EP3953271B1 - Valve holding device for pocket refill, pocket refill and refillable dispenser casing comprising same - Google Patents

Description

Technical area

The present invention relates to refillable pressure dispenser boxes comprising a pocket reservoir containing a product to be distributed through a diffusion valve.

Prior art

The document FR3008397 A1 in the name of the applicant describes a bag tank for which a valve, integral with a valve holder cup is mounted on a dome provided with a bowl for receiving the cup and for which the bowl serves as a filling orifice for the pocket before mounting the valve holder cup which crimps onto a peripheral edge of the bowl.

Such a pocket reservoir is easy to fill, which allows refills to be carried out more quickly and at lower cost and accepts fragile products, preventing filling of the pocket through the reverse flow valve.

Furthermore, the document FR 2 723 356 A1 deals with a device comprising a rigid external container provided with a manual pump mounted on a neck of the external container and in a sealed manner on a neck of a deformable internal container in the rigid container, this device comprising inlet orifices of air is provided so as to create an entry of outside air into a volume between the rigid external container and the deformable internal container. This document therefore provides for the venting of a space between the outer container and the inner container while the inner container is waterproof.

Presentation of the invention

The present invention aims on the one hand to improve such a pocket tank with the aim of being able to distribute volatile products such as for example hydrogen peroxide used as a disinfectant and which, due to its strong degassing, cannot be stored easily directly into soft pockets. The invention also aims to improve the welding of a pocket on a device closure such as a valve holder dome and to offer a pocket reservoir that can accommodate additional equipment to increase the possibilities of using the distributor box.

To do this and according to a first aspect, the present invention firstly proposes a pocket tank, for a pressure distributor housing, comprising a pocket and a dome provided, in the lower part, with a tubular base provided with an external profile for receiving and welding a neck of the bag and, in the upper part, a housing for receiving a valve for dispensing a product contained in the bag, for which the tubular base and the neck of the pocket welded to said external profile are each provided with a degassing hole at said external profile.

Thus the bag can be filled with a product likely to degas during storage of the bag such as for example hydrogen peroxide used in vaporization to disinfect premises.

Preferably the degassing hole of the pocket is covered with a semi-permeable membrane glued or welded to the pocket and adapted to allow a gas to pass from the inside of the pocket to the outside of the pocket while retaining a contained liquid. in the pocket.

This prevents a liquid contained in the bag from leaking through the degassing hole.

According to a second aspect of the invention, the dome comprises a tubular welding part of a pocket whose external profile is an elliptical section profile with refined ends forming fins.

The external profile can advantageously include a first annular groove for receiving excess material from the pocket after welding, the first annular groove being surrounded by annular beads.

The tightness of the weld of the pocket on the dome is thus improved.

According to a particular embodiment, the invention provides a dome whose tubular base opens at the upper part into a bowl made in the dome, the bowl forming said housing for receiving a valve ending in the upper part with an annular collar overhanging a second annular groove for crimping a valve holder cup.

The bowl allows easy filling of the pocket before crimping the valve onto the dome.

According to a third aspect, the invention relates to a pocket reservoir device and adapter for mounting external equipment, comprising a pocket reservoir provided with a dome for which the dome has fins, for fixing the adapter itself. even provided with internal fixing ramps complementary to said fins.

This adapter allows the device to become a refill for any application system of the gun type for application such as for example a polyurethane foam applicator gun, projection, dosing; but also in machines either for maintenance: greasing, lubrication, disinfection, etc. or for depositing on manufactured products: glue, ink, etc.

The fins and the ramps advantageously form a fixing device. According to an alternative embodiment, the dome includes an external thread for fixing the adapter itself provided with a complementary internal thread with or without a stop.

The adapter can advantageously comprise a rear part for gripping and fixing on the dome and a front part for fixing an accessory provided with a standardized external thread.

The invention further proposes a refillable dispenser box comprising a pocket reservoir according to the invention.

Brief description of the drawings

• [Fig. 1] représente un boîtier rechargeable et un réservoir à poche de l'invention en vue éclatée de côté ;
• [Fig. 2] représente une vue de détail du haut d'une poche et d'un dôme selon l'invention en perspective trois/quart face;
• [Fig. 3] représente le dôme de la figure 2 en coupe de côté ;
• [Fig. 4] représente le dôme de la figure 2 en coupe de derrière ;
• [Fig. 5] représente un dôme et un adaptateur selon un mode de réalisation de l'invention en perspective ;
• [Fig. 6] représente l'adaptateur de la figure 5 en perspective de dessus.

Other characteristics, details and advantages of the invention will appear on reading the detailed description which describes examples of embodiment of the invention with reference to the appended drawings which represent:

• [ Fig. 1 ] represents a rechargeable housing and a pocket reservoir of the invention in exploded side view;
• [ Fig. 2 ] represents a detailed view of the top of a pocket and a dome according to the invention in three/quarter side perspective;
• [ Fig. 3 ] represents the dome of the figure 2 in side section;
• [ Fig. 4 ] represents the dome of the figure 2 in section from behind;
• [ Fig. 5 ] represents a dome and an adapter according to one embodiment of the invention in perspective;
• [ Fig. 6 ] represents the adapter of the Figure 5 in perspective from above.

Description of embodiments

The drawings and the description below relate to exemplary embodiments which can be used to better understand the present invention, but also to contribute to its definition, if necessary.

There figure 1 represents a pressurized dispenser housing and a bag reservoir recharging the dispenser housing and which comprises various aspects of the invention.

The pocket tank comprises a pocket 50 and a dome 20. The pocket is shown before mounting on the dome. The pocket of generally rectangular shape has two faces whose lower edge 54 and the side edges 51 are welded while the upper edge being intended to be welded to the dome allows at this stage the opening of the pocket.

The dome 20 is provided, in the lower part, with a tubular base 22 provided with an external profile 22a, 23, 24, 25 for receiving and welding a neck (53) of the pocket.

There figure 2 represents the shape of the top of the pocket after welding to the dome.

According to a first aspect of the device described, the tubular base and the neck of the pocket welded to said external profile are each provided with a degassing hole 60, 61 at said external profile. The degassing hole has a small diameter of the order of a millimeter or a few millimeters.

This degassing hole is advantageously made after welding the pocket on the dome by drilling with a rotating drill or with a heating tip, the figures representing the dome and the disassembled pocket already provided with holes 60, 61 being provided only to for illustrative purposes, the holes being preferably made after welding to facilitate their production.

According to figure 2 , the pocket hole area is covered, after welding on the dome and drilling, with a piece of a semi-permeable membrane 62 glued or welded to the pocket. This membrane is adapted to allow a gas to pass from the inside of the bag to the outside of the bag while retaining a liquid contained in the bag.

To receive the bag, the dome is provided in its lower part with a tubular base 22.

This tubular base 22 has an external profile of elliptical section with refined ends forming fins 22a which serve as additional welding surfaces of small section for the pocket in order to limit the risk of loss of sealing at the weld level.

Furthermore, according to a complementary or independent aspect represented in particular in figures 2 And 4 the external profile comprises a first annular groove 24 for receiving excess material from the pocket after welding surrounded by annular beads 23, 25.

This configuration further improves the welding of the pocket on the dome, strengthens it and avoids leaks at the weld.

In the upper part, the dome is provided with a housing 30, shown in particular in figures 3 and 4 , to receive a valve 90 for dispensing a product contained in the bag, the valve being mounted in a traditional manner in a valve holder cup 91 as shown in figure 2 .

The housing forms a bowl made in the dome, the bowl ending in the upper part with an annular collar 26 for crimping a collar 92 of the valve holder cup, the curved part of which during crimping is housed in a second annular groove 28 .

The dome is a one-piece plastic part that is easily produced by molding, is inexpensive and robust. In addition, due to its one-piece construction, the dome is completely waterproof. The upper annular collar 26 and the second annular groove 28 allow tight and robust crimping of the valve holder cup 91, the refillable housing made of plastic material provided with its refill tank thus being able to withstand high internal pressure beyond 8 bars depending on carrying out the fixing of the dome to the housing.

According to a complementary or independent aspect, the dome comprises means for fixing an adapter 40 for fixing accessories such as a spray gun. To do this, as shown in Figure 5 , the dome has fins 29a, for fixing the adapter 40 itself provided with internal ramps 42a, 42b complementary to said fins.

According to this embodiment, the fins and the ramps form a quarter-turn fixing device.

Alternatively, the dome has an external thread for fixing the adapter itself provided with a complementary internal thread with or without a stop.

The adapter 40 shown comprises a rear gripping part 41 which is knurled or ribbed, the internal part of which serves for fixing on the dome and a front part 43 for fixing an accessory provided with an external thread 44 which can be standardized for a range of previously existing accessories.

Back to the figure 1 , the bag reservoir comprises a dip tube 80 preventing the bag from being crushed when spraying the product and an upper part of which is fixed in the tubular base. The pocket reservoir equipped with its valve and filled constitutes a refill and is mounted in a refillable dispenser box 10. The dome has a collar 27 which is positioned on the upper edge 12 of the box and which is applied in a sealed manner to this upper edge by a clamping ring 70 which screws onto a screw thread 11 of the housing. The flange 27 of the dome may in particular include an elastomeric sealing gasket added or molded in bi-injection on its lower surface in contact with the upper edge 12 of the housing.

The pocket tank comprising a pocket 50 and a dome 20 is notably provided, in the lower part, with a tubular base 22 provided with an external profile 22a, 23, 24, 25 for receiving and welding a neck 53 of the pocket and, in the upper part, a housing 30 for receiving a valve for dispensing a product contained in the pocket, said housing being formed by a bowl made in the dome and surrounded by an annular collar 27 of the dome for fixing the pocket tank on said housing and the tubular base 22 and the neck 53 of the pocket welded to said external profile are each provided with a degassing hole 60, 61 at said external profile under said annular collar 27 of the dome.

This makes it possible in particular to produce a pressurized product dispenser box comprising a refillable dispenser box 10 receiving a bag reservoir according to the invention or a bag reservoir and adapter device described previously for which the collar 27 is positioned on the upper edge 12 of the refillable dispenser 10 and is applied in a sealed manner to this upper edge by a clamping ring 70 which screws onto a screw thread 11 of the refillable dispenser box 10, said degassing holes opening into said refillable dispenser box.

Claims (10)

1. Pocket reservoir, for a refillable pressurised dispenser casing, said pocket reservoir including a pocket (50) and a dome (20), said dome being provided, in the lower part, with a tubular base (22) provided with an external profile (22a, 23, 24, 25) for receiving and welding a collar (53) of the pocket and, in the upper part, a housing (30) for receiving a valve for dispensing a product contained in the pocket, characterised in that said external profile of the tubular base (22) and the collar (53) of the pocket welded onto said external profile are each provided with a degassing hole (60, 61) at the level of said external profile under an annular flange (27) of the dome, said degassing holes being in communication with one another and with the inside of the pocket.
2. Pocket reservoir according to claim 1, wherein the degassing hole (61) of the pocket is covered with a semi-permeable membrane (62), bonded or welded onto the pocket and adapted to allow gas to pass through from the inside of the pocket to the outside of the pocket while retaining a liquid contained in the pocket.
3. Pocket reservoir according to claim 1 or 2, wherein said external profile (22a, 23, 24, 25) is a profile of elliptical section with narrowed ends forming fins (22a).
4. Pocket reservoir according to claim 1, 2 or 3, wherein said external profile includes a first annular groove (24) for receiving excess material of the pocket after welding surrounded by annular bulges (23, 25).
5. Pocket reservoir according to any one of the preceding claims, wherein the tubular base (22) opens out in its upper part into a bowl made in the dome, the bowl forming said housing (30) for receiving a valve ending in the upper part by an annular flange (26) overhanging a second annular groove (28) for crimping a valve holding cup (91).
6. Pocket reservoir and adaptor device for mounting external equipment, including a pocket reservoir according to any one of the preceding claims, wherein the dome includes fins (29a), for fastening the adaptor (40) itself provided with internal fastening ramps (42a, 42b) complementary to said fins.
7. Pocket reservoir and adaptor device according to claim 6, wherein the fins and the ramps form a quarter-turn fastening device.
8. Pocket reservoir and adaptor device for mounting external equipment, including a pocket reservoir according to any one of claims 1 to 5, wherein the dome includes an external thread for fastening the adaptor itself provided with a complementary internal thread with or without a stop.
9. Pocket reservoir and adaptor device according to claim 6, 7 or 8, wherein the adaptor (40) includes a rear part for gripping (41) and fastening on the dome and a front part (43) for fastening an accessory provided with a standard external thread (44).
10. Pressurised product dispenser casing including a refillable dispenser casing (10) receiving a pocket reservoir according to any one of claims 1 to 5 or a pocket reservoir and adaptor device according to any one of claims 6 to 9 and wherein the flange (27) is positioned on the upper edge (12) of the refillable dispenser (10) and is pressed in a sealed manner against this upper edge by a clamping ring (70) that screws onto a screw pitch (11) of the refillable dispenser casing (10), said degassing holes opening out into said refillable dispenser casing.

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