FR2623471A1 - Method for setting the inside of flexible bags under a controlled atmosphere and means for implementing this method - Google Patents

Method for setting the inside of flexible bags under a controlled atmosphere and means for implementing this method Download PDF

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Publication number
FR2623471A1
FR2623471A1 FR8716442A FR8716442A FR2623471A1 FR 2623471 A1 FR2623471 A1 FR 2623471A1 FR 8716442 A FR8716442 A FR 8716442A FR 8716442 A FR8716442 A FR 8716442A FR 2623471 A1 FR2623471 A1 FR 2623471A1
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Prior art keywords
pocket
fluid
box
injection
useful volume
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FR8716442A
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French (fr)
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FR2623471B1 (en
Inventor
Jacques Gourlet
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BERNHARDT SA
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BERNHARDT SA
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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or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/06—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or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzle being arranged for insertion into, and withdrawal from, the mouth of a filled container and operating in conjunction with means for sealing the container mouth
    • 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

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

Abstract

The invention relates to a method for setting the inside of flexible bags, previously filled with product in an uncontrolled atmosphere such as atmospheric air, under a controlled atmosphere. It is characterised in that the useful volume 12 of the bag 1, that is to say at least the internal volume receiving the contents, is isolated from the casing 4, then there is injected, separately but substantially at the same time, on the one hand, into the useful volume 12 of the bag, a substitution fluid 3 and, on the other hand, into the casing 4, a gaseous fluid 5, termed the filling fluid, which has a different nature from that of the substitution fluid 3, and finally, by retaining the isolation of the useful volume 12 of the bag 1 from that 40 of the casing 4, the entry of the bag is sealed. Any time after this, the casing 4 is opened conventionally in order to release the bag 1. Application to the packaging industry.

Description

L'invention se rapporte à un procédé de placement sous atmosphère controlée de l'intérieur de poches souples préalablement remplies de produits en atmosphère libre telle l'air atmosphérique. The invention relates to a method of placing under a controlled atmosphere the interior of flexible bags previously filled with products in a free atmosphere such as atmospheric air.

L'invention se rapporte egalement aux moyens pour la mise en oeuvre de ce procédé. The invention also relates to the means for implementing this method.

Le conditionnement de produits, dans une poche souple, par exemple à l'aide des moyens decrits au brevet FR-A-2.365.484, requiert généralement à l'issue du remplissage de cette poche une operation de substitution d'un fluide gazeux à l'air contenu au dessus et éventuellement sous la surface libre du contenu puis une operation de scellement étanche de l'ouverture de la poche. The packaging of products, in a flexible bag, for example using the means described in patent FR-A-2,365,484, generally requires, after filling this bag, an operation of substitution of a gaseous fluid for the air contained above and possibly under the free surface of the content, then a sealed sealing operation of the opening of the pocket.

Le procédé de l'invention intéresse plus particulièrement la substitution d'un fluide gazeux prédéterminé tel l'azote à celui contenu dans la poche et/ou les produits qui ont été ensaches sans précaution particulière à l'air libre. The process of the invention relates more particularly to the substitution of a predetermined gaseous fluid such as nitrogen for that contained in the bag and / or the products which have been bagged without particular precautions in the open air.

Notamment mais non exclusivement l'invention s'applique au conditionnement de produits dont la conservation exige qu'il subsiste le oins possible d'oxygène dans la poche. In particular but not exclusively, the invention applies to the packaging of products whose conservation requires that as much oxygen as possible remains in the bag.

En fait la substitution d'un fluide gazeux à celui à éliminer requiert deux opérations dont effectivement une extraction du fluide initialement contenu dans la poche c'est à dire autour et/ou à la surface du produit et une introduction de fluide de substitution dans l'enveloppe. In fact the substitution of a gaseous fluid for that to be eliminated requires two operations including effectively an extraction of the fluid initially contained in the pocket, that is to say around and / or at the surface of the product and an introduction of substitution fluid into the 'envelope.

Un procédé qui permet d'obtenir un vide très poussé dans la poche consiste à la placer en position ouverte à l'issue de son remplissage dans une enceinte obturable de maniere etanche elle un caisson puis à dépressuriser ce caisson jusqu'au niveau voulu de vide, avant d'y injecter le fluide de substitution puis de sceller hermétiquement l'ouverture de la poche. A process which makes it possible to obtain a very high vacuum in the bag consists in placing it in the open position after filling it in a chamber which can be sealed in a sealed manner, then a box then depressurizing this box to the desired level of vacuum. , before injecting the substitution fluid into it and then hermetically sealing the opening of the bag.

Bien entendu, à l'issue de sa fermeture le caisson est ouvert et la poche souple est extraite.-
Cette ouverture du caisson libère une certaine quantité de fluide de substitution ce- qui, outre la pollution qu'il engendre, induit donc une consommation excessive de fluide de substitution qui est généralement assez onéreux. Of course, at the end of its closing, the box is opened and the flexible pocket is extracted.
This opening of the box releases a certain amount of substitution fluid which, in addition to the pollution it generates, therefore induces an excessive consumption of substitution fluid which is generally quite expensive.

Pour remédier à ces inconvénients, il est connu (FR-A-2.597.833) de limiter le volume du caisson à celui strictement nécessaire au logement de la poche et du dispositif de scelleinent mais cela a pour corollaire de limiter également les possibilités d'utilisation du dit caisson. To overcome these drawbacks, it is known (FR-A-2,597,833) to limit the volume of the box to that which is strictly necessary for housing the pocket and the sealing device, but this has the corollary of also limiting the possibilities of use of said box.

Plutôt que d'enfermer la poche et son contenu dans un caisson étanche, il est connu de relier à l'aide d'une canule l'intérieur de la poche à un dispositif qui permet, d'une part, d'en extraire le fluide initialement présent tel l'air, puis, d'autre part, d'y introduire un fluide de substitution avant de retirer la canule et d'aussitôt sceller hermétiquement l'ouverture correspondante de la poche. Rather than enclosing the bag and its contents in a sealed box, it is known to connect the interior of the bag using a cannula to a device which allows, on the one hand, to extract the fluid initially present such as air, then, on the other hand, to introduce a substitution fluid therein before withdrawing the cannula and immediately hermetically sealing the corresponding opening of the pocket.

Le volume de fluide de substitution utilise lors d'un cycle et donc strictement limité à celui introduit dans la poche. The volume of substitution fluid used during a cycle and therefore strictly limited to that introduced into the pocket.

Ce procédé donne de bons résultats. lorsque le niveau de vide recherché à l'intérieur de la poche n'est pas trop bas sinon la poche extérieurement contrainte par la pression atmosphérique se déforme de maniere incontrolable et forme souvent des plis qui, d'une part, retiennent des micro-volumes d'air et d'autre part, au niveau de son scellement, engendrent des défauts d'étanchéité. This process gives good results. when the vacuum level sought inside the pocket is not too low otherwise the pocket externally constrained by atmospheric pressure deforms uncontrollably and often forms folds which, on the one hand, retain micro-volumes air and on the other hand, at its sealing, generate leaks.

Un résultat que l'invention vise à obtenir est un procédé du type précité qui permette de remédier à la pollution par le fluide de substitution et à son gaspillage. A result which the invention aims to obtain is a process of the aforementioned type which makes it possible to remedy the pollution by the substitution fluid and its waste.

h cet effet, l'invention a pour objet un tel procéde notamment caractérisé en ce qu'on isole du caisson le volume utile de la poche c'est à dire au moins le volume interne recevant le contenu puis on injecte distinctement mais sensiblement en meme temps, d'une part, dans le volume utile de la poche un fluide de substitution et, d'autre part, dans le caisson, un fluide gazeux dit de remplissage et de nature differente de celui de substitution et enfin en préservant l'isolement du volume utile de la poche, de celui du caisson on scelle l'entrée de la poche après quoi à un moment quelconque on ouvre classiquement le caisson pour liberer la poche.  h for this purpose, the subject of the invention is such a method, in particular characterized in that the useful volume of the bag is isolated from the box, that is to say at least the internal volume receiving the content, then the injection is distinctly but substantially the same. time, on the one hand, in the useful volume of the pocket a substitution fluid and, on the other hand, in the box, a gaseous fluid said to be filling and of a different nature from that of substitution and finally while preserving the isolation of the useful volume of the pocket, of that of the box, the inlet of the pocket is sealed after which at any time the box is conventionally opened to release the pocket.

L'invention sera bien comprise à l'aide de la description ci-apres faite à titre d'exemple non limitatif en regard du dessin ci-annexé qui représente schematiquement un dispositif fonctionnant selon le procédé de l'invention. The invention will be better understood with the aid of the description below given by way of nonlimiting example with regard to the appended drawing which schematically represents a device operating according to the method of the invention.

En se reportant au dessin, on voit une poche souple 1 tel un sac dont le contenu 2 doit pour sa conservation être placé sous atmosphère particulière c'est à dire dans un fluide gazeux 3 en substitution à celui tel l'air qui environne généralement ce contenu et notamment au moins sa surface libre. Referring to the drawing, we see a flexible pocket 1 such as a bag, the contents of which 2 must, for its preservation, be placed under a particular atmosphere, ie in a gaseous fluid 3 in substitution for that such as the air which generally surrounds this. content and in particular at least its free surface.

Bien entendu, les parois 11 de la poche 1 sont en matériau imperméable au fluide gazeux que l'on veut maintenir au contact du contenu 2. Of course, the walls 11 of the pocket 1 are made of material impermeable to the gaseous fluid which it is desired to maintain in contact with the content 2.

Pour substituer un fluide prédéterminé 3 à celui initialement contenu dans la poche 1, à un moment quelconque après son remplissage, on place la poche souple 1 en position au moins partiellement ouverte dans un caisson 4 et ce en la disposant de manière appropriée notamment pour la préserver d'un renversement que l'on ferme étanchement puis on extrait l'air du dit caisson et donc le fluide initialement contenu dans la poche souple. To substitute a predetermined fluid 3 for that initially contained in the bag 1, at any time after filling, the flexible bag 1 is placed in the at least partially open position in a box 4 and this is arranged in an appropriate manner in particular for the preserve from a reversal that is closed tightly and then the air is extracted from said box and therefore the fluid initially contained in the flexible bag.

Ensuite, au lieu de remplir le caisson 4 avec le fluide de substitution 3, de manière originale, on isole du caisson 4 le volume utile 12 de la poche 1 c'est à dire au moins le volume interne recevant le contenu puis on injecte distinctement mais sensiblement en même temps, d'une part, dans le volume utile 12 de la poche le fluide de substitution 3 et, d'autre part dans le caisson 4, un fluide gazeux 5 dit de remplissage, de nature différente de celui de substitution 3, et enfin, en préservant l'isolement du volume utile 12 de la poche 1, on scelle l'entrée de la poche après quoi à un moment quelconque on ouvre le caisson 4 pour libérer la poche 1. Then, instead of filling the box 4 with the substitution fluid 3, in an original manner, the useful volume 12 of the bag 1 is isolated from the box 4, that is to say at least the internal volume receiving the content, then we inject distinctly but substantially at the same time, on the one hand, in the useful volume 12 of the pocket, the substitution fluid 3 and, on the other hand, in the box 4, a gaseous fluid 5 called filling, of a different nature from that of substitution 3, and finally, while preserving the isolation of the useful volume 12 of the pocket 1, the inlet of the pocket is sealed after which at any time the box 4 is opened to release the pocket 1.

Suivant l'invention, pendant l'injection de fluide de substitution 3 dans la poche souple 1, on injecte de l'air dans le volume 40 du caisson 4 en tant que fluide de remplissage 5. According to the invention, during the injection of substitution fluid 3 into the flexible bag 1, air is injected into the volume 40 of the box 4 as filling fluid 5.

Bien entendu, pour pouvoir injecter des fluides distincts 3, 5 dans les volumes considéres 40, 12 préalablement à l'injection, on relie distinctement le volume 40 interne du caisson 4 et le volume 12 utile de la poche à des sources 6, 7 de fluides diffêrents.  Of course, in order to be able to inject separate fluids 3, 5 into the volumes considered 40, 12 prior to injection, the internal volume 40 of the box 4 and the useful volume 12 of the bag are distinctly connected to sources 6, 7 of different fluids.

Conformément à l'invention, pour l'injection des fluides 3, 5 dans le caisson 4 et dans la poche 1 on ajuste le débit d'injection de chaque fluide de manière, lors de l'injection des fluides, à engendrer d'emblée des variations de pression sensiblement identiques dans le caisson et dans la poche c'est à dire sans faire intervenir la déformabilité de la poche souple pour créer un relatif équilibre entre les pressions des fluides gazeux situés de part et d'autre de sa paroi souple. In accordance with the invention, for the injection of fluids 3, 5 into the box 4 and into the pocket 1, the injection rate of each fluid is adjusted so that, during the injection of the fluids, it is immediately generated substantially identical pressure variations in the box and in the pocket, that is to say without involving the deformability of the flexible pocket to create a relative balance between the pressures of the gaseous fluids located on either side of its flexible wall.

En fonction des débits d'injection de fluide de remplissage 5 et de fluide de substitution 3, on ajuste au moins la durée d'injection du fluide de substitution 3 de manière à introduire une masse prédéterminée de fluide de substitution dans le volume utile 12 de la poche. Depending on the injection fluid 5 and substitution fluid 3 injection flow rates, the injection duration of the substitution fluid 3 is adjusted at least so as to introduce a predetermined mass of substitution fluid into the useful volume 12 of the pocket.

Ainsi compte tenu de l'incompressibilité du contenu 3 de la poche et/ou de la souplesse de la dite poche, on peut en fonction de la masse de fluide gazeux introduit dans le volume utile de la poche ajuster la souplesse qu'aura l'ensemble "poche-contenu" sous la pression atmosphérique normale. Thus, taking into account the incompressibility of the contents 3 of the pocket and / or the flexibility of said pocket, it is possible, depending on the mass of gaseous fluid introduced into the useful volume of the pocket, to adjust the flexibility that the "pocket-contents" set under normal atmospheric pressure.

L'invention se rapporte également aux moyens pour la mise en oeuvre de l'invention lesquels moyens comprennent au moi-ns
- un moyen 8 en vue d'isoler le volume utile 12 de la poche de celui 40 du caisson,
- deux moyens distincts 9, 10 chacun de raccordement des vol unes 12, 40 précités à une source 6, 7 de chacun des fluides 3, 5,
- deux moyens distincts 13, 14 d'ajustement du débit des fluides 3, 5 issus des sources distinctes 6, 7,
- un moyen 15 d'ajustement de la durée d'injection au moins du fluide de substitution.The invention also relates to the means for implementing the invention, which means comprise in the meantime
a means 8 for isolating the useful volume 12 of the pocket from that 40 of the box,
- two separate means 9, 10 each for connecting the aforesaid flights 12, 40 to a source 6, 7 of each of the fluids 3, 5,
two separate means 13, 14 for adjusting the flow rate of the fluids 3, 5 coming from the separate sources 6, 7,
a means 15 for adjusting the duration of injection of at least the substitution fluid.

Le lecteur comprend aisément que tel que cela a été évoqué l'invention permet bien d'obtenir les resultats escomptes notamment l'économie de fluide de substitution puisqu'à l'ouverture du caisson c'est le fluide de remplissage 5 qui s'échappe. The reader easily understands that, as has been mentioned, the invention does indeed make it possible to obtain the expected results, in particular the saving in substitution fluid since, when the box is opened, the filling fluid 5 escapes. .

Evidemment le caisson comprend un dispositif de scellement 16. Obviously the box comprises a sealing device 16.

Le moyen 8 en vue d'isoler le volume utile 12 de la poche de celui 40 du caisson consiste par exemple en une pince élastique linéaire.  The means 8 for isolating the useful volume 12 of the pocket from that 40 of the box consists for example of a linear elastic clamp.

Les moyens distincts de raccordement 9, 10 consistent par exemple en des conduites 9, 10 placées sous l'influence d'organes de contrôle 90, 100 du passage du fluide. The separate connection means 9, 10 consist for example of pipes 9, 10 placed under the influence of control members 90, 100 of the passage of the fluid.

Les moyens 13, 14 d'ajustement du débit consistent en des regulateurs de débit chacun interposé sur une des conduites 9, 10.  The means 13, 14 for adjusting the flow consist of flow regulators each interposed on one of the lines 9, 10.

Le moyen précité d'ajustement 15 de la duree d'injection consiste par exemple un organe de temporisation de la commande de l'organe de contrôle 90 du passage du fluide de substitution dans la conduite 9. The aforementioned means 15 for adjusting the injection duration consists, for example, of a member for delaying the control of the control member 90 for the passage of the substitution fluid in line 9.

La source 7 de fluide 5 de remplacement peut avantageusement etre l'atmosphère.  The source 7 of replacement fluid 5 may advantageously be the atmosphere.

Claims (6)

REVENDICATIONS 1. Procédé de placement sous atmosphère contrôlée de l'intérieur de poches (1) préalablement remplies de produits (2) en atmosphère libre telle l'air atmosphérique, lequel procédé permet de substituer un fluide gazeux (3) prédéterminé au fluide tel l'air en partie contenu dans la poche souple (1) avant de la sceller de manière etanche et comprend à cet effet au moins une étape selon laquelle à un moment quelconque après son remplissage, on enferme la poche souple (1) avec son contenu (2) dans une enceinte (4) étanchement obturable telle un caisson, et ce en la disposant de manière appropriée notamment pour la préserver d'un renversement et en tout cas en position au moins partiellement ouverte afin que le fluide à remplacer puisse en etre extrait lors de la dépressurisation du caisson, le dit remplacement ayant bien entendu lieu avant qu'on scelle étanchement le volume utile de la poche, 1. Method for placing under a controlled atmosphere the inside of bags (1) previously filled with products (2) in a free atmosphere such as atmospheric air, which method makes it possible to substitute a predetermined gaseous fluid (3) for the fluid such as air partly contained in the flexible bag (1) before sealing it in a sealed manner and for this purpose comprises at least one step according to which at any time after filling, the flexible bag (1) is enclosed with its contents (2 ) in a sealable enclosure (4) such as a box, and this is arranged in an appropriate manner in particular to protect it from overturning and in any case in an at least partially open position so that the fluid to be replaced can be extracted therefrom depressurization of the box, said replacement obviously taking place before the useful volume of the pocket is sealed, ce procédé étant CARACTERISE en ce qu'on isole du caisson (4) le volume utile (12) de la poche (1) c'est à dire au moins le volume interne recevant le contenu puis on injecte distinctement mais sensiblement en meme temps, d'une part, dans le volume utile (12) de la poche un fluide de substitution (3) et, d'autre part, dans le caisson (4), un fluide gazeux (5) dit de remplissage et de nature différente de celui de substitution (3) et enfin en préservant l'isolement du volume utile (12) de la poche (1), de celui (40) du caisson (4) on scelle l'entrée de la poche aprés quoi à un moment quelconque on ouvre classiquement le caisson (4) pour libérer la poche (1). this process being CHARACTERIZED in that the useful volume (12) of the pocket (1) is isolated from the box (4), that is to say at least the internal volume receiving the content, then it is injected distinctly but substantially at the same time, on the one hand, in the useful volume (12) of the pocket, a substitution fluid (3) and, on the other hand, in the box (4), a gaseous fluid (5) said to be filling and of a different nature from that of substitution (3) and finally while preserving the isolation of the useful volume (12) of the pocket (1), of that (40) of the box (4), the inlet of the pocket is sealed after which at any time the box (4) is conventionally opened to release the pocket (1). 2. Procédé selon la revendication 1 caractérisé en ce que pour l'injection des fluides distincts (3, 5) dans les volumes considérés (40, 12) préalablement à la dite injection, on relie distinctement le volume interne (40) du caisson (4) et le volume (12) utile de la poche à des sources (6, 7) de fluides différents. 2. Method according to claim 1 characterized in that for the injection of separate fluids (3, 5) into the volumes considered (40, 12) prior to said injection, the internal volume (40) of the box is distinctly connected ( 4) and the useful volume (12) of the pocket at sources (6, 7) of different fluids. 3. Procédé selon la revendication 1 ou 2 caractérisé en ce qu'en fonction des débits d'injection de fluide de remplissage (5) et de fluide de substitution (3), on ajuste au moins la durée d'injection du fluide de substitution (3) de maniere à introduire une masse prédéterminée de fluide de substitution dans le volume utile (12) de la poche.  3. Method according to claim 1 or 2 characterized in that as a function of the injection fluid filling (5) and substitution fluid (3) flow rates, the injection duration of the substitution fluid is adjusted at least (3) so as to introduce a predetermined mass of substitution fluid into the useful volume (12) of the pocket. 4. Procédé selon l'une quelconque des revendications 1 à 3 caractérisé en ce que, pour l'injection des fluides (3, 5) dans le caisson (4) et dans la poche (1) on ajuste le débit d'injection de chaque fluide de manière, lors de l'injection des fluides, à engendrer d'emblée des variations de pression sensiblement identiques dans le caisson et dans la poche c'est à dire sans faire intervenir la déformabilité de la poche souple pour créer un relatif équilibre entre les pressions des fluides gazeux situés de part et d'autre de sa paroi souple. 4. Method according to any one of claims 1 to 3 characterized in that, for the injection of fluids (3, 5) in the box (4) and in the pocket (1) the injection rate of each fluid so as, during the injection of the fluids, to immediately generate substantially identical pressure variations in the box and in the pocket, that is to say without involving the deformability of the flexible pocket to create a relative balance between the pressures of the gaseous fluids located on either side of its flexible wall. 5. Procédé selon l'une quelconque des revendications 1 à 4 caractérisé en ce que pendant l'injection de fluide de substitution (3) dans la poche souple (1), on injecte de l'air dans le volume (40) du caisson (4) en tant que fluide de remplissage (5). 5. Method according to any one of claims 1 to 4 characterized in that during the injection of substitution fluid (3) into the flexible bag (1), air is injected into the volume (40) of the box (4) as filling fluid (5). 6. Moyens pour la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 5 caractérisés en ce qu ils comprennent au moins 6. Means for implementing the method according to any one of claims 1 to 5 characterized in that they comprise at least - un -(m)oyen 8 en vue d'isoler le volume utile (12) de la poche de celui (40) du caisson, - a - (m) oyen 8 in order to isolate the useful volume (12) of the pocket from that (40) of the box, - deux moyens distincts (9, 10) chacun de raccordement des volumes (12, 40) précités à une source (6, 7) de Chacun des fluides (3, 5), - two separate means (9, 10) each for connecting the above-mentioned volumes (12, 40) to a source (6, 7) of each of the fluids (3, 5), - deux moyens distincts (13, 14) d'ajustement du débit des fluides (3, 5) issus des sources distinctes (6, 7), - two separate means (13, 14) for adjusting the flow rate of the fluids (3, 5) from the separate sources (6, 7), - un moyen d'ajustement (15) de la durée d'injection au moins du fluide de substitution.  - Means for adjusting (15) the duration of injection of at least the substitution fluid.
FR8716442A 1987-11-20 1987-11-20 METHOD OF PLACING UNDER THE CONTROLLED ATMOSPHERE OF THE INTERIOR OF FLEXIBLE POCKETS AND MEANS FOR CARRYING OUT SAID METHOD Expired - Fee Related FR2623471B1 (en)

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FR8716442A FR2623471B1 (en) 1987-11-20 1987-11-20 METHOD OF PLACING UNDER THE CONTROLLED ATMOSPHERE OF THE INTERIOR OF FLEXIBLE POCKETS AND MEANS FOR CARRYING OUT SAID METHOD

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FR8716442A FR2623471B1 (en) 1987-11-20 1987-11-20 METHOD OF PLACING UNDER THE CONTROLLED ATMOSPHERE OF THE INTERIOR OF FLEXIBLE POCKETS AND MEANS FOR CARRYING OUT SAID METHOD

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FR2623471A1 true FR2623471A1 (en) 1989-05-26
FR2623471B1 FR2623471B1 (en) 1990-03-16

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999011134A1 (en) * 1997-08-29 1999-03-11 Willem Antoon Pieter Putter Method and device for preserving food products
WO2003024804A1 (en) * 2001-09-14 2003-03-27 Sealed Air (New Zealand) Limited Vacuum gas flush packaging machine
WO2004011335A1 (en) * 2002-07-26 2004-02-05 Levati Food Tech S.R.L. Method and machine for filling pouch packages or envelopes, in particular for food and/or pharmaceutical products

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3238696A (en) * 1961-03-23 1966-03-08 Christensson Od Wikar Arrangement for vacuum packaging of brittle material
FR1538738A (en) * 1967-08-30 1968-09-06 Anderson Bros Mfg Co Method and apparatus for packaging in a protective atmosphere

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3238696A (en) * 1961-03-23 1966-03-08 Christensson Od Wikar Arrangement for vacuum packaging of brittle material
FR1538738A (en) * 1967-08-30 1968-09-06 Anderson Bros Mfg Co Method and apparatus for packaging in a protective atmosphere

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999011134A1 (en) * 1997-08-29 1999-03-11 Willem Antoon Pieter Putter Method and device for preserving food products
US6268001B1 (en) 1997-08-29 2001-07-31 Willem Antoon Pieter Putter Method and device for preserving food products
WO2003024804A1 (en) * 2001-09-14 2003-03-27 Sealed Air (New Zealand) Limited Vacuum gas flush packaging machine
WO2004011335A1 (en) * 2002-07-26 2004-02-05 Levati Food Tech S.R.L. Method and machine for filling pouch packages or envelopes, in particular for food and/or pharmaceutical products

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