EP0825951B1 - Verfahren und vorrichtung zum komprimieren und verpackung von komprimierbaren produkten - Google Patents

Verfahren und vorrichtung zum komprimieren und verpackung von komprimierbaren produkten Download PDF

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Publication number
EP0825951B1
EP0825951B1 EP96919880A EP96919880A EP0825951B1 EP 0825951 B1 EP0825951 B1 EP 0825951B1 EP 96919880 A EP96919880 A EP 96919880A EP 96919880 A EP96919880 A EP 96919880A EP 0825951 B1 EP0825951 B1 EP 0825951B1
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EP
European Patent Office
Prior art keywords
packaging
compression
mass
plates
another
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Expired - Lifetime
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EP96919880A
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English (en)
French (fr)
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EP0825951A1 (de
Inventor
Bernard Louis
Bernard Bichot
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Saint Gobain Isover SA France
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Saint Gobain Isover SA France
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
    • B65B63/02—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for compressing or compacting articles or materials prior to wrapping or insertion in containers or receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
    • B65B63/02—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for compressing or compacting articles or materials prior to wrapping or insertion in containers or receptacles
    • B65B63/022—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for compressing or compacting articles or materials prior to wrapping or insertion in containers or receptacles using compressing chambers or plates moving in an endless path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/24—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for shaping or reshaping completed packages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/026—Enclosing successive articles, or quantities of material between opposed webs the webs forming a curtain

Definitions

  • the invention relates to techniques for compressing and packaging materials compressible such as in particular sets of mineral fiber panels.
  • US Patent US 4,501,107 describes a machine for stacking mineral wool mattress and then compress them to introduce them in a compressed state into a kind of bag which constitutes the packaging of the product. They stay there during transport and storage until they arrive at the site where by cutting the envelope, we release the mattresses that return to their original thickness.
  • US Pat. No. 4,501,107 provides automatic means for stacking the mattress, to compress the pile, then to introduce the compressed pile into a bag where it stays in a compressed state.
  • the compression means is a plate placed on top of the stack and animated by a piston of a vertical downward movement, while the plate on which the battery rests, it remains immobile.
  • the method described in this document is effective but it has the disadvantage of any discontinuous method, that of the dead times which separate the end of an operation bagging at the start of the next operation. Furthermore, the introduction of the battery compressed in the bag can not be done without using accessories (essentially two plates, below and above the stack) to maintain pressure during the introduction, accessories which occupy a significant place in the packaging and which therefore allow significant decompression during their evacuation. Moreover, the introduction being made in the bags by back pushing, there is friction of the edges of the stack compressed against fixed sheets and may damage the panels.
  • US Patent 2,960,023 relates to the compression and packaging of sheets of crepe paper.
  • the compression member consists of two caterpillars made of hinged plates which come together making between they angle and finish compression by being parallel to each other the other.
  • US Patent US 3,717,973 describes a machine to continuously compress volumes of compressible products, particular rolls of mineral wool, to introduce them in the form parallelepiped, in a sheath of higher dimension where they remain in the compressed state (but less than at the time of their introduction).
  • the device described comprises at the bottom a conveyor belt substantially horizontal and in the upper part, a conveyor synchronous which is in two successive plane parts, the first converging with respect to the lower mat and the second which is there substantially parallel.
  • two new horizontal conveyors convey the product they have kept compressed in the sheath-shaped packaging.
  • Patent application FR 2 546 478 relates to methods of compression and packaging of rolls of toilet paper.
  • two wrapping films, one above the other below of the product to be packaged are sealed to each other, especially in the space separating two products.
  • Document DE-A-26 01 590 describes a method for packaging elongated packages made up in particular of rolls of fabric. The process is continuous; while bundles placed lengthwise on a carrier are driven by him, we place a film above the width of which is such that it alone can surround the package.
  • the carrier is in two parts, each supporting one side of the package. Between the two parts, below, is installed a device for solder which allows to form a sheath around the package.
  • Document DE-A-26 01 590 also provides that between two successive bundles, a suitable device can weld the sheets packaging and cut them to make the packages independent.
  • the invention sets itself the task of providing a method which makes it possible to effectively compressing product volumes continuously compressible, in particular stacks of mineral wool mattresses.
  • the invention proposes a method of conditioning of a volume of compressible material in which the volume is placed between two pressing surfaces and transported laterally with respect to the pressing direction while the surfaces approach each other and in which the surfaces are planes parallel.
  • the technique must also allow rapid action which does not damage the elastic properties of the material.
  • the invention proposes that the pressing surfaces be those of plates carried by carriages associated two by two and that each of the carriages is associated with a carriage which precedes it and another which follows it, to constitute two trains animated by a speed constant.
  • the pressing surfaces are brought together symmetrically by relative to the volume of compressible material.
  • the method of the invention provides that the sheath consists of two strips of packaging film placed above and below the volume of material, that they are dragged with it, that their width allows them to overlap on the sides of the compressed volume and that they are linked to each other on said sides of the volume.
  • the packaging film is a plastic film, the strips are linked by welding without changing plan and, after assembly, the welding is requested in shear.
  • the invention provides a device comprising two converging conveyors located one above the other and driven at a speed constant, they include carriages supporting flat plates, parallel to the same plan, which they entrain, the plates of a carrier and the other being superimposed.
  • the corresponding flat plates on one conveyor and on the other are symmetrical with respect to a plane which is parallel to them.
  • the device of the invention comprises associated with each conveyor a distributor of a strip of plastic film arranged so as to put a strip in contact with the plate of the first lower carriage and another in contact with that of the first upper carriage; in addition, the plastic film strips have a width allowing them to overlap the sides of the volumes of compressed material.
  • the converging carriers have, downstream, an area where the difference between corresponding plates is substantially invariable.
  • the device includes, in particular in this zone, conforming elements intended to place the edges of the film strips plastic superimposed, flat on the sides of the volumes of compressed material as well as downstream of the shaping elements, means for carrying out the welding of the edges of the strips plastic film such as hot air nozzles.
  • the device makes it possible to block the compressible object at its lowest volume. that it can practically keep during its transport and its storage. He will not find a possibility of extension only when the sheath is cut in plastic film, on site. And at this time, thanks to the original compression technique of the invention, it will find its starting volume and, above all, all its elasticity.
  • FIG. 1 represents a line for packaging volumes of a compressible material, in this case a stack 1 of panels 2 of mineral fibers 8 in number here. It is a matter of compressing this stack and conditioning it (packing) without it regaining volume.
  • the stack On arrival at the entrance to the machine, the stack is placed on a horizontal tray made of a plate 3.
  • the plate is rectangular like the panels and the stack is centered on the plate. She will stay on this plate 3 until she leaves the line conditioning.
  • Plate 3 is supported, like the other nine lower plates and like the 10 upper plates represented by a carriage 4. Indeed, above the stack 1 is finds another plate 5 identical and parallel to plate 3 and supported like it by a carriage 6.
  • the two carriages 4, 6 advance synchronously, approaching one the other. They are each driven by a chain 7, 8 (or two chains, one of each side of the carriage).
  • the five lower carriages and the five upper carriages that participate when pressing volume 1 constitute a train which advances regularly, driven by chains 7, 8.
  • the carriages are extracted from the trajectory that they followed during the compression and go back the other way, pushed by the chains and guided by a second guide part 13 below the guides 11 and 14 above of guide 12.
  • Figure 2 shows the upstream switch and Figure 3 the downstream switch (in these cases, it is the lower carriage, the devices for the upper carriages are equivalent).
  • the roller 15 must leave the lower guide part 13 to join the upper guide part 11 before starting the compression operation.
  • the axis 16 linked to the carriage is driven by the link of the chain 7 which it crosses.
  • a movable guide element 17 is capable of sliding laterally in the extension of the upper guide part 11.
  • the moving guide 17 can be moved by a jack controlled by a central computer responsible for controlling the entire packaging line. he is however preferable to have a ⁇ positive ⁇ drive of the movable guide element 17 by the tooth wheel 19 which drives and / or supports the chain 7. This mechanical connection is carried out by a rod-crank system not shown.
  • the system is different because the movable guide element 20 moves by driving with it the roller 21 which thus passes almost instantaneously from the upper guide part 11 to the lower guide part (back) 13.
  • the transfer takes place while the toothed wheel 22 support (and possibly drive) of the chain 7 makes a U-turn.
  • the connecting rod 23, in the retracted position in Figure 3a acts during the rotation of the toothed wheel 22 on the element 20 which rotates around its axis 24 and comes to put ( Figure 3b) the movable guide element 20 vis-à-vis screw of the lower guide portion 13 when the connecting rod 23 is extended.
  • FIGS. 2 and 3 make it possible to gain place but it would also be possible to have a continuous rail which is followed by the rollers 9, 10, 15, 21.
  • devices are however to be provided to avoid, in part left at the bottom or part right at the top, that the carriage, driven by its weight at the end of race, don't leave in the direction it comes from.
  • It can be for example a chain which drives the rollers 15, 21 similar to chains 7, 8.
  • Figure 4 shows a variant of the tray drive system which has the function of transporting and pressing the volumes of compressible materials.
  • This traditional system the mechanism of which is similar to that of escalators, has the disadvantage of requiring much more space for the return circuit.
  • the plates must move apart to release the compressed products, they cannot remain parallel or horizontal, which does not facilitate handling of the finished products.
  • Mixed solutions are also possible, one side of the stacks of panels being supported (or surmounted) by a plate associated with a carriage while the other is supported on a single synchronous conveyor belt so as to avoid slipping. But in this case, the packaging process could not be that described below, it must be adapted.
  • the method of the invention also includes an original packaging technique. It is applied here to a volume of compressed material but is also applicable to products whose density does not decrease during their packaging.
  • the packaging technique described below or an equivalent technique is an essential complement to the compression method because it alone allows practically to keep the volume compressed while limiting volume recovery as much as possible.
  • FIG. 1 and in FIG. 4 is shown a system for supplying packaging film 25.
  • the film comes from two rollers, not shown. It has a precise width which during the tests was for each of the films 25 equal to half the perimeter of the compressed volume increased by a few centimeters to allow recovery of the films constituting each, half of the sheath which packages and traps the compressed product. .
  • the films 25 are guided by rollers 26 so as to come into contact respectively with the plates 3, 5 of the first carriages 4, 6.
  • the packaging film projects laterally over the products to be compressed (and, even possibly from the tray 3 itself).
  • the edges of the strip fold down on each side of the stack 1.
  • the film 25 is preferably driven only by the movement of the carriages, which ensures that the film stretches longitudinally under and on the stack 1 of mattress 2 of mineral fibers.
  • the last carriages are in the compression zone, the first two in the packaging zone, where the length of film between plates no longer varies, and the fifth, in the middle, at the transition between the two zones.
  • Figure 5 From the start of the packaging area, Figure 5 , we placed in the middle area, on each side, conformers whose role is to set up the edges of the film strips 25.
  • the edge of the lower film 35 is taken by the shaper 31 and run along the support plate 30 (located at a defined distance from the plate support 27) where it is pressed by the roller 32.
  • the two edges, upper and lower come into contact and one can realize their solidarity.
  • several means 33 are possible, providing a exterior glue (hot melt in particular), deposit of a double-sided adhesive that has been introduced at the upstream end of the support plate 30 of the lower film, or else autogenous welding of suitable plastic films. It is this technique which constitutes the preferred embodiment. of the invention.
  • the film is a HD (high density) polyethylene film with a thickness of 50 to 100 ⁇ m (tests made with a low density BD film also gave excellent results), the means to achieve the fusion of the material is the heat provided by nozzles which blow air at a temperature between 400 and 650 ° C; the tests were carried out with air heaters from the LEISTER Company.
  • the skilled person adapts air temperature and blowing speed to the speed of movement of the film in front the nozzles.
  • safety devices cut off the hot air supply (or deflect it) in the event line stop.
  • the packaging technique which has just been described in detail uses a autogenous welding of a plastic film; we would not go beyond the scope of the invention in using a wrapping film of another kind or a technique of joining the edges of the different movie.
  • the means of assembling the edges of the two upper bands and that intersect and overlap over a large area could be replaced by an edge-to-edge junction, where the internal face of a film would be in contact with the inner side of the other.
  • This technique is not preferred because it solicits welding or the bonded junction in peel, and this type of assembly is less solid than that which was retained where the joint is stressed in shear.
  • the packets of packaged materials 36 are driven by a carrier 37. They are associated in a chain in the packaging sheath. Between two bundles, the sheath is presented as an empty hose 38.
  • we have planned to install at this level a known device which allows to weld and / or cut films automatically to give packets of wrapped materials their autonomy and possibly protect them if the packaging is closed.
  • the packaging film was 60 ⁇ m thick polyethylene HD, the speed line advancement was 20 m / min.
  • the volume of the packets was measured. He was from 112.5 liters, which corresponds to a compression ratio of around 6.5.
  • the stack of products found a height of 950 mm, which corresponds to a loss of thickness per panel, acceptable.
  • the released panels were found their nominal thickness, 100 mm.
  • the compression and conditioning method of the previous tests allows thus having a packaged product whose compression ratio is the maximum it it is possible to keep with a deformable sheath as packaging.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Basic Packing Technique (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Packaging Of Special Articles (AREA)

Claims (17)

  1. Verfahren zur Konfektionierung von mindestens einem Volumen komprimierbaren Materials, bei dem jedes Volumen zwischen zwei gegenüberstehenden Pressflächen angeordnet ist und mit ihnen seitlich zur Pressrichtung transportiert wird, während die Pressflächen sich einander annähern, wobei die beiden Pressflächen sich mit der gleichen Geschwindigkeit in Transportrichtung fortbewegen, dadurch gekennzeichnet, dass die Oberflächen paarweise parallel sind, sobald die Pressung einsetzt und es während ihrer Annäherung ständig bleiben, und dass die Pressrichtung während des Transports parallel zu sich selbst bleibt.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Flächen zur Pressung diejenigen von Platten sind, die auf paarweise verbundenen Untergestellen aufliegen.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass jedes der Untergestelle mit einem Untergestell verbunden ist, das sich vor ihm befindet und mit einem anderen, das ihm folgt, um zwei Reihen zu bilden, die von einer synchronen Bewegung, insbesondere mit konstanter Geschwindigkeit angetrieben werden.
  4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Pressflächen sich symmetrisch zu dem Volumen komprimierbaren Materials annähern.
  5. Verfahren zur Aufbereitung von Volumina komprimierbaren Materials, dadurch gekennzeichnet, dass es eine Phase der Pressung gemäss einem der vorangegangenen Ansprüche beinhaltet, nach der bei Abschluss der Pressung das Volumen komprimierten Materials von einer Hülle umgeben wird, die seine Ausdehnung begrenzt.
  6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass die Hülle aus Verpackungsfolien hergestellt wird, die gleichzeitig mit dem zu verpackenden Produkt transportiert und in zwei Streifen über und unter dem Materialvolumen zwischen dem Volumen und den Förderflächen angeordnet werden, dass die Breite der Streifen ihnen erlaubt, sich an den Seiten des Volumens in Transportrichtung zu überdecken und dass sie miteinander kontinuierlich an besagten Seiten des Volumens verbunden sind.
  7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass die Verpackungsfolie eine Kunststofffolie ist, dass die Streifen miteinander durch Verschweißen verbunden sind, ohne ihre Ebene zu ändern, und dass nach der Verbindung die Schweißnaht durch die Scherkraft beansprucht wird.
  8. Verfahren gemäss einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Volumen komprimierbaren Materials aus aufeinandergelegten Platten aus Mineralwolle, insbesondere Glaswolle besteht.
  9. Vorrichtung zur Komprimierung und Konfektionierung eines Volumens (1) komprimierbaren Materials mit zwei konvergierenden, übereinanderliegenden Transporteinheiten, die eine Zone zur Komprimierung und eine Zone zur Verpackung umfassen, die von einer synchronen Bewegung, insbesondere mit konstanter Geschwindigkeit angetrieben werden und von denen jede mindestens eine ebene Platte (3;5) aufweist, wobei diese Platten in den Zonen zur Komprimierung und zur Verpackung einander gegenüberstehend angeordnet sind, dadurch gekennzeichnet, dass es Untergestelle (4;6) aufweist, auf denen die besagten ebenen Platten aufliegen, die sie transportieren, und Mittel (11, 12, 13, 14), um die besagten ebenen Platten einander in der Zone zur Komprimierung anzunähern und um die besagten Platten parallel zu einer gleichen Ebene in der gesamten Zone zur Komprimierung und vorzugsweise bis zum Ende der Zone zur Verpackung zu halten.
  10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die entsprechenden ebenen Platten auf der einen Transporteinheit (3) und auf der anderen (5) alle symmetrisch zu einer gleichen Ebene sind, die zu ihnen parallel ist.
  11. Vorrichtung nach Anspruch 9 oder Anspruch 10, dadurch gekennzeichnet, dass sie verbunden mit jeder Transporteinheit einen Spender (26) für einen Streifen Plastikfolie (25) aufweist, der so angeordnet ist, dass ein Streifen (35) mit der Platte (3) des ersten unteren Untergestells (4) in Kontakt gebracht wird und ein anderer mit derjenigen (5) des ersten oberen Untergestells (6) und dadurch, dass die Streifen aus Kunststofffolie (25) eine Breite haben, die es ihnen ermöglicht, sich an den Seiten der Volumina (1) komprimierten Materials übereinanderzulegen.
  12. Vorrichtung nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, dass die konvergierenden Transporteinheiten nach der Zone zur Komprimierung eine Zone aufweisen, in der der Abstand zwischen entsprechenden Platten im wesentlichen gleichbleibend ist.
  13. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass sie insbesondere in der Zone, in der der Abstand zwischen Platten im wesentlichen gleichbleibend ist, formanpassende Elemente (28, 31) aufweist, die dazu bestimmt sind, die Ränder der Streifen (34, 25) von übereinandergelegter Kunststofffolie eben auf den Seiten der Volumina komprimierten Materials anzuordnen.
  14. Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, dass nach den formanpassenden Elementen (28, 31) Mittel zur Durchführung der Verschweißung der Ränder der Streifen (34, 35) der Kunststofffolie angeordnet wurden, wie z.B. Heißluftbrenner (33).
  15. Vorrichtung nach Anspruch 14, dadurch gekennzeichnet, dass am Ende der Transporteinheiten Mittel angeordnet sind, um die Kunststofffolien (25) zwischen aufeinanderfolgenden Volumina (1) komprimierten Materials zu verschweißen und/oder abzuschneiden.
  16. Vorrichtung nach einem der Ansprüche 9 bis 15, dadurch gekennzeichnet, dass die Untergestelle (4, 6) jeder Transporteinheit an einem Ende mit einer Kette (7, 8) verbunden sind, die sie entlang der Zone zur Komprimierung und zur Verpakkung zieht und sie auf ihrem Rückweg vorwärtsdrückt und dadurch, dass sie am anderen Ende ein Führungsmittel aufweisen, wie z.B. eine Rolle (9, 10), die auf einer Führung (11, 12, 13, 14) umläuft, wie z.B. eine Schiene, und dadurch, dass die Führung zwei Teile aufweist, eines (11, 12) für denVorlauf, das andere (13, 14) für den Rücklauf.
  17. Vorrichtung nach Anspruch 16, dadurch gekennzeichnet, dass an den Enden der Transporteinheiten bewegliche Führungselemente (17, 20) vorgesehen sind, um den Übergang der Untergestelle von einer Seite (11, 12) der Führung auf die andere (13, 14) zu ermöglichen.
EP96919880A 1995-05-15 1996-05-09 Verfahren und vorrichtung zum komprimieren und verpackung von komprimierbaren produkten Expired - Lifetime EP0825951B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9505712 1995-05-15
FR9505712 1995-05-15
PCT/FR1996/000693 WO1996036536A1 (fr) 1995-05-15 1996-05-09 Procede et dispositif de compression et d'emballage de produits compressibles

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Publication Number Publication Date
EP0825951A1 EP0825951A1 (de) 1998-03-04
EP0825951B1 true EP0825951B1 (de) 1999-07-14

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US (1) US5979145A (de)
EP (1) EP0825951B1 (de)
JP (1) JPH11505200A (de)
KR (1) KR19990014885A (de)
CN (1) CN1184453A (de)
AR (1) AR001937A1 (de)
AT (1) ATE182112T1 (de)
AU (1) AU705317B2 (de)
BR (1) BR9609103A (de)
CA (1) CA2219636A1 (de)
DE (1) DE69603273T2 (de)
DK (1) DK0825951T3 (de)
ES (1) ES2134624T3 (de)
HR (1) HRP960219A2 (de)
HU (1) HUP9802923A2 (de)
NO (1) NO975196L (de)
NZ (1) NZ308580A (de)
PL (1) PL323050A1 (de)
TR (1) TR199600378A1 (de)
WO (1) WO1996036536A1 (de)
ZA (1) ZA963563B (de)

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EP0825951A1 (de) 1998-03-04
NO975196D0 (no) 1997-11-12
AR001937A1 (es) 1997-12-10
CN1184453A (zh) 1998-06-10
BR9609103A (pt) 1999-02-02
PL323050A1 (en) 1998-03-02
NZ308580A (en) 1999-06-29
JPH11505200A (ja) 1999-05-18
HRP960219A2 (en) 1997-08-31
KR19990014885A (ko) 1999-02-25
US5979145A (en) 1999-11-09
DE69603273D1 (de) 1999-08-19
NO975196L (no) 1997-11-12
AU705317B2 (en) 1999-05-20
ATE182112T1 (de) 1999-07-15
HUP9802923A2 (hu) 1999-03-29
DK0825951T3 (da) 2000-02-07
AU5825496A (en) 1996-11-29
ES2134624T3 (es) 1999-10-01
TR199600378A1 (tr) 1997-03-21
CA2219636A1 (fr) 1996-11-21
DE69603273T2 (de) 2000-02-10
WO1996036536A1 (fr) 1996-11-21
ZA963563B (en) 1996-11-19

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