EP0790109A1 - Une méthode ainsi qu'un outil d'estampage et rainurage pour la fabrication de pièces découpées et rainurées - Google Patents

Une méthode ainsi qu'un outil d'estampage et rainurage pour la fabrication de pièces découpées et rainurées Download PDF

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Publication number
EP0790109A1
EP0790109A1 EP19970102095 EP97102095A EP0790109A1 EP 0790109 A1 EP0790109 A1 EP 0790109A1 EP 19970102095 EP19970102095 EP 19970102095 EP 97102095 A EP97102095 A EP 97102095A EP 0790109 A1 EP0790109 A1 EP 0790109A1
Authority
EP
European Patent Office
Prior art keywords
creasing
punching
plate
elements
carrier plate
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
EP19970102095
Other languages
German (de)
English (en)
Other versions
EP0790109B1 (fr
Inventor
Rolf Sinn
Wolfgang Prof. Dr. Grebe
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.)
Karl Marbach GmbH and Co KG
Original Assignee
Karl Marbach 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
Priority claimed from DE19610574A external-priority patent/DE19610574C5/de
Application filed by Karl Marbach GmbH and Co KG filed Critical Karl Marbach GmbH and Co KG
Publication of EP0790109A1 publication Critical patent/EP0790109A1/fr
Application granted granted Critical
Publication of EP0790109B1 publication Critical patent/EP0790109B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/08—Creasing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4445—Matrices, female dies, creasing tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/16—Cutting webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/25—Surface scoring
    • B31B50/252—Surface scoring using presses or dies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/06—Blanking

Definitions

  • the invention relates to a method and a punching and creasing tool for producing grooved stamped parts according to the preambles of claims 1 and 3 respectively.
  • Folding box blanks made of cardboard are usually given creases, which give the folding boxes their defined shape when they are later erected.
  • the contours as well as the necessary incisions of the folding box blank are created by punching.
  • the production takes place by means of band steel stamping and creasing tools on flat bed or rotary stamping.
  • the band steel punching and creasing tools usually consist of a carrier plate, for example made of wood, bonded from plastics with glass fabric or reinforced in a sandwich construction with metal plates. Slots are made in these carrier plates in accordance with the box contours, in which punching or creasing lines are received.
  • the punched lines either protrude as far as or farther from the carrier plate than the crease lines.
  • the punching lines work against a punching plate, mainly made of steel.
  • the creasing lines create a creasing bead in the folding box material by pressing the material into a creasing groove. These creasing grooves can be milled into the punching plate or as a structure on the punching plate to be appropriate.
  • the punching and creasing process is problematic in the known punching and creasing tools, since the material is not drawn into the corresponding creasing groove by the creasing line until the punching process has already started, i.e. the punching lines have already entered the box.
  • the tensile stresses in the material thus cause the cutting process to become a cutting-tearing process, which negatively affects the quality of the cut.
  • the crease bead is itself subject to tensile stresses caused by the adjacent cutting lines. Since punching and creasing lines are arranged symmetrically in a folding box blank only in exceptional cases, they are on the Creasing tensile stresses are usually asymmetrical, which leads to asymmetry or skewing of the creasing bead depending on the distance between the adjacent lines and greatly impairs the folding behavior.
  • the limits of punching and creasing are thus predetermined depending on the material to be cut and the geometry of the box. In particular, the quality of the creasing bead is of crucial importance for the subsequent folding processes in high-speed folding carton gluing and packaging machines.
  • the invention has for its object to provide a method and a punching and creasing tool with which grooved stamped parts can be produced with high quality.
  • This object is achieved on the basis of the generic prior art in that the formation of creases in the material sheet is started before the punching process is initiated.
  • the punching process is preferably initiated when the material has been drawn into the creasing grooves.
  • the punching lines are only attacked after the creasing lines have been engaged, and if possible only when the material has been drawn into the creasing groove by the creasing lines. This avoids stresses in the material when the crease lines are formed, so that the crease lines are of high quality.
  • the rigid connection of the punching and creasing is removed, so that it is possible to perform the creasing and punching at different times in one working stroke.
  • the carrier plate only receives the slots for the punching lines. This significantly increases the rigidity of the entire tool.
  • the compression of the material in the groove area can be set depending on the type and thickness of the cardboard to be scored and the groove depth.
  • the creasing elements can resiliently rest on the material to be creased, so that it is possible to achieve a uniform, constant creasing depth regardless of the wear of the punching elements.
  • the geometric conditions such as the difference in height between the punching elements and the creasing elements, depend on the material thickness of the material to be cut and the creasing parameters, i.e. the groove depth in relation to the material thickness, from which material compression is derived, which is of decisive influence for the formation of the creasing bead.
  • the folded edge of the box is fixed by the compressed impression of the creasing elements.
  • the possibility of compression can be used here for the first time since punching and creasing elements work independently of one another and the height wear of the punching elements during production does not affect the height ratio of punching and creasing elements, as was previously the case with punching and creasing tools. It has the further advantage that the groove depths can be created in the punch-groove plate with less effort. The grooves can also be kept narrower. This is for the folded edges of the folding boxes very beneficial.
  • the creasing elements are preferably formed by creasing projections which are provided on the underside of a creasing plate which is elastically mounted on or in the carrier plate.
  • the scoring plate is expediently mounted on the carrier plate by means of an elastomer plate which is arranged between the scoring plate and the carrier plate.
  • the grooved plate can be guided in the stroke direction through centering bolts that are attached to the carrier plate.
  • creasing grooves are NC-controlled in the punching-creasing plates with the same program as the slots for the punching-creasing lines in the carrier plate. But by driving the lines into the slots, there are tensions that lead to dimensional deviations of the creasing lines in the carrier plate and the creasing grooves in the punch-creasing plate, so that the creasing lines have to be adjusted by hand, which is very costly. This source of error has been eliminated with the new process via the own grooved plate.
  • the scoring plate can also take on the function of a hold-down plate and scraper plate.
  • the punching and creasing tool 1 shown in FIGS. 1 and 2 is arranged between a pressure plate 3 and a counter pressure plate 4 of a punching machine.
  • the punching and creasing tool 1 has a carrier plate 6, which is arranged horizontally in the punching machine and is connected to the pressure plate 3 and consists, for example, of wood laminate, and a punching and creasing plate 7 made of steel which is connected to the counterpressure plate 4 and which is spaced below the carrier plate 6 is arranged.
  • an elastomer plate 11 is provided on the underside of the carrier plate 6 for each use, on the underside of which a massive grooved plate 9 is applied.
  • the scoring plate 9 is provided on its underside facing the punching-scoring plate 7 with scoring projections (scoring elements) 10a and 10b.
  • the free ends of the creasing projections 10a, 10b extend further downward from the carrier plate 6 than the free ends of the punching knives 2a, 2b, ie their distance from the punching-creasing plate 7 is less than that of the punching knives 2a , 2 B.
  • the grooved plate 9 can consist of metal, plastic or composite material.
  • the grooved projections 10a, 10b can be formed by milling out, etching out, by inserting strips or plates into the grooved plate 9.
  • the crease plate 9 creates the advantage that a precise placement of the individual crease elements 10a, 10b is determined not by the carrier plate 6, but by the manufacture of the crease plate 9.
  • the creasing projections 10a, 10b are formed opposite creasing grooves 8a and 8b, into which the creasing projections 10a and 10b press folding box material during the stamping-creasing process.
  • the grooved plate 9 is provided with centering holes 13, in each of which a centering pin 14 is slidably guided, which passes through the elastomer plate 11 and is inserted into a bore 12 in the carrier plate 6.
  • the centering bolts 14 ensure exact centering of the creasing projections 10a, 10b of the creasing plate 9 with respect to the corresponding creasing grooves 8a and 8b, so that the best possible symmetrical assignment of the creasing projections 10a, 10b and creasing grooves 8a, 8b is achieved.
  • Centering holes 15 are provided in the punching-creasing plate 15, in which centering pins engage during the fixing, for the dimensionally accurate fixing of the creasing plate 9 when the punching and creasing tool 1 is set up.
  • the corresponding centering holes 12 are provided in the carrier plate 6 and the grooving plate 9 is fixed on the carrier plate 6 by means of the centering pins 14.
  • the creasing projections 10a, 10b project further from the carrier plate 6 than the punching knives 2a, 2b by the amount A (e.g. 0.3 mm).
  • the distance between the creasing projections 10a, 10b from the punching-creasing plate 7 is sufficient to insert a cardboard sheet 5 (FIG. 2) between the creasing plate 9 and the punching-creasing plate 7.
  • the punching machine After insertion of the cardboard sheet 5, the punching machine is closed, the pressure plate 3 with the carrier plate 6 moving in the direction of the punching-scoring plate 7 until the end position shown in FIG. 2 is reached, in which the punching knives 2a, 2b cut the cardboard and the creases 10a, 10b have embossed grooves.
  • FIG 3 shows the distance between the creasing projections 10a, 10b and the punching knives 2a, 2b during the punching and creasing process with the punching and creasing tool 1 according to the invention in a time-path diagram.
  • the creasing projections 10a, 10b are at the height R0.
  • the free ends of the punching knives 2a, 2b are at this time by the distance A (FIG. 1) above the height R0 of the cardboard surface at the height S0.
  • the distance A between the free ends of the punching knives 2a, 2b and the free ends of the creasing projections 10a, 10b is constant, ie the punching knives 2a, 2b and the creasing projections 10a, 10b are moved synchronously.
  • the creasing projections 10a, 10b have drawn the cardboard into the creasing grooves 8a, 8b at the time t m .
  • the resistance from the carton during this retraction is up to Time t m is less than the restoring force of the elastomer plate 11.
  • the punching knives 2a, 2b and the creasing projections 10a, 10b move differently, since the resistance opposed to the creasing projections 10a, 10b due to the compression of the carton in Connection with the reaction force of the grooved grooves 8a, 8b is greater than the restoring force of the elastomer plate 11, so that the elastomer plate 11 is compressed.
  • the creasing projections 10a, 10b only move by the amount B from the time t m to the time t e , at which the punching knives 2a, 2b hit the punching-grooving plate 7 (FIG. 2), while the punching knives 2a, 2b are linear move through the box by the amount C that corresponds to the thickness of the box.
  • the punched-grooved plate 7 can be formed in one piece with the counter-pressure plate 4.
  • the groove depth 17 depends on the punched material. It can be selected in such a way that compression occurs, but it is equally possible to work with a groove groove depth 17 which does not lead to any compression.
  • the conventional punching technique works with the punch-crease plate, in which the creasing grooves are made in the punching plate. In many cases, however, separately produced creasing grooves are also attached to the creasing lines and glued to the stamping plate. This technique is of course also possible with the new punch-creasing process.
  • the method according to the invention and the punching and creasing tool according to the invention are described with reference to the production of a folding box blank from a cardboard box. However, they can be used for all punching and creasing work that are carried out with a die on cardboard, cardboard, corrugated cardboard, plastic or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Making Paper Articles (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)
EP19970102095 1996-02-16 1997-02-10 Une méthode ainsi qu'un outil d'estampage et rainurage pour la fabrication de pièces découpées et rainurées Expired - Lifetime EP0790109B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19605850 1996-02-16
DE19605850 1996-02-16
DE19610574 1996-03-18
DE19610574A DE19610574C5 (de) 1996-02-16 1996-03-18 Verfahren und Stanz- und Rillwerkzeug zur Herstellung von gerillten Stanzteilen

Publications (2)

Publication Number Publication Date
EP0790109A1 true EP0790109A1 (fr) 1997-08-20
EP0790109B1 EP0790109B1 (fr) 2002-06-05

Family

ID=26022973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970102095 Expired - Lifetime EP0790109B1 (fr) 1996-02-16 1997-02-10 Une méthode ainsi qu'un outil d'estampage et rainurage pour la fabrication de pièces découpées et rainurées

Country Status (10)

Country Link
US (1) US6106453A (fr)
EP (1) EP0790109B1 (fr)
JP (1) JPH09323368A (fr)
AT (1) ATE218419T1 (fr)
CZ (1) CZ43297A3 (fr)
DK (1) DK0790109T3 (fr)
ES (1) ES2177839T3 (fr)
NO (1) NO311560B1 (fr)
PL (1) PL181715B1 (fr)
SK (1) SK14797A3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
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WO2002072322A2 (fr) * 2001-03-08 2002-09-19 Jordan, David, Hedley Machines a estamper ameliorees
EP1457297A2 (fr) * 2003-03-11 2004-09-15 Karl Linhardt GmbH Dispositif de gaufrage et/ou de découpe d'une pièce
CN103753639A (zh) * 2011-12-31 2014-04-30 东莞市飞新达精密机械科技有限公司 一种模切主机
CN108656638A (zh) * 2018-04-18 2018-10-16 田泽 一种纸板快速压痕装置

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JP2000127259A (ja) * 1998-10-26 2000-05-09 Sakamoto Seisakusho:Kk 成型シートの罫線形成用の受体及び該受体を含む成型シートの打ち抜き装置
ES2215082T3 (es) * 1999-12-10 2004-10-01 Rohrer Ag Dispositivo de entalladura para cortar materiales de embalaje.
JP2003181956A (ja) * 2001-12-14 2003-07-03 Toppan Printing Co Ltd 打抜き型および型抜きされてなるインモールドラベル
DK175027B1 (da) * 2002-02-13 2004-05-03 Inter Ikea Sys Bv Maskine til udstansning af bølgepapemner og samtidig påføring af bukkelinier på emnerne
DE10303178A1 (de) * 2003-01-28 2004-07-29 Heidelberger Druckmaschinen Ag Stanz- und Rill-Gegendruckplatte und Verfahren zu deren Herstellung und Gebrauch sowie damit ausgestattete Maschine
US20050161297A1 (en) * 2004-01-23 2005-07-28 Innovative Technologies, Llc Brake pad backing plate and method of making the same
WO2005090064A1 (fr) * 2004-03-16 2005-09-29 Ellison Educational Equipmet, Inc. Outil de gaufrage et de moulure
ITBO20040222A1 (it) * 2004-04-19 2004-07-19 Gd Spa Unita' di taglio di sbozzati di colari di pacchetti rigidi per sigarette
JP4531450B2 (ja) * 2004-06-08 2010-08-25 有限会社紙工舎 板紙及び段ボール用打ち抜き機
BE1016747A3 (nl) * 2005-09-27 2007-05-08 Rillivo Bv Met Beperkte Aanspr Verbeterde stansrilplaat.
EP2036659B1 (fr) * 2007-09-12 2010-12-01 Foppa Fustelle S.r.l. Procédé pour la manufacture d'une contre matrice pour la coupe de carton
GR1006473B (el) * 2008-02-14 2009-07-08 Αλεξανδρος Ιωαννη Χανας Εργαλειο διαμορφωσης αναγλυφου επι προϊοντων χαρτου και μεθοδος ενσωματωσης του ιδιου σε μητρα κοπης και πτυχωσης
DE102008034764A1 (de) * 2008-07-25 2010-01-28 Heidelberger Druckmaschinen Ag Werkzeug für eine Bogenstanzmaschine
IT1391072B1 (it) * 2008-10-16 2011-11-18 Quality Tools Srl Attrezzatura e metodo per la formatura di contenitori in carta
JP2011031515A (ja) * 2009-08-03 2011-02-17 Nippon Die Steel Kk 罫入れ装置および罫入れ装置におけるカウンタプレート
DE102010019839A1 (de) * 2010-05-07 2011-11-10 Franz Vossen Niederhalteeinrichtung für eine Stanzform und Verfahren zum Ausstanzen einer Öffnung oder Abtrennung mehrerer Lagen eines Kartons, Wellpappe oder dgl.
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JP6436377B2 (ja) * 2014-02-05 2018-12-12 大日本印刷株式会社 ブランク板、ブランク板の製造方法および容器
JP6467791B2 (ja) * 2014-06-19 2019-02-13 大日本印刷株式会社 ブランク製造方法およびブランクを製造するための打抜機
AT516027B1 (de) * 2014-09-01 2016-02-15 Böhler Uddeholm Prec Strip Gmbh Werkzeug zur Herstellung von Falzlinien
CN107922091B (zh) * 2015-08-18 2020-02-18 凸版印刷株式会社 纸容器及其制造方法
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ITUB20161084A1 (it) * 2016-02-26 2017-08-26 K G S S R L Unipersonale Dispositivo di cordonatura per la realizzazione di cordoni di piegatura in articoli cartotecnici e di legatoria, nonche' macchina comprendente tale dispositivo
EP3246140B1 (fr) * 2016-05-16 2019-06-26 Tetra Laval Holdings & Finance S.A. Unité de coupe et procédé de coupe
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US11938699B2 (en) 2021-07-07 2024-03-26 Brown Llc Methods and systems for producing pressware
US11919270B2 (en) 2021-07-07 2024-03-05 Brown Llc Methods and systems for producing pressware
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US11945670B2 (en) 2021-07-07 2024-04-02 Brown Llc Methods and systems for producing pressware
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US4850950A (en) * 1987-10-28 1989-07-25 Ameritek Lasercut Dies, Inc. Adjustable mounting for embossing die elements
DE3831393A1 (de) 1988-09-15 1990-03-22 Wolfgang Prof Dr Ing Grebe Traegerplatte
DE3928916C1 (fr) 1989-08-31 1991-01-24 Karl Marbach Gmbh & Co, 7100 Heilbronn, De
NL9002692A (nl) * 1990-12-06 1992-07-01 Okke Michiel Van Geene Werkwijze en inrichting voor het bewerken van plaatvormig materiaal.

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Publication number Priority date Publication date Assignee Title
US1661807A (en) * 1926-07-02 1928-03-06 Jr Charles A Messmer Die
US2663180A (en) * 1952-04-23 1953-12-22 Amity Leather Prod Co Die for cutting and impressing relatively thin leather
FR2315368A1 (fr) * 1975-06-23 1977-01-21 Roeder & Spengler Stanz Outil de decoupage pour cartonnages pliants et son procede de fabrication
US4850950A (en) * 1987-10-28 1989-07-25 Ameritek Lasercut Dies, Inc. Adjustable mounting for embossing die elements
DE3831393A1 (de) 1988-09-15 1990-03-22 Wolfgang Prof Dr Ing Grebe Traegerplatte
DE3928916C1 (fr) 1989-08-31 1991-01-24 Karl Marbach Gmbh & Co, 7100 Heilbronn, De
NL9002692A (nl) * 1990-12-06 1992-07-01 Okke Michiel Van Geene Werkwijze en inrichting voor het bewerken van plaatvormig materiaal.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002072322A2 (fr) * 2001-03-08 2002-09-19 Jordan, David, Hedley Machines a estamper ameliorees
WO2002072322A3 (fr) * 2001-03-08 2003-05-22 David Brian Boulton Machines a estamper ameliorees
EP1457297A2 (fr) * 2003-03-11 2004-09-15 Karl Linhardt GmbH Dispositif de gaufrage et/ou de découpe d'une pièce
EP1457297A3 (fr) * 2003-03-11 2005-03-16 Karl Linhardt GmbH Dispositif de gaufrage et/ou de découpe d'une pièce
CN103753639A (zh) * 2011-12-31 2014-04-30 东莞市飞新达精密机械科技有限公司 一种模切主机
CN108656638A (zh) * 2018-04-18 2018-10-16 田泽 一种纸板快速压痕装置

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EP0790109B1 (fr) 2002-06-05
NO311560B1 (no) 2001-12-10
US6106453A (en) 2000-08-22
ES2177839T3 (es) 2002-12-16
NO970377L (no) 1997-08-18
PL318489A1 (en) 1997-08-18
JPH09323368A (ja) 1997-12-16
ATE218419T1 (de) 2002-06-15
SK14797A3 (en) 1998-06-03
NO970377D0 (no) 1997-01-29
PL181715B1 (pl) 2001-09-28
CZ43297A3 (en) 1997-09-17
DK0790109T3 (da) 2002-09-16

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