EP3019420B1 - Pouch reservoirs for casings used to dispense pressurised products and casings comprising same - Google Patents

Description

Field of the invention

The present invention relates to pocket reservoirs for pressurized product dispenser cases and housings comprising such pocket reservoirs. It applies to distributor casings of aerosol products, liquid or pasty under pressure comprising a bag reservoir containing the product to be dispensed and in particular to the refillable boxes.

Technological background.

The document EP 2488426 A1 relates to a refillable case comprising a bag filled with a product to be dispensed and fixed on a dome provided with a diffuser, the dome being fixed by means of a threaded ring on a sealed casing intended to be filled with a gas under pressure .

The document EP 2551215 A1 relates to a method of producing a charging device comprising a bag containing a product to be diffused for a rechargeable diffuser housing and a charging device adapted to this method.

The method comprises the steps of making the bag open on one side, filling the bag by means of a measuring device and then fixing the bag on a valve. After the step of fixing the pocket on the valve, the method comprises a step of assembling the valve with a cover for closing the housing, from below the lid.

The device pocket refill, comprising a valve and a pocket includes a lid adapted to a fixing of the valve under the lid, filled pocket. The lid comprises a ring surrounding a circular housing for receiving a cup integral with the valve.

The document WO2013 / 076081 A1 relates to a rechargeable diffuser housing closure device comprising a valve mounted in a cup and a connecting dome between the cup and an upper rim of a container of the housing and a diffuser housing comprising it.

The rechargeable diffuser box closure device is such that the connecting dome comprises one or more support edges of a peripheral bead of the cup and a support flange on the upper rim, the device further comprising a cover, provided with an access opening to the valve and adapted to cap the connecting dome and to attach sealingly on the container. Other examples are described in the documents: FR2785594 , EP0765822 , WO93 / 23313 , EP0776834 and JP2013082478 .

These documents in the name of the plaintiff are intended to make easier the realization of refillable diffuser housings having a pocket filled with a product to be broadcast. For such cases, the filling of the pocket and the ease of manufacture of refills can be further improved which is one of the objects of the present invention.

Brief description of the invention

The present invention relates to an improvement and to pocket or refill tanks for pressurized housings dispensing products and these boxes which has on the one hand the advantage of facilitating the manufacture of these tanks or refills and secondly to allow better empty pockets when distributing the product they contain.

To this end, the present invention proposes a pocket container for a pressure distributor box according to claim 1.

This embodiment has the first advantage of securing the pocket to the dome and not the valve which facilitates the filling of the pocket and the handling of the refill or tank.

The base is advantageously constituted by a continuous wall on which the inner wall of the neck of the pocket is applied, the continuous wall having a circular central section and lateral extensions refined so as to provide a sealed gluing surface of the pocket.

According to the invention, the receiving bowl of the valve cup comprises a peripheral wall provided with a projecting edge forming a crimping bead of a flange of the cup.

According to an advantageous embodiment, the pocket reservoir comprises an anti-crushing device of the pocket.

More particularly, the anti-crushing device comprises a plunger element inserted in the pocket and a retaining plate of the device housed in the bowl.

Advantageously, the plunger element comprises two blades distant and offset laterally.

According to a particular embodiment, the blades are provided with complementary abutment profiles adapted to oppose an overlapping of the blades on one another.

Advantageously, the wafer is mounted by force in the bottom of the bowl.

The invention also applies to a pressure distributor housing comprising a pocket reservoir and a housing body receiving the reservoir pocket.

The dome of the pocket reservoir is provided with a peripheral dome bearing flange on a rim of the housing body.

According to a particular embodiment, the pressure distributor housing comprises a dome clamping ring on the body of the housing which is provided with an annular sealing surface on the peripheral collar of the dome and the rim of the housing body.

The pocket reservoir of the invention may advantageously constitute a refill for a refillable case.

The invention further relates to a method of producing a pocket reservoir which comprises a step of welding the pocket on a base under the dome,
a filling step with the product to be dispensed from the pocket assembled with the dome,
a step of setting up the valve gate cup on the filled pocket dome.

Advantageously, the dome serves as holding member of the reservoir during filling of the pocket.

According to a particular embodiment, the cup is crimped on the dome on a post of a filling machine of the bag after said filling.

Brief description of the drawings.

• en figure 1: une vue perspective éclatée d'un boîtier rechargeable selon l'invention;
• en figure 2 : une vue en perspective de côté d'une recharge selon l'invention;
• aux figures 3A et 3B: des vues respectivement de côté et de dessous d'un élément plongeur selon un mode de réalisation de l'invention;
• en figure 4: une vue en perspective éclatée de la recharge de la figure 2;
• en figure 5: une vue de côté coupe de la recharge de la figure 2.

Other characteristics and advantages of the invention will become apparent on reading the following description of a nonlimiting exemplary embodiment of the invention with reference to the drawings which represent:

• in figure 1 an exploded perspective view of a rechargeable case according to the invention;
• in figure 2 : a side perspective view of a refill according to the invention;
• the Figures 3A and 3B views respectively from the side and from below of a plunger element according to one embodiment of the invention;
• in figure 4 : an exploded perspective view of the recharge of the figure 2 ;
• in figure 5 : a side view cut of the recharge of the figure 2 .

DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION

The figure 1 shows in exploded view a pressure distributor housing according to the invention. It comprises a tubular housing body 6 provided in its bottom with a gas filling valve 10, a safety relief valve 9 and in its upper part a threading 61 and a receiving opening. a pocket 3 of a pocket tank.

The housing receives according to the example shown a ring 7 provided with a thread 72 complementary to the thread of the housing body.

The ring 7 is intended to hold a lid member of the housing, to close the housing tightly and to withstand a pressure internal to the housing of ten bars.

The lid member of the housing comprises a dome 1 of the bag reservoir which receives a cup 2 provided with a valve 4 and which is integral with the bag 3 which will contain the product to be dispensed.

The device of the invention is advantageous in that the dome of the invention allows the use of standard cups and valves as known in standard pressurized pressure boxes with or without a pocket which avoids having to develop valves and specific cups.

The figure 2 represents the complete refill with its pocket 3 whose neck 31 is welded to a lower part of the dome 1.

The dome has a peripheral flange 14 which will be applied to an upper rim of the housing to close the housing.

Back to the figure 1 , the lower part of the dome 1 on which is welded the neck of the pocket is a base 11 for receiving and sealing the collar 31 of the pocket 3.

The base 11 which forms a tubular foot of the dome is constituted by a continuous wall perpendicular to the peripheral collar 14 and defining a central tubular opening. The outer face of the base receives the inner wall of the neck 31 of the pocket.

The continuous wall of the base has a central section of generally circular shape which is deformed on two radially opposite sides to form lateral extensions that are refined so as to provide a sealed sealing surface of the "sealing eye" pocket. .

Such a biconcave profile is known as suitable for making a weld or waterproof bonding of a pocket and in particular used for specific pocket valves.

The walls 31a, 31b of the pocket are pinched and glued as shown in FIG. figure 4 , the neck 31 between the plucked walls being welded or glued to the profile of the base 11.

Still according to the figure 4 , the dome 1 comprises in its upper part a bowl 12 for receiving the valve door cup.

The base 11 under the dome and the bowl 12 are in communication through a central hole for filling the bag and the outlet of the product.

A first advantage of this embodiment is that once the pocket secured to the dome, it is possible to fill the pocket by the central hole between the bowl 12 and the base 11, this hole allowing a large product flow due to its diameter before mounting the valve cup.

In this way it is not necessary to fill the bag through the valve against the direction as in the prior art, such an operation being slow and may deteriorate product characteristics, for example the viscosity of a grease, by altering its molecules during its passage in the valve against the direction.

When filling the pocket of the present invention, the dome which is larger in diameter than the pocket is a convenient means of gripping the pocket reservoir.

Similarly, the dome serves as a means of gripping and support when one wants to mount the valve cup on the dome once the filled bag to complete the manufacture of the pocket tank.

To assemble the cup on the dome in a sealed and pressure-resistant manner, the receiving cup of the valve-carrying cup comprises a peripheral wall provided with a projecting rim 13 as represented in particular in FIG. figure 4 and in section at the figure 5 . This edge forms a crimping bead of a flange 21 of the cup.

Such an assembly is here again similar to the cup assemblies of the known and non-refillable aerosol dispensers which is an advantage since the cup provided with its valve may be the same as for single-use cases without a pocket and therefore will not generate any cost. additional.

In order to manufacture a pocket reservoir according to the invention, a step is performed for gluing or welding the pocket on the base under the dome, then filling the pocket assembled with the dome with the product to be dispensed and setting up the cup valve door on the dome filled pocket.

It is therefore also not necessary to weld the bag under the cup, the dome ensuring the attachment of the bag which is still an advantage of the reservoir of the invention.

During these operations and in particular during the filling of the pocket, the dome serves as holding member of the reservoir.

Advantageously, the cup is crimped on the dome on a post of a filling machine of the bag after filling.

The pocket reservoir of the invention can serve as a pocket reservoir for a disposable housing and, in this case, the dome will for example be glued, welded or crimped on the body of the case. It can very advantageously serve as a refill for a rechargeable case as shown. In this case the reservoir is positioned on the housing and sealingly attached by means of the ring 7 screwed on the housing.

Once the dispenser box is assembled and pressurized with a gas between the wall of the housing and the pocket, a cover 8 is positioned on the dome to protect the valve. This cover can for example frictionally hold on a vertical wall 15 of the dome.

The pocket reservoir shown further comprises an anti-crushing device 5 of the pocket shown in FIGS. Figures 3A and 3B .

This device is useful in particular if the bag contains a pasty product such as a fat to be dispensed.

Indeed, for such a product, if the bag crashes during the output of the product, it may be that its crushing is done first in its upper part. In such a case the bag can be closed by throttling under pressure in the case while there is still product in the lower part of the bag.

The device described allows to always keep a passage in the center of the pocket for the product even in case of crushing of the pocket.

It comprises a plunger element 51 inserted in the pocket, as shown in particular in figure 5 , and a plate 52 for retaining the device housed in the bowl.

Back to the figure 3A , the plunger element comprises according to the example two blades 51a, 51b distant and offset laterally. This element is made of a flexible plastic material and according to the view from below of the figure 3B , the blades 51a, 51b are provided with complementary abutment profiles 53 adapted to oppose an overlapping of the blades on one another, particularly at the level of the lower free end of the blades which will be brought closer together. one of the other when the bag will empty under the pressure of the gas contained in the housing.

After a dispensing of product, when the pressure has stabilized in the housing, the blades resume a rest position spaced which restores volume in the pocket and prevents strangulation.

As represented in figure 3A , the plunger element comprises a plate 52 from which the blades 51a, 51b.

This wafer is received in the bowl 12 as shown in FIG. figure 4 . It should be noted that the position of the diver on the figure 1 is not exact in the sense that it is fully represented under the dome 1 while the blades 51a, 51b pass through the latter in the correct mounting position shown in FIG. figure 5 .

The wafer is mounted for example by force in the bottom of the bowl 12 or is fixed in any way to prevent the diver back in this bowl.

The main object of the pocket reservoir of the invention is to constitute a refill of refillable dispenser casing but may also be used for a disposable pocket dispenser for example if the steps of packaging the product to be dispensed in the pocket and of producing of the housing are carried out at remote sites or if these steps are shifted in time which requires temporary storage of filled pockets.

An important advantage of the invention is that the diameter of the pocket is limited only by the diameter of the dome to almost reach the internal diameter of the housing.

This is very advantageous compared with pocket dispensing devices whose housing comprises a dome-shaped neck on which the cup is crimped and where the bag must be of sufficiently small diameter or of a flexibility such that it can fit into the neck and can not be filled beforehand without there being a very substantial loss of volume of the product relative to the volume of the housing.

The invention is not limited to the description above but encompasses the variants remaining within the scope of the claims and in particular, the dome preferably made of plastic material may optionally be metallic.

Claims (14)

1. Pouch-type reservoir, for a container dispensing under pressure, comprising a dome (1), a dish (2) holding a valve (4) and a pouch (3), wherein the dome (1) receives the dish (2) provided with the valve (4) and is secured to the pouch (3), wherein the dome comprises a peripheral collar (14) suitable for being applied to a top rim of the container in order to close the container, wherein the bottom part of the dome (1) on which a neck (31) of the pouch is welded is a base (11) for the reception and sealed fixing of the neck (31) of the pouch (3), the external face of the base receiving the internal wall of the neck (31) of the pouch, said base (11), which forms a tubular foot of the dome, is formed by a continuous wall perpendicular to the peripheral collar (14) defining a central tubular opening of the dome, and wherein said dome receiving the dish comprises a bowl (12) for receiving the valve-holder dish, the base (11) and the bowl (12) being in communication through the central tubular opening for filling the pouch and discharging the product, the bowl of the dome comprising a peripheral wall provided with a projecting edge (13) forming a protrusion for crimping a collar (21) of the dish.
2. Pouch-type reservoir according to claim 1, for which the external face of the base (11) is formed by a continuous wall to which the internal wall of the neck (31) of the pouch is applied, the continuous wall having a circular central section and lateral extensions becoming thinner so as to offer a sealed bonding surface for the pouch.
3. Pouch-type reservoir according to either claim 1 or claim 2, comprising a device (5) for preventing crushing of the pouch.
4. Pouch-type reservoir according to claim 3, for which the anti-crushing device (5) comprises a plunger element (51) inserted in the pouch and a tip (52) for retaining the device housed in the bowl.
5. Recharge according to claim 3 or claim 4, for which the plunger element comprises two blades (51a, 51b) distant and offset laterally.
6. Pouch-type reservoir according to claim 5, for which the blades (51a, 51b) are provided with complementary stop profiles (53) suitable for opposing an overlapping of said blades on each other.
7. Pouch-type reservoir according to any of claims 3 to 6, for which the tip (52) is forcibly mounted in the bottom of the bowl (12).
8. Pouch-type reservoir according to any of the preceding claims, constituting a recharge for a rechargeable dispensing container.
9. Pressurised dispensing container comprising a pouch-type reservoir according to any of the preceding claims and a container body (6) receiving the pouch of the pouch-type reservoir.
10. Pressurised dispensing container according to claim 9, for which the dome (1) is provided with a peripheral collar (14) for bearing of the dome on an edge of the container body (6).
11. Pressurised dispensing container according to claim 10, comprising a ring (7) for clamping the dome on the body of the container provided with an annular surface (71) for sealed bearing on the peripheral collar of the dome and the edge of the housing body.
12. Method for producing a pouch-type reservoir according to any of claims 1 to 8, characterised in that it comprises a step of welding the pouch on an external face of a base under the dome,
    a step of filling with the product to be dispensed from the pouch assembled with the dome,
    a step of placing the valve-holder dish on the dome with pouch filled.
13. Method for producing a pouch-type reservoir according to claim 12, for which the dome serves as a member for holding the reservoir during the filling of the pouch.
14. Method for producing a pouch-type reservoir according to claim 12 or claim 13, for which the dish is crimped on the dome on a station of a machine for filling the pouch after said filling.

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