EP0772711B1 - Caisse de tete pour machine a papier - Google Patents

Caisse de tete pour machine a papier Download PDF

Info

Publication number
EP0772711B1
EP0772711B1 EP96919855A EP96919855A EP0772711B1 EP 0772711 B1 EP0772711 B1 EP 0772711B1 EP 96919855 A EP96919855 A EP 96919855A EP 96919855 A EP96919855 A EP 96919855A EP 0772711 B1 EP0772711 B1 EP 0772711B1
Authority
EP
European Patent Office
Prior art keywords
headbox
backplate
partitions
chamber
headbox according
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
EP96919855A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0772711A1 (fr
Inventor
Jean-Pierre Jourdain
Gérard PIONCHON
Jean-Claude Roux
Martine Rueff
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.)
Allimand
Original Assignee
Allimand
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9478782&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0772711(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Allimand filed Critical Allimand
Publication of EP0772711A1 publication Critical patent/EP0772711A1/fr
Application granted granted Critical
Publication of EP0772711B1 publication Critical patent/EP0772711B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • 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
    • D21F1/026—Details of the turbulence section

Definitions

  • the present invention relates to the field of stationery and, more particularly to the continuous production of a sheet of paper from a fiber paste diluted in an aqueous support and completed by the incorporation current known adjuvants.
  • the fibrous solution in a compartment called headbox which has the function of feeding a nozzle opening via two narrowly spaced lips above a carpet transporter whose primary function is to ensure the drainage of the solution for start the process of forming a sheet, the second function of which is to transport this sheet towards the successive assemblies constituting a continuous paper production machine.
  • Such technology is widely known, as are the requirements that sets up a headbox which can be supplied via a distributor rear communicating with the body itself via a plate with holes in.
  • the generation of turbulence in the fibrous solution is considered to be necessary to maintain good homogenization and good distribution prior to a tranquilization of this solution upstream of the distribution-distribution nozzle on the conveyor belt.
  • This technology involves feeding the headbox, from an installation for supplying the aqueous solution which is supplied by via supply tubes or pipes at the rear of the headbox where these tubes or pipes are connected to pipes established parallel to each other to others.
  • This technique can perhaps improve the control of local intake, by compared to a conventional dispatcher, but is not sufficient to provide a solution to the problem.
  • the object of the invention is to propose structural improvements and functional to a headbox equipped with a feeding system according to the proposal recalled above.
  • the improvements according to this addition aim to achieve more effectively controlling the homogeneous distribution of the fibrous solution inside of the headbox, so that a density adjustment, taking into account certain privileged veins establishing themselves naturally, can be controlled by through an adaptation of upstream dilution, without involving any adjustment of the passage section of the feed nozzle, with the various hazards that this the latter is born and, among these, the unwanted local orientation of the fibers.
  • Another object of the invention is to provide technical means for improvement which can be easily implemented in a structure of headbox of traditional construction, without requiring, once installed, precise, frequent and essential adjustment requirements, all requirements which are contrary to a continuous manufacturing process, as is the case in this for producing a sheet of paper.
  • Another object of the invention is to propose means of a static nature which, once established, therefore do not experience any change in their position relative or their adjustment, to the point of requiring monitoring and maintenance also contrary to a continuous manufacturing process.
  • Another advantage of the invention is to propose means of which, in addition, allow easy access and fast to the components of a headbox, to the point of allowing, when the requirement is essential, rapid cleaning, without involving long disassembly and complicated.
  • Figure 1 is a partial schematic view of a headbox of a continuous production machine for a sheet of paper.
  • Figure 2 is a perspective section taken along the plane II-II of Figure 1 .
  • Figure 1 partially shows the upstream part of a machine 1 for continuously producing a sheet of paper.
  • a machine comprises a frame 2 or the like supporting the various functional sub-assemblies, the only two of which located upstream are, in part, illustrated. These two assemblies concern the supply installation 3 and the conveyor-drainer belt 4 , the function of which will be recalled below.
  • the installation 3 comprises a head box 5 mounted in any suitable manner on the frame 2 and having an outlet constituted by a nozzle 6 defined by two lips 7 and 8 which delimit between them a passage section 9 responsible for discharging onto the carpet 4 the fibrous solution intended to subsequently form the sheet.
  • Section 9 is located above the upper strand 10 of the belt 4 which is mounted between cylinders or rollers 11 , at least one of which is motorized, so that the upper strand is driven in scrolling in the direction of the arrow f 1 .
  • the upper strand 10 is associated, in a lower plane, with an equipment 12 responsible for assuming a function of recovery of the draining maintained from the upper strand 10 and of recirculation of the recovered liquid fraction.
  • the head box 5 is of the type supplied by an assembly 13 comprising a balloon 14 supplying the fibrous solution to n pipes or tubes 15 which are directly connected by suitable tubing to a rear plate 16 constituting the box 5 .
  • Such adjustment means induces, due to the variation in section of the opening 9 , a pre-orientation of the fibers included in the solution and an irregular distribution which is not such as to favor obtaining a sheet. of consistent quality.
  • the improvements recommended by the present invention aim to modify structurally and functionally such a chamber, so as to meet the generally raised problem, as stated previously.
  • the headbox 5 comprises a plate 16 which is provided, from place to place, with pipes 20 to which the various supply tubes or pipes 15 are connected, each associated with a dilution line 21 controlled by a valve 22 .
  • the pipe 21 is connected upstream to a source for supplying a liquid fluid for diluting the fibrous suspension supplied by the pipe 15 .
  • the head box 5 is produced in the form of a box and comprises a bottom wall 23 and a top wall 24 which are linked to the plate 16 and secured by a flange 25 with at least one generator.
  • Two longitudinal walls, not shown, are provided for laterally closing the internal useful volume thus delimited, designated as a whole by the reference 30 and which can be qualified as an explosion chamber.
  • the generator 26 is constituted by a plate having passages 31 judiciously distributed to create supply streams for the nozzle 6 .
  • the plate 16 it is envisaged to produce the plate 16 so that it has, for each tube 20 , a passage 35 in the form of a divergence, the large base of which faces the chamber 30 .
  • the diverging part 35 has the function of constituting a transition zone gradually bringing the fibrous solution supplied by the tube 15 to occupy, in cross section, an increased volume favoring a progressive expansion between the section of the tube 15 and the chamber 30 .
  • the angle of divergence of the passages 35 is advantageously between 1 and 10 °.
  • the chamber 30 is internally subdivided by fixed partitions 36 which are established parallel to each other, so as to define as many channels 37 as there are divergent passages 35 , so that 'to each of them corresponds a channel 37 .
  • the number of partitions 36 is equal to the number of divergent passages 35 minus 1.
  • the partitions 36 are in contact with the plate 16 and are secured to the opposite faces of the bottom wall 23 and of the top 24 .
  • the partitions each have a length d ' which is less than the length d of the explosion chamber 30 between the faces facing the plate 16 and the generator 26 .
  • the length d is equal to the formula KD in which K is between 4 and 10 and D corresponds to the hydraulic diameter.
  • the difference in length between the partitions and the chamber can be understood between 5 and 100 mm.
  • a headbox, made as described above, provides the effects following.
  • the pulp or fibrous solution supplied by the tube 15 , experiences a non-sudden expansion favoring its entry into the corresponding channel 37 which allows to channel its progression according to a regime not immediately vortex, during all the progression guided by the partitions 36 .
  • the solution exceeds the free edge of the partitions, it ends up in the common part where the different veins corresponding to the different channels 37 partially mix in their lateral zones before being subjected to a homogenization division by means of the generator. turbulence 26 .
  • the nozzle 6 is thus certainly supplied continuously, but with the presence of more or less marked longitudinal veins, due to the presence of channels 37 which channel the progression of each vein during most of the passage through the chamber 30 and allow a relative transverse dilution during the progression on the common part of the chamber 30 preceding the turbulence generator 26 .
  • upstream control can be efficiently and precisely maintained by means of the settings of the valves 22 which provide a precise dilution rate for each vein and therefore make it possible to maintain such a rate despite the homogenization in the part common of the chamber 30 , in order to supply the nozzle 6 in the most adequate manner so that the distribution profile corresponds to the desired transverse density and to the desired orientation of the fibers on the mat 4 shown in FIG. 1 .
  • the explosion chamber 30 in the form of an independent box formed by the plate 16 and the walls 23 and 24 , as well as possibly the longitudinal walls, and to give this casing a character of relative mobility for example, in an alternative rectilinear direction shown by the arrow f 2 to favor the cleaning operations.
  • the relative movement can be maintained by any motorization means and makes it possible to move the box away from or closer to the generator 26 , when it is necessary to have access to the interior of the chamber 30 and of the channels 37 .
  • each partition 36 has a straight transverse edge 38 extending perpendicularly between the faces of the walls 23 and 24 . It could be chosen to make the partitions 36 with a straight inclined or even indented edge, as shown in dashed lines and designated by the reference 38a .
  • connection between the box and the generator 26 can be achieved by any suitable means, in particular by means of the flange 25 , by making use of the presence of seals not shown in the drawings.
  • a variant of mobility consists in mounting the box constituting the headbox by means of lugs or the like 40 on an axis 41 parallel to the plane of the generator 26 and carried by one or more yokes 42 presented, formed or adapted on the frame 2 or on a box making it opposite with respect to the chamber 30 .
  • a motorization of any suitable shape can be adapted to rotate the box in one or the other direction of the arrow f 3 along a circular path allowing the head box to be opened relative to the generator 26 , in order to facilitate the maintenance operations, as mentioned above.
  • any motorization mode can be provided and adapted according to the knowledge of a person skilled in the art to assume such a function, as well as, in the case of mobility according to the arrow f 2 , means for guiding the box can be provided between the latter and the frame 2 or the box opposite.

Landscapes

  • Paper (AREA)
  • Making Paper Articles (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Toys (AREA)
EP96919855A 1995-05-02 1996-05-02 Caisse de tete pour machine a papier Revoked EP0772711B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9505449 1995-05-02
FR9505449A FR2733773B1 (fr) 1995-05-02 1995-05-02 Caisse de tete pour machine a papier
PCT/FR1996/000667 WO1996035017A1 (fr) 1995-05-02 1996-05-02 Caisse de tete pour machine a papier

Publications (2)

Publication Number Publication Date
EP0772711A1 EP0772711A1 (fr) 1997-05-14
EP0772711B1 true EP0772711B1 (fr) 1999-09-08

Family

ID=9478782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96919855A Revoked EP0772711B1 (fr) 1995-05-02 1996-05-02 Caisse de tete pour machine a papier

Country Status (12)

Country Link
US (1) US5985099A (es)
EP (1) EP0772711B1 (es)
JP (1) JP3219097B2 (es)
KR (1) KR100453787B1 (es)
AT (1) ATE184337T1 (es)
BR (1) BR9606350A (es)
CA (1) CA2194249C (es)
DE (1) DE69604146T2 (es)
ES (1) ES2137708T3 (es)
FR (1) FR2733773B1 (es)
PL (1) PL180008B1 (es)
WO (1) WO1996035017A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10331040A1 (de) * 2003-07-09 2005-01-27 Voith Paper Patent Gmbh Stoffauflauf

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005027354A1 (de) * 2005-06-13 2006-12-14 Voith Patent Gmbh Stoffauflauf für eine Maschine zur Herstellung einer Faserstoffbahn, insbesondere einer Papier- oder Kartonbahn

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO119299B (es) * 1962-04-12 1970-04-27 Karlstad Mekaniska Ab
US3400044A (en) * 1965-05-27 1968-09-03 Beloit Corp Headbox flow control apparatus
FI61737C (fi) * 1980-12-17 1982-09-10 Valmet Oy Reglerbar inloppslaoda foer pappersmaskin
US4534399A (en) * 1984-06-27 1985-08-13 Crown Zellerbach Corporation Paper stock diffuser system
DE3628699A1 (de) * 1986-08-23 1988-03-03 Voith Gmbh J M Stoffauflauf
US4980027A (en) * 1990-06-04 1990-12-25 Sandy Hill Corporation Vari-flow headbox with large and small flow inlet systems
DE4019593C2 (de) * 1990-06-20 1994-01-20 Voith Gmbh J M Stoffauflauf für Papiermaschinen
US5707495A (en) * 1990-06-20 1998-01-13 J.M. Voith Gmbh Headbox for papermaking machine with more uniform flow
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
DE9416731U1 (de) * 1994-10-18 1995-01-12 Sulzer-Escher Wyss Gmbh, 88212 Ravensburg Stoffauflauf für eine Papiermaschine
DE4437180C2 (de) * 1994-10-18 1997-03-20 Voith Sulzer Papiermasch Gmbh Verfahren zur Herstellung eines Stoffauflaufes und Zwischenteil eines Stoffaufllaufes einer Papier- oder Kartonmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10331040A1 (de) * 2003-07-09 2005-01-27 Voith Paper Patent Gmbh Stoffauflauf

Also Published As

Publication number Publication date
CA2194249C (fr) 2004-08-10
DE69604146D1 (de) 1999-10-14
FR2733773B1 (fr) 1997-08-01
FR2733773A1 (fr) 1996-11-08
PL317944A1 (en) 1997-05-12
JP3219097B2 (ja) 2001-10-15
EP0772711A1 (fr) 1997-05-14
ES2137708T3 (es) 1999-12-16
US5985099A (en) 1999-11-16
CA2194249A1 (fr) 1996-11-07
BR9606350A (pt) 1998-07-14
KR970704935A (ko) 1997-09-06
KR100453787B1 (ko) 2004-12-30
JPH10502979A (ja) 1998-03-17
WO1996035017A1 (fr) 1996-11-07
PL180008B1 (en) 2000-11-30
DE69604146T2 (de) 2000-04-27
ATE184337T1 (de) 1999-09-15

Similar Documents

Publication Publication Date Title
CA1327471C (fr) Dispositif d'alimentation en melange pateux
FR2628518A1 (fr) Procede pour le sechage d'une nappe de matiere et dispositif pour la mise en oeuvre de ce procede
FR2529476A1 (fr) Cellule de flottation
EP0772711B1 (fr) Caisse de tete pour machine a papier
FR2595382A1 (fr) Caisse de tete pour la fabrication de feuilles continues de matiere fibreuse
FR2500861A1 (fr) Procede de formation d'une feuille continue a plusieurs jets dans une machine a deux toiles et machines a deux toiles pour l'execution de ce procede
EP1025309B1 (fr) Installation de depoussierage sur machine de production de papier crepe
EP0061412B1 (fr) Procédé et dispositif pour fabriquer des bandes de mousse de polymères
FR2476164A1 (fr) Cellule de flottaison tubulaire
EP0178281A2 (fr) Installation pour le refroidissement d'un produit métallique en mouvement
FR2585591A1 (fr) Procede et dispositif pour l'application en continu d'une enduction reguliere sur une nappe de materiau passant sur un cylindre de contre-partie, en particulier une nappe de papier ou de carton
EP1190132A1 (fr) Dispositif pour le traitement de materiaux en feuille au moyen de jets d'eau sous pression
FR2503205A1 (fr) Systeme et procedes pour l'alimentation de filieres multiples d'extrusion de pates pour machines a papier
FR2524513A1 (fr) Caisse a pate pour machine de fabrication de papier
FR2496139A1 (fr) Boite d'arrivee de pate reglable pour machine a papier
BE1006222A3 (fr) Dispositif de fabrication d'un feutre de fibres.
FR2730941A1 (fr) Cellule pour le traitement par flottation d'un milieu liquide
FR2726288A1 (fr) Dispositif a lame d'air pour le reglage de l'epaisseur d'un depot
EP0233854B1 (fr) Dispositif de refroidissement d'un produit métallique en mouvement
EP0083543A1 (fr) Procédé et dispositif pour la formation de voiles de fibres
FR2750224A1 (fr) Dispositif de formation d'un ecran d'eau susceptible de constituer un ecran de projection d'images
CH633693A5 (fr) Installation de plastification pour le traitement d'un cable de fibres.
US10119286B2 (en) Wave propagation apparatus
FR2761636A1 (fr) Machine de formation de rainures de pliage
FR2541438A1 (fr) Lame a impulsion positive pour le pre-conditionnement d'une bande humide de matiere transportee par une toile dans une machine de deshydratation

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

17P Request for examination filed

Effective date: 19961202

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19981106

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 BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

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

Ref country code: GR

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

Effective date: 19990908

REF Corresponds to:

Ref document number: 184337

Country of ref document: AT

Date of ref document: 19990915

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69604146

Country of ref document: DE

Date of ref document: 19991014

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: FRENCH

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

Ref country code: DK

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: 19991208

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

Ref country code: PT

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: 19991209

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2137708

Country of ref document: ES

Kind code of ref document: T3

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

Ref country code: LU

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

Effective date: 20000502

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: 20000531

Ref country code: CH

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

Effective date: 20000531

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: VOITH SULZER PAPIERTECHNIK PATENT GMBH

Effective date: 20000525

26 Opposition filed

Opponent name: VALMET-KARLSTAD AB

Effective date: 20000607

Opponent name: VOITH SULZER PAPIERTECHNIK PATENT GMBH

Effective date: 20000525

NLR1 Nl: opposition has been filed with the epo

Opponent name: VALMET-KARLSTAD AB

Opponent name: VOITH SULZER PAPIERTECHNIK PATENT GMBH

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

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

Ref country code: MC

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

Effective date: 20001130

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

R26 Opposition filed (corrected)

Opponent name: VOITH PAPER PATENT GMBH * 20000607 VALMET-KARLSTAD

Effective date: 20000525

NLR1 Nl: opposition has been filed with the epo

Opponent name: VALMET-KARLSTAD AB

Opponent name: VOITH PAPER PATENT GMBH

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PLBO Opposition rejected

Free format text: ORIGINAL CODE: EPIDOS REJO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

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

Ref country code: ES

Payment date: 20030514

Year of fee payment: 8

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

Ref country code: SE

Payment date: 20040419

Year of fee payment: 9

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

Ref country code: AT

Payment date: 20040420

Year of fee payment: 9

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

Ref country code: GB

Payment date: 20040427

Year of fee payment: 9

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

Ref country code: NL

Payment date: 20040429

Year of fee payment: 9

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

Ref country code: DE

Payment date: 20040506

Year of fee payment: 9

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

Ref country code: FI

Payment date: 20040518

Year of fee payment: 9

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

Ref country code: IE

Payment date: 20040525

Year of fee payment: 9

Ref country code: FR

Payment date: 20040525

Year of fee payment: 9

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

Ref country code: BE

Payment date: 20040608

Year of fee payment: 9

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

R26 Opposition filed (corrected)

Opponent name: METSO PAPER KARLSTAD AKTIEBOLAG

Effective date: 20000607

Opponent name: VOITH PAPER PATENT GMBH

Effective date: 20000525

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

NLR1 Nl: opposition has been filed with the epo

Opponent name: METSO PAPER KARLSTAD AKTIEBOLAG

Opponent name: VOITH PAPER PATENT GMBH

APAA Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOS REFN

RDAF Communication despatched that patent is revoked

Free format text: ORIGINAL CODE: EPIDOSNREV1

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

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

Free format text: STATUS: PATENT REVOKED

27W Patent revoked

Effective date: 20041216

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state

Free format text: 20041216

NLR2 Nl: decision of opposition

Effective date: 20041216

REG Reference to a national code

Ref country code: SE

Ref legal event code: ECNC

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO