EP2470445B1 - Barrels for storing and dispensing drinks under pressure like beer - Google Patents

Description

The invention relates to a single-use drum for storing and withdrawing a pressurized beverage such as beer or lemonade.

The invention more specifically relates to the barrel in question, in its various possible states, in particular on the one hand assembled and empty of liquid, on the other hand assembled and filled with liquid and ready for use. It also relates to all the means to be associated rigidly to form such a shaft thus assembled. Finally, it relates to the method of packaging a liquid such as a drink under pressure in such a drum.

The document WO 2008/132328 describes a drum comprising firstly a sealed and flexible plastic bag, able to contain the liquid, to withstand the internal or external pressure exerted on it, and provided with an opening through which it can be filled respectively with the liquid or the withdrawal of the liquid it contains.

The drum according to the document WO 2008/132328 then comprises a container adapted to receive the bag, shaped to form an internal volume of the order of 5, 10 or 15 liters adapted to the capacity of the bag and to allow the nesting of the container with other similar containers before their mounting to form drums, the container having a rigidity adapted to withstand the pressure in the barrel once assembled, and finally having an opening for loading the bag.

The drum according to the document WO 2008/132328 then comprises a lid in the general shape of a cap, able to close the container on the side of its opening, having a rigidity able to withstand the pressure prevailing in the barrel once assembled, having on one side an opening and the opposite an orifice provided, of manufacture, of a neck forming an integral part of the cover, which neck, cylindrical in shape, extending outwardly of the lid and the barrel.

The container and the lid, provided with complementary rigid association means, with sealing, are suitable for being rigidly joined by crimping, with sealing, their two openings then coming into reciprocal coincidence.

The bag is adapted to be rigidly and sealingly associated with the lid, its opening being then arranged facing the neck and in communication with it.

The drum according to the document WO 2008/132328 finally comprises a cap comprising a hollow cylindrical lateral body supporting means for closing the barrel and means for withdrawing the liquid.

The internal lateral face of the neck of the lid and the conjugate external lateral face of the body of the cap, provided with complementary rigid association means, with sealing, are able to be rigidly associated, with sealing.

The teaching of the document WO 2008/132328 , however useful it may be with regard to certain principles of design of a drum for the storage and withdrawal of a drink under pressure (beer, lemonade), does not allow to envisage or ensure a realization which at the same time easy, economical, efficient and industrializable. Indeed, the cask here considered is typically a domestic single-use drum, it should be able to manufacture in large quantities, reliably and at acceptable cost conditions with respect to the destination of such a drum. In addition, it is important that such barrel gives any guarantee in terms of safety, especially that the user can not reuse the drum unduly or open.

The document US 5,267,669 describes a beverage dispenser comprising a flexible bag whose peripheral opening edge is trapped in a slot of the dispenser body or, preferably, is placed so as to be gripped by two parts of the dispenser body, complementary to one of the 'other. The distributor comprises in the upper part a threaded orifice in communication with the inside of the bag, on which can be attached, outside, withdrawal means. Thus, the peripheral edge of the bag is it away from the threaded orifice and the withdrawal means. Such an embodiment can not provide the guarantee of a maintenance both waterproof and resistant to pressure, besides that the introduction of the bag is complex.

The document DE-U-9218003 describes a structure close to the previous one with the same disadvantages.

In the field of soft drinks, and more particularly that of wine, the concept of "bag in box" has been developed (see for example GB-A-2,419,870 ). A bag in box consists of a plastic bag filled with liquid, housed in a corrugated cardboard packaging, with a tap. But, such a bag in box is unsuitable for packaging drinks under pressure. Indeed, the bag can inflate to deform the on packaging.

The invention aims to overcome the aforementioned drawbacks by proposing a single-use drum, particularly domestic, for the storage and withdrawal of a drink under pressure (beer, lemonade), of the general type described in the document WO 2008/132328 , but which, by its structure, makes it possible to envisage a realization which is at the same time easy, economic, effective and industrializable, suitable for a drum for single domestic use giving any guarantee in term of safety, in particular of reuse or of opening of the drum.

• un sac étanche et souple, apte à contenir le liquide, à résister à la pression intérieure ou extérieure exercée sur lui, pourvu d'une ouverture par laquelle on peut assurer respectivement son emplissage avec le liquide ou le soutirage du liquide qu'il contient ;
• un récipient recevant le sac, ayant une rigidité apte à résister à la pression existant à l'intérieur du fût, et comportant une ouverture apte au chargement du sac ; et un couvercle en forme générale de calotte, fermant le récipient du côté de son ouverture, ayant une rigidité apte à résister à la pression existant à l'intérieur du fût, comportant d'un côté une ouverture et ayant, dans une paroi terminale du côté opposé, un orifice en regard de l'ouverture du sac et en communication avec elle ; le récipient et le couvercle pourvus de moyens d'association rigide complémentaires avec étanchéité étant associés rigidement avec étanchéité, leurs deux ouvertures étant en coïncidence réciproque ; un col de forme générale cylindrique s'étendant vers l'extérieur du couvercle et du fût et situé en regard de l'orifice du couvercle et en communication avec lui ;
• une coiffe comprenant un corps latéral cylindrique creux supportant des moyens de fermeture du fût et des moyens de soutirage du liquide, la face latérale interne du col et la face latérale externe conjuguée du corps de la coiffe pourvus de moyens d'association rigide complémentaires avec étanchéité étant associés rigidement avec étanchéité ;

caractérisé en ce que :

• le col est une pièce structurellement distincte du couvercle ;
• la face latérale externe de la pièce formant col et la face latérale interne conjuguée de l'orifice du couvercle sont pourvus de moyens d'association rigide complémentaires avec étanchéité, la pièce formant col et le couvercle étant associés rigidement avec étanchéité, la pièce formant col traversant le couvercle et son extrémité intérieure étant située à l'intérieur du couvercle ;
• le sac est associé de façon rigide et étanche à la pièce formant col vers son extrémité intérieure ;
• au moins un trou, ménagé sur le récipient et/ou le couvercle, est apte à permettre d'injecter à l'intérieur du fût et à l'extérieur du sac un gaz en surpression afin de comprimer le sac ;
• des moyens d'obturation étanche, aptes à être manoeuvrés de l'extérieur du fût sont aptes, de façon sélective, à obturer avec étanchéité ou à ouvrir le trou et, lorsqu'ils obturent le trou à maintenir à l'intérieur du fût la surpression qui y règne, les moyens d'obturation et le récipient et/ou le couvercle où est ménagée le trou étant pourvus de moyens d'association rigide complémentaires.

For this purpose, and according to a first aspect, the invention relates to a barrel in the assembled state and empty of liquid, specially adapted for storing and withdrawing a liquid such as a drink under pressure, comprising:

• a sealed and flexible bag, adapted to contain the liquid, to withstand the internal or external pressure exerted on it, provided with an opening by which it can respectively ensure its filling with the liquid or the withdrawal of the liquid it contains;
• a container receiving the bag, having a rigidity adapted to withstand the pressure existing inside the barrel, and having an opening for loading the bag; and a lid in the general shape of a cap, closing the container on the side of its opening, having a rigidity capable of withstanding the pressure existing inside the barrel, having on one side an opening and having, in an end wall of the opposite side, an orifice opposite the opening of the bag and in communication with it; the container and the lid provided with complementary rigid coupling means with sealing being rigidly associated with sealing, their two openings being in mutual coincidence; a neck of generally cylindrical shape extending outwardly of the lid and the barrel and located opposite the orifice of the lid and in communication with it;
• a cap comprising a hollow cylindrical lateral body supporting means for closing the barrel and means for withdrawing the liquid, the internal lateral face of the neck and the conjugate external side face of the body of the cap provided with complementary rigid coupling means with sealing being rigidly associated with sealing;

characterized in that

• the neck is a structurally distinct part of the lid;
• the external lateral face of the neck-forming part and the conjugate internal lateral face of the lid opening are provided with complementary rigid coupling means with sealing, the neck-forming part and the lid being rigidly associated with sealing, the neck-forming piece being through the lid and its inner end being located inside the lid;
• the bag is rigidly and sealingly associated with the neck piece towards its inner end;
• at least one hole, formed on the container and / or the lid, is adapted to allow to inject inside the barrel and outside the bag a gas under pressure to compress the bag;
• sealing closure means adapted to be operated from the outside of the barrel are selectively adapted to seal with sealing or to open the hole and, when closing the hole to be kept inside the barrel, overpressure prevailing therein, the closure means and the container and / or the lid where the hole is formed being provided with complementary rigid association means.

According to one embodiment, the complementary rigid association means of the collar part and the cover provide an irreversible rigid association, the collar part and the cover being rigidly and irreversibly associated.

According to one embodiment, the complementary rigid association means of the neck member and the cover comprise mating surfaces held rigidly associated by contact and interlocking force.

According to one embodiment, the orifice of the lid is limited laterally by a flange (16) of generally cylindrical shape, projecting from the end wall of the lid towards the outside thereof, and whose side face internal of which collar is provided with means of rigid association with the neck piece.

In one embodiment, the end wall of the cover has a groove extending inwardly of the cover.

According to one embodiment, the collar part, structurally distinct from the cover, comprises on the one hand a generally cylindrical lateral wall whose outer lateral face is provided with means of rigid association with the cover and whose internal lateral face is provided with means of rigid association with the cap and, secondly, a disc-shaped inner end wall abutting against the inner face of the end wall of the lid and which is associated rigidly and sealed the bag by the edge of its opening.

According to one embodiment, the collar part, structurally distinct from the cover, has a generally cylindrical lateral wall and a disk-shaped inner end wall to which the edge of the opening of the bag is rigidly and sealingly associated. by welding or gluing.

According to one embodiment, the complementary rigid association means of the collar part and the cap comprise conjugate surfaces held rigidly associated by contact and interlocking force.

According to one embodiment, the body of the cap is terminated by an outer end portion projecting laterally and in the form of a disc, abutting against an outer end portion projecting laterally and disc-shaped from the lateral wall of the cap. the neck piece.

According to one embodiment, the at least one hole is formed on the lid, and, more specifically, on the end wall of the lid in the vicinity of its orifice.

According to one embodiment, the at least one hole is limited by a tip extending outwardly, suitable for mounting an injection pipe of a gas under pressure.

According to one embodiment, the sealing means of the hole are a piece of deformable plastic, able to be deformed when subjected to a force corresponding to a known pressure exerted on it, operated to deformation of the outside of the barrel in response to the injection, inside the barrel, of the gas under pressure by the at least one hole, said part of the shutter means firstly opening the hole when injected inside the the gas pressure booster, on the other hand, closing the hole when it stops injecting the inside of the barrel gas overpressure or that the inside of the barrel is overpressure.

In this embodiment and in one possible embodiment, the deformable part of the sealing means of the hole comprises a deformable portion forming a valve located against the inner face of the wall where the at least one hole is located, facing this at least one hole.

In this same embodiment and in one possible embodiment, the complementary rigid association means of the deformable part of the closure means and the wall where the at least one hole is located comprise at least one projection-hollow assembly held rigidly associated by contact and interlocking force.

According to one embodiment, the complementary rigid association means of the container and the lid provide an irreversible rigid association, the lid and the container being rigidly and irreversibly associated.

According to one embodiment, the container, on the one hand, and the lid, on the other hand, comprises, on the one hand, an axially extending, axially-extending, axially-extending side wall of generally cylindrical or prismatic shape slightly flared towards the opening, on the other hand, an end wall extending in a transverse plane.

According to one embodiment, the container and / or the lid comprises stiffening reliefs.

According to one embodiment, the container and the lid have an axial dimension similar or of the same order of magnitude. In another embodiment, the lid has a given axial dimension, while the container may have one of a few given axial dimensions, depending on the capacity of the bag.

In one embodiment, the container, the lid, the bag and the neck piece are made of plastic.

According to the embodiments, the bag has a capacity of between about 5 liters to 15 liters. As indicated, it can be expected that while the bag has a capacity in the range and therefore dimensions accordingly, all the constituent parts of the barrel have constant dimensions, with the exception of the reservoir which may have an axial dimension more or less depending on whether the bag has a greater or lesser capacity.

According to one embodiment, the barrel in the assembled state and empty of liquid is such that the bag-neck forming part being formed, the bag having been fixed to the collar part but not yet filled with liquid, this assembly is closed by means of a removable closure system such as a removable cap, to maintain the sterility of the bag until it is filled with liquid. This constructive arrangement allows make the constituent elements in different places and assemble them into another.

According to a second aspect, the subject of the invention is a drum in the assembled state and filled with liquid, ready for use, comprising a drum such as has just been described, the bag being filled with a liquid such as a pressurized beverage, a pressurized gas located inside the drum and outside the bag to compress the bag filled with liquid.

According to one embodiment in the case where the barrel in the assembled state and empty of liquid comprises a removable closure system of the bag, this removable closure system of the bag-piece assembly forming a neck is removed before the bag is filled with liquid.

• un sac étanche et souple, apte à contenir le liquide, à résister à la pression intérieure ou extérieure pouvant être exercée sur lui, pourvu d'une ouverture par laquelle on peut assurer respectivement son emplissage avec le liquide ou le soutirage du liquide qu'il contient ;
• un récipient apte à recevoir le sac, ayant une rigidité apte à résister à la pression pouvant exister à l'intérieur du fût, et comportant une ouverture apte au chargement du sac ; et un couvercle en forme générale de calotte, apte à fermer le récipient du côté de son ouverture, ayant une rigidité apte à résister à la pression pouvant exister à l'intérieur du fût, comportant d'un côté une ouverture et ayant, dans une paroi terminale du côté opposé, un orifice apte à être en regard de l'ouverture du sac et en communication avec elle ; le récipient et le couvercle pourvus de moyens d'association rigide complémentaires avec étanchéité étant aptes à être associés rigidement avec étanchéité, leurs deux ouvertures étant en coïncidence réciproque ;
• une pièce formant col, structurellement distincte du couvercle, de forme générale cylindrique, la face latérale externe de la pièce formant col et la face latérale interne conjuguée de l'orifice du couvercle étant pourvus de moyens d'association rigide complémentaires avec étanchéité, la pièce formant col et le couvercle étant aptes à être associés rigidement avec étanchéité, la pièce formant col étant apte à traverser le couvercle, son extrémité intérieure étant apte à être située à l'intérieur du couvercle, la pièce formant col étant apte à s'étendre vers l'extérieur du couvercle et du fût et être située en regard de l'orifice du couvercle et en communication avec lui, le sac étant apte à être associé de façon rigide et étanche à la pièce formant col vers son extrémité intérieure ;

• une coiffe comprenant un corps latéral cylindrique creux supportant des moyens de fermeture du fût et des moyens de soutirage du liquide, la face latérale interne de la partie formant col et la face latérale externe conjuguée du corps de la coiffe pourvus de moyens d'association rigide complémentaires avec étanchéité étant aptes à être associés rigidement avec étanchéité ;
• au moins un trou, ménagé sur le récipient et/ou le couvercle, apte à permettre d'injecter à l'intérieur du fût et à l'extérieur du sac un gaz en surpression afin de comprimer le sac ;
• des moyens d'obturation étanche, aptes de façon sélective à obturer avec étanchéité ou à ouvrir le trou et, lorsqu'ils obturent le trou à maintenir à l'intérieur du fût la surpression qui y règne, les moyens d'obturation et le récipient et/ou le couvercle où est ménagée le trou étant pourvus de moyens d'association rigide complémentaires.

According to a third aspect, the invention relates to a set of means to be associated in a rigid manner to form a drum as just described, comprising:

• a waterproof and flexible bag, adapted to contain the liquid, to withstand the internal or external pressure that can be exerted on it, provided with an opening by which it can respectively ensure its filling with the liquid or the withdrawal of the liquid that it contains;
• a container adapted to receive the bag, having a rigidity adapted to withstand the pressure that may exist inside the barrel, and having an opening for loading the bag; and a lid in the general shape of a cap, adapted to close the container on the side of its opening, having a rigidity capable of withstanding the pressure that may exist inside the barrel, having on one side an opening and having, in a end wall of the opposite side, an orifice adapted to be facing the opening of the bag and in communication with it; the container and the lid provided with complementary rigid coupling means with sealing being able to be rigidly associated with sealing, their two openings being in mutual coincidence;
• a collar part, structurally distinct from the cover, of generally cylindrical shape, the external lateral face of the collar part and the conjugate internal lateral face of the orifice of the cover being provided with complementary rigid coupling means with sealing, the piece forming neck and the lid being able to be rigidly associated with sealing, the neck-forming part being able to pass through the lid, its inner end being adapted to be situated inside the lid, the neck-forming part being able to extend outwardly of the lid and the barrel and be located opposite the opening of the lid and in communication with it, the bag being adapted to be rigidly and sealingly associated with the collar member towards its inner end;

• a cap comprising a hollow cylindrical lateral body supporting means for closing the barrel and means for withdrawing the liquid, the internal lateral face of the neck portion and the conjugated external lateral face of the body of the cap provided with rigid association means complementary with sealing being able to be associated rigidly with sealing;
• at least one hole, formed on the container and / or the lid, adapted to allow to inject inside the barrel and outside the bag a gas under pressure to compress the bag;
• sealing means, selectively able to close with sealing or opening the hole and, when closing the hole to be maintained inside the barrel, the overpressure which prevails therein, the sealing means and the container and / or the lid where the hole is formed being provided with complementary rigid association means.

According to one embodiment, the assembly also comprises a removable closure system such as a removable cap for sealing the bag-neck piece assembly after the bag has been attached to the neck piece but before the bag is filled. of liquid

• on dispose de l'ensemble de moyens tel qu'il vient d'être décrit, le sac étant vide de liquide et on dispose de liquide à conditionner ;
• on associe de façon rigide et étanche le sac vide de liquide à la pièce formant col ;
• on associe de façon rigide et étanche la pièce formant col - à laquelle est associé de façon rigide le sac - au couvercle, le sac étant placé à l'intérieur du couvercle ; et on dispose le sac à l'intérieur du récipient ;
• puis, on associe de façon rigide et étanche le récipient et le couvercle ;
• puis, on emplit le sac avec le liquide par la pièce formant col et l'ouverture du sac ;
• puis, on associe de façon rigide et étanche la coiffe à la pièce formant col.

According to a fourth aspect, the subject of the invention is a method for packaging a liquid such as a pressurized beverage in a drum specially adapted for storing and withdrawing this liquid, as described, in which :

• the set of means as described above is available, the bag being empty of liquid and the liquid to be conditioned is available;
• the empty bag of liquid is rigidly and sealingly associated with the neck piece;
• the neck member - to which the bag is rigidly associated - is associated rigidly and tightly with the lid, the bag being placed inside the lid; and the bag is placed inside the container;
• then, it is associated rigidly and tightly container and lid;
• then, the bag is filled with the liquid by the neck piece and the opening of the bag;
• then, it associates rigidly and tightly the cap to the neck piece.

According to one embodiment, once the container and the lid associated rigidly and tightly and the bag filled with the liquid, is injected inside the barrel and outside the bag a gas overpressure to compress the bag filled with liquid, the closure means of the hole closing it.

According to one embodiment in which the barrel in the assembled state and empty of liquid comprises a removable closure system, once the sac-piece forming collar assembly - the bag having been fixed to the neck piece but not yet filled with liquid - this assembly is closed by means of a removable closure system, in order to maintain the sterility of the bag and, before the bag is filled with liquid, the capping system is removed.

• la figure 1 est une vue en élévation d'un fût selon l'invention, à l'état non complètement assemblé, le sac n'étant que représenté partiellement et symboliquement,
• la figure 2 est une vue en perspective de dessus du fût représenté sur la figure 1, le sac n'étant pas représenté,
• la figure 3 est une vue en perspective de dessus du couvercle du fût, les moyens d'obturation étant enlevés,
• la figure 4 est une vue en perspective d'une pièce formant les moyens d'obturation étanche du trou d'injection de gaz en surpression à l'intérieur du fût et à l'extérieur du sac,
• la figure 5 est une vue en élévation de la pièce formant col du fût,
• la figure 6 est une vue en perspective de l'intérieur de la pièce formant col du fût,
• la figure 7 est une vue en élévation de la coiffe du fût,
• la figure 8 est une vue en perspective depuis l'intérieur de la coiffe du fût.

The invention is now described using the drawings (which are not on the same scale), in which:

• the figure 1 is an elevational view of a drum according to the invention, in the not completely assembled state, the bag being only partially and symbolically represented,
• the figure 2 is a perspective view from above of the barrel represented on the figure 1 the bag is not shown,
• the figure 3 is a perspective view from above of the lid of the barrel, the shutter means being removed,
• the figure 4 is a perspective view of a piece forming the sealing means of the gas injection hole in overpressure inside the barrel and outside the bag,
• the figure 5 is an elevational view of the drum neck piece,
• the figure 6 is a perspective view of the inside of the barrel neck piece,
• the figure 7 is an elevation view of the barrel cap,
• the figure 8 is a perspective view from the inside of the barrel cap.

The barrel 1 according to the invention, for single use especially domestic, is specially intended for the storage and withdrawal of a drink under pressure such as beer or lemonade.

The invention relates to the barrel 1 in its various possible states, including the assembled state and empty of liquid and the assembled state and filled with liquid and ready for use. It also relates to all the means to be associated rigidly to form such a barrel 1. Finally, it relates to the method of packaging a liquid such as a drink under pressure in such a barrel 1.

One such 1 was based on the teaching of the document WO 2008/132328 accessible to the person skilled in the art, while having a structure which makes it possible to envisage an easy, economical, efficient and industrializable production, suitable for a drum 1 for single domestic use and giving any guarantee in terms of safety, particularly reuse. or opening the drum 1.

The barrel 1 is made from a set of means (or parts) associated with each other rigidly. Once rigidly associated with each other, these parts form the barrel 1 which has a general axis of symmetry 1a.

The word "axial" must be understood in relation to the axis 1a. The word "transverse" should be understood as meaning perpendicular, orthogonal, substantially perpendicular or substantially orthogonal to the axis 1a.

In its position of use, the barrel 1 is placed with the axis 1a vertical or substantially vertical.

The drum 1 comprises in the first place a bag 2, waterproof and flexible, adapted to contain the liquid, to withstand the internal or external pressure that can be exerted on it. The bag 2 is provided with an opening 3 having an edge 3a, opening 3 by which it can respectively ensure its filling with the liquid or the withdrawal of the liquid that it contains.

The bag 2 consists, for example, of two analogous sheets of generally rectangular or pseudo-rectangular shape, disposed facing each other and welded together at or near their lateral edges, with the exception of the opening 3 or a section of sheath closed at one end and whose other open end forms the opening 3.

The plastic material constituting the bag 2 is chosen so as to be compatible with the liquid to be stored. It is also chosen so that the bag 2 is sufficiently flexible, resistant to pressure and waterproof. For example, it is chosen to have a selective seal: sealed from the inside out to the carbon dioxide and permeable to oxygen to some extent from the outside to the inside.

For the application of the barrel 1 envisaged, the bag 2 has a capacity that can be between about 5 liters to 15 liters.

The barrel 1 comprises secondly a container 4 adapted to receive the bag 2.

The container 4 has a rigidity capable of withstanding the pressure that may exist inside the barrel 1.

The container 4 has a side wall 5 limiting on one side an opening 6. This side wall 5 extends axially and, in the embodiment shown, it is generally cylindrical slightly flared towards the opening 6.

By "cylindrical" is meant an effectively cylindrical shape or a pseudo-cylindrical or prismatic or pseudo-prismatic shape.

The container 4 also comprises, on the opposite side to the opening 6, an end wall 7, extending at least substantially in a transverse plane.

Such a container 4 defines a cavity 8, interior.

The drum 1 comprises thirdly a lid 9 adapted to close the container 4 on the side of its opening 6.

The lid 9 has a rigidity capable of withstanding the pressure that may exist inside the barrel 1.

The cover 9 has a side wall 10 limiting on one side an opening 11. This side wall 10 extends axially and, in the embodiment shown, it is generally cylindrical slightly flared towards the opening 11.

The cover 9 also has, on the opposite side to the opening 11, an end wall 12, extending at least substantially in a transverse plane.

Thus, the lid 9 has a generally cap-like shape more or less flattened or on the contrary more or less hollow, depending on the embodiments.

Such a cover 9 defines a cavity 13, interior.

The word "interior" must be understood as being in or to the cavity 8 or the cavity 13 or the cavity formed by the two cavities 8 and 13.

The container 4 and the lid 9 are, in the embodiment considered made of plastic. Where appropriate, they comprise stiffening reliefs.

In the embodiment shown in the drawings, the container 4 and the lid 9 have an axial dimension similar or of the same order of magnitude. In other embodiments, the axial dimension of the container 4 is greater than that of the lid 9 and the latter may have a flattened crown shape. On the other hand, it is possible to provide that the cover 9 has a given axial dimension, while the container 4 can have one of a few given axial dimensions, depending on the capacity of the bag 2. Thus, while the bag 2 may have a capacity in the range indicated above, as required, the lid 9 and the other constituent parts of the barrel 1 have constant given dimensions, with the exception of the tank 4 which has a greater or smaller axial dimension according to that the bag 2 has a greater or lesser capacity. This constructive arrangement makes it possible to rationalize the manufacture of the barrels while ensuring a diversity of capacity.

The slightly flared shape of the container 4 and the lid 9, towards the openings 6 and 11, respectively, makes it possible to stack the containers 4 and the covers 9 before their assembly. The containers 4 or lids 9 and stacked can be easily transported, the place of manufacture can without prejudice, be removed from the assembly site.

The openings 6 and 11 are of similar dimensions, so as to be placed in reciprocal coincidence, the container 4 and the lid 9 of a barrel 1 being head to tail. The dimensions of the container 4 and the lid 9 are determined so that once associated, they form an inner cavity 8 + 13 of shape and volume adapted to the shape and capacity of the bag 2.

Towards the openings 6 and 11, the container 4 and the lid 9 are provided with means 14 of complementary rigid association with sealing. These means are able to be rigidly associated with sealing, the openings 6 and 11 being in mutual coincidence. According to the embodiment envisaged, the means 14 of rigid association ensure a rigid irreversible association, so that the container 4 and lid 9 are, once the barrel 1 constituted, rigidly and irreversibly associated.

The cover 9 has, in its end wall 12, an orifice 15.

The orifice 15 is able to face the opening 3 of the bag 2 and in communication with it.

The orifice 15 is limited laterally by a collar 16 of generally cylindrical shape, extending axially projecting from the end wall 12 of the cover 9, towards the outside thereof.

On the other hand, according to the embodiment shown, the end wall 12 of the cover 9 has a peripheral groove 17 extending towards the inside of the cover 9 and thus open towards the outside thereof.

In the embodiment shown, a hole 18 is provided on the end wall 12 of the cover 9 in the vicinity of the orifice 15.

This hole 18 is limited by an end piece 18a, extending outwards, suitable for mounting a pipe for injecting a gas under pressure. The hole 18 and its tip 18a form a kind of pacifier.

The hole 18 is intended to inject inside the barrel 1, that is to say in the cavity 8 + 13, but outside the bag 2, a gas under pressure and this in order to compress the bag 2 and the liquid it contains.

It is understood that according to other variants, it may be provided not a single hole 18, but several holes 18. Such a hole 18 may be provided not on the end wall 12 of the cover 9, but on its side wall 10. It may also be provided that a hole 18 is not on the lid 9, but on the container 4, or - in the case of several holes 18 - on the lid 9 and the container 4.

In the embodiment shown, the flange 16, the end piece 18a and the closure means 20 are all set back from a plane formed by the outer face of an annular peripheral edge 12a of the end wall 12, limiting a portion hollow 12b of this wall, towards the center of which is the groove 17. With this structure, it is possible to have a flange 16 having an axial dimension sufficient for effective irreversible rigid maintenance, without the flange 16 protrudes from said plane, which would be an inconvenience for the stack of lids 9 before mounting and the preserving the integrity of the collar 16. This structure also makes it possible to stack drums assembled on each other.

The barrel 1 comprises fourthly sealing means 19, able to be operated from the outside of the barrel and able, selectively, to seal with sealing or on the contrary to open the hole 18.

These means 19 are further able, when they close the hole 18, to maintain inside the barrel 1 the overpressure that prevails, in the manner of a non-return valve.

Of course, the number and the arrangement of the means 19 are adapted to the number and the arrangement of the hole or holes 18.

According to the embodiment shown, the means 19 are a piece 19a deformable plastic material, able to be deformed when subjected to a force corresponding to a known pressure exerted on it. In doing so, the piece 19a can be manipulated so as to be deformed from the outside of the barrel 1, in response to the injection, inside the barrel 1, of the gas under pressure by the hole 18 provided for this purpose. .

The piece 19a opens the hole 18 when the inside of the barrel 1 is injected with gas under pressure via the hole 18. Conversely, the piece 19a closes the hole 18 when the injection is stopped inside the barrel. barrel 1 of the overpressured gas or when the inside of the barrel 1 is overpressure.

The part 19a comprises a deformable portion forming a valve intended to be located against the inner face of the end wall 12 of the cover 9, where the hole 18 is located, facing this hole 18.

It is also provided that on the one hand the means 19 and on the other hand and in this case the cover 9 - and more specifically its end wall 12 where the hole 18 is formed - are provided with means 20 of complementary rigid association .

Such rigid association means 20 may comprise, in the embodiment shown, two sets each comprising a projection 20a and a complementary recess 20b, one - for example the projection 20a - being provided on the part 19a and the other - the hollow 20b, formed by a hole - being formed on the end wall 12 of the cover 9.

These two projections 20a - hollow 20b are located on both sides of the hole 18 and close to it.

Of course, it can be provided three, four ... 20a-recessed assemblies 20b - hollow or a linearly extended set surrounding a hole 18.

Thus, thanks to the means 20 of rigid association, the means 19 are held rigidly associated with the cover 9 by contact and interlocking force.

The structure which has just been described is adapted in the case where it is provided

It is understood that according to other variants, there may be provided several holes 18 or one or more holes 18 on the side wall 10 of the lid 9 or on the container 4 or on the lid 9 and the container 4.

The barrel 1 comprises fifthly a neck member 21, hollow from one side axially, constituting a passage of generally cylindrical shape. This piece 21 is made of plastic.

The neck piece 21 is structurally distinct from the cover 9. It should be understood that this is a separate part of the cover 9.

The part 21 forming a neck has a side wall 22 and an inner end wall 23 in the form of a disk which is rigidly and sealingly associated with the edge 3a of the opening 3 of the bag 2, by welding or gluing.

The outer lateral face 22a of the side wall 22 of the part 21 forming the neck and the inner side face 16a of the conjugate flange 16 limiting the orifice 15 of the cover 9 are provided with means 24 of complementary rigid association with sealing.

Thus, the part 21 forming neck and the cover 9 can be rigidly associated with sealing.

In this situation, the piece 21 forming a collar extends outwardly from the cover 9 and the barrel 1 and being located opposite the orifice 15 of the cover 9 and in communication with it by the axial recess constituting a passage which she forms. The part 21 forming a collar passes through the lid 9 through the orifice 15. Finally, its inner end - namely the inner end wall 23 - is located inside the lid 9, abutting against the face inside the end wall 12.

The means 24 of rigid complementary association of the part 21 forming neck and cover 9 provide an irreversible rigid association, so that the part 21 forming neck and the cover 9 are rigidly and irreversibly associated. For example, the means 24 comprise mating surfaces held rigidly associated by contact and interlocking.

The barrel 1 comprises sixthly a cap 25.

The cap 25 comprises a hollow cylindrical lateral body 26 supporting means 27a for closing the barrel and means 27b for withdrawing the liquid. Such means 27a, 27b may be the subject of various embodiments, in particular that described in the document WO 2008/132328 .

The internal lateral face 22b of the neck portion 21 and the outer mating side face 26a of the body 26 of the cap 25 are provided with complementary rigid coupling means 28 with sealing.

Thus, the neck portion 21 and the cap 25 can be rigidly associated with sealing.

The means 28 of complementary rigid association of the part 21 forming neck and the cap 25 provide an irreversible rigid association, so that the part 21 forming the neck and the cap 25 are rigidly and irreversibly associated. For example, the means 28 comprise mating surfaces held rigidly associated by contact and interlocking.

In this situation, a laterally protruding, disc-shaped outer end portion 29a of the body 26 of the cap 25 may abut against a laterally and disc-shaped outer end portion 29b of the sidewall 22 of the piece 21 forming neck. In this situation, the outer end portion 29b has a limit stop function.

Part 29b also tends to flare after interlocking so as to ensure an irreversible assembly.

The outer end portion 29b may have another function while the bag 2 has been attached to the neck piece 21, but it is not yet filled with liquid. Indeed, it is possible, once the set bag 2 - piece 21 formed neck, to seal this set by means, sixth, of a removable cap or other removable closure system, to maintain the sterility of the bag until it is filled with liquid.

This constructive arrangement allows to prepare in a place of manufacture the bag 2 - piece 21 forming collar, then to transport it without risk of contamination on another site for the finalization of the assembly of the drum 1 and its filling.

• le sac 2 ;
• le récipient 4 et le couvercle 9 fermant le récipient 4 et pourvu de la collerette 16, associés rigidement, irréversiblement et avec étanchéité, et formant une cavité 8 + 13 dans laquelle se trouve le sac 2 ;
• la pièce 21 formant col structurellement distincte du couvercle 9, et associée à lui rigidement, irréversiblement et avec étanchéité en étant logée dans l'orifice 15, et à laquelle est associée rigidement et avec étanchéité le sac 2 ;
• la coiffe 25 comprenant les moyens 27a de fermeture du fût 1 et les moyens 27b de soutirage du liquide, associée à la pièce 21 formant col rigidement, irréversiblement et avec étanchéité en étant logée dans elle ;
• au moins un trou 18, ménagé sur le récipient 4 et/ou le couvercle 9 pour l'injection à l'intérieur du fût 1 et à l'extérieur du sac 2 un gaz en surpression afin de comprimer le sac 2 emplit de liquide ;
• et des moyens 19 d'obturation aptes, de façon sélective, à obturer avec étanchéité ou à ouvrir le au moins un trou 18 et, lorsqu'ils obturent le au moins un trou 18 à maintenir à l'intérieur du fût 1 la surpression qui y règne,
• et le cas échéant, le système de bouchage amovible précédemment mentionné.

Thus, the barrel 1 in the assembled state and empty of liquid comprises:

• the bag 2;
• the container 4 and the lid 9 closing the container 4 and provided with the flange 16, associated rigidly, irreversibly and with sealing, and forming a cavity 8 + 13 in which the bag 2 is located;
• the part 21 forming neck structurally distinct from the cover 9, and associated with it rigidly, irreversibly and sealingly being housed in the orifice 15, and to which is associated rigidly and with sealing the bag 2;
• the cap 25 comprising the means 27a for closing the barrel 1 and the means 27b for withdrawing the liquid, associated with the piece 21 forming a neck rigidly, irreversibly and sealingly being housed in it;
• at least one hole 18 provided on the container 4 and / or the lid 9 for the injection inside the barrel 1 and outside the bag 2 a gas under pressure to compress the bag 2 filled with liquid;
• and closure means 19 which can selectively seal off or open the at least one hole 18 and, when they close the at least one hole 18 to be held inside the barrel 1, the overpressure which there reigns,
• and where appropriate, the previously mentioned removable closure system.

As indicated, in this state, the drums 1 can be stacked.

A rigid, irreversible and sealed combination of two parts constituting the barrel 1 can be performed functionally similar to a force sink, the invention also including other ways of doing. For example, it is possible to first put the two parts in their appropriate relative position and then to combine them rigidly, irreversibly and sealingly by welding.

The irreversibility of the rigid combination of two parts is understood when one exerts on these two parts of disassembly forces which for any user would be normal or because in the event of an attempt of disassembly, the two parts will be sufficiently deteriorated to prevent re-use for a drum.

It is possible to provide interposed between two parts reported sealing means.

The seal in question is obviously not absolute, but means a seal at least just sufficient for the domestic use of the barrel 1. According to the fluids concerned, this seal is a liquid tightness or gases.

In another state, the barrel 1 is assembled and filled with liquid, ready for use. In this case, the bag 2 is filled with the liquid in question, such as a drink under pressure, while a gas under pressure is inside the barrel 1 and outside the bag 2 in order to compress the bag. 2 filled with liquid.

In this situation, the barrel 1 can be arranged for the withdrawal of liquid with the cap 25 in the lowest position, the end wall 7 being in the uppermost position. The opening of the cap 25 with the withdrawal means 27b is in the lower position and directed downwards. However, thanks to the means 19 for sealing, it is possible to withdraw the liquid, avoiding any suction phenomenon. This withdrawal is possible, without the need to add gas under pressure, by gravity.

In an embodiment in which the barrel 1 in the assembled state and empty of liquid comprises a removable closure system, this removable closure system of the bag 2 - piece 21 forming a neck assembly is removed before the bag 2 is filled with liquid.

The method of packaging a liquid such as a drink under pressure in a drum 1 specially adapted for storing and withdrawing this liquid, as described, is as follows.

The set of means constituting the barrel 1, previously described, is available, the bag 2 being empty of liquid.

There is also liquid to be packaged.

The bag 2, empty of liquid, is rigidly and sealingly associated with the piece 21 forming a neck.

Furthermore, the piece 21 forming a neck - which is then rigidly associated with the empty bag 2 - is associated rigidly, irreversibly and tightly with the lid 9, the bag 2 being placed inside the lid 9. this operation by threading the piece 21 forming a neck in the orifice 15 of the lid, from the inner cavity 13 thereof and is proceeded to a snap fit. On the other hand, the bag 2 is placed inside the container 4.

Then, the container 4 and the cover 9 are rigidly, irreversibly and tightly coupled together, the bag 2 thus being housed in the cavity 8 + 13. This operation is carried out by force-fitting.

Then, the bag 2 is filled with the liquid by the neck piece 21 and the opening 3 of the bag 2.

Then, it is associated rigidly, irreversibly and tightly the cap 25 to the piece 21 forming neck. This operation is carried out from the outside of the barrel 1, by making a forced fit

On the other hand, once the container 4 and the lid 9 associated rigidly, irreversibly and tightly and the bag 2 filled with the liquid, is injected inside the barrel 1, in the cavity 8 + 13, and the outside of the bag 2, via the at least one hole 18, a gas in overpressure to compress the bag 2 filled with liquid, the means 19 for closing the at least one hole 18 closing it.

In the case of a barrel 1 in the assembled state and empty of liquid comprising a removable clogging system, once the bag 2 - piece assembly 21 formed collar - the bag 2 having been attached to the piece 21 forming a collar but not yet filled with liquid -, this set 2 + 21 is closed by means of a removable closure system, in order to maintain the sterility of the bag (2) and by the fact that before the bag 2 is filled with liquid , we remove the closure system.

As has been understood, the constituent parts of the drums can be manufactured at certain sites, easily transported, and then assembled at other sites.

Claims (29)

1. A cask (1) in the assembled state and empty of liquid, especially suitable for storing and drawing a liquid such as a draught beverage, comprising:

   - a sealed and flexible bag (2), able to contain the liquid, to withstand an internal or external pressure exerted thereon, provided with an opening (3) through which the liquid contained therein can be respectively filled or drawn;

   - a container (4) receiving the bag (2), having a stiffness capable of withstanding the pressure existing inside the cask, and comprising an opening (6) adapted to the loading of the bag (2); and a lid (9) having the general shape of a cap, which closes the container (4) on the opening (6) side thereof, having a stiffness capable of withstanding the pressure existing inside the cask (1), comprising on one side an opening (11) and having, in an end wall (12) on the apposite side, an orifice (15) facing the opening (3) of the bag (2) and in communication therewith, the contained (4) and the lid (9) provided with complementary means (14) for stiff sealing association being stiffly and sealingly associated, with the two openings (6, 11) thereof bering matched, and a generally cylindrical neck extending outwardly from the lid (9) and the cask (1) and located apposite the orifice (15) of the lid (9) and in communication therewith;

   - a cover (25) comprising a hallow cylindrical side body (26) supporting means (27a) for closing the cask and means (27b) for drawing the liquid, with the inner side face (22b) of the neck and the mating outer side face (26a) of the body (26) of the cover (25) provided with complementary means (28) for stiff sealing association being stiffly and sealingly associated

   characterized in that:

   - the neck is a part (21) structurally different from the lid (9);

   - the outer side face (22a) of the part (21) forming the neck and the mating inner side face (16a) of the opening of the lid (9) are provided with complementary means (24) for stiff sealing association, the part (21) forming the neck and the lid (9) being stiffly and sealingly associated, the part (21) forming the neck pasting through the lid (9) and the inner end thereof being located inside the lid (9);

   - the bag (2) is stiffly and sealingly associated with the part (21) forming the neck towards the inner end thereof,

   - at least one hole (18), arranged on the container (4) and / or the lid (9) is able to allow the injection of a pressurized gas into the cask (1) and outside the bag (2) to compress the bag (2);

   - tight closing means (19), suitable for being actuated from outside the cask (1) are capable of selectively sealingly closing or opening the hole (18) and, when they close the hole (18) to hold the overpressure inside the cask (1), with the closing means (19) and the container (4) and / or the lid (9) wherein the hole (18) is formed being provided with complementary means (20) for stiff sealing association.
2. A cask (1) in the assembled state and empty of liquid, according to claim 1, characterized in that the complementary means (24) for stiff sealing association of the part (21) forming the neck and the lid (9) provide an irreversible stiff association, with the part (21) forming the neck and the lid (9) being stiffly and irreversibly associated.
3. A cask (1) in the assembled state and empty of liquid, according to any one of claims 1 and 2, characterized in that the complementary means (24) for stiff sealing association of the part (21) forming the lid and the neck (9) comprise mating surfaces held in stiff association by contact and press-fitting.
4. A cask (1) in the assembled state and empty of liquid according to any one of claims 1 to 3, characterized in that the orifice (15) of the lid (9) is laterally limited by a flange (16) having a generally cylindrical shape, protruding from the end wall of the lid (9) towards the outside thereof, and the inner side face (16a) of the flange (16) of which is provided with means (24) for stiff association, with the part (21) forming the neck
5. A cask (1) in the assembled state and empty of liquid according to any one of claims 1 to 4, characterized in that the end wall (12) of the lid (9) comprises a groove (17) extending towards the inside of the lid (9).
6. A cask (1) in the assembled state and empty of liquid according to any one of claims 1 to 5, characterized in that the part (21) forming the neck, structurally different from the lid (9), comprises on the one hand a side wall (22) having a generally cylindrical shape, the outer side face (22a) of which is provided with means (28) for stiff association with the lid (9) and the inner side face (22b) of which is provided with means (14) for stiff sealing association with the cover (25) and, on the other hand, a disc-shaped inner end wall (23) abutting against the inner face of the end wall (12) of the lid (9) and with which the bag (2) is stiffly and sealingly associated by the edge (3a) of the opening (3) thereof.
7. A cask (1) in the assembled state and empty of liquid according to any one of claims 1 to 6, characterized in that the part (21) forming the neck, structurally different from the lid (9), comprises a side wall (22) having a generally cylindrical shape and a disc-shaped inner end wall (23) with which the edge (3a) of the opening (3) of the bag (2) is stiffly and sealingly associated buy welding or gluing.
8. A cask (1) in the assembled state and empty of liquid according to any one of claims 1 to 7, characterized in that the complementary means (28) for stiff sealing association of the part (21) forming the neck and the cover (25) comprises mating surfaces held stiffly associated by contact and press-fitting.
9. A cask (1) in the assembled state and empty of liquid according to any one of claims 1 to 8, characterized in that the body (26) of the cover (25) ends in a laterally protruding disc-shaped outer end portion (29a), abutting against a laterally protruding disc-shaped outer end portion (29b) of the side wall (22) of the part (21) forming the neck.
10. A cask (1) in the assembled state and empty of liquid according to any one of claims 1 to 9, characterized in that the at least one hole (18) is arranged in the lid (9).
11. A cask (1) in the assembled state and empty of liquid, according to claim 10, characterized in that the at least one hole (18) is arranged in the end wall (12) of the lid (9) in the vicinity of the opening (15) thereof.
12. A cask (1) in the assembled state and empty of liquid, according to any one of claims 1 to 11, characterized in that the at least one hole (18) is limited by a trip (18a) extending outward, suitable for the mounting of a pipe for injecting a pressurized gas.
13. A cask (1) in the assembled state and empty of liquid, according to any one of claims 1 to 12, characterized in that the hole (18) sealing means (19) is a part (19a) made of deformable plastic material, capable of deforming when subjected to a force corresponding to a known pressure exerted thereon, elastically actuated from outside the cask (1) in response to the injection, inside the cask, of the pressurized gas through the at least one hole (18), said part (19a) of the closing means (20), on the one hand, opening the hole (18) when pressurized gas is injected inside the cask, on the other hand, closing the hole (18) when the injection of the pressurized gas inside the cask (1) stops or when the cask (1) is pressurized.
14. A cask (1) in the assembled state and empty of liquid, according to claim 13, characterized in that the deformable part (19a) of the means (19) sealing the hole (18) comprises a deformable portion forming a valve located against the inner face of the wall where the at least one hole (18) is located, opposite such at least one hole (18).
15. A cask (1) in the assembled state and empty of liquid, according to any one of claims 13 and 14, characterized in that the complementary means (20) for stiff sealing association of the deformable part (19a) of the closing means (19) and the wall where the at least one hole (18) is located comprise at least one protrusion-depression assembly (20a, 20b) held stiffly associated by contact and press-fitting.
16. A cask (1) in the assembled state and empty of liquid, according to any one of claims 1 to 15, characterized in that the complementary means (14) for stiff sealing association of the container (4) and the lid (9) provide a stiff irreversible association, with the lid (9) and the container (4) being stiffly and irreversibly associated.
17. A cask (1) in the assembled state and empty of liquid, according to any one of claims 1 to 16, characterized in that the container (4) on the one hand, the lid (9) on the other hand, comprise, on the one hand, a side wall (5, 10) limiting the opening (6, 11) thereof, axially extending, having a generally cylindrical or prismatic sightly flared shape towards the opening, on the other hand, an end wall (7, 12) extending in a transverse plane.
18. A cask (1) in the assembled state and empty of liquid according to any one of claims 1 to 17, characterized in that the container (4) and / or the lid (9) comprise stiffening reliefs.
19. A cask (1) in the assembled state and empty of liquid, according to any one of claims 1 to 18, characterized in that the container (4) and the lid (9) have similar or like axial dimensions.
20. A cask (1) in the assembled state and empty of liquid, according to any one of claims 1 to 19, characterized in that the container (4), the lid (9), the bag (2) and the part (21) forming the neck are made of plastic material.
21. A cask (1) in the assembled state and empty of liquid, according to any one of claims 1 to 20, characterized in that the bag (2) has a capacity of abort 5 litres to 15 litres.
22. A. cask (1) in the assembled state and empty of liquid, according to any one of claims 1 to 21, characterized in that, when the bag (2) - part (21) forming the neck are assembled, the bag (2) having been attached to the part (21) forming the neck, but not yet filled with liquid is closed by a removable closing system such as a removable capping in order to keep the bag (2) sterile until the moment it is filled with the liquid.
23. A cask (1) in the assembled state and filled with liquid, ready for use, comprising a cask (1) in the assembled state according to any one of claims 1 to 21, with the bag (2) being filled with a liquid such as a pressurized beverage, a pressurized gas being present inside the cask (1) and outside the bag (2) to compress the bag (2) filled with liquid.
24. A cask (1) in the assembled state and filled with liquid, ready for use, as claimed in claim 23, with the cask (1) being in the assembled state and empty of liquid according to claim 22, characterized in that the removable closing system of the bag (2) - part (21) forming the neck assembly is removed before the bag (2) is filled with the liquid.
25. A set of means to be stiffly associated to form a cask (1) according to any one of claims 1 to 21, comprising:

    - a sealed and flexible bag (2), capable of containing the liquid, of withstanding an inner or outer pressure which can be exerted thereon, provide with an opining (3) through which the liquid contained therein can be respectively filled or drawn;

    - a container (4) adapted to receive the bag (2), having a stiffness adapted to withstand the pressure that may exist inside the cask and having an opening (6) adapted to the loading of the bag (2); and a lid (9) having the general shape of a cap, able to close the container (4) on the opening (6) side thereof, having a stiffness adapted to withstand the pressure that may exist inside the cask, having on one side an opening (11) and having, in an opposite end wall (12) an orifice (15) adapted to be opposite the opening of the bag (2) and in communication therewith; the container (4) and the lid (9) provided with complementary means (14) for stiff sealing association, being adapted to be stiffly and sealingly associated, with the two openings (6, 11) thereof being matched;

    - a part (21) forming the neck, structurally different from the lid (9), having a generally cylindrical shape, the outer side face (22a) of the part (21) forming the neck and the mating inner side face (16a) of the orifice (15) of the lid (9) being provided with complementary means (24) for stiff sealing association, with the part (21) forming the neck and the lid (9) being adapted to be stiffly and sealingly associated, with the part (21) forming the neck being adapted to pass through the lid (9), with the inner end thereof being adapted to be located inside the lid (9), with the part (21) forming the neck being adapted to extend outwardly from the cover (9) and the cask lid and to be located opposite the orifice (15) of the lid (9) and in communication therewith, with the bag (2) being able to be stiffly and sealingly associated with the part (21) forming the neck towards the inner end thereof;

    - a cover (25) comprising a hollow cylindrical side body (26) supporting means (27a) for closing the cask and means (27b) for drawing the liquid, with the inner side face (22a) of the part (21) forming the neck and the mating outer side face (26a) of the cover (25) body provided with complementary means (28) for stiff sealing association, being adapted to be stiffly and sealingly associated;

    - at least one hole (18), arranged in the container (4) and / or the lid (9), adapted to allow a pressurized gas to be injected into the cask (1) and outside the bag (2) to compress the bag (2);

    - tight closing means (19), adapted to selectively seal or open the hole (18) and, when these close the hole (18) to hold the overpressure existing inside the cask (1), with the closing means (19) and the container (4) and / or the lid (9) where the hole (18) is formed being provided with complementary means (20) for stiff sealing association.
26. An assembly according to claim 25, with the cask (1) being in the assembled state and empty of liquid according to claim 22, characterized in that it also comprises a removable closing system such as a removable capping for closing the bag (2) - part (21) forming the neck assembly after the bag (2) has been attached to the part (21) forming the neck but before the bag (2) is filled with liquid
27. A method for packaging a liquid such as a pressurised beverage in a cask (1) especially adapted to storing and drawing such liquid according to any one of claims 1 to 21, wherein:

    - the set of means according to claim 23 is made available, with the bag (2) being empty of liquid and the liquid to be packaged is made available;

    - the bag (2) empty of liquid is stiffly and sealingly associated with the part (21) forming the neck;

    - the part (21) forming the neck - which is stiffly associated with the bag (2) - is stiffly and sealingly associated with the cover, the bag (2) being placed inside the lid (9); and the bag (2) is plated inside the container (4);

    - the container (4) and the lid (9) are then stiffly and sealingly associated;

    - the bag (2) is then filled with the liquid through the part (21) forming the neck and the pening (3) of the bag (2);

    - the cover (25) and the part (21) forming the neck are then stiffly and sealingly associated.
28. A method according to claim 27, characterized in that once the container (4) and the lid (9) are stiffly and sealingly associated and the bag (2) is filled with the liquid, a pressurized gas is injected inside the cask (1) and outside the bag (2) to compress the bag (2) filled with the liquid, with the means closing the hole (18) closing the latter.
29. A method according to any one of claims 27 and 28, wherein the cask (1) in the assembled state and empty of liquid according to claim 22, characterized in that once the bag (2) - part (21) forming the neck are assembler - the bag (2) having been attached to the part (21) forming the neck, but not yet filled with liquid - such assembly (2 + 21) is closed by means of a removable closing system in order to keep the bag (2) sterile and in that the closing system is removed before the bag (2) is filled with liquid.

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