EP0298481B2 - Method and device for the oxygen-free packaging of products - Google Patents
Method and device for the oxygen-free packaging of products Download PDFInfo
- Publication number
- EP0298481B2 EP0298481B2 EP88110877A EP88110877A EP0298481B2 EP 0298481 B2 EP0298481 B2 EP 0298481B2 EP 88110877 A EP88110877 A EP 88110877A EP 88110877 A EP88110877 A EP 88110877A EP 0298481 B2 EP0298481 B2 EP 0298481B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- containers
- product
- tunnel
- oxygen
- liquid nitrogen
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 19
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 9
- 239000001301 oxygen Substances 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 9
- 238000001704 evaporation Methods 0.000 abstract description 2
- 230000008020 evaporation Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 239000013039 cover film Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Images
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
- B65B25/00—Packaging other articles presenting special problems
- B65B25/001—Packaging other articles presenting special problems of foodstuffs, combined with their conservation
Definitions
- the invention relates to a method and a device for the oxygen-free packaging of product in containers with the method steps of filling the product into the containers, metering liquid nitrogen into the containers and closing the containers in an inert zone.
- a common packaging method is, for example, to evacuate the package and then seal it.
- this can only be carried out with flexible packings, since otherwise the pack can easily be damaged by forces arising from the vacuum.
- this method is associated with an enormous expenditure on equipment. Elaborate vacuum chambers and at least one powerful vacuum pump are required.
- a further development of the above-mentioned method consists in back-gassing the evacuated pack with inert, oxygen-free gas and then closing it. This method can then also be used to pack product in rigid containers.
- Another packaging method involves purging the package with an inert, oxygen-free gas. The pack is then closed. However, packages filled with lumpy product are not obtained with sufficient oxygen freedom afterwards by flushing with inert gas in a reasonable time.
- WO 86/06 347 discloses a process for the oxygen-free packaging of products, in which the packaging is freed of oxygen by injecting an inert fluid into the packaging. At the same time, an inert atmosphere is created by spraying inert fluid above the packaging.
- Liquid nitrogen for example, is suitable as an inert fluid. Since in practice the product can only be filled into the packaging outside of the inert zone, the liquid nitrogen must be sprayed onto the product already filled into the packaging. Due to the resulting slow evaporation process, an insufficient rinsing effect is achieved. In addition, the known method is not fully satisfactory economically because it requires a relatively high nitrogen consumption.
- the object of the present invention is therefore to design a method and a device of the type mentioned at the outset in such a way that oxygen-free packaging of products takes place in a simple and economical manner without the disadvantages of previous methods mentioned.
- liquid nitrogen is metered into the container immediately before the product is filled into the container and before the container is transferred to the inert zone, and gaseous nitrogen heated to 40-80 ° C. is fed into the inert zone.
- the liquid nitrogen is poured into the containers intended for packaging the product. Immediately after this step, the product is placed in the container. Due to the intensive contact of the liquid nitrogen with the product, the liquid nitrogen evaporates rapidly, so that the resulting large gas volume of nitrogen gas displaces the oxygen from the containers. In the subsequent inert zone, the addition of nitrogen prevents atmospheric oxygen from entering the containers before being sealed. The containers are then closed within the inert zone.
- the liquid nitrogen is expediently filled into the containers in an amount which is sufficient to flush the containers and the product free of oxygen after the liquid nitrogen has evaporated.
- oxygen-free packaging of product in containers is achieved without expensive equipment, such as e.g. Vacuum pumps and vacuum chambers would be required.
- the process according to the invention creates an oxygen-free atmosphere in the containers within a short time, which also ensures packaging and storage of oxygen-sensitive products. In this way e.g. Foods are permanently protected from oxidation processes so that their shelf life is improved.
- the invention is particularly suitable for packaging lumpy goods such as Nuts, granules etc., in metal containers or combination cans.
- An apparatus for carrying out the method consists of a conveyor belt for receiving the containers, a tunnel being kept under the inert conditions being arranged along the conveyor belt and supply lines for nitrogen being connected to the interior of the tunnel, a filling device for the product and a closing device within the tunnel for Close the container.
- a metering device connected to a storage container for liquid nitrogen is arranged in front of the tunnel in such a device along the conveyor belt, and the filling device for the product is arranged between the metering device for liquid nitrogen and the tunnel.
- the tunnel has a length of approximately 0.5 to 3 m.
- the invention is explained in more detail below on the basis of an exemplary embodiment shown schematically in a drawing:
- the figure shows a schematic representation of the process sequence in the oxygen-free packaging of product according to the invention in containers.
- the containers provided for packaging are fed to two different process steps on a conveyor belt.
- a first process step liquid nitrogen is filled into a container 1 from a metering device 3 via line 10 in an amount of 10 g.
- the conveyor belt 2 conveys the container 1 further to a filling device 4 for the product 5 to be packaged.
- There the product 5 is introduced into the container 1.
- a cover film 6 is then firmly dotted on the container 1.
- gaseous nitrogen heated to 60 ° C. is supplied via lines 8.
- the conveyor belt 2 transports the container 1 through the tunnel, which has a length of 2 m. Shortly before leaving the tunnel, the container 1 is still closed within the tunnel by a sealing device 9 designed as a sealing device.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vacuum Packaging (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum sauerstofffreien Verpacken von Produkt in Behälter mit den Verfahrensschritten Einfüllen des Produktes in die Behälter, Dosieren von flüssigem Stickstoff in die Behälter und Verschließen der Behälter in einer inerten Zone.The invention relates to a method and a device for the oxygen-free packaging of product in containers with the method steps of filling the product into the containers, metering liquid nitrogen into the containers and closing the containers in an inert zone.
Bei einigen Produkten, insbesondere Lebensmittelprodukten, ist es vorteilhaft, sie unter Ausschluß von Sauerstoff aufzubewahren, um z.B. deren Haltbarkeit sicherzustellen. Es sind verschiedene Verfahren bekannt, um innerhalb einer Packung eine sauerstofffreie Atmosphäre zu schaffen.For some products, especially food products, it is advantageous to store them in the absence of oxygen, e.g. ensure their durability. Various methods are known for creating an oxygen-free atmosphere within a package.
Eine übliche Verpackungsmethode besteht z.B. darin, die Packung zu evakuieren und anschließend zu verschließen. Dies ist jedoch nur mit flexiblen Packungen durchführbar, da sonst durch aufgrund des Vakuums auftretende Kräfte eine Beschädigung der Packung leicht möglich ist. Außerdem ist diese Methode mit einem enormen apparativen Aufwand verbunden. Es sind aufwendige Vakuumkammern und mindestens eine leistungsfähige Vakuumpumpe erforderlich. Überdies ergeben sich Probleme bei Produkten mit niedrigsiedenden Armomastoffen, wie z.B. Kaffee, da diese dann aufgrund des Vakuums dem Produkt verlorengehen.A common packaging method is, for example, to evacuate the package and then seal it. However, this can only be carried out with flexible packings, since otherwise the pack can easily be damaged by forces arising from the vacuum. In addition, this method is associated with an enormous expenditure on equipment. Elaborate vacuum chambers and at least one powerful vacuum pump are required. In addition, problems arise with products with low-boiling flavoring substances, such as coffee, since these are then lost to the product due to the vacuum.
Eine Weiterentwicklung der genannten Methode besteht darin, die evakuierte Packung mit inertem, sauerstofffreiem Gas rückzubegasen und anschließend zu verschließen. Damit kann diese Methode dann auch zum Abpacken von Produkt in starren Behältern verwendet werden.A further development of the above-mentioned method consists in back-gassing the evacuated pack with inert, oxygen-free gas and then closing it. This method can then also be used to pack product in rigid containers.
Eine andere Verpackungsmethode sieht ein Spülen der Packung mit einem inerten, sauerstofffreien Gas vor. Anschließend wird die Packung verschlossen. Mit stückigem Produkt gefüllte Packungen werden jedoch im nachhinein durch Spülung mit inertem Gas in angemessener Zeit nicht mit ausreichender Sauerstofffreiheit erhalten.Another packaging method involves purging the package with an inert, oxygen-free gas. The pack is then closed. However, packages filled with lumpy product are not obtained with sufficient oxygen freedom afterwards by flushing with inert gas in a reasonable time.
Es ist auch bekannt, eine sauerstofffreie Atmosphäre innerhalb der Packung durch Sauerstoffbindung in der Packung mit Chemikalien zu erreichen. Diese Methode ist jedoch bei Lebensmittelpackungen z.B. aufgrund unsachgemäßer Verwendungsmöglichkeiten der Chemikalien durch Kinder bedenklich.It is also known to achieve an oxygen-free atmosphere within the package by binding oxygen in the package with chemicals. However, this method is used for food packaging e.g. due to improper use of the chemicals by children.
Schließlich ist aus der WO 86/06 347 ein Verfahren zum sauerstofffreien Verpacken von Produkt bekannt, bei dem die Verpackung durch Einspritzen eines inerten Fluids in die Verpackung von Sauerstoff befreit wird. Gleichzeitig wird durch Verspritzen von inertem Fluid oberhalb der Verpackung eine inerte Atmosphäre geschaffen. Als inertes Fluid kommt z.B. flüssiger Stickstoff in Betracht. Da das Produkt in der Praxis nur außerhalb, also vor der inerten Zone, in die Verpackung eingefüllt werden kann, muß der flüssige Stickstoff auf das bereits in die Verpackung eingefüllte Produkt aufgespritzt werden. Aufgrund des resultierenden langsamen Verdampfungsvorgangs wird nur ein unzureichender Spüleffekt erreicht. Außerdem ist das bekannte Verfahren wirtschaftlich nicht voll zufriedenstellend, da es einen relativ hohen Stickstoffverbrauch erfordert.Finally, WO 86/06 347 discloses a process for the oxygen-free packaging of products, in which the packaging is freed of oxygen by injecting an inert fluid into the packaging. At the same time, an inert atmosphere is created by spraying inert fluid above the packaging. Liquid nitrogen, for example, is suitable as an inert fluid. Since in practice the product can only be filled into the packaging outside of the inert zone, the liquid nitrogen must be sprayed onto the product already filled into the packaging. Due to the resulting slow evaporation process, an insufficient rinsing effect is achieved. In addition, the known method is not fully satisfactory economically because it requires a relatively high nitrogen consumption.
Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren und eine Vorrichtung der eingangs genannten Art so auszugestalten, daß eine sauerstofffreie Verpackung von Produkten auf einfache und wirtschaftliche Weise erfolgt, ohne daß die genannten Nachteile bisheriger Verfahren auftreten.The object of the present invention is therefore to design a method and a device of the type mentioned at the outset in such a way that oxygen-free packaging of products takes place in a simple and economical manner without the disadvantages of previous methods mentioned.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß unmittelbar vor dem Einfüllen des Produktes in die Behälter und vor Überführung der Behälter in die inerte Zone flüssiger Stickstoff in die Behälter dosiert wird und in der inerten Zone auf 40 - 80°C erwärmter gasförmiger Stickstoff zugeführt wird.This object is achieved in that liquid nitrogen is metered into the container immediately before the product is filled into the container and before the container is transferred to the inert zone, and gaseous nitrogen heated to 40-80 ° C. is fed into the inert zone.
Der flüssige Stickstoff wird in die zur Verpackung des Produkts vorgesehenen Behälter eingefüllt. Unmittelbar nach diesem Verfahrensschritt wird das Produkt in die Behälter eingegeben. Durch den intensiven Kontakt des flüssigen Stickstoffs mit dem Produkt verdampft der flüssige Stickstoff rasch, so daß das entstehende große Gasvolumen an Stickstoffgas den Sauerstoff aus den Behältern verdrängt. In der nachfolgenden inerten Zone wird durch Zufuhr von Stickstoff verhindert, daß vor dem Verschließen Luftsauerstoff in die Behälter eindringen kann. Anschließend werden die Behälter innerhalb der inerten Zone verschlossen.The liquid nitrogen is poured into the containers intended for packaging the product. Immediately after this step, the product is placed in the container. Due to the intensive contact of the liquid nitrogen with the product, the liquid nitrogen evaporates rapidly, so that the resulting large gas volume of nitrogen gas displaces the oxygen from the containers. In the subsequent inert zone, the addition of nitrogen prevents atmospheric oxygen from entering the containers before being sealed. The containers are then closed within the inert zone.
Durch die Zufuhr von auf 40 bis 80°C erwärmtem gasförmigem Stickstoff in der inerten Zone wird die den Behältern beim Verdampfen des flüssigen Stickstoffs entzogene Wärme wieder ersetzt. Unterbliebe dese Maßnahme, so käme es nach Temperaturausgleich zu meist unerwünschten Druckerhöhungen in den Behältern.By supplying gaseous nitrogen heated to 40 to 80 ° C in the inert zone, the heat extracted from the containers when the liquid nitrogen evaporates is replaced again. If this measure were not done, there would be mostly undesirable pressure increases in the containers after the temperature equalization.
Zweckmäßigerweise wird der flüssige Stickstoff in einer Menge in die Behälter eingefüllt, die ausreicht, nach Verdampfen des flüssigen Stickstoffs die Behälter und das Produkt sauerstofffrei zu spülen.The liquid nitrogen is expediently filled into the containers in an amount which is sufficient to flush the containers and the product free of oxygen after the liquid nitrogen has evaporated.
Mit dem erfindungsgemäßen Verfahren wird ein sauerstofffreies Verpacken von Produkt in Behältern erreicht, ohne daß aufwendige Apparaturen, wie z.B. Vakuumpumpen und Vakuumkammern, erforderlich wären. Durch das erfindungsgemäße Verfahren wird innerhalb kurzer Zeit eine sauerstofffreie Atmosphäre in den Behältern geschaffen, die auch eine Verpackung und Aufbewahrung von sauerstoffempfindlichen Produkten gewährleistet. Auf diese Weise können z.B. Lebensmittel vor Oxidationsprozessen dauerhaft geschützt werden, so daß ihre Haltbarkeit verbessert wird.With the method according to the invention, oxygen-free packaging of product in containers is achieved without expensive equipment, such as e.g. Vacuum pumps and vacuum chambers would be required. The process according to the invention creates an oxygen-free atmosphere in the containers within a short time, which also ensures packaging and storage of oxygen-sensitive products. In this way e.g. Foods are permanently protected from oxidation processes so that their shelf life is improved.
Die Erfindung eignet sich besonders zum Verpacken von stückigen Gütern, wie z.B. Nüssen, Granulaten etc., in Metallbehältern oder Kombidosen.The invention is particularly suitable for packaging lumpy goods such as Nuts, granules etc., in metal containers or combination cans.
Eine Vorrichtung zur Durchführung des Verfahrens besteht aus einem Transportband zur Aufnahme der Behälter, wobei entlang des Transportbandes ein unter Inertbedingungen gehaltener Tunnel angeordnet ist und Zufuhrleitungen für Stickstoff mit dem Innenraum des Tunnels verbunden sind, einer Einfülleinrichtung für das Produkt und einer Verschließeinrichtung innerhalb des Tunnels zum Verschließen der Behälter.An apparatus for carrying out the method consists of a conveyor belt for receiving the containers, a tunnel being kept under the inert conditions being arranged along the conveyor belt and supply lines for nitrogen being connected to the interior of the tunnel, a filling device for the product and a closing device within the tunnel for Close the container.
Erfindungsgemäß ist bei einer derartigen Vorrichtung entlang des Transportbandes eine mit einem Vorratsbehälter für flüssigen Stickstoff verbundene Dosiereinrichtung vor dem Tunnel angeordnet und die Einfülleinrichtung für das Produkt ist zwischen der Dosiereinrichtung für flüssigen Stickstoff und dem Tunnel angeordnet.According to the invention, a metering device connected to a storage container for liquid nitrogen is arranged in front of the tunnel in such a device along the conveyor belt, and the filling device for the product is arranged between the metering device for liquid nitrogen and the tunnel.
Es hat sich als vorteilhaft erwiesen, daß der Tunnel eine Länge von ca. 0,5 bis 3 m aufweist.It has proven to be advantageous that the tunnel has a length of approximately 0.5 to 3 m.
Die Erfindung wird im folgenden anhand eines in einer Zeichnung schematisch dargestellten Ausführungsbeispiels näher erläutert:
Die Figur zeigt eine schematische Darstellung des Verfahrensablaufs beim erfindungsgemäßen sauerstofffreien Verpacken von Produkt in Behältern.The invention is explained in more detail below on the basis of an exemplary embodiment shown schematically in a drawing:
The figure shows a schematic representation of the process sequence in the oxygen-free packaging of product according to the invention in containers.
Die zur Verpackung vorgesehenen Behälter werden an einem Transportband 2 verschiedenen Verfahrensschritten zugeführt. In einem ersten Verfahrensschritt wird flüssiger Stickstoff aus einer Dosiereinrichtung 3 über Leitung 10 in einer Menge von 10 g in einen Behälter 1 eingefüllt. Das Transportband 2 befördert den Behälter 1 weiter zu einer Einfülleinrichtung 4 für das zu verpackende Produkt 5. Dort wird das Produkt 5 in den Behälter 1 eingegeben. Anschließend wird am Behälter 1 eine Deckelfolie 6 festgepunktet. In einer nachfolgenden als Tunnel 7 ausgebildeten inerten Zone wird auf 60°C erwärmter gasförmiger Stickstoff über Leitungen 8 zugeführt. Das Transportband 2 befördert den Behälter 1 durch den Tunnel, der eine Länge von 2 m aufweist, hindurch. Kurz vor Verlassen des Tunnels wird der Behälter 1 noch innerhalb des Tunnels durch eine Versiegelungseinrichtung ausgebildete Verschließeinrichtung 9 verschlossen.The containers provided for packaging are fed to two different process steps on a conveyor belt. In a first process step, liquid nitrogen is filled into a
Claims (3)
- Process for oxygen-free packaging of product in containers with the process steps of filling the containers with the product, metering liquid nitrogen into the containers and closing the containers in an inert zone, characterised in that the liquid nitrogen is metered into the containers (1) immediately before filling the containers (1) with the product and before transporting the containers (1) into the inert zone (7), and gaseous nitrogen heated to 40 - 80°C is supplied in the inert zone (7).
- Process according to claim 1, characterised in that a cover sheet (6) is secured to the container (1) at points after filling the containers (1) with the product and before transporting the containers (1) into the inert zone (7).
- Device for implementing the process according to claim 1 with a conveyor belt to receive the containers, a tunnel kept under inert conditions being disposed along the conveyor belt, and supply lines for gaseous nitrogen being connected with the interior of the tunnel, with a filling device for the product and a closing device inside the tunnel to close the containers, characterised in that a metering device (3) for liquid nitrogen connected to a storage container for liquid nitrogen is disposed along the conveyor belt (2) before the tunnel (7) and the filling device (4) for the product is disposed between the metering device (3) and the tunnel (7), and in that the supply lines (8) for the gaseous nitrogen can be fed with gaseous nitrogen heated to 40 - 80°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT88110877T ATE74858T1 (en) | 1987-07-09 | 1988-07-07 | METHOD AND DEVICE FOR OXYGEN-FREE PRODUCT PACKAGING. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873722747 DE3722747A1 (en) | 1987-07-09 | 1987-07-09 | METHOD AND DEVICE FOR PACKING THE PRODUCT WITHOUT OXYGEN |
| DE3722747 | 1987-07-09 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP0298481A2 EP0298481A2 (en) | 1989-01-11 |
| EP0298481A3 EP0298481A3 (en) | 1989-11-23 |
| EP0298481B1 EP0298481B1 (en) | 1992-04-15 |
| EP0298481B2 true EP0298481B2 (en) | 1995-01-18 |
Family
ID=6331262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88110877A Expired - Lifetime EP0298481B2 (en) | 1987-07-09 | 1988-07-07 | Method and device for the oxygen-free packaging of products |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0298481B2 (en) |
| AT (1) | ATE74858T1 (en) |
| DE (2) | DE3722747A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3912153C1 (en) * | 1989-04-13 | 1990-08-02 | Christoph V. Dr.Rer.Nat. Stein | Preventing deterioration of solns. by oxidn. - by feeding solns. in containers from which air has been expelled by injected protective gas |
| ES2070026B1 (en) * | 1991-12-12 | 1996-04-16 | Canariense Tabacos | PACKAGING PROCEDURE FOR CIGARS. |
| US7060905B1 (en) | 2001-11-21 | 2006-06-13 | Raytheon Company | Electrical cable having an organized signal placement and its preparation |
| EP1581430A1 (en) * | 2002-12-20 | 2005-10-05 | CFS Germany GmbH | Packaging machine path comprising a device for impinging a gaseous or volatile substance upon packagings |
| DE10311334A1 (en) * | 2002-12-20 | 2004-07-08 | Cfs Germany Gmbh | Packaging machine line with device for loading the packaging with a gaseous or volatile substance |
| DE102006002554A1 (en) * | 2006-01-18 | 2007-07-19 | Sig Technology Ag | Process for preserving oxygen-sensitive products and a support element |
| US20120152791A1 (en) * | 2010-12-20 | 2012-06-21 | Air Liquide Industrial U.S. Lp | Method for effective de-oxygenation of product containers for use as containers for oxygen sensitive products |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2917880A (en) * | 1957-04-24 | 1959-12-22 | Owens Illinois Glass Co | Method of and apparatus for packaging food products |
| US3477192A (en) * | 1967-03-02 | 1969-11-11 | American Cyanamid Co | Container filling process |
| GB2089181B (en) * | 1980-12-15 | 1984-02-01 | Dearn Peter Thomas | An anchor especially an angler's sinker weight |
| GB2125937B (en) * | 1982-08-26 | 1986-06-25 | Metal Box Plc | Dispensing volatile liquids |
| EP0173763A1 (en) * | 1984-09-07 | 1986-03-12 | RAKU Kunststoff-Verpackungswerke GmbH | Package for filler material and a method for packaging filler material |
| DE3625081A1 (en) * | 1986-07-24 | 1988-02-04 | Lieder Maschinenbau Gmbh & Co | METHOD AND DEVICE FOR THE PRESERVATION OF GOODS INCLUDED IN A CONTAINER |
-
1987
- 1987-07-09 DE DE19873722747 patent/DE3722747A1/en not_active Ceased
-
1988
- 1988-07-07 EP EP88110877A patent/EP0298481B2/en not_active Expired - Lifetime
- 1988-07-07 AT AT88110877T patent/ATE74858T1/en not_active IP Right Cessation
- 1988-07-07 DE DE8888110877T patent/DE3870057D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0298481B1 (en) | 1992-04-15 |
| DE3870057D1 (en) | 1992-05-21 |
| EP0298481A2 (en) | 1989-01-11 |
| DE3722747A1 (en) | 1989-01-19 |
| EP0298481A3 (en) | 1989-11-23 |
| ATE74858T1 (en) | 1992-05-15 |
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