EP1121243A1 - Device for stamping groove lines on corrugated board - Google Patents

Device for stamping groove lines on corrugated board

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Publication number
EP1121243A1
EP1121243A1 EP99953815A EP99953815A EP1121243A1 EP 1121243 A1 EP1121243 A1 EP 1121243A1 EP 99953815 A EP99953815 A EP 99953815A EP 99953815 A EP99953815 A EP 99953815A EP 1121243 A1 EP1121243 A1 EP 1121243A1
Authority
EP
European Patent Office
Prior art keywords
creasing
transport body
transport
combined
ring
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
EP99953815A
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German (de)
French (fr)
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EP1121243B1 (en
Inventor
Harald Gehle
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Individual
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Individual
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Publication of EP1121243A1 publication Critical patent/EP1121243A1/en
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Publication of EP1121243B1 publication Critical patent/EP1121243B1/en
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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
    • B31F1/10—Creasing by rotary 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
    • B31B50/25—Surface scoring
    • B31B50/254—Surface scoring using tools mounted on belts or chains

Definitions

  • the invention relates to a device for scoring corrugated cardboard in processing machines according to the preamble of patent claim 1.
  • creases are automatically produced using creasing knives or creasing rings in the direction of material travel.
  • the creases which will later be responsible for folding the blank, are particularly critical and, according to the current state of the art, produce uncontrolled gap widths in the finished folding box. This results solely from the not perfect grooving.
  • the creasing is carried out in the direction of the corrugated cardboard and thus along the corrugations of the cardboard, and this means that there are always different conditions from corrugation to corrugation tip. Since the folding takes place via belts, if the shaft is not 100% shaped, there is a somewhat backward folding, which is referred to as "fish-tailing".
  • the degree of creasing is also influenced by the paper quality used. Light or recycled qualities only allow a lower level because these types of paper become easily cracked and thus reduce the resilience of the folding box.
  • DE 31 38 454 C2 discloses a device and a method for embossing grooves in corrugated cardboard for folding and adhering to the cardboard dimensions for corrugated cardboard creasing machines.
  • the corrugated cardboard or the cardboard to be grooved is passed between two rollers and thereby grooved.
  • the distance between the two rollers is set beforehand so that the correct pressure is given to the material to be creased.
  • a method and a device for producing blanks for folding boxes are known, the blank being guided in succession with the aid of a transport device through an insertion station, an embossing station, a cooling station, a punching station and a removal station.
  • a machine is referred to as an inline machine since several operations are carried out in one and the same machine.
  • the stamping station has a hydraulically or mechanically driven stamping press with a fixed lower plate and a vertically movable upper pressure plate. Both plates have heating plates whose temperature can be set independently of one another. Since the heating plates are attached to the embossing tool, the embossing or creasing is always carried out simultaneously with the heating and thus in stationary operation.
  • the machine must therefore work intermittently, ie the transport device must first guide a blank under the embossing tool, then stop to close the embossing tool and keep it closed until the heating plates have heated sufficiently. Then the embossing force is increased to emboss the embossing lines. The embossing tool then opens and the transport device which starts again conveys the cut sheet thus grooved to the cooling station.
  • a disadvantage of this known device and the method that can be carried out with it is that the transport device has to start and brake again and again, which requires energy-intensive acceleration and braking of not inconsiderable masses. This is subject to natural speed limits.
  • DE 195 38512 A1 discloses a method and a device for embossing crease lines in corrugated cardboard for better folding and compliance with the box dimensions for inline machines.
  • the part of the corrugated cardboard intended for the creasing is heated with the aid of a heated table immediately before the creasing or during the creasing itself.
  • the object of the invention is to provide a device with which a more precise corrugation of corrugated cardboard than in the prior art for the subsequent production of folding boxes can be achieved.
  • a device with the features of claim 1 is used to achieve this object.
  • the corrugated cardboard is thus transported with a rotating ring, the actual creasing is characterized by a number of straight lines which varies depending on the outer diameter of the ring.
  • the invention is explained in more detail below with the aid of a drawing.
  • FIG 1 shows schematically an embodiment
  • FIG. 2 shows a section A from the creasing body from FIG. 1.
  • Figure 1 shows schematically an upper and lower transport body 1 and 2 in a pressure folding and gluing machine for corrugated cardboard 3, which is also generally referred to as an in-line machine. These transport bodies 1, 2 are necessary for the clocked feed within the machine.
  • the transport bodies 1 and 2 are mounted in a known manner on driven shafts in an in-line machine.
  • One of these transport bodies 1 or 2 depending on the machine design for top or bottom pressure, is provided on its circumference 4 with a varying number of straight flat pieces 10, 10 'and 10 ", which are evenly distributed over the circumference 4 and give the transport body 1 the appearance of a multi-key or polygon in the view.
  • These straight flat pieces 10, 10 ', 10 " are between 5 mm and 25 mm long, depending on the outer diameter of the transport body 1.
  • the combined creasing and transport body 1 provided with these straight flat pieces 10, 10 ', 10 " is usually made of steel or cast iron and presses the part of the corrugated cardboard 3 to be creased against the outer circumference of the lower transport body 2, referred to as the counter body, which either has a steel or polyurethane tread.
  • the combined creasing and transport body 1 accordingly has a polygonal creasing ring 11 which protrudes about 1 to 4 mm over the circumference 4 of its circular transport body 1 and has a width of 0.5 to 4 mm, the edges being rounded.
  • the outer contour over the largest circumference 4 of the combined creasing and transporting body 1 is thus that of a regular polygon with, for example, 70 corners, which cannot be seen from FIG. 1, since this only shows the creasing ring schematically.
  • FIG. 2 shows an enlarged detail A from FIG. 1, in which the straight course of the flat pieces 10, 10 ', 10 "can be better recognized.
  • the circumference 4 of the transport body 1 thus extends as an arc, while the outer contour of the flat pieces 10, 10', 10 "between points B and C as well as straight to the right and left of it.

Abstract

The invention relates to a device for stamping groove lines on corrugated board to better fold and comply with the sizes of boxes in production and processing machines having a combined grooving and transport, body (1) and a counter-body. The combined grooving and transport body (1) is fitted on its periphery with a grooving ring (11) having straight individual surfaces, said ring having the shape of a regular polygon with straight flat pieces whose number varies due to the different peripheries.

Description

Vorrichtuno; zur Ausprägung; von Rillinien in Wellpappe Device; for expression; of creasing lines in corrugated cardboard
Die Erfindung betrifft eine Vorrichtung zur Rillung von Wellpappe in Verarbeitungsmaschinen gemäß Oberbegriff des Patentanspruchs 1.The invention relates to a device for scoring corrugated cardboard in processing machines according to the preamble of patent claim 1.
In der Wellpappenindustrie werden Rillungen über Rillmesseroder Rillringe in Materiallaufrichtung automatisch hergestellt. Dabei sind die Rillungen, die später für die Faltung des Zuschnittes zuständig sind, besonders kritisch und erzeugen nach heutigem Stand der Technik unkontrollierte Spaltbreiten bei der fertigen Faltschachtel. Dieses ergibt sich allein aus der nicht einwandfreien Rillung.In the corrugated cardboard industry, creases are automatically produced using creasing knives or creasing rings in the direction of material travel. The creases, which will later be responsible for folding the blank, are particularly critical and, according to the current state of the art, produce uncontrolled gap widths in the finished folding box. This results solely from the not perfect grooving.
Die Rillung wird in Laufrichtung der Wellpappe und damit längs zu den Karton-Wellen ausgeführt und trifft dadurch von Wellental zu Wellenspitze auf immer andere Bedingungen. Da die Faltung über Gurte erfolgt, ergibt sich bei einer nicht 100%igen Ausprägung der Welle eine etwas nach hinten verlaufende Faltung, die als sogenanntes "fish-tailing" bezeichnet wird.The creasing is carried out in the direction of the corrugated cardboard and thus along the corrugations of the cardboard, and this means that there are always different conditions from corrugation to corrugation tip. Since the folding takes place via belts, if the shaft is not 100% shaped, there is a somewhat backward folding, which is referred to as "fish-tailing".
Die Ausprägung der Rillung wird außerdem von der verwendeten Papierqualität beeinflußt. Leichte bzw. recykelte Qualitäten lassen nur eine geringere Ausprägung zu, da diese Papiersorten leicht rissig werden und damit die Belastbarkeit der Faltschachtel mindern.The degree of creasing is also influenced by the paper quality used. Light or recycled qualities only allow a lower level because these types of paper become easily cracked and thus reduce the resilience of the folding box.
Aus der DE 31 38 454 C2 sind eine Vorrichtung und ein Verfahren zur Ausprägung von Rillen in Wellpappe für die Faltung und Einhaltung der Kartonabmessungen für Wellpappen-Rillmaschinen bekannt. Dabei wird die Wellpappe bzw. der mit Rillen zu versehende Karton zwischen zwei Walzen durchgeführt und dadurch gerillt. Je nach Dicke der zu rillenden Kartons wird der Abstand der beiden Walzen zuvor eingestellt, so daß dem zu rillenden Material der richtige Druck erteilt wird.DE 31 38 454 C2 discloses a device and a method for embossing grooves in corrugated cardboard for folding and adhering to the cardboard dimensions for corrugated cardboard creasing machines. The corrugated cardboard or the cardboard to be grooved is passed between two rollers and thereby grooved. Depending on the thickness of the boxes to be creased, the distance between the two rollers is set beforehand so that the correct pressure is given to the material to be creased.
Aus der DE 36 17 916 AI sind ein Verfahren und eine Vorrichtung zur Herstellung von Zuschnitten für Faltschachteln bekannt, wobei der Zuschnitt mit Hilfe einer Transportvorrichtung nacheinander durch eine Einlegestation, eine Prägestation, eine Kühlstation, eine Stanzstation und eine Entnahmestation geführt wird. Eine derartige Maschine wird als Inline-Maschine bezeichnet, da in ein und derselben Maschine mehrere Arbeitsgänge durchgeführt werden. Bei der bekannten Vorrichtung weist die Prägestation eine hydraulisch oder mechanisch angetriebene Prägepresse mit einer feststehenden Unterplatte und einer vertikal bewegbaren oberen Druckplatte auf. Beide Platten tragen Heizplatten, deren Temperatur unabhängig voneinander eingestellt werden kann. Da die Heizplatten an dem Prägewerkzeug befestigt sind, erfolgt das Prägen oder Rillen stets gleichzeitig mit dem Erwärmen und damit im stationären Betrieb. Die Maschine muß also intermittierend arbeiten, d.h., die Transportvorrichtung muß zunächst einen Zuschnittbogen unter das Prägewerkzeug führen, dann anhalten, um das Prägewerkzeug zu schließen und so lange geschlossen halten, bis von den Heizplatten eine hinreichende Erwärmung erfolgt ist. Danach wird die Prägekraft erhöht, um die Prägelinien einzuprägen. Anschließend öffnet sich das Prägewerkzeug und die erneut anlaufende Transportvorrichtung fördert den so gerillten Zuschnittbogen zur Kühlstation. Ein Nachteil dieser bekannten Vorrichtung und des damit durchführbaren Verfahrens besteht darin, daß die Transportvorrichtung immer wieder anlaufen und abbremsen muß, was eine energieaufwendige Beschleunigung und Abbremsung von nicht unbeträchtlichen Massen erfordert. Dies unterliegt natürlichen Geschwindigkeitsbegrenzungen.From DE 36 17 916 AI a method and a device for producing blanks for folding boxes are known, the blank being guided in succession with the aid of a transport device through an insertion station, an embossing station, a cooling station, a punching station and a removal station. Such a machine is referred to as an inline machine since several operations are carried out in one and the same machine. In the known device, the stamping station has a hydraulically or mechanically driven stamping press with a fixed lower plate and a vertically movable upper pressure plate. Both plates have heating plates whose temperature can be set independently of one another. Since the heating plates are attached to the embossing tool, the embossing or creasing is always carried out simultaneously with the heating and thus in stationary operation. The machine must therefore work intermittently, ie the transport device must first guide a blank under the embossing tool, then stop to close the embossing tool and keep it closed until the heating plates have heated sufficiently. Then the embossing force is increased to emboss the embossing lines. The embossing tool then opens and the transport device which starts again conveys the cut sheet thus grooved to the cooling station. A disadvantage of this known device and the method that can be carried out with it is that the transport device has to start and brake again and again, which requires energy-intensive acceleration and braking of not inconsiderable masses. This is subject to natural speed limits.
Aus der DE 195 38512 AI sind schließlich ein Verfahren und eine Vorrichtung zur Ausprägung von Rillinien in Wellpappe zur besseren Faltung und Einhaltung der Schachtelabmessungen für InLine Maschinen bekannt. Dabei wird unmittelbar vor der Rillung oder bei der Rillung selbst der für die Rillung vorgesehenen Teil der Wellpappe mit Hilfe eines beheizbaren Tisches erwärmt.Finally, DE 195 38512 A1 discloses a method and a device for embossing crease lines in corrugated cardboard for better folding and compliance with the box dimensions for inline machines. The part of the corrugated cardboard intended for the creasing is heated with the aid of a heated table immediately before the creasing or during the creasing itself.
Da bei allen bekannten Verfahren die Rillung rotatif durchgeführt wird und die Rillung zumeist in Laufrichtung der Karton- Wellen erfolgt, setzt der Rillpunkt an unterschiedlichen Stellen der Welle an. Dies ergibt große Probleme in der sogenannten Spalttoleranz, die für Automatenverpackungen sehr wichtig ist, da sie über die Faltgenauigkeit des Kartons entscheidet.Since the scoring is carried out rotatif in all known processes and the scoring mostly takes place in the running direction of the cardboard shafts, the scoring point starts at different points on the shaft. This results in major problems in the so-called gap tolerance, which is very important for machine packaging, since it determines the folding accuracy of the carton.
Aufgabe der Erfindung ist es, eine Vorrichtung zu schaffen, mit der eine genauere Rillung von Wellpappe als beim Stand der Technik für die nachfolgende Herstellung von Faltschachteln erzielt werden kann .The object of the invention is to provide a device with which a more precise corrugation of corrugated cardboard than in the prior art for the subsequent production of folding boxes can be achieved.
Zur Lösung dieser Aufgabe dient eine Vorrichtung mit den Merkmalen des Patentanspruchs 1.A device with the features of claim 1 is used to achieve this object.
Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous refinements of the invention result from the subclaims.
Bei der Erfindung wird also die Wellpappe zwar mit einem rotierenden Ring transportiert, die eigentlich Rillung wird durch eine je nach Außendurchmesser des Ringes variierende Anzahl von geraden Linien geprägt. Die Erfindung wird nachfolgend anhand einer Zeichnung näher erläutert .In the invention, the corrugated cardboard is thus transported with a rotating ring, the actual creasing is characterized by a number of straight lines which varies depending on the outer diameter of the ring. The invention is explained in more detail below with the aid of a drawing.
Figur 1 zeigt schematisch ein Ausführungsbeispiel;Figure 1 shows schematically an embodiment;
Figur 2 zeigt einen Ausschnitt A aus dem Rillkörper von Fig. 1.FIG. 2 shows a section A from the creasing body from FIG. 1.
In den Figuren sind gleiche Teile mit gleichen Bezugszeichen versehen.In the figures, the same parts are provided with the same reference symbols.
Figur 1 zeigt schematisch einen oberen und unteren Transportkörper 1 und 2 in einer Druck-Falt- und Klebemaschine für Wellpappe 3, die allgemein auch als In-Line-Maschine bezeichnet wird. Diese Transportkörper 1, 2 sind für den getakteten Vorschub innerhalb der Maschine notwendig.Figure 1 shows schematically an upper and lower transport body 1 and 2 in a pressure folding and gluing machine for corrugated cardboard 3, which is also generally referred to as an in-line machine. These transport bodies 1, 2 are necessary for the clocked feed within the machine.
Die Transportkörper 1 und 2 sind auf an sich bekannte Weise auf angetriebenen Wellen in einer In-Line Maschine montiert. Jeweils einer dieser Transportkörper 1 oder 2, und zwar je nach Maschi- nenausbildung für Obendruck oder Untendruck, ist an seinem Umfang 4 mit einer variierenden Anzahl von geraden Flachstücken 10, 10 'und 10" versehen, die gleichmäßig über den Umfang 4 verteilt sind und dem Transportkörper 1 in der Ansicht das Aussehen eines Vielkeils oder Vielecks verleihen. Diese geraden Flach- stücke 10, 10', 10" sind nach je nach Außendurchmesser des Transportkörpers 1 zwischen 5mm und 25mm lang.The transport bodies 1 and 2 are mounted in a known manner on driven shafts in an in-line machine. One of these transport bodies 1 or 2, depending on the machine design for top or bottom pressure, is provided on its circumference 4 with a varying number of straight flat pieces 10, 10 'and 10 ", which are evenly distributed over the circumference 4 and give the transport body 1 the appearance of a multi-key or polygon in the view. These straight flat pieces 10, 10 ', 10 "are between 5 mm and 25 mm long, depending on the outer diameter of the transport body 1.
Der mit diesen geraden Flachstücken 10, 10', 10" versehene kombinierte Rill- und Transportkörper 1 ist in der Regel aus Stahl oder Gußeisen hergestellt und drückt den zu rillenden Teil der Wellpappe 3 gegen den Außenumfang des als Gegenkörper bezeichneten unteren Transportkörper 2, der entweder eine Stahl- oder Polyurethan-Lauffläche hat.The combined creasing and transport body 1 provided with these straight flat pieces 10, 10 ', 10 "is usually made of steel or cast iron and presses the part of the corrugated cardboard 3 to be creased against the outer circumference of the lower transport body 2, referred to as the counter body, which either has a steel or polyurethane tread.
Dabei prägen die über den Außendurchmesser des oberen (oder unteren) Transportkörpers 1 vorhandenen geraden Flachstücke 10, 10', 10" die gewünschte Rillung in die Wellpappe 3, und zwar ähnlich, wie dieses mit einem feststehenden Schwert erfolgen würde. Der Unterschied zu der heute bekannten normalen Rillung, die durch einen runden Rillkörper erzeugt wird, besteht nun darin, daß die hier beschriebene Erfindung eine horizontale Prägung durchführt und damit bei den fertigen Wellpappenbögen eine einwandfreie Faltung ermöglicht.The flat flat pieces 10 present over the outer diameter of the upper (or lower) transport body 1, 10 ', 10 "the desired creasing in the corrugated cardboard 3, similar to how this would be done with a fixed sword. The difference to the normal creasing known today, which is produced by a round creasing body, is now that the here described invention carries out a horizontal embossing and thus allows a perfect folding in the finished corrugated cardboard sheets.
Der kombinierte Rill- und Transportkörper 1 weist demnach einen vieleckigen Rillring 11 auf, der über den Umfang 4 seines kreisrunden Transportkörpers 1 etwa l-4mm vorsteht und eine Breite von 0.5 bis 4mm hat, wobei die Kanten abgerundet sind. Die Au- ßenkontour über den größten Umfang 4 des kombinierten Rill- und Transportkörpers 1 ist damit die eines regelmäßigen Vielecks mit beispeislweise 70 Ecken, was aus der Figur 1 nicht hervorgeht, da diese den Rillring nur schematisch darstellt.The combined creasing and transport body 1 accordingly has a polygonal creasing ring 11 which protrudes about 1 to 4 mm over the circumference 4 of its circular transport body 1 and has a width of 0.5 to 4 mm, the edges being rounded. The outer contour over the largest circumference 4 of the combined creasing and transporting body 1 is thus that of a regular polygon with, for example, 70 corners, which cannot be seen from FIG. 1, since this only shows the creasing ring schematically.
Figur 2 zeigt eine Ausschnittsvergrößerung A aus Figur 1, in der man den geraden Verlauf der Flachstücke 10, 10', 10" besser erkennt. Der Umfang 4 des Transportkörpers 1 erstreckt sich also als Kreisbogen, während die Außenkontur der Flachstücke 10, 10', 10" zwischen den Punkten B und C ebenso wie rechts und links davon gerade verläuft. FIG. 2 shows an enlarged detail A from FIG. 1, in which the straight course of the flat pieces 10, 10 ', 10 "can be better recognized. The circumference 4 of the transport body 1 thus extends as an arc, while the outer contour of the flat pieces 10, 10', 10 "between points B and C as well as straight to the right and left of it.

Claims

Patentansprüche claims
1. Vorrichtung zur Ausprägung von Rillinien in Wellpappe (3) zur besseren Faltung und Einhaltung der Schachtelabmessungen für Herstellungs- und Verarbeitungsmaschinen mit einem kombinierten Rill- und Transportkörper (1) und einem Gegenkörper (2), dadurch gekennzeichnet, daß der kombinierte Rill- und Transportkörper (1) an seinem Umfang (4) mit einer je nach Außendurchmesser variierenden Anzahl von Flachstücken (10, 10', 10") versehen ist, die in der Drehebene des kombinierten Rill- und Transportkörpers (1) verlaufen und einen über den Umfang ( 4 ) des kombinierten Rill- und Transportkörpers ( 1 ) radial vorstehenden vieleckigen Rillring (11) bilden.1. Device for stamping creasing lines in corrugated cardboard (3) for better folding and compliance with the box dimensions for manufacturing and processing machines with a combined creasing and transport body (1) and a counter body (2), characterized in that the combined creasing and Transport body (1) is provided on its circumference (4) with a number of flat pieces (10, 10 ', 10 ") which vary depending on the outside diameter and which run in the plane of rotation of the combined creasing and transport body (1) and one over the circumference (4) form the combined creasing and transport body (1) radially protruding polygonal creasing ring (11).
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Transportkörper (1) in bezug auf den Gegenkörper (2) in der Höhe verstellbar am Maschinenrahmen angebracht ist.2. Device according to claim 1, characterized in that the transport body (1) with respect to the counter body (2) is height-adjustable on the machine frame.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der vieleckige Rillring (11) eine Dicke von 1 - 5 mm hat.3. Device according to claim 1, characterized in that the polygonal creasing ring (11) has a thickness of 1-5 mm.
4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß jedes Flachstück (10, 10', 10") des vieleckigen Rillringes (11) eine Länge von 5 - 20 mm hat. 4. The device according to claim 1, characterized in that each flat piece (10, 10 ', 10 ") of the polygonal creasing ring (11) has a length of 5 - 20 mm.
EP99953815A 1998-10-15 1999-10-13 Device for producing score lines on corrugated board Expired - Lifetime EP1121243B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19849282 1998-10-15
DE19849282A DE19849282C1 (en) 1998-10-15 1998-10-15 Device for stamping creases in corrugated cardboard
PCT/EP1999/007712 WO2000021741A1 (en) 1998-10-15 1999-10-13 Device for stamping groove lines on corrugated board

Publications (2)

Publication Number Publication Date
EP1121243A1 true EP1121243A1 (en) 2001-08-08
EP1121243B1 EP1121243B1 (en) 2002-07-17

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EP99953815A Expired - Lifetime EP1121243B1 (en) 1998-10-15 1999-10-13 Device for producing score lines on corrugated board

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US (1) US6537189B1 (en)
EP (1) EP1121243B1 (en)
AT (1) ATE220616T1 (en)
CA (1) CA2336912C (en)
DE (2) DE19849282C1 (en)
WO (1) WO2000021741A1 (en)

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CA2336912C (en) 2003-07-29
WO2000021741A1 (en) 2000-04-20
DE59902071D1 (en) 2002-08-22
CA2336912A1 (en) 2000-04-20
DE19849282C1 (en) 2000-05-25
ATE220616T1 (en) 2002-08-15
EP1121243B1 (en) 2002-07-17
US6537189B1 (en) 2003-03-25

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