EP0131940A2 - Tamis à plusieurs couches, en particulier pour la partie humide d'une machine à papier - Google Patents

Tamis à plusieurs couches, en particulier pour la partie humide d'une machine à papier Download PDF

Info

Publication number
EP0131940A2
EP0131940A2 EP84108280A EP84108280A EP0131940A2 EP 0131940 A2 EP0131940 A2 EP 0131940A2 EP 84108280 A EP84108280 A EP 84108280A EP 84108280 A EP84108280 A EP 84108280A EP 0131940 A2 EP0131940 A2 EP 0131940A2
Authority
EP
European Patent Office
Prior art keywords
threads
thread
longitudinal
fabric layer
transverse
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP84108280A
Other languages
German (de)
English (en)
Other versions
EP0131940A3 (en
EP0131940B1 (fr
Inventor
Heinz Dr. Odenthal
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.)
Andreas Kufferath GmbH and Co KG
Original Assignee
Andreas Kufferath KG
Andreas Kufferath GmbH and Co KG
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 Andreas Kufferath KG, Andreas Kufferath GmbH and Co KG filed Critical Andreas Kufferath KG
Priority to AT84108280T priority Critical patent/ATE30255T1/de
Publication of EP0131940A2 publication Critical patent/EP0131940A2/fr
Publication of EP0131940A3 publication Critical patent/EP0131940A3/de
Application granted granted Critical
Publication of EP0131940B1 publication Critical patent/EP0131940B1/fr
Expired 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
    • D21F1/0027—Screen-cloths
    • D21F1/0036—Multi-layer screen-cloths

Definitions

  • Multi-layer drainage screen especially for the sheet forming part of a paper machine
  • the invention relates to a multilayer drainage screen, in particular for the sheet forming part of a paper machine, of the type specified in the preamble of claim 1.
  • the underside of the lower fabric layer forms the underside of the barrel or screen, over which the dewatering screen rests on parts of the paper machine, such as rollers, rollers, suction and discharge devices, and is moved over them during circulation of the screen Fabric layer takes place through some of the longitudinal or warp threads of the lower fabric layer, in that these are also guided into the upper fabric layer and are each connected to a cross or weft thread there.
  • the longitudinal thread arcs are therefore subject to both the screen tension acting in the longitudinal direction or in the direction of the screen as well as the abrasion or wear on contact with the aforementioned parts of the paper machine. Both are circumstances that negatively influence the sieve run time or sieve life.
  • the connection points of the thicker longitudinal threads of the lower fabric layer are raised or as projections.
  • connection of the comparatively thick longitudinal threads in the upper fabric layer firstly in the upper fabric layer leads to a disturbance in the uniformity of the structure of the top of the screen, which is shown as a screen mark in the paper surface, in two respects, namely by the presence of the additional thread bindings themselves and due to their majesty compared to the other thread bindings in the upper fabric layer, which determine the screen support surface, and secondly in the lower fabric layer leads to incorrect assignments or weak points due to the lack of the longitudinal thread bindings.
  • These defects reduce the stability of the fabric and the durability of the screen.
  • a multi-layer drainage sieve (DE-Gbm 74 38 850), in which a comparatively fine and densely designed upper fabric layer and a comparatively coarse and openly designed lower fabric layer - optionally with the interposition of another fabric layer - via special, separate binding warp threads, i.e. are not part of one of the fabric layers, are connected. These binding warp threads each enclose a weft thread at the connection points in the upper fabric layer and in the lower fabric layer.
  • Double-layer drainage sieve also known as a double-layer drainage sieve (DE-OS 30 36 409), which avoids separate binding threads and thus double-layer drainage about seven disadvantages is constructed from an upper and a lower weft or transverse thread layer and a warp or longitudinal thread layer.
  • the weft threads of these two weft thread layers are arranged in pairs one above the other and the warp threads are all bound in the upper layer and only a part of these warp threads is additionally bound in the lower weft thread layer (the threads of which preferably have a greater thickness than the warp threads).
  • this drainage sieve is a single-layer fabric reinforced in the weft, namely by a so-called undershot system; it differs from the previously mentioned multi-layer drainage screens, which have at least one weft and one warp system per layer.
  • a weft-reinforced single-layer fabric With such a weft-reinforced single-layer fabric, a targeted two-sidedness of the fabric can be achieved to a certain extent.
  • the invention can be based on the object of creating a multi-layer drainage screen of the type mentioned in the introduction, which overall has a greater fabric stability that increases the screen runtime and in which the top and bottom of the screen are independent of one another and essentially without disturbing irregularities at the connection points the different conditions placed on them can be designed.
  • the upper fabric layer can be specifically adapted to the paper quality to be produced, for example fine and dense, and the lower fabric layer can be made independently of the upper fabric layer with the aim: increasing the running time, increasing the drainage and / or reducing the tendency of the sieve to become contaminated to the respective operating conditions.
  • the lower fabric layer can be made coarse and open using comparatively thick longitudinal and transverse threads. The use of separate binding threads to connect the fabric layers is avoided.
  • the screen has a substantially flat screen surface. Elevations or depressions at the connection points are avoided.
  • the threads that are used for the individual threads that are incorporated in the upper fabric layer are identical to those that are used for the longitudinal or transverse threads of the upper fabric layer. Differences in cross-sectional shape, cross-sectional area and material properties between the longitudinal threads forming the screen surface - be it integrated single threads of the lower fabric layer or be it longitudinal threads of the upper fabric layer - are excluded. It is also essentially ensured that in the areas in which thread bundles are provided as longitudinal or transverse threads, and in the areas which are not broken down into individual threads by the others Longitudinal or transverse threads are formed, there are practically no differences in strength and stability.
  • a bundle of threads presents itself as a longitudinal or transverse thread divided into individual threads.
  • Each of the individual threads lying close together in the bundle of threads can be handled separately and independently of the other individual threads of the bundle of threads.
  • the development according to claim 4 ensures that the thread involved in the connection is protected against immediate, premature abrasion.
  • the multi-layer drainage screens according to these seven exemplary embodiments are each only a two-layer screen, specifically a drainage screen for the sheet-forming part of a paper machine which is constructed from two woven fabric layers.
  • This paper machine screen is woven from monofilament plastic threads, for example polyester and / or polyamide threads.
  • the threads arranged in the machine direction MD or in the machine direction MD are the so-called longitudinal threads and the threads running transversely to the longitudinal threads in the direction of the CD are the so-called transverse threads.
  • the longitudinal threads are the warp threads which run in the longitudinal direction during the production of the woven fabric, while the transverse threads are the weft threads which are inserted into compartments formed by the tensioned warp threads to be shot.
  • the warp threads in the CD direction and the weft threads in the machine direction MD of the dewatering screen lie. Therefore, in the case of round-woven screens, the warp threads are the so-called transverse threads and the weft threads are the so-called longitudinal threads.
  • the paper machine screen according to Figures 1, 2 and 3 has an upper fabric layer 10 and a lower fabric layer 20.
  • the upper side of the upper fabric layer 10 forms the paper side or upper side of the screen PS, on which the sheet or non-woven fabric is formed from the stock suspension placed on the screen.
  • the underside of the lower fabric layer 20 forms the running side and the wire screen MS with which the papermaking screen on parts of the paper machine, such as rolls, S AUG and Ableit Roaden rests and is moved over it.
  • a single-layer fabric is provided for both fabric layers in the figures. However, double-layer or multi-layer fabrics can also be used.
  • the two fabric layers are deliberately not designed identically, but are designed differently with regard to the different requirements that are placed on the upper side of the screen PS and on the lower side of the screen MS.
  • a comparatively fine and dense fabric is provided as the upper fabric layer 10.
  • This is a single-layer structure made of monofilament plastic threads, for example polyester threads and / or polyamide threads, woven from a longitudinal thread system and a transverse thread system in four-twill weave.
  • the longitudinal and transverse yarns have, for example, a thickness or a diameter of 0, 15 cm in a longitudinal thread density of 46 threads per cm and a transverse thread density of 36 threads per cm.
  • each transverse thread 12 binds with a different longitudinal thread 11, the binding points being arranged at an angle to one another.
  • the longitudinal threads 11 predominate, each of which floats over three transverse threads 12.
  • the upper fabric layer 10 is therefore a longitudinal twill.
  • the lower fabric layer 20 is also woven here from a longitudinal thread system and a cross thread system in four-twill weave. As with the four-twill weave of the upper fabric layer 10 also predominate in the lower fabric layer 20 on the underside, that is the running side or the underside of the screen MS of the dewatering screen, the transverse threads 22, each of which floats under three longitudinal threads 21.
  • the lower fabric layer 20 is thus a longitudinal thread twill or, with regard to the arrangement in the paper machine, a cross thread runner; ie the sieve lies or runs on the cross threads.
  • the transverse threads are rubbed off in front of the longitudinal threads when - as shown in FIG.
  • the longitudinal threads 21 are set back relative to the tangential plane T intended on the underside of the transverse threads 22 (see z in FIG. 2).
  • the density of the threads and the number of threads per cm are also different in the coarse and openly designed lower fabric layer 20 compared to the upper fabric layer 10.
  • the transverse threads here have a diameter of 0.30 cm and are arranged in a transverse thread density of 18 threads per cm and the longitudinal threads have a thickness or a diameter of essentially 0.30 cm and are in a longitudinal thread density of 23 Thread arranged per cm.
  • each bundle of threads 23 consists of several individual threads 3 (here three individual threads 3 ', 3'',3'''), which are aligned in the longitudinal direction, lie tightly packed parallel to each other and are not twisted or twisted. Stitches or gaps are provided between longitudinal threads 21 or between longitudinal threads 21 and thread bundle 23, but not between the individual threads 3 of a thread bundle.
  • the diameter of each of the individual threads 3 is equal to the diameter of a longitudinal thread 11 of the upper fabric layer 10.
  • the thread bundles 23 each have a thickness or a diameter (see D 'in FIG.
  • the individual threads 3, like the longitudinal threads 21 and the transverse threads 22 of the lower fabric layer 20, are monofilament plastic threads, for example made of polyester threads and / or polyamide threads.
  • the upper fabric layer 10 is connected to the lower fabric layer 20 in each case by one of the individual threads 3 of the thread bundle 23. This individual thread 3 is guided over transverse thread 12 and is thus integrated into the upper fabric layer 10.
  • connection points A In the section of the drainage screen according to FIG. 2 there are two connection points A in the specified repeat B-B of the drainage screen. In the present exemplary embodiment, a double or clamp connection is provided at these connection points A.
  • a single thread 3 'in the manner of a longitudinal thread 11 is integrated into the upper fabric layer 10 via three transverse threads 12 and on the other hand is a longitudinal thread 11, namely the one whose place the single thread 3' in has taken up the upper fabric layer 10, around an underlying transverse thread 22 of the lower fabric layer 20 and thereby takes the place of the single thread 3 'guided upward, in its thread bundle 23.
  • the longitudinal thread 11 is opposite the underside MS of the two remaining individual threads 3 ", 3 '", which are otherwise arranged set back from the tangent line T (see Figure 2), shielded.
  • the Anbindestellen A are located in this first embodiment, so that e-webelage at this point in the bottom 20 for a G a transverse thread 22 on its screen the underside MS facing side from a bundle of threads 23 or from the individual threads 3 ', 3 ", 3"' of this bundle of threads 23 and on the other hand above this transverse thread 22 the middle of three transverse threads 12 is arranged. These three transverse threads are crossed on their upper side facing the upper side PS of the screen by a longitudinal thread or by integrated individual threads 3 '.
  • 1 shows two of the practically inconspicuous connection points A along the two bundles of threads 23 shown.
  • the double or staple connection is formed on the one hand - as previously formed by the longitudinal thread 11 which is led down and tied there, and on the other hand is formed here by the single longitudinal thread 3 ".
  • the second and third exemplary embodiments shown in FIGS. 4 and 5 as a longitudinal thread section represent variants of the first exemplary embodiment. They differ from the latter only in the area of the connection points A.
  • the individual threads 3 are not integrated in the upper fabric layer 10 here, but instead only on the transverse thread 12, which is arranged directly above a transverse thread 22, which is crossed or undermined by a bundle of threads 23 on the underside or the underside of the sieve MS. This results in a double or staple connection of the two fabric layers 10, 20 in which the free thread lengths of the longitudinal thread 11 extending between the upper and lower fabric layers 10, 20 are shorter.
  • the fourth and fifth exemplary embodiments shown as a longitudinal section in FIGS. 6 and 7 differ from the preceding exemplary embodiments primarily in the type of connection.
  • a single connection is provided by a single filament 3 in the upper fabric layer 10 to the Anbindestellen A.
  • the individual thread (s) 3 'integrated in the upper fabric layer 10 also take off in the fourth and fifth layers in the upper fabric layer 10. for example the position of a longitudinal thread 11. It is also running on the Anbindestellen A replacement of an L jossfadens 11 by a single thread 3 'instead.
  • connection of the upper fabric layer 10 and the lower fabric layer 20 at each connection point takes place exclusively via individual threads 3 or 3 ', 3 ", 3"' of thread bundles 23 running in the longitudinal direction MD of the sieve, each of which connects to the Place a longitudinal thread 21 in the lower fabric layer 20.
  • the two fabric layers 10, 20 are connected via individual threads 3 or 3 ', 3 ", 3"' of thread bundles 23 running in the transverse direction CD of the sieve, each of which is the location of a transverse thread 22 in the lower fabric layer 20 have taken.
  • connection is perceived only by single thread 3 running in the transverse direction CD. Or in other words: Im
  • the connection is perceived only by single thread 3 running in the transverse direction CD.
  • not some of the longitudinal threads 21, but rather some of the transverse threads 22 are formed as thread bundles 23 and their individual threads 3 are used to connect and connect the fabric layers 10, 20.
  • a combined, particularly stabilizing connection is provided, because here there is both a connection by means of individual threads 3 or 3 ', 3 ", 3"' running in the transverse direction CD (see FIG. 8) and 9), as well as a connection by means of individual threads 3 or 3 ', 3' ', 3' '' running in the longitudinal direction MD.

Landscapes

  • Paper (AREA)
  • Woven Fabrics (AREA)
EP84108280A 1983-07-16 1984-07-13 Tamis à plusieurs couches, en particulier pour la partie humide d'une machine à papier Expired EP0131940B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84108280T ATE30255T1 (de) 1983-07-16 1984-07-13 Mehrlagiges entwaesserungssieb, insbesondere fuer den blattbildungsteil einer papiermaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3325780 1983-07-16
DE3325780 1983-07-16

Publications (3)

Publication Number Publication Date
EP0131940A2 true EP0131940A2 (fr) 1985-01-23
EP0131940A3 EP0131940A3 (en) 1985-07-03
EP0131940B1 EP0131940B1 (fr) 1987-10-14

Family

ID=6204209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108280A Expired EP0131940B1 (fr) 1983-07-16 1984-07-13 Tamis à plusieurs couches, en particulier pour la partie humide d'une machine à papier

Country Status (4)

Country Link
EP (1) EP0131940B1 (fr)
AT (1) ATE30255T1 (fr)
CA (1) CA1226463A (fr)
DE (1) DE3466787D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3615304A1 (de) * 1986-05-06 1987-11-12 Wangner Gmbh Co Kg Hermann Bespannung fuer den blattbildungsteil einer papiermaschine
DE3903198A1 (de) * 1989-02-03 1990-08-09 Kufferath Andreas Gmbh Mehrlagiges siebgewebe einer papiermaschine
EP0654559A3 (fr) * 1993-10-08 1995-09-06 Asten Group Tissu de formage à deux couches ayant un nombre de fils transversaux dans la couche supérieure égal à trois fois ou plus le nombre dans la couche inférieure.
EP0716183A3 (fr) * 1994-12-07 1997-07-09 Albany Int Corp Tissu pour la fabrication du papier
EP3476989A4 (fr) * 2016-09-06 2020-03-11 Nippon Filcon Co., Ltd Tissu industriel à deux couches

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127308A (en) * 1964-03-31 Dual wire dewatering apparatus
FR1011897A (fr) * 1949-04-13 1952-07-01 Bricq & Cie Ets Nouveau tissu et ses applications en particulier pour la confection d'un feutre sécheur pour papeterie
SE420852B (sv) * 1978-06-12 1981-11-02 Nordiskafilt Ab Formeringsvira
DE3036409C2 (de) * 1980-09-26 1983-01-20 Hermann Wangner Gmbh & Co Kg, 7410 Reutlingen Doppellagiges Sieb für den Siebteil einer Papiermaschine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3615304A1 (de) * 1986-05-06 1987-11-12 Wangner Gmbh Co Kg Hermann Bespannung fuer den blattbildungsteil einer papiermaschine
DE3903198A1 (de) * 1989-02-03 1990-08-09 Kufferath Andreas Gmbh Mehrlagiges siebgewebe einer papiermaschine
DE3903198C2 (de) * 1989-02-03 1999-11-18 Kufferath Andreas Gmbh Mehrlagiges Siebgewebe einer Papiermaschine
EP0654559A3 (fr) * 1993-10-08 1995-09-06 Asten Group Tissu de formage à deux couches ayant un nombre de fils transversaux dans la couche supérieure égal à trois fois ou plus le nombre dans la couche inférieure.
AU679552B2 (en) * 1993-10-08 1997-07-03 Astenjohnson, Inc. Two-ply forming fabric with three or more times as many CMD yarns in the top ply than in the bottom ply
EP0716183A3 (fr) * 1994-12-07 1997-07-09 Albany Int Corp Tissu pour la fabrication du papier
EP3476989A4 (fr) * 2016-09-06 2020-03-11 Nippon Filcon Co., Ltd Tissu industriel à deux couches

Also Published As

Publication number Publication date
DE3466787D1 (en) 1987-11-19
ATE30255T1 (de) 1987-10-15
EP0131940A3 (en) 1985-07-03
EP0131940B1 (fr) 1987-10-14
CA1226463A (fr) 1987-09-08

Similar Documents

Publication Publication Date Title
EP0264001B1 (fr) Toile à deux couches pour machine à papier comprenant un côté machine à structure grosse et un côté papier à structure fine
DE60008999T2 (de) Dreilagiges Papiermaschinensieb
EP0114656B1 (fr) Tissu composite comme habillage pour le dispositif de formation de feuille d'une machine à papier
EP0116945B1 (fr) Tissu de revêtement pour la partie humide d'une machine à papier
EP0048962B2 (fr) Tamis double pour la section de transformation en feuille d'une machine à papier
EP0432413B1 (fr) Tissu combiné pour toiles pour machine à papier
EP0097966B1 (fr) Tissu combiné pour machines à papier
DE69724298T2 (de) Mehrschichtiges Formiergewebe mit in der Papierseite integrierten Nähfadenpaaren
EP0144530B2 (fr) Toile pour machine à papier
DE60129391T2 (de) Dreischichtige Papiermaschinegewebe
DE69909628T2 (de) Doppellagiges formiergewebe für papiermaschinen
DE2735750A1 (de) Papiermachergewebe
EP0224276A2 (fr) Toile pour la partie humide d'une machine à papier
EP2922995B1 (fr) Toile pour machine a papier ayant des flottes de longueur differente sur la face machine
EP0590288B1 (fr) Toile de presse à plusieurs couches pour la presse humide d'une machine à papier
DE2902880A1 (de) Mehrlagiges, endlosgemachtes entwaesserungssieb und verfahren zum endlosmachen eines mehrlagigen entwaesserungssiebes
EP2898144B1 (fr) Toile de machine a papier
DE102011054163B3 (de) Papiermaschinensieb
EP0131940B1 (fr) Tamis à plusieurs couches, en particulier pour la partie humide d'une machine à papier
EP0889160B1 (fr) Toile pour machine à papier
EP0349779B1 (fr) Tissu à deux couches pour l'utilisation dans la partie humide d'une machine à papier
DE2455185A1 (de) Gewebe zur herstellung von papier
WO2010049304A1 (fr) Toile de formation
DE3425808A1 (de) Mehrlagiges entwaesserungssieb, insbesondere fuer den blattbildungsteil einer papiermaschine
EP0390005B1 (fr) Toile à plusieurs couches pour machine à papier

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

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

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

17P Request for examination filed

Effective date: 19850702

17Q First examination report despatched

Effective date: 19860724

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

Owner name: ANDREAS KUFFERATH GMBH & CO KG

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 LU NL SE

REF Corresponds to:

Ref document number: 30255

Country of ref document: AT

Date of ref document: 19871015

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3466787

Country of ref document: DE

Date of ref document: 19871119

ITF It: translation for a ep patent filed
ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
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: 19880731

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
ITTA It: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 84108280.3

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: 20030620

Year of fee payment: 20

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

Ref country code: NL

Payment date: 20030721

Year of fee payment: 20

Ref country code: FR

Payment date: 20030721

Year of fee payment: 20

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

Ref country code: AT

Payment date: 20030725

Year of fee payment: 20

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

Ref country code: SE

Payment date: 20030728

Year of fee payment: 20

Ref country code: CH

Payment date: 20030728

Year of fee payment: 20

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

Ref country code: BE

Payment date: 20030729

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: 20031219

Year of fee payment: 20

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 EXPIRATION OF PROTECTION

Effective date: 20040712

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20040712

Ref country code: CH

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20040712

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20040713

Ref country code: AT

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20040713

BE20 Be: patent expired

Owner name: *ANDREAS KUFFERATH G.M.B.H. & CO. K.G.

Effective date: 20040713

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed
NLV7 Nl: ceased due to reaching the maximum lifetime of a patent

Effective date: 20040713