulence at the borders is largely avoided.
  • the lamella is preferably made of a plastic manufactured.
  • the lamella is possible to assemble the lamella from a plastic base body and from a metallic lamella end, it being provided that the difference in the coefficients of thermal expansion is ⁇ 10 -7 1 / K. It is advantageous here that there are no tensions and bends in the lamella, in particular the end region of the lamella, at different temperatures, which would cause an uneven layer thickness transverse profile.
  • Figure 1 shows an inventive Three-layer headbox with feeders 1.1, 1.2 and 1.3 to the individual flow levels I, II and III.
  • This Feeders can either be through cross distributors or through a variety of individually adjustable material flows be fed.
  • a special economic one Design is when the middle layer II with Using a variety of mixing devices (similar to Figure 2) is supplied in a concentration-controlled manner, as a result of which Can easily adjust basis weight.
  • the material flows then arrive in an anteroom 2.1, 2.2 and 2.3, from which they generate turbulence Section 3 pass through microturbulence here creates the wall friction effect of a plurality of channels.
  • the individual arrive Material suspension flows, through slats 5.1 and 5.2 separated from each other in the nozzle 4 of the headbox.
  • the Slats are each on machine-wide axes 6.1 and 6.2 are articulated without torque and thus free themselves according to the flow conditions as described above on.
  • the lamellae either consist entirely of plastic or two materials, namely plastic for the base body and metal for the downstream lamella end 5a.
  • the plate is flexible, but does not tend to flutter in the flow.
  • the plastic preferably has an elastic modulus ⁇ 80,000 N / mm 2 ; the thickness of the plate is approximately on the order of 3 to 12 mm.
  • the end of the lamella has a thickness S of at most 0.3, preferably at most 0.1 to 0.2 mm. It can also be seen in the very schematic drawing here that the headbox nozzle, due to the lack of an aperture adjustment, comes very close between the dotted screen guide rollers 7.1, 7.2, as a result of which an extraordinarily short free material jet can be achieved.
  • FIG. 2 shows a two-layer headbox, together with a schematically represented pipe system for feeding various fiber suspensions.
  • the Nozzle 4 is limited by two in a known manner machine-wide power supply walls 4a and 4b. These are via a known turbulence generator 3 with a middle stationary partition 9 connected. At the outlet end of the partition 9 is again by means of a hinge 6 a slat 5 pivotally attached. Deviating from this, the lamella 5 can also be rigid on the Partition 9 be attached.
  • a first main stream, consisting of a first type of paper stock passes over a cross distribution line 11 and branched off from one of them Row of sectional feed lines 13 to one of the two turbulence generators 3.
  • Deviating from Figure 2 can in each of the sectional feed lines 13 Volume flow controllers are provided.
  • a second Main stream consisting of another Type of paper stock passes through a cross distribution line 12 and across a branched series of sectional ones Feed lines 14, 14 'to the other turbulence generator 3. So that, if necessary, the Basis weight cross-section of the paper web to be produced can be corrected is a third Cross distribution line 15 is provided for supplying a so-called secondary material flow. This consists e.g. out Dilution water or from the second type of paper, but with a different, preferably lower consistency.
  • Of the cross distribution line 15 are several sectional Feed lines 16 branched off with a control valve 17 each.
  • Each of the lines 16 thus carries a controllable one sectional side stream to a mixing point 18 where it is mixed with one of the sectional main material flows.
  • you will Line system 12-17 with the mixing points 18 preferably assign to the middle layer.
  • more Feed lines for individually controllable sectional Auxiliary streams could enter the sectional feed lines 13 open for the first main material flow.

Landscapes

  • Paper (AREA)
  • Magnetic Heads (AREA)
  • Production Of Multi-Layered Print Wiring Board (AREA)

Claims (11)

  1. Caisse de tête à plusieurs couches faisant partie d'une machine pour la production d'une bande de matière fibreuse à plusieurs couches, en particulier d'une bande de papier, avec les caractéristiques suivantes:
    1.1 il est prévu au moins deux plans d'écoulement (I, II, III) guidant une suspension de matière fibreuse, avec chacun au moins un dispositif d'alimentation (1.1, 1.2, 1.3) pour les suspensions de matière fibreuse;
    1.2 il est prévu pour chaque plan d'écoulement une section (3) avec des moyens pour produire une microturbulence dans l'écoulement de la suspension ("Générateur de turbulence");
    1.3 les générateurs de turbulence (3) débouchent dans une buse (4), qui présente une fente de sortie (8) ayant la largeur de la machine;
    1.4 dans la buse (4) se trouve au moins une lamelle (5; 5.1, 5.2), qui maintient séparés l'un de l'autre deux courants de suspension voisins jusque dans la région de la fente de sortie (8) ;
    caractérisée par les caractéristiques supplémentaires suivantes:
    1.5 la lamelle (5; 5.1, 5.2) est constituée par une plaque souple depuis la région du générateur de turbulence (3) jusque dans la région de la fente de sortie (8);
    1.6 l'extrémité aval de la lamelle (5; 5.1, 5.2) présente une épaisseur S de 0,3 mm au maximum;
    1.7 la région de la fente de sortie (8) est libre de dispositifs de réglage d'ouverture;
    1.8 au moins un plan d'écoulement (I, II, III), de préférence un plan d'écoulement central II, présente une régulation de la densité de matière par sections.
  2. Caisse de tête suivant la revendication 1, caractérisée en ce que chaque lamelle (5; 5.1, 5.2) est articulée à son extrémité amont de façon librement mobile autour d'un axe (6; 6.1, 6.2), qui s'étend sur la largeur de la machine, transversalement à la direction de l'écoulement.
  3. Caisse de tête à plusieurs couches faisant partie d'une machine pour la production d'une bande de matière fibreuse à plusieurs couches, en particulier d'une bande de papier, avec les caractéristiques suivantes:
    3.1 il est prévu au moins deux plans d'écoulement (I, II, III) guidant une suspension de matière fibreuse, avec chacun au moins un dispositif d'alimentation (1.1, 1.2, 1.3) pour les suspensions de matière fibreuse;
    3.2 il est prévu pour chaque plan d'écoulement une section (3) avec des moyens pour produire une microturbulence dans l'écoulement de la suspension ("Générateur de turbulence");
    3.3 les générateurs de turbulence (3) débouchent dans une buse (4), qui présente une fente de sortie (8) ayant la largeur de la machine;
    3.4 dans la buse (4) se trouve au moins une lamelle (5; 5.1, 5.2), qui maintient séparés l'un de l'autre deux courants de suspension voisins jusque dans la région de la fente de sortie (8);
    caractérisée par les caractéristiques supplémentaires suivantes:
    3.5 la lamelle (5; 5.1, 5.2) est articulée à son extrémité amont de façon librement mobile autour d'un axe (6; 6.1, 6.2), qui s'étend sur la largeur de la machine, transversalement à la direction de l'écoulement;
    3.6 l'extrémité aval de la lamelle (5; 5.1, 5.2) présente une épaisseur S de 0,3 mm au maximum;
    3.7 la région de la fente de sortie (8) est libre de dispositifs de réglage d'ouverture;
    3.8 au moins un plan d'écoulement (I, II, III), de préférence un plan d'écoulement central II, présente une régulation de la densité de matière par sections.
  4. Caisse de tète suivant la revendication 3, caractérisée en ce que chaque lamelle (5; 5.1, 5.2) est constituée par une plaque souple depuis la région du générateur de turbulence (3) jusque dans la région de la fente de sortie (8).
  5. Caisse de tête suivant l'une quelconque des revendications 1 à 4, caractérisée en ce que l'extrémité aval de la lamelle (5; 5.1, 5.2) présente une épaisseur S de 0,1 à 0,2 mm au maximum.
  6. Caisse de tête suivant l'une quelconque des revendications 1 à 5, caractérisée en ce que le générateur de turbulence (3) d'au moins un plan d'écoulement (I, II, III) se compose d'une pluralité de canaux ou de tubes orientés dans la direction de l'écoulement et répartis sur toute la largeur de la machine.
  7. Caisse de tête suivant l'une quelconque des revendications 1 à 3, caractérisée en ce que la régulation de la densité de matière par sections est obtenue par les caractéristiques suivantes:
    7.1 il est prévu une pluralité de conduites d'alimentation de suspension de matière (14, 14') pour au moins un plan d'écoulement (II);
    7.2 il est prévu des mélangeurs (18) dans les conduites d'alimentation de suspension de matière, les mélangeurs présentant les caractéristiques suivantes:
    7.3 chaque mélangeur (18) possède au moins deux accès (14, 16) et une sortie (14');
    7.4 au moins chaque fois un des accès (16) des mélangeurs (18) comporte des moyens (17) de régulation du débit;
    7.5 les courants partiels fournis (conduites 12, 15) de chaque mélangeur (18) présentent des propriétés différentes.
  8. Caisse de tête suivant la revendication 7, caractérisée en ce qu'il est prévu une pluralité de conduites d'alimentation de suspension de matière (13) réparties sur la largeur de la machine dans au moins un plan d'écoulement (I) libre de régulation de densité de matière.
  9. Caisse de tête suivant l'une quelconque des revendications 1 à 8, caractérisée en ce que chaque lamelle (5; 5.1, 5.2) est fabriquée en une matière plastique.
  10. Caisse de tête suivant la revendication 9, caractérisée en ce que chaque lamelle (5; 5.1, 5.2) se compose d'un corps de base en matière plastique et d'une extrémité métallique aval (5a), la différence des coefficients de dilatation thermique étant inférieure à 10-7 1/K.
  11. Caisse de tête suivant la revendication 9 ou 10, caractérisée en ce que le module E de la matière plastique est inférieur à 80.000 N/mm2.
EP95106390A 1994-04-29 1995-04-27 Caisse de tête à plusieurs couches Expired - Lifetime EP0681057B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4415053 1994-04-29
DE4415053 1994-04-29

Publications (3)

Publication Number Publication Date
EP0681057A2 EP0681057A2 (fr) 1995-11-08
EP0681057A3 EP0681057A3 (fr) 1997-04-16
EP0681057B1 true EP0681057B1 (fr) 2002-08-28

Family

ID=6516813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95106390A Expired - Lifetime EP0681057B1 (fr) 1994-04-29 1995-04-27 Caisse de tête à plusieurs couches

Country Status (4)

Country Link
US (1) US5849159A (fr)
EP (1) EP0681057B1 (fr)
AT (1) ATE222971T1 (fr)
DE (1) DE59510338D1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6425984B2 (en) * 1995-10-20 2002-07-30 Institute Of Paper Science And Technology, Inc. Layered fiber structure in paper products
FI115646B (fi) * 1996-11-26 2005-06-15 Metso Paper Inc Paperikoneen/kartonkikoneen monikerrosperälaatikko
CA2325990C (fr) * 1997-05-12 2007-09-18 Beloit Technologies, Inc. Dispositif a element trainant
SE510341C2 (sv) 1997-08-19 1999-05-17 Sca Research Ab Metod och anordning för formning av en flerskiktsbana
AT406171B (de) * 1998-02-05 2000-03-27 Andritz Patentverwaltung Vorrichtung zur zufuhr einer faserstoffsuspension auf eine entwässerungseinrichtung
DE19962709A1 (de) * 1999-12-23 2001-06-28 Voith Paper Patent Gmbh Stoffauflauf
DE10051802A1 (de) 2000-10-18 2002-04-25 Voith Paper Patent Gmbh Lamelle eines Stoffauflaufs einer Papier-, Karton- oder Tissuemaschine
DE10122047A1 (de) * 2001-05-07 2002-11-14 Voith Paper Patent Gmbh Blattbildungsvorrichtung und -verfahren
US7435369B2 (en) * 2001-06-06 2008-10-14 Bpb Plc Method for targeted delivery of additives to varying layers in gypsum panels
TW593838B (en) * 2001-06-11 2004-06-21 Sca Hygiene Prod Ab A patterned paper and a method for manufacturing such
DE102008000564A1 (de) 2008-03-07 2009-09-10 Voith Patent Gmbh Vorrichtung zur Herstellung und/oder Behandlung einer Faserstoffbahn
DE202009013111U1 (de) 2009-09-30 2010-01-07 Voith Patent Gmbh Trennelement für einen Stoffauflauf einer Maschine zur Herstellung einer Faserstoffbahn
EP3735487A1 (fr) 2018-01-05 2020-11-11 International Paper Company Produits papetiers ayant une rigidité en flexion et une résistance en sens travers accrues et leurs procédés de fabrication
DE102018120162A1 (de) * 2018-08-20 2019-10-10 Voith Patent Gmbh Stoffauflauf
KR102534119B1 (ko) * 2020-03-31 2023-05-17 킴벌리-클라크 월드와이드, 인크. 구역화된 및/또는 층상 기판 제조 방법 및 장치

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI58364C (fi) * 1977-07-13 1981-01-12 Tampella Oy Ab Matningsanordning foer en banformningsmaskin foer framstaellning av en tvao- eller flerskiktig fiberbana
AT361772B (de) * 1977-12-13 1981-03-25 Escher Wyss Gmbh Stoffauflauf fuer papiermaschinen
SE421328B (sv) * 1978-04-25 1981-12-14 Karlstad Mekaniska Ab Forfarande och anordning for bildande av en flerskiktsmeldstrale
FI69664C (fi) * 1980-04-11 1986-03-10 Valmet Oy Inloppslaoda foer en pappersmaskin
AT377026B (de) * 1980-12-19 1985-01-25 Escher Wyss Gmbh Stoffauflauf fuer eine papiermaschine
AT378793B (de) * 1981-05-14 1985-09-25 Escher Wyss Gmbh Stoffauflaufvorrichtung fuer papiermaschinen
CA1230251A (fr) * 1983-11-25 1987-12-15 Jose J. A. Rodal Regulateur flottant de debit sur caisse de tete
US4566945A (en) * 1984-04-11 1986-01-28 Beloit Corporation Headbox trailing element
DE3502885A1 (de) * 1985-01-29 1986-07-31 Mitsubishi Jukogyo K.K., Tokio/Tokyo Papiermaschinen-stoffauflauf
US4604164A (en) * 1985-01-30 1986-08-05 Mitsubishi Jukogyo Kabushiki Kaisha Flow restraining elements in the headbox of a paper machine
CH672515A5 (fr) * 1987-02-02 1989-11-30 Escher Wyss Gmbh
FR2631353A1 (fr) * 1988-05-13 1989-11-17 Semti Dispositif d'alimentation en melange pateux
US4941950A (en) * 1989-07-26 1990-07-17 Beloit Corporation Headbox with grooved trailing element
US5013406A (en) * 1989-11-09 1991-05-07 Beloit Corporation Trailing element device for a headbox
DE4019593C2 (de) * 1990-06-20 1994-01-20 Voith Gmbh J M Stoffauflauf für Papiermaschinen
DE4225297C2 (de) * 1992-07-31 1996-11-28 Voith Sulzer Papiermasch Gmbh Stoffauflauf für eine Papiermaschine
DE4323263C2 (de) * 1993-07-12 2001-11-29 Voith Paper Patent Gmbh Verfahren zur sektionalen Beeinflussung der Stoffdichte und der Faserorientierung in einem Stoffauflauf einer Papiermaschine und Stoffauflauf zur Durchführung des Verfahrens
DE4440079C2 (de) * 1994-11-10 1997-10-02 Voith Sulzer Papiermasch Gmbh Mehrschichten-Stoffauflauf

Also Published As

Publication number Publication date
EP0681057A2 (fr) 1995-11-08
US5849159A (en) 1998-12-15
DE59510338D1 (de) 2002-10-02
EP0681057A3 (fr) 1997-04-16
ATE222971T1 (de) 2002-09-15

Similar Documents

Publication Publication Date Title
EP0681057B1 (fr) Caisse de tête à plusieurs couches
DE3741603C2 (fr)
EP0824157B1 (fr) Caisse de tête et procédé pour la répartition d'une suspension fibreuse dans la caisse de tête d'une machine à papier
DE2857473C2 (fr)
EP0711869A2 (fr) Caisse de tête à plusieurs couches
EP2379801B1 (fr) Système de mise en bande destiné à une machine de production d'une bande de matière fibreuse multicouche
DE4005281C2 (de) Stoffauflauf mit Regelung des Flächengewicht-Querprofiles über die Verdünnung der Fasersuspension
DE4031038A1 (de) Vorrichtung zum herstellen eines mehrlagigen papiers oder kartons
WO2010069651A1 (fr) Caisson de tête pour machine de fabrication d'une bande de matière fibreuse
DE4321268C2 (de) Stoffauflauf und Verfahren zur Erzeugung einer mehrschichtigen und mehrlagigen Papierbahn
EP1236828B1 (fr) Caisse d'arrivée pour machine à papier, carton ou tissu
WO2010069652A1 (fr) Caisson de tête pour machine de fabrication d'une bande de matière fibreuse
DE60219947T2 (de) Verfahren zur herstellung einer faserstoffbahn und maschine dafür
EP0581051A1 (fr) Caisse de tête à plusieurs couches pour une machine à papier ou analogue
EP0592651A1 (fr) Agencement de caisse de tete pour machines a papier
EP2106478A1 (fr) Arrivée de pâte d'une machine destinée à fabriquer une bande de matière fibreuse
DE10234559A1 (de) Blattbildungssystem
EP1365067A1 (fr) Section de formage
DE3128156A1 (de) Siebpartie einer papiermaschine
DE3309264C2 (de) Stoffauflauf
DE2800547B2 (de) Stoffauflauf für Papiermaschinen
DE4423695C2 (de) Verfahren zur Herstellung einer Papier- oder Kartonbahn
DE3639823C2 (fr)
EP1489224A1 (fr) Caisse de tête
EP0936302B1 (fr) Appareil pour l' alimentation d' une suspension de fibres sur un dispositif d' essorage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT CH DE ES FR GB IT LI SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH DE ES FR GB IT LI SE

17P Request for examination filed

Effective date: 19970927

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VOITH SULZER PAPIERTECHNIK PATENT GMBH

17Q First examination report despatched

Effective date: 20000328

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VOITH PAPER PATENT GMBH

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE ES FR GB IT LI SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020828

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020828

REF Corresponds to:

Ref document number: 222971

Country of ref document: AT

Date of ref document: 20020915

Kind code of ref document: T

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59510338

Country of ref document: DE

Date of ref document: 20021002

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20020828

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030430

EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030530

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20070412

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20070413

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20070423

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20070627

Year of fee payment: 13

EUG Se: european patent has lapsed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080427

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080427

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080428