EP0330998B1 - Maschine zum Herstellen mit Tee gefüllter Doppelkammerbeutel - Google Patents

Maschine zum Herstellen mit Tee gefüllter Doppelkammerbeutel Download PDF

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Publication number
EP0330998B1
EP0330998B1 EP89103144A EP89103144A EP0330998B1 EP 0330998 B1 EP0330998 B1 EP 0330998B1 EP 89103144 A EP89103144 A EP 89103144A EP 89103144 A EP89103144 A EP 89103144A EP 0330998 B1 EP0330998 B1 EP 0330998B1
Authority
EP
European Patent Office
Prior art keywords
conveyor wheel
tubing
arms
folding
machine according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89103144A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0330998A2 (de
EP0330998A3 (en
Inventor
Adolf Rambold
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.)
Teepak Spezialmaschinen GmbH and Co KG
Original Assignee
Teepak Spezialmaschinen 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 Teepak Spezialmaschinen GmbH and Co KG filed Critical Teepak Spezialmaschinen GmbH and Co KG
Priority to AT89103144T priority Critical patent/ATE73076T1/de
Publication of EP0330998A2 publication Critical patent/EP0330998A2/de
Publication of EP0330998A3 publication Critical patent/EP0330998A3/de
Application granted granted Critical
Publication of EP0330998B1 publication Critical patent/EP0330998B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65B29/00—Packaging of materials presenting special problems
    • B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
    • 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
    • B65B29/00—Packaging of materials presenting special problems
    • B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
    • B65B29/028—Packaging of substances, e.g. tea, which are intended to be infused in the package packaging infusion material into filter bags

Definitions

  • the invention relates to a machine for producing double-chamber bags filled with tea from a material web which is continuously shaped into a tube, according to the preamble of claim 1.
  • the object of the present invention is now to develop a machine of the generic type in an advantageous manner so that higher working speeds and a reduction in susceptibility to failure during bottom fold formation and in particular during top fold formation are achieved.
  • the interaction of the stationary cover with the support surfaces of the arms ensures a secure binding and exact placement of the tube pieces immediately after transfer to the transport wheel during the entire further manufacturing process. Scattering of the tea is therefore largely impossible, even under extreme conditions.
  • the exact placement of the tube pieces also ensures a high degree of dimensional accuracy in the formation of the W-shaped bottom fold and in the subsequent placement of the tube piece parts, in which the bag bottom is drawn into the interior of the transport wheel. In this way, not only the centrifugal forces acting on the tea goods are reduced, but also the inertial forces acting on the transport wheel, which has a particularly advantageous effect on its smooth running and thus contributes to a further reduction in unwanted vibrations in this critical production area.
  • At least one arm is mounted on a sliding block, the position of which can be changed within the sliding guide via a rocker arm, which can be used with its one end is hinged to the arm and the other end to the transport wheel.
  • the contact surfaces of the arms and the underside of the cover are in engagement with one another via at least one tongue and groove-like connection directed in the direction of rotation of the transport wheel , wherein there is a small gap between the mutually engaging flanks.
  • the cutting device expediently consists of a knife shaft rotating at the speed of the hose web with at least one knife edge and a plurality of knife bars which are arranged on the transport wheel at equal angular intervals.
  • the knife shaft is arranged in the direction of travel of the tubular path in front of the upper apex of the transport wheel, its lower apex being slightly below the upper apex of the transport wheel, so that the separated piece of hose maintains an inlet plane that is as tangential as possible.
  • the knife edge of the knife shaft has at least one notch, so that the piece of hose is not yet completely separated from the hose and only the final separation then takes place when the tube piece has been taken over and fixed by the bottom folding station.
  • the hold-down device preferably consists of two spaced-apart folding swords, between which a spring-loaded folding plate is mounted, the lower end face of which has a notch cooperating with the apex of the profile part.
  • a die with a leading edge for the flaps provided for forming the top fold is connected to the cover at the level of the peripheral plane of the transport wheel the tube piece parts is arranged, which is aligned essentially parallel to the axis of rotation of the transport wheel and has a uniformly inwardly tapering recess, the dimensions of which essentially correspond to those of the bag tip and which cooperates with a correspondingly shaped tongue of a slide, which is essentially in the circumferential plane of the transport wheel is arranged so that it can be moved back and forth and presses the tab areas projecting beyond the recess area on the outer surface of the die facing away from the transport wheel, while at the same time the folding tongue press the tabs in the area of the recess on the inside of the die.
  • the die can have a folded edge on the side opposite the leading edge, which runs parallel to the leading edge and which cooperates with a fold-over device for turning over the bag tip.
  • the cover cooperates with a tongue which pulls the tip of the top fold around the leading edge of the cover and against its outer surface presses.
  • the functional zone I mainly comprises a pair of traction rollers 11, which continuously feeds a hose 13 to a cutting device 14 from a material web, not shown, and filled with portions of tea 12.
  • the cutting device 14 separates tube pieces 15 of the same size and each containing two portions of tea 12.
  • the functional zone II which directly adjoins the cutting device 14, essentially consists of the transport wheel 10, a stationary cover 20 above the transport wheel 10, a plurality of arms 21, 22 arranged in pairs for holding and securing the tube pieces 15 and a device for formation a bottom rebate, which has a plurality of profile parts 23 and a holding-down device 24 cooperating therewith.
  • the subsequent functional zone III forms a head folding station in which the head closure is produced by means of a die 50 and a slide 51.
  • Function zone IV follows last, which includes is equipped with two press flaps 60 and 61 for pressing and erecting the top fold. All units and other components of the machine located outside the functional zones mentioned are no longer the subject of the invention and are therefore not described in more detail.
  • the cutting device 14 shown in FIG. 3 on an enlarged scale with the upstream pair of drawing rollers 11 has a knife shaft 16 with at least one knife edge 17 which cooperates with a knife bar 18 which is arranged at equal angular intervals between two successive pairs of arms 21, 22 and is fixedly connected to the transport wheel 10.
  • the knife shaft 16 is driven continuously at the speed of the hose web and is arranged in the direction of travel of the hose 13 in front of the upper vertex of the transport wheel 10 at such a height that its lower vertex lies slightly below the upper vertex of the transport wheel 10.
  • the knife edge 17 of the knife shaft 16 has at least one, but preferably two notches (not shown) at a distance, the operation of which will be described below.
  • the cover 20, which extends directly to the cutting device 14, is preferably of rail-shaped design in accordance with FIG. 4 in the present embodiment. It extends over the entire functional zone II, with the undersides 25 of the rails 26 lying at the level of the circumferential plane of the transport wheel 10. The distance between the rails 26 suitably corresponds to approximately one third of the width of the hose web.
  • the free ends of the arms 21, 22 have a support surface 27 on the end face for holding and securing the separated tube pieces 15.
  • the arms 21, 22 are connected to one another in a movement-locking manner and are controlled via a joint system in such a way that the bearing surfaces 27 are in constant contact with the undersides 25 of the rails 26.
  • the joint system consists of a rocker arm 28 (FIG. 2), which is articulated at one end at 29 to the arms 21, 22 and at the other end at 30 on the transport wheel 10, and from a sliding guide 31 of a sliding block attached to the transport wheel 10 32 on which the arms 21, 22 are rotatably mounted.
  • each pair of arms 21, 22 sits the profile part 23 of the bottom folding device, which in the substantially radial direction between an initial position (FIG. 2, item B) and an end position (FIG. 2, item F) in the interior of the transport wheel 10 can be moved back and forth and has resilient side parts 34 on both sides of a wedge-shaped central part 33.
  • the holding-down device 24 which cooperates with the profile part 23 consists of two folding swords 35 which are fixedly connected to one another and between which a folding plate 37 loaded by a spring 36 (FIG. 2) is mounted.
  • the lower end face of the folding plate 37 is provided with a notch 38 which cooperates with the central part 33 of the profile part 23 in the working position of the bottom folding device.
  • the hold-down device 24 which can be controlled from the outside, executes a swiveling-in and swiveling-out movement and has slots in the lower area, into which the rails 26 of the cover 20 engage when it assumes its working position.
  • the hose piece parts 15a, 15b located on both sides of the profile part 23 are grasped by the arms 21, 22 in the end region outside the portions of tea 12 and pressed against the underside 25 of the cover 20 in such a way that two are unequal for later formation of the top fold in a manner known per se long rags 15c and 15d remain free.
  • the undersides 25 of the rails 26 are wedge-shaped in the present embodiment and engage in corresponding notches 39 which are formed in the contact surfaces 27 of the arms 21, 22 (FIG. 5).
  • the cover 20 has a step 40 (FIGS. 2, 6 and 7) such that the undersides 25 of the rails 26 are opposite the plane of movement of the Support surfaces 27 of the arms 21, 22 are set back somewhat in a relatively small angular range, in order then to run out in a straight surface 41 that is essentially tangential to the circumferential plane of the transport wheel 10.
  • a tongue 42 is preferably made of spring steel, which by means of a rocker arm 43 against the force of a spring 44 from a starting position in which the free end of the tongue 42 with the Closes the upper edge of the arm 21 or the support surface 27, can be moved longitudinally into a working position in which the free end of the tongue 42 projects beyond the support surface 27.
  • the movement of the rocker arm 43 connected to the arm 21 via a pivot axis 47 is controlled by a cam 45 on which a roller 46 attached to the rocker arm runs.
  • a lever 48 is rotatably arranged above the cover 20, the head 49 of which, in the region of the recessed undersides 25 of the rails 26, runs through a curved path between the rails 26, at the apex of which the head 49 is as close as possible to the movement path of the arms 21 , 22 reaches without touching their bearing surfaces 27.
  • the die 50 provided in the extension of the cover 20 and the slide 51 of the head folding station, as well as the outgoing undersides 25 of the rails 26, are aligned essentially tangentially to the circumferential plane of the transport wheel 10.
  • the die 50 which can essentially move up and down in the tangential plane, has a leading edge 52 directed upwards against the running direction of the transport wheel 10 for the tabs 15c, 15d of the tube piece parts 15a, 15b provided for the formation of a top fold, and has on the opposite side a fold edge 53 on which the bag tip is turned over. Both edges 52, 53 are aligned essentially parallel to the axis of rotation of the transport wheel 10.
  • the leading edge 52 is with a recess 54 with evenly sloping inward side surfaces which corresponds in shape and dimensions to the bag head after formation of the side fold.
  • the slider 51 which is set back somewhat to the outside relative to the die 50, consists of a rigid cover plate 55 and a folding tongue 56 made of spring steel arranged parallel thereto, the width of which corresponds to that of the tube piece 15 and the end of which is trapezoidal in the running direction of the transport wheel 10, such that it can pass the recess 54.
  • the slide 51 executes a movement which initially runs approximately tangentially in the running direction of the transport wheel 10 from an initial position and then essentially parallel to the movement path of the arms 21, 22 up to an end position. In the end position of the slide 51, the inside of the cover plate 55 is in contact with the outside of the die 50 and the outside of the folding tongue 56 is in contact with the inside of the die 50 (FIG. 8).
  • a folder 57 in the form of a flat iron is arranged, which has a working edge 58 aligned parallel to the folded edge 53 and which extends from a starting position on the inside of the tangential plane (FIG. 8) to an end position on the outside of the Can move tangential plane in which its inner surface in the edge region of the working edge 58 is in contact with the outer surface in the edge region of the folded edge 53 of the die 50 (Fig. 10).
  • a resilient tongue 59 rests on the outer surface in the edge region of the working edge 58 and is controlled synchronously with the tangential movement of the die 50.
  • the press flaps 60, 61 provided after the functional zone III are part of a work station in which the bag head, which is angled approximately tangentially in the running direction of the transport wheel 10, is prepared for the subsequent stitching.
  • the pressure flap 60 which is on a shaft 62 outside the Transport wheels 10 is driven counterclockwise, has a substantially tangentially oriented work surface 63 which affects the path of movement of the arms 21, 22 on its circular path.
  • the press flap 61 is pivotally articulated on the press flap 60 and is controlled via a cam, not shown, in such a way that its working surface 64 comes into contact with the working surface 63 of the press flap 60 in the region of the apex of the two circular paths.
  • FIGS. 3 to 10 The mode of operation of the individual units of the machine according to the invention shown in FIGS. 3 to 10 is described in the order of the work steps A to I in accordance with. Fig. 2 described.
  • the hose 13 continuously fed to the transport wheel maintains its largely horizontal inlet plane until the hose track has reached the position shown in position B, in which the arms 21, 22 are pivoted in and hold and secure the hose section 15 that has entered between the cover 20 and the transport wheel 10 .
  • the piece of hose fixed in this way is then cut off by means of the cutting device 14 in position A from the tubular web except for two small connecting bridges.
  • the tube piece 15 is gripped by pivoting the hold-down device 24 in the middle between the two portions of tea 12 and pressed so far into the profile part 23 that a W-shaped bottom fold is created which is held in place by the resilient side parts 34 of the profile part 23.
  • the arms 21, 22 simultaneously begin their inward closing movement, which now results in the hose piece being completely torn off the hose track.
  • the hold-down device 24 swings back into its starting position, the profile part 23 moves radially downward into the interior of the transport wheel 10 and pulls the bottom fold downward until the End position in position D is reached.
  • the trailing shorter tab 15c is caused by briefly raising the tongue 42 erected so that it can be gripped by the head 49 of the pivoting lever 48 and folded over in the running direction (item E or FIG. 7).
  • the flaps 15c, 15d are then pressed outward in the running direction with the aid of the surface 41 of the outgoing cover 20 until they continue to abut against the leading edge 52 of the die 50 of the head folding station and are received there by the recess 54 (position F ).
  • the slide 51 carries out its folding movement, in which the folding tongue 56 crosses the path of movement of the die 50 and the cover plate 55 clamps the flap regions which have not been pressed through in order to obtain a sharp folding edge during the side folding (item G).
  • the tip of the laterally folded flaps is then folded outwards after passing the fold edge 53 of the die 50 by the folding movement of the fold-over 57 and tightened with the aid of the tongue 59 (item H or Fig. 10).
  • the bag head After leaving the head folding station, the bag head, which is strongly angled with respect to the radial plane, is removed with the help of the two Press flaps 60, 61 erected again and pressed simultaneously, so that the locking clamp can be securely attached in a further operation, not shown.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Tea And Coffee (AREA)
  • Packages (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Making Paper Articles (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Basic Packing Technique (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Revetment (AREA)
  • Bag Frames (AREA)
EP89103144A 1988-02-29 1989-02-23 Maschine zum Herstellen mit Tee gefüllter Doppelkammerbeutel Expired - Lifetime EP0330998B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89103144T ATE73076T1 (de) 1988-02-29 1989-02-23 Maschine zum herstellen mit tee gefuellter doppelkammerbeutel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3806386A DE3806386C1 (el) 1988-02-29 1988-02-29
DE3806386 1988-02-29

Publications (3)

Publication Number Publication Date
EP0330998A2 EP0330998A2 (de) 1989-09-06
EP0330998A3 EP0330998A3 (en) 1990-03-21
EP0330998B1 true EP0330998B1 (de) 1992-03-04

Family

ID=6348418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103144A Expired - Lifetime EP0330998B1 (de) 1988-02-29 1989-02-23 Maschine zum Herstellen mit Tee gefüllter Doppelkammerbeutel

Country Status (25)

Country Link
US (1) US4977728A (el)
EP (1) EP0330998B1 (el)
JP (1) JPH0678087B2 (el)
KR (1) KR940007316B1 (el)
CN (1) CN1013563B (el)
AT (1) ATE73076T1 (el)
AU (1) AU600616B2 (el)
CA (1) CA1307192C (el)
CS (1) CS276745B6 (el)
DD (1) DD279002A5 (el)
DE (1) DE3806386C1 (el)
DK (1) DK164995C (el)
EG (1) EG18902A (el)
ES (1) ES2030544T3 (el)
FI (1) FI85358C (el)
GR (1) GR3004621T3 (el)
HU (1) HU203497B (el)
IL (1) IL89306A (el)
PH (1) PH26022A (el)
PL (1) PL160753B1 (el)
PT (1) PT89850B (el)
RU (1) RU1830023C (el)
TR (1) TR23548A (el)
YU (1) YU38789A (el)
ZA (1) ZA891131B (el)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69100244T2 (de) * 1990-03-21 1994-01-13 Unilever Nv Beutel und Verpackungsverfahren.
JPH0656101A (ja) * 1992-05-06 1994-03-01 Sig (Schweiz Ind Ges) 軟質袋体の充填装置
AU693806B2 (en) * 1993-10-12 1998-07-09 Unilever Plc Infusion packets and their manufacture
IT1282483B1 (it) * 1995-04-04 1998-03-23 Tecnomeccanica Srl Macchina per il confezionamento di buste-filtro contenenti un prodotto da infusione provviste di etichetta di presa collegata alla busta
DE19532816B4 (de) * 1995-09-06 2004-04-08 Teepack Spezialmaschinen Gmbh & Co. Kg Verfahren und Vorrichtung zum Transportieren von fertig zugeschnittenen und befüllten Schlauchstücken innerhalb einer Maschine zur Herstellung von mit Tee gefüllten Doppelkammerbeuteln
TR199900036T2 (xx) * 1996-07-11 1999-09-21 Unilever N.V. Demlik po�etleri ve bunlar�n �retimi.
IT1286767B1 (it) * 1996-11-15 1998-07-17 Luxteco International S A Soci Apparecchiatura per il confezionamento
IT1305534B1 (it) * 1998-09-18 2001-05-09 Ima Spa Macchina perfezionata per il confezionamento di sacchetti filtrocontenenti un prodotto da infusione provvisti di etichetta di presa
IT1320887B1 (it) * 2000-02-22 2003-12-10 Ima Spa Metodo per il confezionamento di sacchetti - filtro per prodotti dainfusione in relativi sovraincarti chiusi e relativa macchina attuante
EP1232946B1 (de) * 2001-02-09 2003-05-02 Teepack Spezialmaschinen Gmbh & Co. Kg Verfahren und Vorrichtung zum Stapeln und Verpacken von Aufgussbeuteln, insbesondere zur Bereitung von Tee
ITBO20020480A1 (it) * 2002-07-23 2004-01-23 Tecnomeccanica Srl Macchina per formare una busta filtro per contenimento di una sostanza da infusione con accumulo di filo associato alla etichetta di presa
ITBO20020477A1 (it) * 2002-07-23 2004-01-23 Tecnomeccanica Srl Apparato di preparazione ed alimentazione di materiali per confezionamento di una busta filtro per sostanze da infusione.
CN101177171B (zh) * 2007-08-22 2010-04-21 张建军 袋中袋全自动成型包装机
CN101723099B (zh) * 2008-11-01 2012-03-14 魏徽 灌装机包装袋接收夹持装置
ITBO20130489A1 (it) * 2013-09-12 2015-03-13 Tecnomeccanica Srl Metodo ed unita' per la formazione di sacchetti filtro a doppia camera per materiale da infusione.
CN107074384A (zh) * 2014-08-28 2017-08-18 建筑自动机械制造A.C.M.A.股份公司 用于生产沏泡产品包装的设备
CN104210683A (zh) * 2014-08-29 2014-12-17 成都锦汇科技有限公司 一种块状食品的新型包装方法
ITUB20159642A1 (it) * 2015-12-23 2017-06-23 Ima Spa Macchina per formare sacchetti-filtro per prodotti da infusione con stazione di piegatura.
CN106184882B (zh) * 2016-08-27 2018-09-07 桐乡市绿康菊业有限公司 一种菊花袋泡茶包装机的袋泡茶包装纸封边封口装置
IT201700074573A1 (it) * 2017-07-04 2019-01-04 Ima Spa Macchina per la formazione di sacchetti - filtro per prodotti da infusione.
ES2937247T3 (es) 2019-05-02 2023-03-27 Teepack Spezialmaschinen Gmbh & Co Kg Dispositivo y procedimiento para fabricar una bolsa provista de un envoltorio que contiene un material apto para infusión
EP3909877A1 (de) 2020-05-14 2021-11-17 Teepack Spezialmaschinen GmbH & Co. KG Vorrichtung zum transportieren von fertig zugeschnittenen und befüllten schlauchstücken
CN112757696A (zh) * 2020-12-22 2021-05-07 珠海徐太日用品有限公司 一种新型自立压缩袋生产工艺方法
CN117048889B (zh) * 2023-10-11 2024-01-02 湖南大道新材料有限公司 一种双子袋灌装设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1001944B (de) * 1951-03-15 1957-01-31 Teepack Spezialmaschinen G M B Verfahren und Maschine zum Herstellen, Fuellen und Verschliessen von Packungen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199681B (de) * 1961-04-12 1965-08-26 Hesser Ag Maschf Maschine zum Herstellen, Fuellen und Schliessen von Beuteln, insbesondere von Aufgussbeuteln
DE2120270C3 (de) * 1971-04-26 1979-03-22 Paul Gerhard Dr.-Ing. 8992 Wasserburg Klar Vorrichtung zum Herstellen von gefalteten Zweikammer-Beuteln aus einer schmiegsamen, aufgußfähigen Werkstoffbahn
DE2405761C2 (de) * 1974-02-07 1976-01-08 Paul Gerhard Dipl.-Ing. Dr. 8992 Wasserburg Klar Maschine zur Herstellung von beutelartigen Zweikammerpackungen, insbesondere von Teebeuteln
GB8408163D0 (en) * 1984-03-29 1984-05-10 Cadbury Typhoo Ltd Production of tea bags &c

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1001944B (de) * 1951-03-15 1957-01-31 Teepack Spezialmaschinen G M B Verfahren und Maschine zum Herstellen, Fuellen und Verschliessen von Packungen

Also Published As

Publication number Publication date
CN1037117A (zh) 1989-11-15
DK164995C (da) 1993-02-08
CN1013563B (zh) 1991-08-21
PH26022A (en) 1992-01-29
HUT50711A (en) 1990-03-28
US4977728A (en) 1990-12-18
HU203497B (en) 1991-08-28
GR3004621T3 (el) 1993-04-28
IL89306A0 (en) 1989-09-10
KR890012862A (ko) 1989-09-19
IL89306A (en) 1991-11-21
JPH01254513A (ja) 1989-10-11
KR940007316B1 (ko) 1994-08-13
PT89850B (pt) 1994-02-28
RU1830023C (ru) 1993-07-23
EG18902A (en) 1994-04-30
FI85358C (fi) 1992-04-10
YU38789A (en) 1991-02-28
ATE73076T1 (de) 1992-03-15
DK164995B (da) 1992-09-28
CA1307192C (en) 1992-09-08
DD279002A5 (de) 1990-05-23
DE3806386C1 (el) 1989-03-09
EP0330998A2 (de) 1989-09-06
PL277967A1 (en) 1989-10-16
DK95989A (da) 1989-08-30
EP0330998A3 (en) 1990-03-21
DK95989D0 (da) 1989-02-28
FI890913A (fi) 1989-08-30
PT89850A (pt) 1989-10-04
ZA891131B (en) 1989-10-25
FI890913A0 (fi) 1989-02-27
FI85358B (fi) 1991-12-31
TR23548A (tr) 1990-03-22
PL160753B1 (pl) 1993-04-30
JPH0678087B2 (ja) 1994-10-05
AU600616B2 (en) 1990-08-16
CS8901226A2 (en) 1991-09-15
ES2030544T3 (es) 1992-11-01
AU3020389A (en) 1989-10-05
CS276745B6 (en) 1992-08-12

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