EP1167203B1 - Conditioning plant for food products - Google Patents

Conditioning plant for food products Download PDF

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Publication number
EP1167203B1
EP1167203B1 EP00490024A EP00490024A EP1167203B1 EP 1167203 B1 EP1167203 B1 EP 1167203B1 EP 00490024 A EP00490024 A EP 00490024A EP 00490024 A EP00490024 A EP 00490024A EP 1167203 B1 EP1167203 B1 EP 1167203B1
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EP
European Patent Office
Prior art keywords
installation
nitrogen
fact
tunnel
enclosure
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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
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EP00490024A
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German (de)
French (fr)
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EP1167203A1 (en
Inventor
Jean Marie Duhamel
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Individual
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Individual
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Priority to EP00490024A priority Critical patent/EP1167203B1/en
Priority to DE60023471T priority patent/DE60023471D1/en
Priority to AT00490024T priority patent/ATE307760T1/en
Publication of EP1167203A1 publication Critical patent/EP1167203A1/en
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Publication of EP1167203B1 publication Critical patent/EP1167203B1/en
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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
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/02—Packaging agricultural or horticultural products
    • B65B25/04—Packaging fruit or vegetables
    • B65B25/041—Packaging fruit or vegetables combined with their conservation
    • 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
    • B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
    • B65B31/024—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas specially adapted for wrappers or bags

Definitions

  • the invention relates to a product packaging installation such as fresh fruits or vegetables.
  • an airlock is provided at the entrance to the installation. formed of a container containing a liquid in which plunges the bottom of a chain of conveying the vegetables to the devices of the installation.
  • the invention proposes an installation that offers different advantages over known installations.
  • the inert atmosphere consists of nitrogen that avoids and / or slows down especially the phenomena of oxidation and development of bacteria.
  • the installation includes also, upstream of the peeling means 6 such as a peeling machine by friction and / or knives.
  • sorting means can be provided for removing the products non-compliant food and / or food fractionation.
  • this installation has characteristics additional.
  • Nitrogen also contributes to maintaining a low temperature in the so-called pregnant.
  • This routing means 11 may also comprise a means 12 for partially capture the residual nitrogen and introduce it into the enclosure at a point particular, especially in the upper part, since nitrogen is a "heavy" gas, it is better to introduce it at the top for a homogeneous diffusion.
  • a means 13 for displacing nitrogen such as a fan 13, displaces the nitrogen in the tunnel and / or pipes in a predetermined direction.
  • the cooling tunnel functions conventionally against the current.
  • the nitrogen is injected substantially at the outlet of the tunnel and this nitrogen moves to the tunnel entrance where the products are introduced food moving on a conveyor to the exit.
  • the enclosure will be maintained in slight overpressure.
  • Devices for analyzing the nitrogen content of the enclosure are associated with means of security to prevent an individual inadvertently entering the said pregnant.
  • a conveyor belt routes the filled and closed sachets to a zone 30 of storage, such as a cold room.
  • An airlock is used to transfer the products from the enclosure to the cold room.
  • Two flaps 20 are sufficient to establish the airlock and obtain a seal correct speaker.
  • Access to this enclosure is through fast rolling shutter doors allowing if necessary to quickly evacuate the nitrogen contained in the enclosure with using extractor hoods.
  • This speaker can also be accessed using autonomous breathing.
  • the cooling tunnel and the means drips are housed in an aseptic chamber.
  • This sanitized chamber will include close protection with means for filtering the air allowing the creation of laminar flow around the product.
  • Air filtration means are therefore provided.
  • the dewatering means 3 comprise successively a dewatering means 3A followed by at least one vibrating belt 3B.
  • the vibrating belt also has the function of feeding the tunnel of cooling and regulate this power supply.

Abstract

The chain (1) includes washing (2), draining (3A,3B), weighting (4) and packing (5) stations. A tunnel (7) is placed between the draining and weighting stations where the fruits are sprayed with liquid nitrogen. The remaining nitrogen in gaseous state is suck-in the vessel (8) containing the weighting and packing stations. The gas can go through the same tunnel as the fruits or through a second pipe (9).

Description

L'invention se rapporte à une installation de conditionnement de produits alimentaires tels des fruits ou légumes frais.The invention relates to a product packaging installation such as fresh fruits or vegetables.

Elle trouve plus particulièrement mais non exclusivement application pour des de pommes de terre et des champignons.It finds more particularly but not exclusively application for potatoes and mushrooms.

Pour la conservation des légumes frais et notamment des pommes de terre épluchées, il est connu (EP-164285) après épluchage et lavage de les conditionner sous atmosphère inerte, c'est à dire dans un sachet fermé contenant un gaz inerte évitant l'oxydation des légumes et donc une modification de l'aspect desdits légumes.For the conservation of fresh vegetables and especially potatoes peeled, it is known (EP-164285) after peeling and washing the conditioner in an inert atmosphere, ie in a closed bag containing an inert gas avoiding the oxidation of vegetables and therefore a modification of the appearance of the said vegetables.

Il est connu (FR-A-2.591.072) d'effectuer quasiment toutes les opérations de préparation des légumes sous vide ainsi que le conditionnement dans des sachets sous vide.It is known (FR-A-2,591,072) to carry out practically all the operations of preparation of vegetables under vacuum and packaging in sachets under vacuum.

Une telle installation est malheureusement difficile à mettre en oeuvre et coûteuse car la réalisation du vide nécessite des investissement très lourds.Such an installation is unfortunately difficult to implement and expensive because the realization of the vacuum requires very heavy investment.

Plutôt que de faire le vide, il est connu de placer les divers matériels de l'installation de préparation et conditionnement dans un caisson sous atmosphère inerte.Rather than emptying, it is known to place the various materials of the preparation and conditioning installation in a box under an atmosphere inert.

Pour réaliser cette installation, il est prévu à l'entrée de l'installation, un sas formé d'un bac contenant un liquide dans lequel plonge le bas d'une chaíne de convoyage entraínant les légumes vers les dispositifs de l'installation.To carry out this installation, an airlock is provided at the entrance to the installation. formed of a container containing a liquid in which plunges the bottom of a chain of conveying the vegetables to the devices of the installation.

L'invention propose une installation qui offre différents avantages par rapport aux installations connus. The invention proposes an installation that offers different advantages over known installations.

On connaít également le document US-5.075.104 relatif à un dispositif de traitement de produits non fluides sous atmosphère inerte et température contrôlée.Document US Pat. No. 5,075,104 is also known relating to a device for treatment of non-fluid products under inert atmosphere and controlled temperature.

Toutefois, dans ce document, les éléments du dispositif décrits ne permettent pas l'acheminement contrôlé des produits.However, in this document, the elements of the device described allow only not the controlled routing of products.

On connaít également le document US-5.896.727 relatif à un procédé et un dispositif d'élimination d'oxygène de l'espace de tête d'un emballage rempli aseptiquement.Document US Pat. No. 5,896,727 is also known relating to a method and a oxygen removal device of the head space of a filled package aseptically.

Toutefois, dans ce document, il n'est pas décrit des moyens de traitement par refroidissement des produits. However, in this document, it is not described means of treatment by cooling of products.

A cet effet, l'invention se rapporte à une installation de conditionnement de légumes ou fruits frais et notamment de pommes de terre dans des sachets sous atmosphère inerte comprenant :

  • au moins un dispositif de lavage,
  • au moins un dispositif d'égouttage,
  • au moins un dispositif de pesage et
  • au moins un dispositif d'ensachage,
cette installation étant caractérisé en ce que :
  • entre le dispositif d'égouttage et le dispositif de pesage, est prévu un tunnel de refroidissement des légumes ou fruits par injection d'azote liquide,
  • le dispositif de pesage et le dispositif d'ensachage sont logés dans une enceinte sous atmosphère d'azote et
  • le tunnel de refroidissement et l'enceinte précitée sont reliés par des moyens d'acheminement contrôlés vers l'enceinte de l'azote à l'état gazeux récupéré au niveau du tunnel de refroidissement.
For this purpose, the invention relates to a packaging plant for vegetables or fresh fruits and in particular potatoes in bags in an inert atmosphere comprising:
  • at least one washing device,
  • at least one dewatering device,
  • at least one weighing device and
  • at least one bagging device,
this installation being characterized in that:
  • between the dewatering device and the weighing device, there is provided a tunnel for cooling vegetables or fruits by injecting liquid nitrogen,
  • the weighing device and the bagging device are housed in a chamber under a nitrogen atmosphere and
  • the cooling tunnel and the aforementioned enclosure are connected by controlled conveyance means to the nitrogen chamber in the gaseous state recovered at the cooling tunnel.

L'invention sera bien comprise à l'aide de la description ci-après faite à titre d'exemple non limitatif en regard du dessin ci-annexé qui représente schématiquement :

  • figure 1 : une installation selon l'invention,
  • figure 2 : un détail de l'installation.
The invention will be better understood using the following description given by way of non-limiting example with reference to the attached drawing which schematically shows:
  • FIG. 1: an installation according to the invention,
  • Figure 2: a detail of the installation.

En se reportant au dessin, on voit une installation 1 de conditionnement de légumes ou fruits frais et notamment de pommes de terre dans des sachets sous atmosphère inerte.Referring to the drawing, we see a plant 1 of conditioning of vegetables or fresh fruits and especially potatoes in sachets inert atmosphere.

L'atmosphère inerte est constitué par de l'azote qui évite et/ou ralentit notamment les phénomènes d'oxydation et de développement des bactéries.The inert atmosphere consists of nitrogen that avoids and / or slows down especially the phenomena of oxidation and development of bacteria.

Cette installation comprend :

  • au moins un dispositif 2 de lavage,
  • au moins un dispositif 3 d'égouttage,
  • au moins un dispositif 4 de pesage et
  • au moins un dispositif 5 d'ensachage.
This installation includes:
  • at least one washing device 2,
  • at least one dewatering device 3,
  • at least one weighing device 4 and
  • at least one bagging device.

Pour certains légumes tels les pommes de terre, l'installation comprend également, en amont des moyens 6 d'épluchage tels une machine d'épluchage par frottement et/ou par couteaux. For some vegetables such as potatoes, the installation includes also, upstream of the peeling means 6 such as a peeling machine by friction and / or knives.

Egalement, peuvent être prévus des moyens de triage pour retirer les produits alimentaires non conforme et/ou de fractionnement des produits alimentaires.Also, sorting means can be provided for removing the products non-compliant food and / or food fractionation.

Selon l'invention, cette installation présente des caractéristiques supplémentaires.According to the invention, this installation has characteristics additional.

A cet effet :

  • entre le dispositif 3 d'égouttage et le dispositif 4 de pesage, est prévu un tunnel 7 de refroidissement des légumes ou fruits par injection d'azote liquide,
  • le dispositif 4 de pesage et le dispositif 5 d'ensachage sont logés dans une enceinte 8 sous atmosphère d'azote et
  • le tunnel 7 de refroidissement et l'enceinte 8 précitée sont reliés par des moyens 9 d'acheminement contrôlés vers l'enceinte de l'azote à l'état gazeux récupéré au niveau du tunnel de refroidissement.
For this purpose:
  • between the dewatering device 3 and the weighing device 4, there is provided a tunnel 7 for cooling the vegetables or fruits by injecting liquid nitrogen,
  • the weighing device 4 and the bagging device 5 are housed in a chamber 8 under a nitrogen atmosphere and
  • the cooling tunnel 7 and the aforementioned enclosure 8 are connected by means of controlled routing 9 to the enclosure of the nitrogen in the gaseous state recovered at the cooling tunnel.

Ainsi l'azote introduit dans le tunnel pour en refroidir les légumes est récupéré pour participer aux conditions requises de température et d'atmosphère dans l'enceinte 8 où s'achève le processus de conditionnement avec, éventuellement, apport d'azote.So the nitrogen introduced into the tunnel to cool the vegetables is recovered to participate in the required conditions of temperature and atmosphere in the enclosure 8 where the packaging process ends with, possibly, nitrogen supply.

L'azote participe également au maintien d'une température basse dans la dite enceinte.Nitrogen also contributes to maintaining a low temperature in the so-called pregnant.

Pour obtenir cette régulation :

  • d'une part, la conduite 7A d'évacuation habituelle de l'azote du tunnel de refroidissement vers l'extérieur est, cette fois-ci, raccordée à l'enceinte par une conduite 10 dite d'admission et,
  • d'autre part, la sortie 7B du tunnel de refroidissement est reliée, à l'enceinte par un moyen d'acheminement 11 hermétique des produits alimentaires.
To obtain this regulation:
  • on the one hand, the pipe 7A for the usual evacuation of the nitrogen from the cooling tunnel to the outside is, this time, connected to the chamber by a so-called admission duct 10 and,
  • on the other hand, the outlet 7B of the cooling tunnel is connected to the enclosure by a means for conveying 11 hermetic food products.

Il peut s'agir, pour ce moyen d'acheminement, d'un ou plusieurs convoyeurs logé dans un caisson.It may be, for this conveyance means, one or more conveyors housed in a box.

Ce moyen 11 d'acheminement peut comprendre également un moyen 12 pour capter partiellement l'azote résiduaire et l'introduire dans l'enceinte en un point particulier et notamment en partie haute car l'azote étant un gaz « lourd », il est préférable de l'introduire en partie haute pour une diffusion homogène.This routing means 11 may also comprise a means 12 for partially capture the residual nitrogen and introduce it into the enclosure at a point particular, especially in the upper part, since nitrogen is a "heavy" gas, it is better to introduce it at the top for a homogeneous diffusion.

Egalement, on contrôle mieux la diffusion de cet azote.Also, the diffusion of this nitrogen is better controlled.

Un moyen 13 de déplacement de l'azote, tel un ventilateur 13, déplace l'azote dans le tunnel et/ou conduites suivant un sens prédéterminé. A means 13 for displacing nitrogen, such as a fan 13, displaces the nitrogen in the tunnel and / or pipes in a predetermined direction.

Donc, à l'aide de volets 14 contrôlant la section de passage des conduites et de ventilateurs 13, on parvient à contrôler correctement les conditions dans l'enceinte.So, using flaps 14 controlling the passage section of the pipes and of fans 13, it is possible to correctly control the conditions in the enclosure.

Le tunnel de refroidissement fonctionne classiquement à contre courant.The cooling tunnel functions conventionally against the current.

Plus précisément, l'azote est injecté sensiblement au niveau de la sortie du tunnel et cet azote se déplace vers l'entrée du tunnel où sont introduits les produits alimentaires qui se déplacent sur un convoyeur vers la sortie.More specifically, the nitrogen is injected substantially at the outlet of the tunnel and this nitrogen moves to the tunnel entrance where the products are introduced food moving on a conveyor to the exit.

C'est donc au niveau de cet entrée du tunnel que l'azote gazeux est extrait.It is therefore at this tunnel entrance that the nitrogen gas is extracted.

Entre-temps, il a cédé des frigories aux produits alimentaires à refroidir.In the meantime, he gave away cold food to cool.

Selon ce mode de déplacement à contre-courant, les produits alimentaires sont refroidis progressivement.According to this mode of displacement against the current, food products are gradually cooled.

L'enceinte sera maintenue en légère surpression.The enclosure will be maintained in slight overpressure.

Des dispositifs d'analyse de la teneur en azote de l'enceinte sont associés à des moyens de sécurité pour éviter qu'un individu s'introduise par mégarde dans la dite enceinte.Devices for analyzing the nitrogen content of the enclosure are associated with means of security to prevent an individual inadvertently entering the said pregnant.

Un tapis roulant achemine les sachets remplis et fermés vers une zone 30 de stockage, telle une chambre froide.A conveyor belt routes the filled and closed sachets to a zone 30 of storage, such as a cold room.

On fait appel à un sas pour transférer les produits de l'enceinte vers la chambre froide.An airlock is used to transfer the products from the enclosure to the cold room.

Deux bavettes 20 sont suffisantes pour établir le sas et obtenir une étanchéité correcte de l'enceinte.Two flaps 20 are sufficient to establish the airlock and obtain a seal correct speaker.

L'accès à cette enceinte se fait grâce à des portes à volet roulant rapide permettant si nécessaire d'évacuer rapidement l'azote contenu dans l'enceinte avec l'aide des hottes d'extraction.Access to this enclosure is through fast rolling shutter doors allowing if necessary to quickly evacuate the nitrogen contained in the enclosure with using extractor hoods.

On peut également accéder à cette enceinte à l'aide de système de respiration autonome.This speaker can also be accessed using autonomous breathing.

Avantageusement, le tunnel de refroidissement ainsi que les moyens d'égouttage sont logés dans une chambre 15 aseptisée.Advantageously, the cooling tunnel and the means drips are housed in an aseptic chamber.

Cette chambre 15 aseptisée comprendra une protection rapprochée avec des moyens de filtration de l'air permettant la création de flux laminaire autour du produit.This sanitized chamber will include close protection with means for filtering the air allowing the creation of laminar flow around the product.

Des moyens de filtrations de l'air sont donc prévus.Air filtration means are therefore provided.

Avantageusement, les moyens 3 d'égouttage comprennent successivement un moyen 3A d'essorage suivi d'au moins un tapis vibreur 3B. Advantageously, the dewatering means 3 comprise successively a dewatering means 3A followed by at least one vibrating belt 3B.

Le tapis vibreur a également pour fonction d'alimenter le tunnel de refroidissement et de réguler cette alimentation.The vibrating belt also has the function of feeding the tunnel of cooling and regulate this power supply.

L'essorage améliore le séchage des produits alimentaires.Spinning improves the drying of food products.

Ainsi, il ne se forme pas de glaçons sur les produits alimentaires introduits dans les sachets.Thus, it does not form ice cubes on introduced food products in the bags.

Lorsqu'un épluchage est nécessaire, il est réalisé en dehors de la chambre aseptisée.When peeling is necessary, it is made outside the room sanitized.

La conservation des légumes se fera alors sans bisulphite, sans conservateur et simplement sous atmosphère inerte et au froid, par exemple trois ou quatre degrés.The conservation of vegetables will then be without bisulphite, without preservatives and simply under inert and cold atmosphere, for example three or four degrees.

Claims (9)

  1. Installation for the packaging of food products such as fresh fruit or vegetables and which includes:
    at least one washing device (2),
    at least one drainage device (3),
    at least one weighing device (4) and
    at least one bagging device (5),
    with this installation being CHARACTERISED by the fact that:
    between the drainage device (3) and the weighing device (4), there is included a tunnel (7) for chilling the vegetables or fruits through the introduction of liquid nitrogen,
    the weighing device (4) and the bagging device (5) are located in an enclosure (8) which contains an atmosphere of nitrogen and
    a chilling tunnel (7) is connected to the enclosure (8) where the packaging is carried out by a controlled method (9) for transporting the gaseous nitrogen recovered in the chilling tunnel.
  2. Installation as described in claim 1 characterised by the fact that:
    on one hand the usual conduit (7A) for evacuation of the nitrogen from the chilling tunnel towards the exterior is connected to the enclosure through a conduit (10) known as the admission conduit and,
    on the other hand, the outlet (7B) from the chilling tunnel is connected to the enclosure by means of a hermetically sealed device (11) for transporting the food products.
  3. Installation as described in claim 2, characterised by the fact that the method (11) for transporting the nitrogen also includes a means (12) of partly trapping the residual nitrogen and introducing it into the enclosure at a specific point.
  4. Installation as described in claim 1 characterised by the fact that the method (13) for moving the nitrogen moves the nitrogen in the tunnel and/or conduits in a predetermined direction.
  5. Installation as described in claim 1 characterised by the fact that the enclosure is kept slightly pressurised.
  6. Installation as described claim 1, characterised by the fact that the chilling tunnel and means of drainage are located in an aseptic chamber (15).
  7. Installation as described in claim 1 characterised by the fact that the means of drainage (3) are successively made up of a device (3A) followed by at least one vibrating belt (3B).
  8. Installation as described in claim 4, characterised by the fact that it includes shutters (14) which control the flow cross-section of the conduits.
  9. Installation as described in claim 1, characterised by the fact that the devices for analysing the nitrogen levels in the enclosure are linked to safety devices.
EP00490024A 2000-06-20 2000-06-20 Conditioning plant for food products Expired - Lifetime EP1167203B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP00490024A EP1167203B1 (en) 2000-06-20 2000-06-20 Conditioning plant for food products
DE60023471T DE60023471D1 (en) 2000-06-20 2000-06-20 Conditioning plant for foodstuffs
AT00490024T ATE307760T1 (en) 2000-06-20 2000-06-20 FOOD CONDITIONING PLANT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00490024A EP1167203B1 (en) 2000-06-20 2000-06-20 Conditioning plant for food products

Publications (2)

Publication Number Publication Date
EP1167203A1 EP1167203A1 (en) 2002-01-02
EP1167203B1 true EP1167203B1 (en) 2005-10-26

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Application Number Title Priority Date Filing Date
EP00490024A Expired - Lifetime EP1167203B1 (en) 2000-06-20 2000-06-20 Conditioning plant for food products

Country Status (3)

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EP (1) EP1167203B1 (en)
AT (1) ATE307760T1 (en)
DE (1) DE60023471D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11787586B2 (en) * 2018-04-10 2023-10-17 Gea Food Solutions Germany Gmbh Housed line for processing and packaging food

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1600180B (en) * 2004-10-26 2010-09-01 广西壮族自治区水果生产技术指导总站 Fixed type equipment of commercial treatment for picked bananas
CN1600181B (en) * 2004-10-26 2010-11-03 广西壮族自治区水果生产技术指导总站 Mobile type equipment of commercial treatment for picked bananas

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989004277A1 (en) * 1987-10-30 1989-05-18 Olivier Desjonqueres Device for processing products under controlled atmosphere and temperature, in particular foodstuffs
US4866950A (en) * 1988-04-13 1989-09-19 Air Products And Chemicals, Inc. Method and apparatus for cooling fruit to a select temperature
ATE178547T1 (en) * 1994-12-06 1999-04-15 Nestle Sa METHOD AND APPARATUS FOR REMOVING OXYGEN FROM THE HEADSPACE OF A CONTAINER

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11787586B2 (en) * 2018-04-10 2023-10-17 Gea Food Solutions Germany Gmbh Housed line for processing and packaging food

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EP1167203A1 (en) 2002-01-02
ATE307760T1 (en) 2005-11-15
DE60023471D1 (en) 2005-12-01

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