EP0581122B2 - Procédé et dispositif pour emballer des marchandises exemptes d'oxygène - Google Patents

Procédé et dispositif pour emballer des marchandises exemptes d'oxygène Download PDF

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Publication number
EP0581122B2
EP0581122B2 EP93111310A EP93111310A EP0581122B2 EP 0581122 B2 EP0581122 B2 EP 0581122B2 EP 93111310 A EP93111310 A EP 93111310A EP 93111310 A EP93111310 A EP 93111310A EP 0581122 B2 EP0581122 B2 EP 0581122B2
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EP
European Patent Office
Prior art keywords
container
gas
covering
border
distributing element
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
EP93111310A
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German (de)
English (en)
Other versions
EP0581122B1 (fr
EP0581122A1 (fr
Inventor
Franz Dipl.-Ing. Garnreiter (Fh)
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.)
Linde GmbH
Original Assignee
Linde GmbH
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
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Application filed by Linde GmbH filed Critical Linde GmbH
Publication of EP0581122A1 publication Critical patent/EP0581122A1/fr
Publication of EP0581122B1 publication Critical patent/EP0581122B1/fr
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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
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/043—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles acting horizontally between an upper and a lower part of the container or wrapper, e.g. between container and lid

Definitions

  • the invention relates to a method for oxygen-free packaging of goods in one open container at the top with a container edge delimiting the container at the top, in which the goods are filled into the container and the container interior with a Gas is flushed before the container is sealed gas-tight with a cover, the cover during the washing process a short distance above the Container edge is held and the gas through one of the container edge and the Cover formed gap is discharged from the interior of the container, as well as a Device for performing the method.
  • a common packaging method is e.g. in evacuating the pack and then close. However, this is only with flexible packs feasible, since otherwise due to the forces arising from the vacuum Damage to the packaging is easily possible. This method is also included an enormous expenditure on equipment.
  • a further development of the method mentioned is the evacuated pack back-gassed with inert, oxygen-free gas, and then sealed. This method can then also be used to pack product in rigid containers be used. Such a method is for example from AT-B-347 352 known. To avoid spraying the packaged goods during evacuation, in the method proposed in this document the level of the vacuum so limited that the boiling point of the goods to be packaged is not reached. For this a control device is provided, which is individual for each pack from the Temperature of the goods according to the associated vapor pressure curve the size of the Vacuum determined.
  • the object of the present invention is a method of the type mentioned and to design an apparatus for performing the method so that a oxygen-free packaging of goods is carried out in a simple and economical manner, without the mentioned disadvantages of previous methods and devices occur.
  • This object is achieved in that the gas through a in the Cover provided passage opening on a central point in the container arranged gas distribution element is inflated, the gas through the Gas distribution element deflected in the horizontal direction and radially in the Container interior is transferred, the gas released directly into the atmosphere is, the outflow cross sections for the gas are set so low that in Sufficient gas pressure is produced to keep the air out of the tank interior To displace the interior of the container without the need for evacuation devices, after the rinsing process, the cover is attached to the edge of the container and the Connection between the passage opening and the container interior interrupted becomes.
  • the invention further relates to a device for carrying out the method an open container with a cover that can be closed gastight with a the top of the container border and one on the edge of the container retractable cover in the unlocked state of the container in a little Distance is positioned above the edge of the container.
  • a gas distribution element is attached at a central point in the container, the cover in the unlocked state of the container with the Gas distribution element forms a gap while the cover in the closed State rests on the edge of the container and the gap between the gas distribution element and the cover is closed, vertically above the gas distribution element in the Cover a gas passage opening is arranged in the unlocked Condition of the container formed by the container edge and the cover Outflow cross sections for the gas immediately, without the interposition of Evacuation facilities that are open to the atmosphere and that Outflow cross sections for the gas are set so low that in A sufficient gas pressure can be produced to keep the air out of the container interior To displace container interior.
  • the invention is particularly suitable for the oxygen-free packaging of multi-compartment menu trays, in which the individual subjects by Compartment partitions that converge in a central container area, are separated from each other.
  • the gas distribution element is according to the invention located in the area where the compartment partitions converge. To this It is achieved that the individual fan volumes from one place can be flushed evenly with the gas.
  • the gas distribution element is designed as a circular flat surface, which lies in a (imaginary) common horizontal plane with the edge of the container. This has the consequence that the distance of the cover from the Gas distribution element and the container edge is the same and when closing the Container cover on both the edge of the container and on the Gas distribution element rests.
  • the cover is expediently on the gas distribution element sealed up. This is the passage opening provided for the gas supply in the Cover after the container has been closed by the gas distribution element covered so that no more atmospheric oxygen can get into the container from the outside.
  • the gas distribution element cup-shaped, the cup rim with the container rim in one (imaginary) common horizontal plane. After closing the container the cover lies on the edge of the container and the rim of the cup, so that for the Gas supply provided passage opening in the cover only with the Interior of the cup is connected, which in turn due to the cover lying on the edge of the cup no longer with the interior of the container connected is. In this variant, too, there can no longer be atmospheric oxygen get into the outside of the container.
  • the container can be closed gas-tight, is usually on the Applied a sealing surface on the container edge, on which the cover is attached.
  • the gas distribution element is preferably in the radial direction by a Sealing area limited so that the cover on the outer edge of the Gas distribution element can be attached. So the entire container interior both towards the edge of the container and towards the opening in the cover sealed gastight.
  • an inert gas in particular gaseous nitrogen, or a mixed gas, in particular an N 2 / CO 2 mixed gas or an N 2 / CO 2 / O 2 mixed gas with possible proportions of argon, helium or carbon monoxide, is expediently used used.
  • the gaseous nitrogen displaces the oxygen from the container and creates an inert atmosphere inside the container, which increases the shelf life of the food.
  • the invention enables a uniform gas purging of the container from one place out.
  • oxygen-free packaging of Product reached in containers without expensive equipment, such as. Vacuum pumps and vacuum chambers would be required.
  • the method according to the invention becomes oxygen-free within a short time Atmosphere created in the containers, which is also a packaging and Guaranteed storage of oxygen sensitive products. In this way can e.g. Food is permanently protected against oxidation processes, so that their durability is improved.
  • the invention is particularly suitable for packaging finished food products in single or multi-compartment menu trays.
  • a container 6 designed as a menu shell is shown as it used for example for packaging finished food products.
  • the menu tray 6 has a gas distribution element 8 in the middle, which the gas flow coming from the gas passage opening 9 in the cover 2 in redirects the horizontal direction and radially evenly distributed to the container interior 4.5 issues.
  • a gas supply line 3 is passed through the passage opening 9, over the gaseous nitrogen on the circular flat surface
  • Gas distribution element 8 is inflated vertically from above.
  • the cover 2 is in small distance, preferably 1 to 30 mm, above the gas distribution element 8 and the container edge 10 held.
  • the Gas supply line 3 as a tube with a tube sheet and lateral openings on formed lower end of the tube.
  • the gas supply line designed in this way works itself as a gas distribution element.
  • the gas is passed through the tube sheet in a horizontal direction deflected and through the side openings radially into the container interior (4, 5) submitted.
  • the area 5 of the container interior is covered by the filled goods, e.g. a Finished food product, filled out.
  • the area 4 above is usually referred to as the container head space.
  • the entire container interior 4, 5 can be arranged from a central location be flushed oxygen-free. This not only removes the air from the container head space 4 but also from the gaps formed by the goods in area 5 flushed oxygen-free.
  • the path of the nitrogen gas is shown in the figure with arrows. After rinsing of the container interior 4, 5, the nitrogen gas is from the container edge 10th and the cover 2 formed gap released into the atmosphere.
  • menu tray 6 is completely flushed with the nitrogen gas and free of oxygen, then the cover by means of the sealing device 1 on the container edge 10 and the gas distribution element 8 lowered.
  • the menu tray 6 is by means of sealing surfaces on the Container edge 10 and the gas distribution element 8 are applied, sealed gas-tight. For this reason, no more atmospheric oxygen can enter the gas passage opening 9 either Container interior 4, 5 arrive.
  • Figure 2 shows a plan view of a multi-compartment menu tray, the Compartment partitions 11 in a central area of the menu tray converge.
  • the gas distribution element 8 is arranged in the central area and designed as a small, upwardly open cup with a cup rim on which a sealing surface 7 is applied.
  • the nitrogen gas is blown into the cup and enters the individual areas evenly over the rim of the cup Fan volumes of the menu tray above.
  • the nitrogen gas displaces the atmospheric oxygen from the fan volumes and is via the container edge 10 to the atmosphere submitted. In this way, the entire container volume of one Fumigation point can be flushed out of completely oxygen-free.
  • the way of Nitrogen gas is again shown in the figure by arrows.
  • the one not shown in the figure is located Cover on the sealing surfaces 7 of the gas distribution element 8 and the edge of the container 10 on.
  • the gas passage opening for the nitrogen supply comes in the Cover to lie directly over the cup interior of the gas distribution element 8, the gas-tight from the interior of the container thanks to the cover on the edge of the cup is separated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vacuum Packaging (AREA)

Claims (6)

  1. Procédé pour emballer des marchandises exemptes d'oxygène dans un récipient ouvert vers le haut, présentant un bord de récipient qui délimite le récipient vers le haut, selon lequel les marchandises sont placées dans le récipient et l'espace intérieur du récipient est balayé par un gaz, avant que le récipient ne soit fermé de manière étanche aux gaz par une couverture, dans lequel le gaz est expulsé hors de l'espace intérieur du récipient via la fente formée par le bord de récipient et la couverture, caractérisé en ce que la couverture (2) est maintenue, pendant l'opération de balayage, à faible distance au-dessus du bord de récipient, le gaz étant insufflé via un orifice de passage (9) prévu dans la couverture (2) sur un élément de distribution de gaz (8) disposé au centre dans le récipient (6), en ce que le gaz est dévié dans la direction horizontale via l'élément de distribution de gaz (8) et est transféré radialement dans l'espace intérieur (4, 5) du récipient, en ce que le gaz est directement amené à l'atmosphère et en ce que les profilés d'évacuation pour les gaz sont réglés à un niveau si faible qu'une pression suffisante est produite dans l'espace intérieur du récipient afin d'expulser l'air de l'espace intérieur du récipient, sans nécessiter l'utilisation de dispositifs d'évacuation, et après l'opération de balayage, la couverture (2) est fixée sur le bord (10) de récipient et la liaison entre l'orifice de passage (9) et l'espace intérieur (4, 5) du récipient est interrompue.
  2. Dispositif pour l'exécution du procédé suivant la revendication 1, comprenant un récipient (6) ouvert vers le haut, qui peut être fermé de manière étanche aux gaz au moyen d'une couverture (2) abaissable, présentant un bord de récipient (10) délimitant le récipient vers le haut, qui, à l'état non fermé du récipient (6) est positionnée à une faible distance au dessus du bord de récipient (10), caractérisé en qu'un élément de distribution de gaz (8) est disposé au centre dans le récipient (6), la couverture (2), a l'état non fermé du récipient (6) formant une fente avec l'élément de distribution de gaz (8) alors qu'à l'état fermé, la couverture (2) se trouve sur le bord (10) du récipient et la fente ménagée entre l'élément de distribution de gaz (8) et la couverture (2) est fermée, et un orifice de passage de gaz (9) est prévu à la verticale au-dessus de l'élément de distribution de gaz (8) dans la couverture (2), et en ce que, à l'état non fermé du récipient (6), les sections d' évacuation pour le gaz formées par le bord de récipient (10) et la couverture (2), sans couplage intermédiaire de dispositifs d'évacuation, sont ouvertes directement vers l'atmosphère, et en ce que les sections d'évacuation pour le gaz sont réglées à un niveau si faible qu'une pression de gaz suffisante soit produite dans l'espace intérieur du récipient, afin d'expulser l'air de l'espace intérieur du récipient.
  3. Dispositif suivant la revendication 2, dans lequel le récipient est conçu comme une barquette de menu à plusieurs compartiments et les compartiments individuels sont séparés les uns des autres par des cloisons de séparation des compartiments, qui convergent dans une région centrale du récipient, caractérisé en ce que l'élément de distribution de gaz (8) est disposé dans la région de convergence des cloisons de séparation des compartiments (11).
  4. Dispositif suivant la revendication 2 ou 3, caractérisé en ce que l'élément de distribution de gaz (8) est conçu comme une surface plane ronde, qui se trouve dans un plan horizontal commun avec le bord (10) du récipient.
  5. Dispositif suivant l'une quelconque des revendications 2 à 4, caractérisé en ce que l'élément de distribution de gaz (8) est conçu en forme de gobelet, le bord du gobelet se trouvant dans un plan horizontal commun avec le bord (10) du récipient.
  6. Dispositif suivant l'une quelconque des revendications 2 à 5, dans lequel une couche superficielle de scellement est appliquée sur le bord du récipient pour fixer la couverture, caractérisé en ce que l'élément de distribution de gaz (8) est délimité dans la direction radiale par une couche superficielle de scellement.
EP93111310A 1992-07-28 1993-07-14 Procédé et dispositif pour emballer des marchandises exemptes d'oxygène Expired - Lifetime EP0581122B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4224919A DE4224919A1 (de) 1992-07-28 1992-07-28 Verfahren und Vorrichtung zum sauerstofffreien Verpacken von Ware
DE4224919 1992-07-28

Publications (3)

Publication Number Publication Date
EP0581122A1 EP0581122A1 (fr) 1994-02-02
EP0581122B1 EP0581122B1 (fr) 1996-03-20
EP0581122B2 true EP0581122B2 (fr) 1998-10-14

Family

ID=6464299

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EP93111310A Expired - Lifetime EP0581122B2 (fr) 1992-07-28 1993-07-14 Procédé et dispositif pour emballer des marchandises exemptes d'oxygène

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EP (1) EP0581122B2 (fr)
DE (2) DE4224919A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1357035A1 (fr) 2002-04-24 2003-10-29 Werner Grabher Procédé et dispositif pour la purge de récipients par gaz protecteur

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3811594A (en) * 1971-11-26 1974-05-21 Jenos Inc Unitary container for a food product
DE2323409C2 (de) * 1973-05-09 1975-01-30 Multivac Sepp Haggenmueller Kg, 8941 Wolfertschwenden Verfahren zum Verpacken von beim Sieden zum Spritzen neigendem Füllgut in Kunststorrverpackungsfolien und Vorrichtung zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
EP0581122B1 (fr) 1996-03-20
DE4224919A1 (de) 1994-02-03
DE59301940D1 (de) 1996-04-25
EP0581122A1 (fr) 1994-02-02

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