EP0854230B1 - Press humide - Google Patents

Press humide Download PDF

Info

Publication number
EP0854230B1
EP0854230B1 EP97119411A EP97119411A EP0854230B1 EP 0854230 B1 EP0854230 B1 EP 0854230B1 EP 97119411 A EP97119411 A EP 97119411A EP 97119411 A EP97119411 A EP 97119411A EP 0854230 B1 EP0854230 B1 EP 0854230B1
Authority
EP
European Patent Office
Prior art keywords
press
web
belt
nip
fibrous web
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
EP97119411A
Other languages
German (de)
English (en)
Other versions
EP0854230A2 (fr
EP0854230A3 (fr
Inventor
Gerhard Kotitschke
Wolfgang Mayer
Klaus Esslinger
Andreas Meschenmoser
Günther Morhardt
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 EP0854230A2 publication Critical patent/EP0854230A2/fr
Publication of EP0854230A3 publication Critical patent/EP0854230A3/fr
Application granted granted Critical
Publication of EP0854230B1 publication Critical patent/EP0854230B1/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
    • 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 wet end of a machine for manufacturing a fibrous web, in particular paper and / or Board web, according to the generic term of Claim 1 or claim 3.
  • the entry type is the function of a press in the Screen area of the former integrated to a web take-off point save.
  • the press point provided in the screen area becomes formed by a suction roll and an open roll.
  • Press nip is either very hard, i.e. with a high line force, or very short and soft, what on a low line force is due.
  • Neither one the other mode of operation is also suitable for the fibrous web at low dryness, i.e. when still wet Fibrous web, the amount of water required if possible to withdraw from a small pressure gradient.
  • EP-A-0 657 579 discloses a wet end of a machine for Production of a fibrous web according to the preamble of the claim 1 or claim 3.
  • the aim of the invention is a wet end of the aforementioned Art to create that with minimal effort and little Space requirements as well as with minimal energy requirements and accordingly low operating costs the best possible Drainage of the pre-formed, still wet fibrous web guaranteed.
  • the task is performed according to the characteristics of the Claim 1 and claim 3 solved.
  • the solution according to the invention is i.a. on gap formers, hybrid formers, Fourdrinier sieves, multiple long sieves and / or the like can be used.
  • the press nip length can be adapted to the respective product type be adjusted. After the press point in question closer to Headbox, the fibrous web is warmer when pressed, which further increases the drainage capacity. In addition, there is less screen wear overall. Energy costs are significantly reduced.
  • the squeeze takes place in an extremely gentle manner, the pressure profile through appropriate shoe design (e.g. length, Form) can be specified. After all, it is also extremely volume-saving Pressing guaranteed.
  • At least one of the web formation zones assigned sieve is extended by the one in the web running direction Press nip led. It is in certain use cases an advantage, two sieves assigned to the path formation zone to pass through the press nip.
  • a band passed through the press nip and the tape structure obtained is symmetrical with respect to the fibrous web.
  • the fibrous web is on each side of the web one each supporting the fibrous web, preferably made of fine tissue support band, one of the Absorbing and transporting water band made of porous Fabric and a waterproof tape are provided.
  • the support band is preferably a felt and / or Screen belt.
  • the in Extended web nip between a circumferential, via at least one press shoe guided flexible Press belt and an opposing press surface formed can thus in particular by a Shoe press be formed.
  • Press nip is preferably a press shoe with a at least essentially flat surface-side pressing surface intended.
  • the through the press nip running fabric is mechanically less stressed to bend, so that they are thicker and absorb more water accordingly can.
  • the wet end preferably comprises a headbox additionally fed with dilution water.
  • the wet end is provided in combination with at least one further extended nip press and a transfer zone for a transfer of the fibrous web into a drying section, the fibrous web preferably being guided in such a way that overall a closed web guide results.
  • the first press nip can have at least one further press nip follow, which is an elongated nip or a nip can act.
  • To form the press nip extended in the direction of web travel can also be a press belt guided over at least one press shoe be provided, at least outside the shoe area is essentially circular cylindrical and thus takes a roll shape.
  • Figure 1 shows a purely schematic side view of an embodiment a wet section of a manufacturing machine a fibrous web 10, in particular paper and / or cardboard web.
  • the wet end comprises an extended nip press 20 with an in Web running direction L extended nip between two Shoe press rolls 22, 24 is formed.
  • a belt 26 or 28 performed, which is for example a Screen and / or felt belt can act.
  • the press nip formed by the long nip press 20 is in an area is provided in which the dry content of the in the Gap incoming pre-formed fibrous web 10 smaller or equal to 15% and preferably less than or equal to 12% is.
  • the two shoe press rolls 22 and 24 each include one via a press shoe 30 guided flexible press belt 32 is the area between press shoe 30 and flexible press belt 32 each lubricated with water. They also have Press shoes 30 in the present case, at least in each case essentially flat pressing surface on the jacket side.
  • the wet end is in combination with two other presses 34, 36, of which one, namely the press 34, one Long nip press, and a transfer zone 38 for one Transfer of the fibrous web 10 into the dryer section is provided.
  • the fibrous web 10 is guided so that overall results in a closed web guide.
  • the two other presses 34, 36 are used in the present Case with a central deflection compensation roller 40 with smooth, i.e. a closed surface having a roller jacket and on the one hand another shoe press roll 42 and on the other hand, a further press roller 44 is formed.
  • the central one smooth deflection compensation roller 40 takes over the fibrous web 10 directly from the lower sieve 12.
  • Figure 2 shows a schematic side view of another Embodiment of a wet end, which also with a Web running direction is extended press nip.
  • the extended press nip is in this case between one Shoe press roll 46 and a suction roll 48 are formed.
  • the corresponding obtained long nip press 50 is in turn in one Area provided in which the dry content of the in the gap incoming pre-formed fibrous web less than or equal to 15% and preferably less than or equal to 12%.
  • Figure 2 can be seen is through the gap Long nip press 50 in turn only the lower wire 12 of the two sieves 12, 14 assigned to the path formation zone (cf. FIG. 1) guided.
  • the web formation zone in the area of the forming roll is in the same way as in the embodiment of FIG. 1 built up.
  • FIG 3 is another in a schematic side view Embodiment of a wet end with one in the direction of web travel elongated press nip shown.
  • the is extended Press nip between a forming roller 56 and one Shoe press roll 22 is formed, around which in turn a belt 26 is guided is.
  • the forming roll 56 is one of the web formation zones assigned lower sieve 12 out. It is by the Headbox 16 between the lower screen 12 and the forming roller 56 formed inlet-side gap at least one Fiber suspension stream fed so that the fibrous web generated between the lower wire 12 and the forming roller 56 becomes.
  • the fibrous web is finally from the forming roller 56 taken over by a felt 60 guided around a suction roller 58, to then be fed to further press nips, the again be formed by at least one extended-nip press can.
  • the first long gap press 62 comprising the shoe press 22 in the present case is thus in the area of the forming roller 56 provided, the relevant extended nip between this forming roller 56 and the shoe press roller 22 are formed is.
  • the extended nip press is again arranged in one area; in which the dryness of the in the pre-formed fibrous web entering the relevant gap less than or equal to 15% and preferably less than or is equal to 12%.
  • Figure 4 shows a schematic side view of another Embodiment of a wet press with an additional dilution water fed headbox 16.
  • the forming roller 18 lies in the loop of the upper sieve 14, while the lower sieve 12 over this of the screen 14 wrapped forming roller 18 is guided.
  • the screen 12 is one Suction roller 64 guided to the preformed fibrous web 10 the first, formed by the extended nip press 20 to supply extended press nip.
  • this embodiment according to FIG. 4 essentially has the same structure as that shown in Figure 1 Wet end.
  • the bottom is Screen 12 of the two screens assigned to the web formation zone 12, 14 passed through the first extended press nip.
  • the relevant press nip extended in the direction of web travel again provided in an area where the dryness the preformed fibrous web entering the gap less than or equal to 15% and preferably less or is equal to 12%.
  • Figure 5 shows a further embodiment with a separate Shoe press 66 before acceptance in the press section.

Landscapes

  • Paper (AREA)

Claims (10)

  1. Section humide d'une machine pour la fabrication d'une nappe fibreuse (10), en particulier une nappe de papier et/ou de carton, comprenant au moins une presse, qui comprend une ligne de contact à travers laquelle est guidée la nappe fibreuse (10) formée au préalable dans une zone de formation de nappe, au moins une presse étant une presse à fente longitudinale (20, 50, 62) et la ligne de contact concernée étant une ligne de contact se prolongeant dans la direction d'avance de la nappe (L) et la ligne de contact étant prévue dans une zone dans laquelle la teneur en matières sèches de la nappe fibreuse (10) formée au préalable et entrant dans la fente est inférieure ou égale à 15 %, et de préférence inférieure ou égale à 12 %, et au moins un tamis (12) associé à la zone de formation de nappe est guidé à travers la ligne de contact prolongée dans la direction d'avance de la nappe (L),
    caractérisée en ce que
    de part et d'autre de la nappe fibreuse (10), au moins une bande est guidée à chaque fois à travers la ligne de contact, en ce que la structure des bandes obtenues est symétrique par rapport à la nappe fibreuse (10) et en ce que de chaque côté de la nappe, partant de la nappe fibreuse (10), on prévoit à chaque fois une bande de support supportant la nappe fibreuse (10) se composant de préférence d'un tissu fin, une bande en tissu poreux servant à recevoir et à transporter l'eau, et une bande imperméable à l'eau.
  2. Section humide selon la revendication 1,
    caractérisée en ce que
    la bande de support est une bande de feutre ou un tamis à bande.
  3. Section humide d'une machine pour la fabrication d'une nappe fibreuse (10), en particulier une nappe de papier et/ou de carton, comprenant au moins une presse, qui comprend une ligne de contact à travers laquelle est guidée la nappe fibreuse (10) formée au préalable dans une zone de formation de nappe, au moins une presse étant une presse à fente longitudinale (20, 50, 62) et la ligne de contact concernée étant une ligne de contact se prolongeant dans la direction d'avance de la nappe (L) et la ligne de contact étant prévue dans une zone dans laquelle la teneur en matières sèches de la nappe fibreuse (10) formée au préalable et entrant dans la fente est inférieure ou égale à 15 %, et de préférence inférieure ou égale à 12 %, et au moins un tamis (12) associé à la zone de formation de nappe est guidé à travers la ligne de contact prolongée dans la direction d'avance de la nappe (L),
    caractérisée en ce que
    de part et d'autre de la nappe fibreuse (10), au moins une bande est guidée à chaque fois à travers la ligne de contact, en ce que la structure des bandes obtenues est asymétrique par rapport à la nappe fibreuse et en ce que, partant de la nappe fibreuse (10), d'un côté de la nappe on prévoit à chaque fois une bande de feutre et une bande imperméable à l'eau, et de l'autre côté de la nappe un tamis à bande, une bande grossière poreuse et une bande imperméable à l'eau.
  4. Section humide selon l'une quelconque des revendications 1 à 3, caractérisée en ce que
    deux tamis associés à la zone de formation de nappe sont guidés à travers la ligne de contact prolongée dans la direction d'avance de la nappe (L).
  5. Section humide selon l'une quelconque des revendications précédentes, caractérisée en ce que la ligne de contact prolongée dans la direction d'avance de la nappe (L) est formée entre une bande de pressage (32) flexible périphérique guidée sur au moins un sabot de presse (30) et une surface de pressage conjuguée.
  6. Section humide selon la revendication 5,
    caractérisée en ce que
    la zone entre le sabot de presse (30) et la bande de pressage flexible (32) est lubrifiée avec de l'eau.
  7. Section humide selon la revendication 6,
    caractérisée en ce que
    la boucle de bande formée par la bande de pressage flexible périphérique est ouverte à ses deux extrémités de bout.
  8. Section humide selon l'une quelconque des revendications précédentes, caractérisée en ce que pour la formation de la première ligne de contact prolongée, vu dans la direction d'avance de la nappe (L), on prévoit un sabot de presse (30) avec une surface de pressage au moins essentiellement plane du côté de l'enveloppe.
  9. Section humide selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend une caisse de tête (16) alimentée en outre en eau de dilution.
  10. Section humide selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle est prévue conjointement avec au moins une autre presse à fente longitudinale (34) et une zone de transfert (38) pour un transfert de la nappe fibreuse (10) dans une section sèche, la nappe fibreuse (10) étant guidée de préférence de telle sorte que l'on obtienne au total un guidage de bande fermé.
EP97119411A 1996-12-23 1997-11-06 Press humide Expired - Lifetime EP0854230B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19654200A DE19654200A1 (de) 1996-12-23 1996-12-23 Naßpresse
DE19654200 1996-12-23

Publications (3)

Publication Number Publication Date
EP0854230A2 EP0854230A2 (fr) 1998-07-22
EP0854230A3 EP0854230A3 (fr) 1999-05-26
EP0854230B1 true EP0854230B1 (fr) 2003-02-19

Family

ID=7816128

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97119411A Expired - Lifetime EP0854230B1 (fr) 1996-12-23 1997-11-06 Press humide

Country Status (3)

Country Link
US (1) US6221214B1 (fr)
EP (1) EP0854230B1 (fr)
DE (2) DE19654200A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19805593A1 (de) * 1998-02-12 1999-08-19 Voith Sulzer Papiertech Patent Eindicker
US6790315B2 (en) * 1999-06-17 2004-09-14 Metso Paper Karlstad Ab Drying section and method for drying a paper web
SE516663C2 (sv) * 1999-06-17 2002-02-12 Metso Paper Karlstad Ab Torkparti i en maskin för tillverkning av en kontinuerlig tissuepappersbana samt metod för torkning av en kontinuerlig
US6398909B1 (en) * 1999-06-17 2002-06-04 Valmet-Karlstad Aktiebolag Method and apparatus for imprinting, drying, and reeling a fibrous web
WO2002020258A1 (fr) * 2000-09-04 2002-03-14 Valmet-Karlstad Aktiebolag Procede et appareil de production d'un carton a motifs
FI115307B (fi) * 2000-11-06 2005-04-15 Metso Paper Inc Esipuristimella varustettu kartonkikoneen puristinosa
EP1304413A3 (fr) * 2001-10-18 2004-05-12 Voith Paper Patent GmbH Section de séchage et un appareil de lissage pour la section de séchage
AT508331B1 (de) * 2009-05-19 2011-05-15 Andritz Ag Maschf Verfahren und vorrichtung zur behandlung einer faserstoffbahn in einer langnip-presseinheit
SE1651555A1 (en) * 2016-11-28 2018-02-13 Valmet Oy A forming section for forming a fibrous web, a papermaking machine comprising a forming section and a method of forming a fibrous web
JP7361019B2 (ja) * 2017-09-01 2023-10-13 ストラ エンソ オーワイジェイ 板紙の製造方法、板紙、および段ボール

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT44784B (de) 1908-12-14 1910-11-10 Dominik Kopp Ventil mit Federbelastung.
ZA81676B (en) * 1980-03-07 1982-08-25 Albany Int Corp Dewatering press
EP0043289A3 (fr) * 1980-07-02 1982-01-20 Black-Clawson International Limited Procédé et dispositif pour fabriquer le papier et le carton
FI76608C (fi) * 1982-07-13 1988-11-10 Ahlstroem Valmet Press med laongt nyp.
FR2574829B1 (fr) * 1984-12-17 1987-01-09 Du Pin Cellulose Procede et dispositif pour l'elimination du liquide d'une couche obtenue notamment par un procede papetier
US4879001A (en) 1988-09-12 1989-11-07 Beloit Corporation Twin wire former with roll press followed by extended nip press
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
FI98844C (fi) * 1991-12-23 1997-08-25 Valmet Paper Machinery Inc Paperikoneen puristinosa, etenkin painopaperilaaduille
DE4224730C1 (en) * 1992-07-27 1993-09-02 J.M. Voith Gmbh, 89522 Heidenheim, De Tissue paper mfg. machine preventing moisture return - comprises shoe press for press unit(s) for drying tissue web, for min. press units
FI93237C (fi) * 1993-06-11 1995-03-10 Valmet Tampella Inc Menetelmä ja laite paperi- tai kartonkikoneessa veden poistamiseksi rainasta
FI112391B (fi) * 1993-12-08 2003-11-28 Metso Paper Inc Paperikoneen puristinosa, jossa käytetään pitkänippipuristinta
US5868904A (en) 1993-12-08 1999-02-09 Valmet Corporation Press section employing an extended nip press with suction counter roll
FI942616A (fi) * 1994-06-03 1995-12-04 Valmet Corp Paperirainan esipuristin
DE4423694C2 (de) * 1994-07-06 2000-03-16 Voith Sulzer Papiermasch Gmbh Langspaltpresse
FI98843C (fi) * 1995-10-03 1997-08-25 Valmet Corp Menetelmä ja laite veden poistamiseksi paperi- tai kartonkiradasta puristamalla
US5709778A (en) * 1996-10-30 1998-01-20 Voith Sulzer Paper Technology North America, Inc. Multiple shoe press for a paper making machine

Also Published As

Publication number Publication date
DE19654200A1 (de) 1998-06-25
EP0854230A2 (fr) 1998-07-22
US6221214B1 (en) 2001-04-24
EP0854230A3 (fr) 1999-05-26
DE59709348D1 (de) 2003-03-27

Similar Documents

Publication Publication Date Title
DE4224730C1 (en) Tissue paper mfg. machine preventing moisture return - comprises shoe press for press unit(s) for drying tissue web, for min. press units
EP1626122B1 (fr) Procédé et dispositif pour produire une bande de matière fibreuse pourvue d'une structure superficielle tridimensionelle
EP0496965A1 (fr) Section de presse
EP2576895A2 (fr) Machine pour produire une bande de papier, en particulier une bande de papier pour sac
EP0926296B1 (fr) Machine pour la fabrication d'une bande de papier, en particulier une bande de papier tissu
EP0854230B1 (fr) Press humide
EP1397553B1 (fr) Procede et machine permettant de produire des bandes de matiere fibreuse
EP1316641B1 (fr) Section de pressage
EP0837181B1 (fr) Section de pressage
DE19654282A1 (de) Pressenpartie
EP1205599A2 (fr) Machine pour la fabrication d'une bande fibreuse
EP0735182B1 (fr) Section de presse
EP0954634B1 (fr) Systeme de presse
DE4301751C2 (de) Verfahren zum Ablösen einer laufenden Faserstoffbahn von zwei endlosen Siebbändern
DE19756203A1 (de) Naßpartie und Verfahren zur Herstellung einer Faserstoffbahn
DE20117558U1 (de) Pressenanordnung
DE19801417A1 (de) Pressenpartie
EP1739228A1 (fr) Machine pour fabriquer une bande fibreuse
WO2009092477A1 (fr) Dispositif de fabrication et/ou de traitement d’une bande de matière fibreuse
WO2017162685A1 (fr) Dispositif et procédé de fabrication d'une bande de matière fibreuse multicouche
EP1743974B1 (fr) Section de presse
DE29623297U1 (de) Naßpresse
DE29923284U1 (de) Papiermaschine
DE19801891A1 (de) Pressenpartie
EP0894893A2 (fr) Section de formage à deux toiles

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): DE FI IT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

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

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

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

Owner name: VOITH SULZER PAPIERTECHNIK PATENT GMBH

17P Request for examination filed

Effective date: 19991126

AKX Designation fees paid

Free format text: DE FI IT SE

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

Owner name: VOITH PAPER PATENT GMBH

17Q First examination report despatched

Effective date: 20010803

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

Designated state(s): DE FI IT SE

REF Corresponds to:

Ref document number: 59709348

Country of ref document: DE

Date of ref document: 20030327

Kind code of ref document: P

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: 20031120

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

Ref country code: DE

Payment date: 20041105

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: 20041109

Year of fee payment: 8

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

Ref country code: FI

Payment date: 20041110

Year of fee payment: 8

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;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.

Effective date: 20051106

Ref country code: FI

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

Effective date: 20051106

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: 20051107

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: 20060601

EUG Se: european patent has lapsed