EP0131475B1 - Verfahren und Vorrichtung zum Umhüllen eines Faserballens mit einer Schutzhülle - Google Patents

Verfahren und Vorrichtung zum Umhüllen eines Faserballens mit einer Schutzhülle Download PDF

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Publication number
EP0131475B1
EP0131475B1 EP84400810A EP84400810A EP0131475B1 EP 0131475 B1 EP0131475 B1 EP 0131475B1 EP 84400810 A EP84400810 A EP 84400810A EP 84400810 A EP84400810 A EP 84400810A EP 0131475 B1 EP0131475 B1 EP 0131475B1
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EP
European Patent Office
Prior art keywords
bale
protective wrapping
protective
wrapping
conveyor belt
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
Application number
EP84400810A
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English (en)
French (fr)
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EP0131475A1 (de
Inventor
Werner Skripalle
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.)
Saint Gobain Isover SA France
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Saint Gobain Isover SA France
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 Saint Gobain Isover SA France filed Critical Saint Gobain Isover SA France
Priority to AT84400810T priority Critical patent/ATE24160T1/de
Publication of EP0131475A1 publication Critical patent/EP0131475A1/de
Application granted granted Critical
Publication of EP0131475B1 publication Critical patent/EP0131475B1/de
Expired legal-status Critical Current

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    • 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
    • B65B63/04—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for folding or winding articles, e.g. gloves or stockings

Definitions

  • the invention relates to a method for wrapping a rotating bale, consisting of a continuous strip of coated mineral fibers, in the form of a felt roll, the coating having a closed outer surface, in a protective envelope deposited during of the winding of the bale, with a view to its packaging, according to the preamble of claim 1, as well as a device specially suitable for carrying out said method, according to the preamble of claim 7.
  • mineral fibers provided with a binder are deposited on a production line, they are compacted to the desired extent and they are hardened in a tunnel oven, after which, on the felt thus produced, a covering strip, for example aluminum, is applied and glued.
  • the coated felt mat thus obtained is cut lengthwise and the cut sections are rolled up into bales and wrapped in a protective envelope made of paper or a sheet of plastic, the whole being thus held together to stoackge and transport.
  • a coated felt roll is produced and sold by the plaintiff under the registered trademark "ROLLISOL”; it is mainly used to insulate the interior of the covers, between the rafters.
  • sections of the protective envelope, cut to the required length are placed on a conveyor, and, in connection with the advance movement of the felt roll, sends them to the winding station, so that the front end of the protective casing, when entering the winding station, is wedged in the angle formed between the outer face of the already wound felt and the inner face of the rear end of the felt, and is thus driven.
  • the ball thus formed continues to rotate and then wraps, from its front end the protective envelope around the outer face of the ball, until its rear end covers a previously wound middle region, from the 'protective envelope.
  • the rear end has been previously coated with a fast-setting, long-acting glue and is pressed during the winding movement, so that the bale roller is closed and fixed in this position by the envelope. Then, the bale is expelled from the winding station and, in the case where a shrink sheet protruding on both sides is used as a protective envelope, after passing through a heating zone (for the purpose of shrinking the edges to protect edges), it is stored and removed.
  • the object of the invention is to find a method, of the type indicated in the preamble of claim 1, with which the consumption of material for the protective envelope can be considerably reduced without having to forgo continuous packaging. all over the periphery, and without the aforementioned preparation disadvantages.
  • the front end of the protective envelope is not penetrated into the winding, passing over the rear end of the carpet of mineral fibers to drive the protective envelope without the intervention of glue, but the protective envelope adheres to the bare outer surface of the felt formed by the closed surface covering strip.
  • a bond is thus obtained only by adhesion, which can be undone by the user during the unpacking of the wound felts without deterioration of the covering strip, but there must not be an overlap between the protective casing and the last felt tower, with the ensuing drawbacks.
  • This adhesion of the front end of the protective envelope will be done expediently by controlling the instant of admission of the envelope into the zone which is roughly opposite the rear end of the fiber mat and which is as little as possible influenced by it.
  • the rear end of the The protective covering is at the same distance from the rear end of the fiber mat as from the front end. This is why the bonding of the rear end of the protective envelope, with corresponding spacing from the rear end of the type of fibers, is therefore also carried out without complications, as well as without the additional need for material for the 'protective envelope.
  • the rear end of the fiber mat is located in a middle region of the protective envelope and is fully stretched by it, without affecting the area of adhesion to the front end of the envelope of protection and the bonding zone at the front end of the protective envelope and the bonding zone at the rear end of this same envelope.
  • the protective envelope is therefore arranged without any covering with the fiber mat, in the manner of a banner around the outer contour of the bale, the length of the protective envelope exceeding the nominal circumference of the bale, only by the width of the bonding area at the periphery, for example 20 cm. For a bale with an average diameter of 55 cm, it therefore results, instead of a length of the protective envelope largely exceeding 3 m, a length of only about 1.9 m, i.e. a saving of material around 40% on a protective envelope.
  • the front end of the protective envelope is lined with a strip of glue and inserted between the rotating bale of cardboard and the lower support roller, so that a bond is obtained between the front end of the protective sheet and the outer surface of the carton essentially at the side of the bale opposite that of the rear end of the tarred cardboard. Due to the rapid establishment of the bonding bond between the front end of the protective sheet and the bale, an additional quantity of the protective sheet is stretched after the rotation of the bale and is wound tightly tensioned around the bale, until the rear end of the protective sheet covers the front end and is then also fixed with a glue.
  • the packaging using a protective sheet serves not only to form an external protection, but also to maintain the rolled shape of the bale.
  • the protective sheet is brought into the final phase of winding the ball in rotation so that under the conditions of production techniques, this results in a guaranteed drive of the front end of the protective sheet, because there is no risk of sticking the protective sheet because of the tendency of the felt coating to be damaged.
  • Claims 2 to 6 relate to advantageous improvements to the process according to the invention and relate in particular to advantageous possibilities which entail the bonding by adhesion of the anterior end of the protective sheet to the naked external contour, with closed surface, of the wound ball, so that when the user of the wound material removes the protective cover, he cannot produce any deterioration of the coating of the felt roll.
  • water at low surface tension is particularly suitable as a bonding agent between the protective covering and the closed outer surface of the felt roll. It is also possible to use a liquid hydrocarbon. In the case of water, it gradually vaporizes, and an oil, or the like, makes it possible during unpacking by the user to remove the production sheet effortlessly.
  • the single figure shows the simplified diagram of a side view of a device according to the invention.
  • 1 denotes a continuous belt for the transport of the mineral fiber mat 2 of which the FIG. 3 represents the terminal zone constituted by a separate conveyor belt.
  • a winding station 4 disposed at the end of the terminal zone 3, a winding, or a bale 5, of the fiber mat 2 has already been formed, as is well known. .
  • the front edge of the fiber mat 2 reaches the region of a lifting train 6, at the end of the conveyor belt 1; it is deflected upwards there (in the figure), as well as bent along an arc of a circle, which is taken up by a device 8 with carding rollers, in reciprocating movement according to the double arrow 7, and which turns back on the dorsal face of wound material 2.
  • a device 8 with carding rollers in reciprocating movement according to the double arrow 7, and which turns back on the dorsal face of wound material 2.
  • the entire length of a cut section of material to be wound 2 is wound in a bale 5, the mean diameter of which, indicated in phantom, could have a value 55 cm for example.
  • the rear end 2 thereof protrudes from the mean diameter d and forms a terminal step a few centimeters in height, depending on the thickness of the material to be wound which comes from be treated, for example in the form of a felt roll under a covering strip.
  • the bale 5 is constituted in the usual manner previously exposed, it must then be wrapped, around its entire periphery, in a protective envelope 9, which is kept available on a conveyor belt 10, located above the band conveyor 1 of the material to be wound 2, and which, after constitution of a bale 5, is brought intermittently onto the outer contour of the rotating bale 5.
  • the positioning of the protective casing 9 is carried out in the usual way for this purpose, namely that sections of protective casing 9 are produced, coming from a supply roller, and that these are transported on the conveyor belt 10, directly from the winding station 4, until the front edge 9a of the protective casing 9 which, in the working position shown in the figure, is already applied to the outer contour of the bale 5, comes to rest on a location 11 in the front end section of the conveyor belt 10.
  • the conveyor belt 10 can be made up in a well known manner, of a multiplicity of relatively narrow belts, located next to each other, which move on suction boxes 10a, which can create a depression in the space between neighboring conveyor belts. If no vacuum is applied, the protective envelope 9 rests on and is driven by the narrow conveyor belts. As soon as the protective casing section 9 must be stopped, the vacuum is put into service and it attracts the protective casing in the zone between the conveyor belts which continue to move, on the immobile surface of the casings 1 Oa , so that the protective cover is protected against entrainment by the conveyor belts which continue to move.
  • FIG. 1 shows an intermediate position of this driving movement, in which the front edge 9a of the protective casing 9, after pressure applied by the lifting train 6, which can also consist of a conveyor belt, has already been driven over more than half a turn of the bale 5 and moves in the direction of the carding roller device 8.
  • the rear end 9b of the protective casing section 9 still rests on the conveyor belt 10 and, due to the traction exerted by the rotating ball 5 on the protective casing 9, possibly seconded p ar belts of the conveyor belt 10, in slower movement, it is driven and introduced into the winding station 4.
  • the rear end 2a of the material to be wound 2 passes first of all past the exit zone of the conveyor belt 10 from the protective casing 9, while a significant length of the protective envelope 9 still rests on the conveyor belt 10 and is driven under traction from there.
  • the bonding area produced on the outer face of the area of the front edge 9a of the protective envelope 9, between the outer face of the area of the front edge 9a and the inner face of the area of the rear edge 9b of the envelope protection 9, is located at a significant distance from the protruding rear end 2a of the material to be wound and, consequently, it is to a large extent removed from the influence of the latter.
  • forces are applied in the bonding zone, by elastic reaction of the rear end 2a, these are exclusively shearing forces, which can be easily absorbed by bonding; spacers, which would tend to separate from one another the two parts of the protective envelope bonded in superposition, do not appear in any case.
  • the rear end 2a of the material to be wound 2 is covered by the protective envelope 9 at a time when a long part of the protective envelope 9 is still applied to the conveyor belt 10 and is retained there by friction, which can even possibly be increased by the establishment of a slight depression in the suction boxes 10a, so that the protective casing 9 severely stressed, under notable tensile stress, the rear end 2a of the material to be wound 2, and thus blocks it, after lifting the rear end 2a from the plane of the conveyor belt 1.
  • the outer contour of the bale 5 finished, wrapped in the protective envelope 9 is better suited to the ideal nominal contour, even in the area of the protruding rear end 2a, which not only improves the visual appearance, but also, thanks to an improved rolling possibility, to a possibility of e intact storage, etc. also facilitates subsequent handling of the finished product.
  • the only length necessary for the protective envelope 9 is that which provides sufficient overlap in the area of the front edge 9a and the rear edge 9b located above, so that the length of the protective envelope 9 on the outer contour of the ball 5 only needs to correspond to the length of the contour, plus the overlap (of 20 cm for example) necessary for bonding.
  • the front edge 9a of the protective envelope in the angular position shown of the bale 5, could however be located anywhere on the bale 5, in the range between the application surfaces of the conveyor belt 1 and the lifting gear 6, without this causing some disturbances, or even simply significant changes in the packaging conditions. Thanks to the prescription of a determined length of the section used of the protective envelope 9, the rear edge 9b of the protective envelope 9, after a complete revolution, is automatically placed on the outer surface of the front edge 9a, changes in the position of the front edge on the contour of the ball resulting only in a corresponding change in the position of the bonding location, without disturbing changes in working conditions.
  • the compressed air boxes 1b and 6b can be operated with a supply pressure of 400 to 500 mm of water approximately and, by means of an appropriate arrangement and dimensioning of the blowing orifices, they cause by air flow a pressure complementary to the front edge 9a of the protective envelope 9 on the outer contour of the belt 5 on the conveyor belt 1 or on the lifting belt 6. It has been found that up to speeds of the material to be wound 2 on the conveyor belt 1 of the order of 80 m / min, such assistance by compressed air boxes, 1b or 6b, can be dispensed with without problem. However, for higher feeding speeds, which can go up to 140 m / min, or even more, the assistance by compressed air which has just been described can be of great value.
  • the adhesion effect of the front edge 9a of the protective casing 9 on the bare, continuous surface exterior contour of the ball 5 can be obtained in different ways.
  • the protective envelope 9 can be electrostatically charged, in a well known manner, which is not shown in more detail, and adhere under the effect of this charge.
  • the adhesion effect due to the load need not in any way be limited to the front edge 9a of the protective casing 9, but may increase, over its entire surface, the friction drive. of the protective casing 9 on the outer contour of the rotating ball 5.
  • the precondition for such an electrostatic charge, either of the protective casing 9, or of the surface of the outer contour of the ball 5, is however a suitable choice of material, so that adhesion by electrostatic charge cannot be obtained in all cases.
  • a bonding aid unlike the adhesive which can be applied at the same time in the area of the rear edge 9b of the protective casing 9, must however not create any durable bonded assembly or similar phenomenon, but only one adhesion during wrapping which either must have disappeared at the latest when the protective covering 9 is removed by the user of the wound material 2, or else must be formed from the start in such a way that its elimination is possible without problem without deterioration of the external surface of the ball 5.
  • peeling aid it is possible, by way of example, to envisage a material whose adhesion effect can be eliminated by a peeling effect (known as “peel-off”), as it is d for use with so-called adhesive seals.
  • water with low surface tension is used as the bonding aid.
  • Water at low surface tension is a good wetting liquid, which forms a continuous film and therefore provides a good adhesion effect.
  • the water, which is introduced in small quantities is evacuated very simply by drying and evaporates in this way, so that when the protective envelope is removed 9 by the user, its front end 9a is applied simply, without any effect of adhesion or other connection, on the outer contour of the ball 5, and is detached from the latter after dissociation of the bonded assembly.
  • low surface tension water is inexpensive, easy to handle and treat.
  • a sponge 13 which is fixed on a pivoting ramp 14 and which is impregnated, in a manner not shown in more detail, with the liquid constituting the bonding aid.
  • the pivoting ramp 14 is arranged, in the direction of supply of the protective envelope 9, just before the stop location 11 for the front edge 9a of the protective envelope 9; it can be lowered on the surface of the conveyor belt 10 and lift again from it, according to the double arrow 15; it is also movable, in a manner not shown in more detail, normally in the plane of the figure, along the front edge 9a of the protective envelope 9.
  • the sponge 13 thus performs, on the upper face of the protective envelope 9, in the zone from its front edge 9a, a sweeping movement, which guarantees the appropriate supply of a continuous liquid film.
  • the protective envelope 9 With a zone thus wetted from the front edge 9a, the protective envelope 9, by removing the vacuum in the suction boxes (1 Oa arrives at the bare peripheral surface of the ball 5, at a distance as large as possible from the rear end 2a of the material to be wound 2, adheres to it and is driven, passing through the intermediate position shown, until the rear edge 9b of the protective casing 9 covers the driven front edge 9a and there In this way, it is possible to produce balls completely wrapped around the entire periphery, with a well-rounded peripheral surface, with low consumption of material for the protective envelope 9, in rapid succession, so that , depending on the speed of supply of the material to be wound 2 on the conveyor belt, it is possible to manufacture all-wrapped bales with unit times less than 10 seconds, under the best possible conditions of product safety ction.

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  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Basic Packing Technique (AREA)
  • Storage Of Harvested Produce (AREA)
  • Nonwoven Fabrics (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Packaging Of Special Articles (AREA)
  • Replacement Of Web Rolls (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Road Repair (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Road Signs Or Road Markings (AREA)
  • Wrappers (AREA)
  • Winding Of Webs (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Ropes Or Cables (AREA)
  • Packages (AREA)
  • Dowels (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (10)

1. Verfahren zum Umwickeln eines sich drehenden Ballens (8) aus einer kaschierten Mineralfaserbahn (2) in Form von Rollfilz mit einer Kaschierungsbahn, deren Aussenfläche geschlossen ist, mit einer im Zuge des Wickelvorganges des Ballens (5) aufzubringenden Schutzbahn (9) zur Verpackung, bei dem die an ihrem Hinterende (9b) mit Klebstoff beschichtete Schutzbahn (9) mit einer den Umfang des Ballens übersteigenden Länge mit ihrem Vorderende (9a) in den Umfangsbereich des drehenden Ballens (5) gebracht und ohne eine Verwendung von eine dauerhafte Verbindung ergebendem Klebstoff kraftschlüssig mit diesem verbunden wird, wonach nach entsprechender Drehung des Ballens das Hinterende der Schutzbahn (9) an die Aussenseite der darunterliegenden Wicklung der Schutzbahn zur Erzielung einer dauerhaften Verklebung angedrückt wird, dadurch gekennzeichnet, dass die klebstofffreie kraftschlüssige Mitnahmeverbindung zwischem dem Vorderende (9a) der Schutzbahn (9) und dem Ballen (5) ausschliesslich durch Adhäsionswirkung zwischen der dem Ballen zugewanden Innenfläche der Schutzbahn (9) und der nackten äusseren Oberfläche der Kaschierungsbahn erzeugt wird, dass das vordere Ende (9a) der Schutzbahn (9) mit Abstand von, vorzugsweise hinter, dem äusseren Ende der letzten Wicklung des Rollfilzes an den Ballen angelegt wird und dass die Länge der Schutzbahn (9) den Umfang des umhüllten Ballens um im wesentlichen nur die umfangsseitige Breite der Klebezone zwischen dem Hinterende der Schutzbahn und der Aussenseite der darunterliegenden Wicklung der Schutzbahn (9) übersteigt.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass zur Erzielung der Adhäsionswirkung zwischen der Innenfläche des Vorderendes (9a) der Schutzbahn (9) und der nackten äusseren Oberfläche der Kaschierungsbahn eine elektrostatische Aufladung der Schutzbahn und/oder der Oberfläche des Ballens durchgeführt wird.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zur Erzielung der Adhäsionswirkung zwischen der Innenfläche des Vorderendes (9a) der Schutzbahn (9) und der nackten äusseren Oberfläche der Kaschierungsbahn ein Haftvermittler auf die Innenfläche des Vorderendes der Schutzbahn und/oder die nackte äussere Oberfläche der Kaschierungsbahn, vorzugsweise jedoch nur auf die Innenfläche des Vorderendes der Schutzbahn aufgetragen wird.
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass als Haftvermittler eine einen im wesentlichen geschlossenen Film bildende Flüssigkeit verwendet wird.
5. Verfahren nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass als Haftvermittler eine sich im wesentlichen rückstandfrei verflüchtigende Flüssigkeit verwendet wird.
6. Verfahren nach Anspruch 4 oder 5,dadurch gekennzeichnet, dass als Haftvermittler Wasser mit niedriger Oberflächenspannung oder ein flüssiger Kohlenwasserstoff verwendet wird.
7. Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 3 bis 6, mit einer Zulaufbahn (1) für die kaschierte Mineralfaserbahn (2), einer Rollstation (4) für die Mineralfaserbahn und einer mit einem Endbereich zur Oberfläche des gebildeten Ballens hinweisenden Zulaufbahn für die Schutzbahn (9), mit der auf Länge geschnittene Abschnitte der an ihren hinteren Enden mit einer Klebstoffschicht überzogenen Schutzbahn (9) intermittierend und bezüglich des Zulaufs der Mineralfaserbahn synchronisiert der Rollstation zuführbar sind, dadurch gekennzeichnet, dass oberhalb des Endbereichs der Zulaufbahn (10) für die Schutzbahn (9) eine Auftrageinrichtung (12) für einen Haftvermittler, der zu keiner dauerhaften Verbindung führt, auf das dort taktweise ruhende Vorderende (9a) der Schutzbahn (9) angeordnet ist.
8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die Auftrageinrichtung (12) der Aufbringung benetzender Flüssigkeit als Haftvermittler einen Schwamm (13) aufweist, der in einer Wischbewegung über die Oberfläche der Schutzbahn (9) im Bereich von deren Vorderende (9a) führbar ist.
9. Vorrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass im Endbereich (3) der Zulaufbahn (1) für die Mineralfaserbahn (2) eine Blaseinrichtung (Druckluftkasten 1 b) zur Beaufschlagung der benachbarten Ballenoberfläche mit Druckluft vorgesehen ist.
10. Vorrichtung nach einem der Ansprüche 7 bis 9, bei der die Rollstation (4) am Ende der Zulaufbahn (1) für die Mineralfaserbahn (2) eine hierzu in einem spitzen Winkel angeordnete Aufstellbahn (6) zur Mitnahme des Vorderendes der Mineralfaserbahn nach oben zu Beginn der Bildung des Wickels (5) aufweist, dadurch gekennzeichnet, dass im Bereich der Aufstellbahn (6) eine Blaseinrichtung (Druckluftkasten 6b) zur Beaufschlagung der benachbarten Ballenoberfläche mit Druckluft vorgesehen ist.
EP84400810A 1983-04-20 1984-04-20 Verfahren und Vorrichtung zum Umhüllen eines Faserballens mit einer Schutzhülle Expired EP0131475B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84400810T ATE24160T1 (de) 1983-04-20 1984-04-20 Verfahren und vorrichtung zum umhuellen eines faserballens mit einer schutzhuelle.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3314289 1983-04-20
DE19833314289 DE3314289A1 (de) 1983-04-20 1983-04-20 Verfahren zum umwickeln eines sich drehenden ballens aus wickelmaterial, insbesondere aus einer kaschierten mineralfaserbahn, mit einer schutzbahn zur verpackung, sowie vorrichtung zur durchfuehrung des verfahrens

Publications (2)

Publication Number Publication Date
EP0131475A1 EP0131475A1 (de) 1985-01-16
EP0131475B1 true EP0131475B1 (de) 1986-12-10

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EP84400810A Expired EP0131475B1 (de) 1983-04-20 1984-04-20 Verfahren und Vorrichtung zum Umhüllen eines Faserballens mit einer Schutzhülle

Country Status (15)

Country Link
US (1) US4608807A (de)
EP (1) EP0131475B1 (de)
JP (1) JPS59221211A (de)
KR (1) KR930006464B1 (de)
AT (1) ATE24160T1 (de)
AU (1) AU568128B2 (de)
BR (1) BR8401834A (de)
CA (1) CA1294527C (de)
DE (2) DE3314289A1 (de)
DK (1) DK156210C (de)
ES (1) ES8500840A1 (de)
FI (1) FI76978C (de)
NO (1) NO166699C (de)
TR (1) TR22457A (de)
ZA (1) ZA843018B (de)

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JPS59221211A (ja) 1984-12-12
NO841528L (no) 1984-10-22
DE3461620D1 (en) 1987-01-22
EP0131475A1 (de) 1985-01-16
DK193384D0 (da) 1984-04-13
DK193384A (da) 1984-10-21
ZA843018B (en) 1985-02-27
ES531598A0 (es) 1984-12-01
NO166699B (no) 1991-05-21
AU2702684A (en) 1984-10-25
DE3314289C2 (de) 1987-01-02
TR22457A (tr) 1987-07-13
DK156210C (da) 1989-11-27
BR8401834A (pt) 1984-11-27
KR850000340A (ko) 1985-02-26
ATE24160T1 (de) 1986-12-15
US4608807A (en) 1986-09-02
DK156210B (da) 1989-07-10
KR930006464B1 (ko) 1993-07-16
ES8500840A1 (es) 1984-12-01
CA1294527C (fr) 1992-01-21
DE3314289A1 (de) 1984-10-25
FI76978B (fi) 1988-09-30
FI841557A (fi) 1984-10-21
AU568128B2 (en) 1987-12-17
FI841557A0 (fi) 1984-04-18
NO166699C (no) 1991-08-28
FI76978C (fi) 1989-01-10

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