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EP0700839A1 - Device for venting air from a packaging bag - Google Patents

Device for venting air from a packaging bag Download PDF

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Publication number
EP0700839A1
EP0700839A1 EP95460032A EP95460032A EP0700839A1 EP 0700839 A1 EP0700839 A1 EP 0700839A1 EP 95460032 A EP95460032 A EP 95460032A EP 95460032 A EP95460032 A EP 95460032A EP 0700839 A1 EP0700839 A1 EP 0700839A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
air
bag
heat
valve
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.)
Withdrawn
Application number
EP95460032A
Other languages
German (de)
French (fr)
Inventor
Pierre-Henri Cospain
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.)
CIF (S.A.)
Original Assignee
Cif (sa)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cif (sa) filed Critical Cif (sa)
Publication of EP0700839A1 publication Critical patent/EP0700839A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
    • B65D81/2038—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum with means for establishing or improving vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/225—Pressure relief-valves incorporated in a container wall, e.g. valves comprising at least one elastic element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
    • B65D81/2023—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum in a flexible container

Definitions

  • the present invention relates to the field of packaging and conditioning of various materials. It particularly finds its application in the field of packaging and conditioning of pulverulent materials of various natures, in particular food or chemical.
  • the packaging and packaging of these materials is carried out using heat-sealable bags which make it possible to ensure a good seal of their contents and to prevent their leakage.
  • These bags can in particular be made of plastic material or else of paper provided, at least at the closure, with an internal coating of plastic material capable of allowing heat sealing.
  • Such packages are hermetically sealed after filling.
  • it is necessary to avoid the introduction of air into the bags at the time of packaging.
  • the presence of air in the packaging bags has many disadvantages.
  • the air obviously increases the volume of the bags, which in particular in the industrial packaging of large quantities of material, requires larger storage volumes.
  • the presence of air is inconvenient for the conservation of certain types of materials. This is the case for materials sensitive to oxidation or sensitive to the humidity that air can contain.
  • the presence of air also increases the fragility of the bags and the risk of perforation of the latter during handling is thereby increased.
  • valve allowing the evacuation of air must be inserted on the wall of the bag. This operation can only take place during the manufacture of the bags which makes it more difficult to implement and therefore more expensive.
  • the valve will already be present on the bag during filling, which will also make this operation more difficult.
  • the filling operations are carried out by automatic machines: the bags are sorted, moved on rolling belts and the valve which is in fact in the form of a protuberance makes these operations more complicated.
  • Another drawback is related to the storage and handling of the bags. Indeed the protruding valves can cause by friction on other bags of the perforations. Optimal stacking of bags is also more difficult.
  • the object of the present invention is to propose a device making it possible to evacuate at least partially the air contained in a packaging bag which does not have such drawbacks.
  • Another object of the invention is to provide such a device which can easily be implemented outside the process of manufacturing said bag.
  • Yet another objective of the invention is to describe such a device making it possible to quickly and naturally evacuate the air from the packaging bags while eliminating any protuberance on the surface of these bags.
  • Another objective of the invention is to allow easier automatic filling of the bags and to prevent the perforation of the bags during their packaging.
  • a device for evacuating at least part of the air trapped in a heat-sealable packaging bag in particular for pulverulent material, characterized in that it consists of a sleeve open to only one of its ends, said sleeve being formed at least at said end by an inner non-heat-sealable material and by an outer heat-sealable material, said sleeve being intended to be placed in the mouth of said bag when the latter is closed so as to allow the passage of the air contained in said bag to the outside.
  • the device according to the invention can be put in place after the manufacture of the bags and after filling, which offers the main advantage of easier handling.
  • the sleeve which offers a large opening thus allows a rapid and natural evacuation of the air, that is to say without pumping operations.
  • the evacuation of the air from the interior of the bags provided with such a device may be caused by the simple stacking of these on top of each other.
  • the device, object of the invention has no annoying protuberance during subsequent handling of the filled bags.
  • the risks of perforation linked to the presence of a valve fixed on the wall of the bag are therefore zero and storage is easier.
  • said sleeve is made of a material allowing air to pass, bordered at its upper end by an outer heat-sealable material.
  • said material allowing air to pass is a filtering material such as for example non-woven fibers.
  • said sleeve consists of an air-impermeable material provided with at least one valve secured to said material.
  • the device comprises a tongue made of non-heat-sealable material inserted inside the sleeve and intended to prevent the closing of said sleeve during the closing of said bag by heat-sealing. Such a tab can be removed after closing the bag.
  • said sleeve made of impermeable material consists of an outer envelope made of a heat-sealable material and an inner envelope made of a non-heat-sealable material.
  • valve used is a unidirectional valve allowing the passage of air only from the inside of the bag to the outside. The air can thus easily exit the bag without being able to re-enter it.
  • the closed end of said sleeve forms a bottom, said valve being preferably fixed on said bottom.
  • Such an arrangement prevents the valve from coming stick against the wall of the bag, which, under certain conditions, could hinder its operation.
  • valve fixed to said bottom is covered with a material allowing air to pass through, such as filter paper.
  • the air exhaust device shown is constituted by a sleeve 2 open at only one of its ends 3, the other end being sealed.
  • This sleeve was produced by assembling two sheets of filter material allowing the air to pass, provided on their outer periphery with a strip of heat-sealable plastic material 4.
  • the sleeve thus has an opening 3a allowing communication from the inside of the sleeve with the outside.
  • the device also includes a tongue 11 made of a non-heat-sealable material placed inside the sleeve.
  • the sleeve shown is intended to be placed in the mouth of a heat-sealable packaging bag when the latter is closed so as to allow the passage of the air contained in said bag towards the outside, through the filtering material. nonwoven.
  • the tongue 11 ensures that, when the bag is closed by heat sealing, the opening of the sleeve 2 is not closed at the same time. This tab can then be removed. Once the bag has been degassed, a second weld can even be envisaged to close the sleeve.
  • the second embodiment of the invention shown consists of a sleeve made of an air-impermeable material and is provided with a valve 5.
  • the air-impermeable material consists of an outer envelope 6 made of a heat-sealable plastic material and an inner envelope 7 made of a non-heat sealable material.
  • the valve 5 used is a unidirectional valve allowing the passage of air only in one direction, that is to say from the outside of the sleeve towards the inside thereof, towards the opening 3a.
  • the third embodiment of the invention shown includes a sleeve 2 open at its end 3 made of a material similar to that of the embodiment shown in Figure 2.
  • This sleeve also has one end 8 forming a bottom 9 on which is fixed a one-way valve 5.
  • the bottom 9 is moreover covered with a filtering material 10 allowing the air to pass and making it possible to ensure correct operation of the valve.
  • a packaging bag 1 with plastic bellows is equipped with a device conforming to FIG. 3 incorporating a valve 5.
  • This device is inserted into the mouth of the bag when the latter is closed by heat-sealing it. this, inside of it.
  • the closure line 11 cooperates with the sleeve 2 in the upper part thereof.
  • the inner material of said sleeve 2 being made of a non-heat-sealable material, the opening 3a of the sleeve on the outside is ensured.
  • the air contained in this bag can be removed by simple pressure (possibly during storage) thereof.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Abstract

The extractor removes at least part of the air from a bag (1) which can be thermally sealed after filling with a powdered product. The extractor consists of a sleeve (2) which is open at one end only and is fitted into the top of the bag to allow the air to be expelled. The sleeve is made from a permeable, e.g. filter, material which allows air to pass through it. Otherwise it can be made from an impermeable material and be equipped with a non-return valve which lets the air out but not in.

Description

La présente invention concerne le domaine de l'emballage et du conditionnement de divers matériaux. Elle trouve tout particulièrement son application dans le domaine de l'emballage et du conditionnement des matériaux pulvérulents de diverses natures, notamment alimentaires ou chimiques.The present invention relates to the field of packaging and conditioning of various materials. It particularly finds its application in the field of packaging and conditioning of pulverulent materials of various natures, in particular food or chemical.

En règle générale l'emballage et le conditionnement de ces matériaux se fait à l'aide de sacs thermoscellables permettant d'assurer une bonne étanchéité de leur contenu et d'éviter la fuite de celui-ci. Ces sacs peuvent notamment être constitués en matière plastique ou encore en papier pourvu, au moins au niveau de la fermeture, d'un revêtement intérieur en matière plastique susceptible de permettre le thermoscellage.As a general rule, the packaging and packaging of these materials is carried out using heat-sealable bags which make it possible to ensure a good seal of their contents and to prevent their leakage. These bags can in particular be made of plastic material or else of paper provided, at least at the closure, with an internal coating of plastic material capable of allowing heat sealing.

De tels emballages sont soudés hermétiquement après remplissage. Afin de permettre une bonne conservation du produit conditionné et d'éviter la dégradation des qualités de celui-ci, il est nécessaire d'éviter l'introduction d'air dans les sacs au moment du conditionnement. En effet, la présence d'air dans les sacs de conditionnement présente de nombreux inconvénients. Ainsi l'air augmente évidemment le volume des sacs, ce qui en particulier dans le conditionnement industriel de grandes quantités de matériau, nécessite des volumes de stockage plus importants. Il est d'autre part fréquent que la présence d'air soit gênante pour la conservation de certains types de matériaux. Il en est ainsi des matériaux sensibles à l'oxydation ou encore sensibles à l'humidité que l'air peut contenir. La présence d'air augmente également la fragilité des sacs et le risque de perforation de ces derniers lors de leur manutention s'en trouve ainsi accrue.Such packages are hermetically sealed after filling. In order to allow good preservation of the packaged product and to avoid degradation of the qualities thereof, it is necessary to avoid the introduction of air into the bags at the time of packaging. Indeed, the presence of air in the packaging bags has many disadvantages. Thus the air obviously increases the volume of the bags, which in particular in the industrial packaging of large quantities of material, requires larger storage volumes. It is also frequent that the presence of air is inconvenient for the conservation of certain types of materials. This is the case for materials sensitive to oxidation or sensitive to the humidity that air can contain. The presence of air also increases the fragility of the bags and the risk of perforation of the latter during handling is thereby increased.

Pour ces différentes raisons il est souhaitable d'éliminer totalement, ou en grande partie au moins, l'air contenu dans les sacs de conditionnement.For these various reasons, it is desirable to eliminate totally, or at least largely, the air contained in the packaging bags.

Afin d'atteindre ce résultat, il a pu être envisagé dans l'état de la technique de munir les emballages thermoscellables d'au moins une valve unidirectionnelle insérée sur la paroi du sac. Ainsi, une évacuation de l'air peut avoir lieu de l'intérieur du sac vers l'extérieur de celui-ci.In order to achieve this result, it has been possible in the state of the art to provide the heat-sealable packages with at least one unidirectional valve inserted on the wall of the bag. Thus, an evacuation of the air can take place from the inside of the bag towards the outside of the latter.

L'utilisation d'une telle valve présente cependant de nombreux inconvénients. En effet, la valve permettant l'évacuation de l'air doit être insérée sur la paroi du sac. Cette opération ne peut avoir lieu que lors de la fabrication des sacs ce qui rend cette dernière plus difficile à mettre en oeuvre et donc plus onéreuse.The use of such a valve however has many disadvantages. Indeed, the valve allowing the evacuation of air must be inserted on the wall of the bag. This operation can only take place during the manufacture of the bags which makes it more difficult to implement and therefore more expensive.

De par ces impératifs de fabrication la valve sera déjà présente sur le sac lors du remplissage ce qui rendra cette opération également plus difficile. En effet au niveau industriel, les opérations de remplissage sont effectuées par des automates : les sacs sont triés, déplacés sur des bandes roulantes et la valve qui se présente en fait sous la forme d'une protubérance rend ces opérations plus compliquées.Due to these manufacturing requirements, the valve will already be present on the bag during filling, which will also make this operation more difficult. In fact at the industrial level, the filling operations are carried out by automatic machines: the bags are sorted, moved on rolling belts and the valve which is in fact in the form of a protuberance makes these operations more complicated.

Un autre inconvénient est lié au stockage et à la manipulation des sacs. En effet les valves protubérantes peuvent provoquer par frottement sur d'autres sacs des perforations. Un empilement optimum des sacs est également plus difficile.Another drawback is related to the storage and handling of the bags. Indeed the protruding valves can cause by friction on other bags of the perforations. Optimal stacking of bags is also more difficult.

La présente invention a pour objet de proposer un dispositif permettant d'évacuer au moins en partie l'air contenu dans un sac de conditionnement ne présentant pas de tels inconvénients.The object of the present invention is to propose a device making it possible to evacuate at least partially the air contained in a packaging bag which does not have such drawbacks.

Un autre objectif de l'invention est de fournir un tel dispositif pouvant facilement être mis en oeuvre en dehors du processus de fabrication dudit sac.Another object of the invention is to provide such a device which can easily be implemented outside the process of manufacturing said bag.

Encore un autre objectif de l'invention est de décrire un tel dispositif permettant d'évacuer rapidement et naturellement l'air des sacs de conditionnement tout en supprimant toute protubérance à la surface de ces sacs.Yet another objective of the invention is to describe such a device making it possible to quickly and naturally evacuate the air from the packaging bags while eliminating any protuberance on the surface of these bags.

Enfin, un autre objectif de l'invention est de permettre un remplissage éventuellement automatisé des sacs plus facile et d'empêcher la perforation des sacs lors de leur conditionnement.Finally, another objective of the invention is to allow easier automatic filling of the bags and to prevent the perforation of the bags during their packaging.

Ces différents objectifs sont atteints grâce à l'invention qui concerne un dispositif pour évacuer au moins une partie de l'air emprisonné dans un sac de conditionnement thermoscellable, notamment pour matériau pulvérulent, caractérisé en ce qu'il est constitué par un manchon ouvert à une seule de ses extrémités, ledit manchon étant constitué au moins au niveau de ladite extrémité par un matériau intérieur non thermoscellable et par un matériau extérieur thermoscellable, ledit manchon étant destiné à être placé dans la gueule dudit sac lors de la fermeture de celui-ci de façon à permettre le passage de l'air contenu dans ledit sac vers l'extérieur.These various objectives are achieved by means of the invention which relates to a device for evacuating at least part of the air trapped in a heat-sealable packaging bag, in particular for pulverulent material, characterized in that it consists of a sleeve open to only one of its ends, said sleeve being formed at least at said end by an inner non-heat-sealable material and by an outer heat-sealable material, said sleeve being intended to be placed in the mouth of said bag when the latter is closed so as to allow the passage of the air contained in said bag to the outside.

Ainsi le dispositif selon l'invention peut être mis en place après la fabrication des sacs et après leur remplissage ce qui offre l'avantage principal d'une manutention facilitée. Le manchon qui offre une ouverture importante permet ainsi une évacuation rapide et naturelle de l'air, c'est à dire sans opérations de pompage. En particulier, l'évacuation de l'air de l'intérieur des sacs pourvus d'un tel dispositif pourra être provoqué par le simple empilement de ceux-ci les uns sur les autres.Thus the device according to the invention can be put in place after the manufacture of the bags and after filling, which offers the main advantage of easier handling. The sleeve which offers a large opening thus allows a rapid and natural evacuation of the air, that is to say without pumping operations. In particular, the evacuation of the air from the interior of the bags provided with such a device may be caused by the simple stacking of these on top of each other.

Le dispositif, objet de l'invention, ne présente aucune protubérance gênante lors des manipulations ultérieures des sacs remplis. Les risques de perforation liées à la presence d'une valve fixés sur la paroi du sac sont donc nuls et le stockage est plus aisé.The device, object of the invention, has no annoying protuberance during subsequent handling of the filled bags. The risks of perforation linked to the presence of a valve fixed on the wall of the bag are therefore zero and storage is easier.

Selon une variante de l'invention, ledit manchon est réalisé en un matériau laissant passer l'air, bordé au niveau de son extrémité supérieure par un matériau extérieur thermoscellable.According to a variant of the invention, said sleeve is made of a material allowing air to pass, bordered at its upper end by an outer heat-sealable material.

Avantageusement, ledit matériau laissant passer l'air est un matériau filtrant tel que par exemple des fibres non tissées.Advantageously, said material allowing air to pass is a filtering material such as for example non-woven fibers.

Selon une autre variante de l'invention, ledit manchon est constitué par un matériau imperméable à l'air muni d'au moins une valve solidarisée audit matériau. Lorsque le dispositif selon l'invention présentant une telle valve est placé dans la gueule du sac lors de la fermeture de celui-ci, cette valve se trouve ainsi positionnée à l'intérieur du sac et ne gêne donc pas le stockage ultérieur du sac rempli.According to another variant of the invention, said sleeve consists of an air-impermeable material provided with at least one valve secured to said material. When the device according to the invention having such a valve is placed in the mouth of the bag when the latter is closed, this valve is thus positioned inside the bag and therefore does not interfere with the subsequent storage of the filled bag. .

Egalement selon une autre variante de l'invention, le dispositif comprend une languette en matériau non thermoscellable insérée à l'intérieur du manchon et destinée à empêcher la fermeture dudit manchon lors de la fermeture dudit sac par thermoscellage. Une telle languette peut être ôtée après fermeture du sac.Also according to another variant of the invention, the device comprises a tongue made of non-heat-sealable material inserted inside the sleeve and intended to prevent the closing of said sleeve during the closing of said bag by heat-sealing. Such a tab can be removed after closing the bag.

Egalement de façon avantageuse, ledit manchon en matériau imperméable est constitué d'une enveloppe extérieure en un matériau thermoscellable et d'une enveloppe intérieure en un matériau non-thermoscellable.Also advantageously, said sleeve made of impermeable material consists of an outer envelope made of a heat-sealable material and an inner envelope made of a non-heat-sealable material.

De préférence la valve utilisée est une valve unidirectionnelle ne permettant le passage de l'air que de l'intérieur du sac vers l'extérieur. L'air peut ainsi sortir aisément du sac sans pouvoir s'y réintroduire.Preferably the valve used is a unidirectional valve allowing the passage of air only from the inside of the bag to the outside. The air can thus easily exit the bag without being able to re-enter it.

Avantageusement l'extrémité fermée dudit manchon forme un fond, ladite valve étant fixée préférentiellement sur ledit fond. Une telle disposition évite à la valve de venir coller contre la paroi du sac, ce qui, dans certaines conditions, pourrait gêner son fonctionnement.Advantageously, the closed end of said sleeve forms a bottom, said valve being preferably fixed on said bottom. Such an arrangement prevents the valve from coming stick against the wall of the bag, which, under certain conditions, could hinder its operation.

Enfin, également selon une variante préférentielle, ladite valve fixée sur ledit fond est recouverte d'un matériau laissant passer l'air tel qu'un papier filtre.Finally, also according to a preferred variant, said valve fixed to said bottom is covered with a material allowing air to pass through, such as filter paper.

L'invention ainsi que les différents avantages qu'elle présente seront plus facilement compris grâce à la description d'un mode de réalisation qui va suivre en référence aux dessins dans lesquels:

  • la figure 1 représente un premier mode de réalisation du dispositif d'évacuation d'air selon l'invention, sans valve ;
  • la figure 2 représente un second mode de réalisation du dispositif d'évacuation d'air selon l'invention, incorporant une valve ;
  • la figure 3 représente un troisième mode de réalisation du dispositif d'évacuation d'air selon l'invention, incorporant une valve fixée sur le fond du manchon;
  • la figure 4 représente un sac de conditionnement muni d'un dispositif d'évacuation d'air selon la figure 2.
The invention as well as the various advantages which it presents will be more easily understood thanks to the description of an embodiment which will follow with reference to the drawings in which:
  • Figure 1 shows a first embodiment of the air exhaust device according to the invention, without valve;
  • FIG. 2 represents a second embodiment of the air evacuation device according to the invention, incorporating a valve;
  • FIG. 3 represents a third embodiment of the air evacuation device according to the invention, incorporating a valve fixed to the bottom of the sleeve;
  • FIG. 4 represents a packaging bag provided with an air evacuation device according to FIG. 2.

En référence à la figure 1, le dispositif d'évacuation d'air représenté est constitué par un manchon 2 ouvert à une seule de ses extrémités 3, l'autre extrémité étant scellée. Ce manchon a été réalisé par l'assemblage de deux feuilles de matériau filtrant laissant passer l'air pourvus sur leur pourtour extérieur d'une bande de matériau plastique 4 thermoscellable. Le manchon présente ainsi une ouverture 3a permettant la communication de l'intérieur du manchon avec l'extérieur. Le dispositif comprend également une languette 11 constitué dans un matériau non thermoscellable placée à l'intérieur du manchon.Referring to Figure 1, the air exhaust device shown is constituted by a sleeve 2 open at only one of its ends 3, the other end being sealed. This sleeve was produced by assembling two sheets of filter material allowing the air to pass, provided on their outer periphery with a strip of heat-sealable plastic material 4. The sleeve thus has an opening 3a allowing communication from the inside of the sleeve with the outside. The device also includes a tongue 11 made of a non-heat-sealable material placed inside the sleeve.

Le manchon représenté est destiné à être placé dans la gueule d'un sac de conditionnement thermoscellable lors de la fermeture de celui-ci de façon à permettre le passage de l'air contenu dans ledit sac vers l'extérieur, à travers le matériau filtrant non tissé. La languette 11 permet d'assurer que, lors de la fermeture du sac par thermoscellage, l'ouverture du manchon 2 ne soit pas fermée en même temps. Cette languette peut être ensuite ôtée. Une fois le dégazage du sac effectué, il peut même être envisagé un seconde soudure pour fermer le manchon.The sleeve shown is intended to be placed in the mouth of a heat-sealable packaging bag when the latter is closed so as to allow the passage of the air contained in said bag towards the outside, through the filtering material. nonwoven. The tongue 11 ensures that, when the bag is closed by heat sealing, the opening of the sleeve 2 is not closed at the same time. This tab can then be removed. Once the bag has been degassed, a second weld can even be envisaged to close the sleeve.

En référence à la figure 2, le second mode de réalisation de l'invention représenté est constitué par un manchon réalisé en un matériau imperméable à l'air et est muni d'une valve 5 . Le matériau imperméable à l'air est constitué d'une enveloppe extérieure 6 en un matériau plastique thermoscellable et d'une enveloppe intérieure 7 en un matériau non-thermoscellable. La valve 5 utilisée est une valve unidirectionnelle ne permettant le passage de l'air que dans un seul sens, c'est-à-dire de l'extérieur du manchon vers l'intérieur de celui-ci, vers l'ouverture 3a.With reference to FIG. 2, the second embodiment of the invention shown consists of a sleeve made of an air-impermeable material and is provided with a valve 5. The air-impermeable material consists of an outer envelope 6 made of a heat-sealable plastic material and an inner envelope 7 made of a non-heat sealable material. The valve 5 used is a unidirectional valve allowing the passage of air only in one direction, that is to say from the outside of the sleeve towards the inside thereof, towards the opening 3a.

En référence à la figure 3, le troisième mode de réalisation de l'invention représenté inclut un manchon 2 ouvert à son extrémité 3 réalisé dans un matériau similaire à celui du mode de réalisation représenté à la figure 2. Ce manchon comporte par ailleurs une extrémité 8 formant un fond 9 sur lequel est fixé une valve unidirectionnelle 5. Le fond 9 est par ailleurs recouvert d'un matériau filtrant 10 laissant passer l'air et permettant d'assurer un bon fonctionnement de la valve.Referring to Figure 3, the third embodiment of the invention shown includes a sleeve 2 open at its end 3 made of a material similar to that of the embodiment shown in Figure 2. This sleeve also has one end 8 forming a bottom 9 on which is fixed a one-way valve 5. The bottom 9 is moreover covered with a filtering material 10 allowing the air to pass and making it possible to ensure correct operation of the valve.

En référence à la figure 4, un sac de conditionnement 1 à soufflets en plastique est équipé d'un dispositif conforme à la figure 3 incorporant une valve 5. Ce dispositif est inséré dans la gueule du sac lors de la fermeture par thermoscellage de celui-ci, à l'intérieur de celui-ci. La ligne de fermeture 11 coopère avec le manchon 2 dans la partie supérieure de celui-ci. Le matériau intérieur dudit manchon 2 étant constitué d'un matériau non thermoscellable, l'ouverture 3a du manchon sur l'extérieur est assurée. Ainsi, l'air contenu dans ce sac peut être évacué par simple pression (éventuellement lors du stockage) de celui-ci.With reference to FIG. 4, a packaging bag 1 with plastic bellows is equipped with a device conforming to FIG. 3 incorporating a valve 5. This device is inserted into the mouth of the bag when the latter is closed by heat-sealing it. this, inside of it. The closure line 11 cooperates with the sleeve 2 in the upper part thereof. The inner material of said sleeve 2 being made of a non-heat-sealable material, the opening 3a of the sleeve on the outside is ensured. Thus, the air contained in this bag can be removed by simple pressure (possibly during storage) thereof.

Les différents modes de réalisation de l'invention ici présentés n'ont pas pour objet de réduire la portée de celle-ci. En particulier, il pourra être envisagé de munir le dispositif de plus d'une valve et d'employer un tel dispositif sur des sacs de formes différentes de celle représentée.The various embodiments of the invention presented here are not intended to reduce the scope thereof. In particular, it could be envisaged to provide the device with more than one valve and to use such a device on bags of shapes different from that shown.

Claims (10)

Dispositif pour évacuer au moins une partie de l'air emprisonné dans un sac (1) de conditionnement thermoscellable, notamment pour matériau pulvérulent, caractérisé en ce qu'il est constitué par un manchon (2) ouvert à une seule de ses extrémités (3), ledit manchon (2) étant constitué au moins au niveau de ladite extrémité (3) par un matériau intérieur non thermoscellable et par un matériau extérieur thermoscellable, ledit manchon étant destiné à être placé dans la gueule dudit sac (1) lors de la fermeture de celui-ci de façon à permettre le passage de l'air contenu dans ledit sac vers l'extérieur.Device for evacuating at least part of the air trapped in a heat-sealable packaging bag (1), in particular for pulverulent material, characterized in that it consists of a sleeve (2) open at only one of its ends (3 ), said sleeve (2) being constituted at least at said end (3) by an inner non-heat-sealable material and by an outer heat-sealable material, said sleeve being intended to be placed in the mouth of said bag (1) during the closing thereof so as to allow the passage of the air contained in said bag to the outside. Dispositif selon la revendication 1 caractérisé en ce que ledit manchon (2)est réalisé en un matériau laissant passer l'air bordé au niveau de son extrémité supérieure (3) par un matériau extérieur thermoscellable (4).Device according to claim 1 characterized in that said sleeve (2) is made of a material allowing air to pass bordered at its upper end (3) by an outer heat-sealable material (4). Dispositif selon la revendication 2 caractérisé en ce que ledit matériau laissant passer l'air est un matériau filtrant.Device according to claim 2 characterized in that said material allowing air to pass is a filtering material. Dispositif selon la revendication 1 caractérisé en ce que ledit manchon (2) est constitué par un matériau imperméable à l'air et en ce qu'il est muni d'au moins une valve (5) solidarisée audit matériau.Device according to claim 1 characterized in that said sleeve (2) consists of an air-impermeable material and in that it is provided with at least one valve (5) secured to said material. Dispositif selon la revendication 4 caractérisé en ce que ledit manchon (2) est constitué d'une enveloppe extérieure (6) en un matériau thermoscellable et d'une enveloppe intérieure (7) en un matériau non-thermoscellable.Device according to claim 4 characterized in that said sleeve (2) consists of an outer envelope (6) of a heat-sealable material and an inner envelope (7) of a non-heat-sealable material. Dispositif selon l'une des revendications 1 à 4 caractérisé en ce qu'il comprend une languette (11) en matériau non thermoscellable insérée à l'intérieur du manchon et destinée à empêcher la fermeture dudit manchon (2) lors de la fermeture dudit sac par thermoscellage.Device according to one of claims 1 to 4 characterized in that it comprises a tongue (11) of non-heat-sealable material inserted inside the sleeve and intended to prevent the closure of said sleeve (2) during the closure of said bag by heat sealing. Dispositif selon l'une des revendications 4 à 6 caractérisé en ce que ladite valve (5) est une valve unidirectionnelle ne permettant le passage de l'air que de l'intérieur du sac vers l'extérieur.Device according to one of claims 4 to 6 characterized in that said valve (5) is a unidirectional valve allowing the passage of air only from the inside of the bag to the outside. Dispositif selon l'une des revendications 4 à 7 caractérisé en ce que l'extrémité fermée (8) dudit manchon forme un fond (9).Device according to one of claims 4 to 7 characterized in that the closed end (8) of said sleeve forms a bottom (9). Dispositif selon la revendication 8 caractérisé en ce que ladite valve (5) est fixée sur ledit fond (9).Device according to claim 8 characterized in that said valve (5) is fixed to said bottom (9). Dispositif selon la revendication 9 caractérisé en ce que ladite valve fixée sur ledit fond (9) est recouverte d'un matériau laissant passer l'air (10).Device according to Claim 9, characterized in that the said valve fixed to the said bottom (9) is covered with a material allowing the air to pass (10).
EP95460032A 1994-09-07 1995-09-06 Device for venting air from a packaging bag Withdrawn EP0700839A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9410876 1994-09-07
FR9410876A FR2724152B1 (en) 1994-09-07 1994-09-07 DEVICE FOR EXHAUSTING THE AIR CONTAINED IN A PACKAGING BAG

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EP0700839A1 true EP0700839A1 (en) 1996-03-13

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EP95460032A Withdrawn EP0700839A1 (en) 1994-09-07 1995-09-06 Device for venting air from a packaging bag

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EP (1) EP0700839A1 (en)
FR (1) FR2724152B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1265787A1 (en) * 2000-03-02 2002-12-18 Tempra Technology, Inc. Vacuum packaging aid
EP1893490A1 (en) * 2005-06-24 2008-03-05 The Glad Products Company Storage bag with evacuation device
WO2013057725A2 (en) 2011-10-19 2013-04-25 Instituto De Capacitacion E Investigacion Del Plastico Y Del Caucho Icipc Packaging comprising a breathable valve for perishable products
US10167116B1 (en) 2017-08-31 2019-01-01 Dow Global Technologies Llc Flexible bag with microcapillary strip

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3052633B1 (en) * 2016-06-17 2019-01-25 Frederic Poujaud DEVICE FOR VACUUM STORAGE AND GRAIN TRANSPORT

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH301664A (en) * 1952-08-14 1954-09-15 Dreyer Andre Watertight container for liquids.
DE2747071A1 (en) * 1977-10-20 1979-04-26 Sengewald Karl H Gas-tight foil bag for food - with vent valve for gas relief blocking ingress of air
US4310118A (en) * 1979-08-10 1982-01-12 C. I. Kasei Co. Ltd. Packaging bags for powdery materials

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH301664A (en) * 1952-08-14 1954-09-15 Dreyer Andre Watertight container for liquids.
DE2747071A1 (en) * 1977-10-20 1979-04-26 Sengewald Karl H Gas-tight foil bag for food - with vent valve for gas relief blocking ingress of air
US4310118A (en) * 1979-08-10 1982-01-12 C. I. Kasei Co. Ltd. Packaging bags for powdery materials

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1265787A1 (en) * 2000-03-02 2002-12-18 Tempra Technology, Inc. Vacuum packaging aid
JP2003525181A (en) * 2000-03-02 2003-08-26 テンプラ テクノロジー，インコーポレーテッド Vacuum packaging aid
EP1265787A4 (en) * 2000-03-02 2004-03-03 Tempra Tech Inc Vacuum packaging aid
EP1893490A1 (en) * 2005-06-24 2008-03-05 The Glad Products Company Storage bag with evacuation device
EP1893490A4 (en) * 2005-06-24 2009-08-12 Glad Products Co Storage bag with evacuation device
WO2013057725A2 (en) 2011-10-19 2013-04-25 Instituto De Capacitacion E Investigacion Del Plastico Y Del Caucho Icipc Packaging comprising a breathable valve for perishable products
US10167116B1 (en) 2017-08-31 2019-01-01 Dow Global Technologies Llc Flexible bag with microcapillary strip
WO2019046395A1 (en) * 2017-08-31 2019-03-07 Dow Global Technologies Llc Flexible bag with microcapillary strip

Also Published As

Publication number Publication date
FR2724152B1 (en) 1996-12-06
FR2724152A1 (en) 1996-03-08

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