EP0309530B1 - Maschine zur herstellung von faserstoffbahnen - Google Patents

Maschine zur herstellung von faserstoffbahnen Download PDF

Info

Publication number
EP0309530B1
EP0309530B1 EP88903245A EP88903245A EP0309530B1 EP 0309530 B1 EP0309530 B1 EP 0309530B1 EP 88903245 A EP88903245 A EP 88903245A EP 88903245 A EP88903245 A EP 88903245A EP 0309530 B1 EP0309530 B1 EP 0309530B1
Authority
EP
European Patent Office
Prior art keywords
press
nip
roll
extended
flexible
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
EP88903245A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0309530A1 (de
Inventor
Christian Schiel
Udo Grossmann
Karl Steiner
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.)
JM Voith GmbH
Original Assignee
JM Voith 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6325640&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0309530(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by JM Voith GmbH filed Critical JM Voith GmbH
Priority to AT88903245T priority Critical patent/ATE68540T1/de
Publication of EP0309530A1 publication Critical patent/EP0309530A1/de
Application granted granted Critical
Publication of EP0309530B1 publication Critical patent/EP0309530B1/de
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
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/04—Arrangements thereof
    • D21F3/045—Arrangements thereof including at least one extended press nip
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/04—Arrangements thereof

Definitions

  • the invention relates to a machine for producing fibrous webs, preferably paper webs, with a wire section and with a press section, in particular with the features specified in the preamble of claim 1.
  • the invention then proceeds from FIG. 1 of DE-A-36 04 522.
  • the press section of this known machine has two so-called long-gap presses.
  • the advantages of such long-nip presses are known: the press nip is flat, not essentially linear, as in the case of conventional roller presses. This has the consequence that the pressure (to be exerted on the fibrous web to be dewatered) in the press nip does not start suddenly in the running direction, but can be brought continuously from a low value to a high value.
  • the two long-nip presses follow directly on the wire section. Furthermore, starting from the wire section, the web to be dewatered runs essentially rectilinearly tangentially to a run-up point located on the upper ascending quadrant of the circumference of the first press roll (and thus lying in front of the first press nip).
  • the press rolls can be designed as deflection-setting rolls with a liquid-tight roll casing, the roll casing having a plurality of recesses for the temporary storage of squeezed water.
  • the press roll is arranged below the flexible press element, in the second long nip press, on the other hand, above the flexible press element.
  • the fibrous web passes through the two press nips essentially in the vertical direction, the first press nip from bottom to top and the second press nip from top to bottom.
  • the direction of action of the two press shoes is thus horizontal.
  • a disadvantage of this arrangement is that, due to gravity, vertical forces of different sizes are exerted on the press rolls and on the press shoes. The direction of these forces therefore runs transversely to the press plane connecting the axes of rotation of the two press rolls.
  • the paper web W runs in this known arrangement between two felt belts 76 and 77 first through the first press nip and then, further between the two felt belts, up to a guide roller 78. From there, the paper web runs alone with the lower felt belt 77 through the second press nip , after which it separates from the felt belt 77.
  • This arrangement has the disadvantage, among other things, that the paper web, after the first press nip, again absorbs a lot of moisture from the felt belts (rewetting), so that the dewatering capacity is unsatisfactory despite two series-connected press nips.
  • the flexible press element can be designed as a press hose closed on the end face, so that no lubricant can penetrate to the outside.
  • the press plane there is also arranged horizontally or inclined at approximately 45 degrees.
  • disruptive transverse forces occur. Since there is only a single flat press nip, the drainage capacity should also not be sufficient for many applications.
  • the invention has for its object to design a generic machine for the production of fibrous webs in such a way that the dewatering capacity of the press section is considerably increased and that the above-mentioned disturbing transverse forces that occur in some known arrangements are avoided.
  • the press roll equipped with recesses for temporarily storing water is able to transport the water that has penetrated into the recesses through the lower felt without further involvement of the felt in a downward direction. It is important in this context that the water transported downwards by the press roll does not drip into the returning felt, but instead reaches a catchment device below the press roll, so that it can run off to the side.
  • the lower felt also transports a certain amount of water, which is removed from it there. It is essential, however, that the proportion of water that can be discharged to the outside via the recesses in the press roll jacket is considerably greater when the press roll is at the bottom - thanks to the initial transport direction downwards - than when the press roll is at the top. As a result, the total amount of water withdrawn from the fibrous web in the first long-nip press is above average.
  • Forming the press nips with the press shoes already mentioned increases the importance of the feature already mentioned that the run-up point of the web on the circumference of the first press roll in one certain distance, which can be quite small, before entering the press nip. Because in this way the paper web or possibly the upper felt band running around the flexible press element only comes into contact with the press hose at the press nip inlet (and not before). This is important because when using a press shoe it is usually inevitable that the press hose forms a bulge more or less clearly before it enters the press nip.
  • the arrangement according to the invention now avoids the fact that the web has to run over this bead together with a felt band or with two felt bands, as a result of which the web would suffer a very sudden deflection and thus severe distortion.
  • the jackets of the press rolls must have recesses (e.g. blind holes) for the temporary storage of water.
  • suction rolls can be provided; rather, suction rolls are excluded because the press rolls in the usual working widths of the paper machines must be designed as deflection-setting rolls, the roll shells of which are always liquid-tight.
  • the arrangement according to the invention has a further advantage: since the run-up point of the fibrous web, as already mentioned above, is in the upper ascending quadrant of the circumference of the first press roll, the path of the web from the wire section to the first press nip must be inclined slightly upwards. This means that the first press nip comes to lie at a relatively great height, so that the foundation carrying the first long nip press can be arranged at the same height level as the foundation for the wire section and for the subsequent second long nip press . On the other hand, if the press roller of the first extended-nip press (above the flexible press element) is arranged in reverse, the path of the web should be inclined downwards.
  • the first press nip would have to be arranged at a very low height level. This would undesirably mean that special, deep foundations would have to be provided for the first press.
  • US Pat. No. 3,293,121 describes a long-nip press immediately following the wire section, with a press roll underneath and a flexible press element lying on top, which, however, is only pressed onto the press roll by means of air pressure. This means that a press shoe is missing, so that adequate drainage performance cannot be expected.
  • the U.S. Re. 30,268 discloses an extended-nip press, in turn, with a press roll at the bottom and a flexible press element at the top. This is pressed onto the press roll by means of several press shoes.
  • the flexible press element is a press belt rotating over guide rolls. The interior enclosed by this is inevitably open on both ends.
  • the press shoes which have to be supplied with a lubricant, are surrounded by a housing which slidably abuts the press belt. Nevertheless, there is a risk that some of the lubricant will leak out. It is then particularly difficult, if not impossible, with this arrangement to fully absorb this lubricant component which is forced to the outside. The risk of contamination of the paper web and the machine parts can practically not be eliminated with this arrangement. This danger is avoided in the arrangement according to DE-OS 34 26 235, thanks to the press hose which is closed at the end.
  • a disadvantage of this known arrangement is as follows: The paper web runs, in this case together with two felts, in an approximately horizontal direction to the flat press nip, which with the help a press shoe is formed.
  • the web must therefore be deflected upwards immediately before entering the press nip by a relatively sharp curvature of the press hose.
  • this danger is increased by the fact that the press hose sometimes forms a bead at this inlet point.
  • the above-mentioned press roll can be used to exploit several advantages, some of which are known: the gravity acting on the press roll counteracts the press force exerted by the press shoe.
  • the line force which is usually very high in long-nip presses and is at or above 1000 kN / m can be exerted.
  • the maximum line force is preferably limited to a medium value (e.g. 800 kN / m).
  • Another advantage arises from the fact that the web must run from top to bottom with an incline from top to bottom. This brings the second press nip to the normal level, which is lower than the level of the first press nip.
  • the main drainage is directed downwards in the first press and upwards in the second press. This not only achieves a particularly high total drainage, but also more uniform paper surfaces on the top and bottom of the paper web, ie the so-called two-sidedness of the finished paper web is reduced.
  • the drawing shows an exemplary embodiment of the invention in a schematic side view. From a four-wire section, on which the paper web is formed in the usual way, a screen suction roll 10 and a screen reversing roll 11 as well as the endless screen belt 12 can be seen .
  • a felt tape 15 comes from below, that runs over a guide roller 16 and from here together with the paper web and the take-off felt 13 towards the first press 20. From this one can see parts of a frame-like frame 21, a press roll 22 located underneath and an extended-nip press unit 23, 24 arranged above it.
  • This long-gap press unit 23, 24 is also shown only schematically.
  • a flexible press hose (or "press jacket") 23 which runs on a predominantly circular path around a not shown, stationary support body supported in the frame 21.
  • a vertically displaceable press shoe 24 is arranged, which has a sliding surface adapted to the shape of the press roll 22 for the press hose 23 and can press it against the press roll 22.
  • the two felt belts 13 and 15 run together with the one between them located paper web.
  • the path of the two felt belts 13 and 15 in the direction of the first press nip is inclined slightly upwards, so that it hits the circumference of the press roll 22 at point A, ie shortly before the entry into the press nip.
  • the bottom felt 15 runs, first together with the paper web in an approximately horizontal direction to a guide roller 25 and from this diagonally downwards to a transfer point U, where an upper felt 26 of the second press 30 takes over the paper web by means of a take-off suction roller 27.
  • the bottom felt 15 then runs down over guide rolls 28 and 29 and then back to the guide roll 16.
  • the jacket of the press roll 22, preferably in the form of blind bores, has a storage volume for water which is pressed out of the fibrous web.
  • the blind holes are symbolically represented by an interrupted circle. Instead of blind holes, grooves or a fabric jacket or similar other devices for storing water can also be provided.
  • the water transported down through the blind holes is partly removed from the holes by centrifugal force and partly by gravity.
  • a scraper 18 is provided for stripping water. The removed water collects in a tub 19 and is discharged to the outside via a line 19 '.
  • the second press 30 has a frame-like press frame 31, a press roll 32 and an extended-nip press unit 33, 34.
  • the press roll 32 is now above the extended-nip press unit 33, 34 arranged so that the press shoe 34 presses the press jacket 33 in the upward direction towards the press roll 32.
  • the upper felt 26 runs together with the paper web from the take-off suction roll 27 to a guide roll 35, where it meets with a lower felt 36. From here both felts 26 and 36 run together with the paper web in between on a slightly downward sloping path to the press nip of the second press 30.
  • the paper web is completely drained so much that it is free behind the second press nip, i.e.
  • the essentially horizontal path of the paper web is designated by 9.
  • the upper felt 26 runs upwards via a guide roller 37 and from there back to the take-off suction roll 27.
  • the bottom felt 36 runs downwards via a guide roller 38 and from there back to the guide roller 35.
  • the two press rolls 22 and 32 are designed in a known manner as deflection adjustment rolls. This is indicated schematically using the example of the press roll 32: through the hollow, rotatable roll shell extends a stationary bending beam 32 '. Inside the roller, a hydraulic support device is provided between the bending beam and the roll shell, which transmits the pressing force exerted by the press shoe 34 on the roller shell 32 to the bending beam 32 ', which in turn is supported in the frame 31.
  • Both press frames 21 and 31 stand on an equally high foundation 8, on which the wire section, e.g. the rollers 10 and 11 is supported.
  • the press nip of the first press is at a higher level than the press nip of the second press.

Landscapes

  • Paper (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Noodles (AREA)
EP88903245A 1987-04-14 1988-04-12 Maschine zur herstellung von faserstoffbahnen Expired - Lifetime EP0309530B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88903245T ATE68540T1 (de) 1987-04-14 1988-04-12 Maschine zur herstellung von faserstoffbahnen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3712709 1987-04-14
DE3712709 1987-04-14

Publications (2)

Publication Number Publication Date
EP0309530A1 EP0309530A1 (de) 1989-04-05
EP0309530B1 true EP0309530B1 (de) 1991-10-16

Family

ID=6325640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88903245A Expired - Lifetime EP0309530B1 (de) 1987-04-14 1988-04-12 Maschine zur herstellung von faserstoffbahnen

Country Status (8)

Country Link
EP (1) EP0309530B1 (enrdf_load_stackoverflow)
JP (1) JPH01501074A (enrdf_load_stackoverflow)
AT (1) ATE68540T1 (enrdf_load_stackoverflow)
BR (1) BR8806893A (enrdf_load_stackoverflow)
DE (1) DE3865618D1 (enrdf_load_stackoverflow)
FI (1) FI93563B (enrdf_load_stackoverflow)
RU (1) RU1830094C (enrdf_load_stackoverflow)
WO (1) WO1988008051A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19645408B4 (de) * 1996-11-04 2004-04-15 Voith Sulzer Papiermaschinen Gmbh Verfahren zur Herstellung einer Faserstoffbahn

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3815278A1 (de) * 1988-05-05 1989-11-16 Voith Gmbh J M Pressenpartie einer maschine zur herstellung einer faserstoffbahn, insbesondere papierbahn
DE4042480C2 (de) * 1990-08-17 2000-02-10 Voith Gmbh J M Pressenpartie einer Papiermaschine
DE4026021C2 (de) * 1990-08-17 1995-10-12 Voith Gmbh J M Pressenpartie einer Papiermaschine
US5389205A (en) * 1990-11-23 1995-02-14 Valmet Paper Machinery, Inc. Method for dewatering of a paper web by pressing using an extended nip shoe pre-press zone on the forming wire
FI96789C (fi) * 1990-11-23 1996-08-26 Valmet Paper Machinery Inc Menetelmä ja laite veden poistamiseksi paperiradasta puristamalla
DE4112355A1 (de) * 1991-04-16 1992-10-22 Escher Wyss Gmbh Pressenpartie einer papiermaschine
DE4223715C2 (de) * 1992-07-18 1995-07-20 Escher Wyss Gmbh Walze
DE4227000A1 (de) * 1992-08-14 1992-12-10 Voith Gmbh J M Vorrichtung zum einwirken auf die unterseite einer laufenden bahn, vorzugsweise papierbahn
US6368466B1 (en) * 1993-12-08 2002-04-09 Valmet Corporation Press section of a paper making machine employing an extended nip press
US5868904A (en) * 1993-12-08 1999-02-09 Valmet Corporation Press section employing an extended nip press with suction counter roll
FI112391B (fi) * 1993-12-08 2003-11-28 Metso Paper Inc Paperikoneen puristinosa, jossa käytetään pitkänippipuristinta
FI110440B (fi) * 1996-04-04 2003-01-31 Metso Paper Inc Rainan siirto paperikoneen kaksihuopaisesta viimeisestä puristinnipistä seuraavalle kuivatusosalle
DE29701382U1 (de) * 1997-01-28 1997-03-20 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Pressenpartie einer Papiermaschine
DE19801417A1 (de) * 1998-01-16 1999-07-22 Voith Sulzer Papiertech Patent Pressenpartie
EP1238146B1 (en) * 1999-05-14 2005-02-23 Metso Paper, Inc. Method and machine for manufacturing printing paper or paperboard
DE102023108253A1 (de) 2023-03-31 2024-10-02 Voith Patent Gmbh Pressenanordnung und Verfahren zum Pressen einer Faserstoffbahn

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4483745A (en) * 1982-09-29 1984-11-20 Beloit Corporation Method and apparatus of sheet transfer using a nonporous smooth surfaced belt
FI70950C (fi) * 1983-03-25 1986-10-27 Valmet Oy Pressparti med slutet drag i pappersmaskin
FI842114A7 (fi) * 1984-05-25 1985-11-26 Valmet Oy Pressparti med separata presszon i en pappersmaskin.
CA1249470A (en) * 1985-01-08 1989-01-31 Gregory L. Wedel Electromagnetic extended nip press
FI82500C (fi) * 1985-02-18 1991-03-11 Valmet Oy Pressparti med separata pressnyp i en pappersmaskin.
SE455316B (sv) * 1985-12-09 1988-07-04 Nordiskafilt Ab Forfarande och anordning vid pressnyp i presspartiet till pappersmaskiner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19645408B4 (de) * 1996-11-04 2004-04-15 Voith Sulzer Papiermaschinen Gmbh Verfahren zur Herstellung einer Faserstoffbahn

Also Published As

Publication number Publication date
DE3865618D1 (de) 1991-11-21
EP0309530A1 (de) 1989-04-05
WO1988008051A1 (en) 1988-10-20
ATE68540T1 (de) 1991-11-15
FI93563B (fi) 1995-01-13
RU1830094C (ru) 1993-07-23
JPH01501074A (ja) 1989-04-13
FI885768A0 (fi) 1988-12-13
BR8806893A (pt) 1989-10-31
FI885768A7 (fi) 1988-12-13
JPH0141758B2 (enrdf_load_stackoverflow) 1989-09-07

Similar Documents

Publication Publication Date Title
EP0496965B1 (de) Pressenpartie
EP0309530B1 (de) Maschine zur herstellung von faserstoffbahnen
EP0854229B1 (de) Maschine zur Herstellung einer Faserstoffbahn
DE3815278A1 (de) Pressenpartie einer maschine zur herstellung einer faserstoffbahn, insbesondere papierbahn
DE2155547C3 (de) Vorrichtung zum Entwässern einer von einem porösen Band unterstützten biegsamen Papierbahn
DE2326980A1 (de) Druckmittelbetaetigte entwaesserungsvorrichtung fuer papierbahnen
DE2935630A1 (de) Weiterbildung einer feuchtpresse mit erweiterten pressflaechen
DE2139591A1 (de) Papiermaschine und Verfahren zum Trocknen der Papierbahn
DE8805966U1 (de) Pressenpartie einer Maschine zur Herstellung einer Faserstoffbahn, insbesondere Papierbahn
DE19756422A1 (de) Maschine zur Herstellung einer Faserstoffbahn, insbesondere einer Tissue-Papierbahn
EP0837181B1 (de) Pressenpartie
EP1316641B1 (de) Pressenpartie
DE4026021C2 (de) Pressenpartie einer Papiermaschine
DE19654197A1 (de) Maschine zur Herstellung einer Faserstoffbahn
DE4301751C2 (de) Verfahren zum Ablösen einer laufenden Faserstoffbahn von zwei endlosen Siebbändern
DE29811048U1 (de) Pressenanordnung
DE19756203A1 (de) Naßpartie und Verfahren zur Herstellung einer Faserstoffbahn
DE1561675A1 (de) Vorrichtung an Pressen zum Entwaessern von Papier- und Massebahnen
DE19801417A1 (de) Pressenpartie
DE4026339C2 (de) Spezialband für eine Entwässerungspresse einer Papiermaschine
DE8717279U1 (de) Maschine zur Herstellung von Faserstoffbahnen
DE19902139A1 (de) Pressenanordnung
DE9011940U1 (de) Pressenpartie einer Papiermaschine
DE4443875C2 (de) Langspaltpresse
DE19654325A1 (de) Pressenpartie für eine Papiermaschine

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: 19881105

AK Designated contracting states

Kind code of ref document: A1

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

17Q First examination report despatched

Effective date: 19900711

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 FR GB IT LI NL SE

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19911016

Ref country code: BE

Effective date: 19911016

Ref country code: NL

Effective date: 19911016

REF Corresponds to:

Ref document number: 68540

Country of ref document: AT

Date of ref document: 19911115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3865618

Country of ref document: DE

Date of ref document: 19911121

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: VALMET-KARLSTAD AB

Effective date: 19920703

26 Opposition filed

Opponent name: SULZER-ESCHER WYSS GMBH

Effective date: 19920714

Opponent name: VALMET-KARLSTAD AB

Effective date: 19920703

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: VALMET-KARLSTAD AB * 920714 SULZER-ESCHER WYSS GMB

Effective date: 19920703

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: VALMET-KARLSTAD AB * 920714 SULZER-ESCHER WYSS GMB

Effective date: 19920703

EAL Se: european patent in force in sweden

Ref document number: 88903245.4

APAE Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOS REFNO

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

Ref country code: AT

Payment date: 19970320

Year of fee payment: 10

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

Ref country code: CH

Payment date: 19970605

Year of fee payment: 10

APAC Appeal dossier modified

Free format text: ORIGINAL CODE: EPIDOS NOAPO

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

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

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19970708

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: 19980412

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: 19980430

Ref country code: CH

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

Effective date: 19980430

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GB

Payment date: 20020416

Year of fee payment: 15

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

Ref country code: FR

Payment date: 20020423

Year of fee payment: 15

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 NON-PAYMENT OF DUE FEES

Effective date: 20030412

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20030412

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

Ref country code: FR

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

Effective date: 20031231

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

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: 20

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: 20

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

Free format text: ORIGINAL CODE: 0009299OPPO

EUG Se: european patent has lapsed
PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO