VALVE HOLDING DEVICE FOR POCKET REFILL, POCKET REFILL AND REFILLABLE DISPENSER CASING COMPRISING SAME

Abstract

A pouch reservoir for a pressurized dispenser casing, having a pouch and a dome provided, in its lower part, with a tubular base provided with an external profile for receiving and welding a neck of the pouch and, in its upper part, with a housing for receiving a valve for dispensing a product contained in the pouch. The tubular base and the neck of the pouch welded to the external profile are each provided with a degassing hole at the external profile.

Claims

1. A pouch reservoir for a pressurized dispenser casing, having: a pouch; and a dome provided, in its lower part, with a tubular base provided with an external profile for receiving and welding a neck of the pouch and, in its upper part, with a housing for receiving a valve for dispensing a product contained in the pouch; wherein the tubular base and the neck of the pouch welded to said external profile are each provided with a degassing hole at said external profile.

2. The pouch reservoir as claimed in claim 1, wherein the degassing hole of the pouch is covered with a semipermeable membrane, which is adhesively bonded or welded to the pouch and designed to allow a gas to pass through from the inside of the pouch to the outside of the pouch while retaining a liquid contained in the pouch.

3. The pouch reservoir as claimed in claim 1, wherein said external profile is a profile of elliptical section having narrowed ends forming fins.

4. The pouch reservoir as claimed in claim 1, wherein said external profile has a first annular groove for receiving excess material of the pouch after welding, surrounded by annular bulges.

5. The pouch reservoir as claimed in claim 1, wherein the tubular base opens out in its upper part into a bowl made in the dome, the bowl forming said housing for receiving a valve that ends in the upper part with an annular flange vertically above a second annular groove for crimping a valve holding cup.

6-9. (canceled)

10. A refillable dispenser casing having: a pouch reservoir; wherein said pouch reservoir comprises a pouch and a dome provided, in its lower part, with a tubular base provided with an external profile for receiving and welding a neck of the pouch and, in its upper part, with a housing for receiving a valve for dispensing a product contained in the pouch, wherein the tubular base and the neck of the pouch welded to said external profile are each provided with a degassing hole at said external profile.

11. The refillable dispenser casing having a pouch reservoir as claimed in claim 10, wherein the degassing hole of the pouch is covered with a semipermeable membrane, which is adhesively bonded or welded to the pouch and designed to allow a gas to pass through from the inside of the pouch to the outside of the pouch while retaining a liquid contained in the pouch.

12. The refillable dispenser casing having a pouch reservoir as claimed in claim 10, wherein said external profile is a profile of elliptical section having narrowed ends forming fins.

13. The refillable dispenser casing having a pouch reservoir as claimed in claim 10, wherein said external profile has a first annular groove for receiving excess material of the pouch after welding, surrounded by annular bulges.

14. The refillable dispenser casing having a pouch reservoir as claimed in claim 10, wherein the tubular base opens out in its upper part into a bowl made in the dome, the bowl forming said housing for receiving a valve that ends in the upper part with an annular flange vertically above a second annular groove for crimping a valve holding cup.

15. The refillable dispenser casing having a pouch reservoir as claimed in claim 10, comprising further an adapter device for mounting an external item of equipment, wherein said dome comprises first attachment means for an adapter device, and wherein said adapter device comprises second attachment means complementary to said first attachment means.

16. The refillable dispenser casing having a pouch reservoir as claimed in claim 15 wherein said first attachment means comprise fins for fixing the adapter device and wherein said second attachment means comprise internal fixing ramps complementary to said fins.

17. The refillable dispenser casing having a pouch reservoir as claimed in claim 16, wherein the fins and the ramps form a quarter-turn fixing device.

18. The refillable dispenser casing having a pouch reservoir as claimed in claim 15 wherein said first attachment means comprise an external thread for fixing the adapter device and wherein said second attachment means comprise an internal thread complementary to said external thread.

19. A pouch-reservoir and adapter device for mounting an external item of equipment, having a pouch reservoir as claimed in claim 1, wherein the dome comprises first attachment means for said adapter device, and wherein said adapter device comprises second attachment means complementary to said first attachment means.

20. The pouch-reservoir and adapter device as claimed in claim 19, wherein said first attachment means comprise fins for fixing the adapter device and wherein said second attachment means comprise internal fixing ramps complementary to said fins.

21. The pouch-reservoir and adapter device as claimed in claim 20, wherein the fins and the ramps form a quarter-turn fixing device.

22. A pouch-reservoir and adapter device as claimed in claim 19, wherein said first attachment means comprise an external thread for fixing the adapter device and wherein said second attachment means comprise an internal thread complementary to said external thread.

23. The pouch-reservoir and adapter device as claimed in claim 19, wherein the adapter device has a rear gripping part for fixing to the dome and a front part for fixing an accessory provided with a standard external thread.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Further features, details and advantages of the disclosed embodiment will become apparent from reading the detailed description of exemplary aspects of the disclosed embodiment with reference to the appended drawings, in which:

[0022] FIG. 1 shows an exploded side view of a refillable casing and a pouch reservoir of the disclosed embodiment;

[0023] FIG. 2 shows a perspective three-quarter face-on detail view of the top of a pouch and of a dome according to the disclosed embodiment;

[0024] FIG. 3 shows a cross-sectional side view of the dome from FIG. 2;

[0025] FIG. 4 shows a cross-sectional rear view of the dome from FIG. 2;

[0026] FIG. 5 shows a perspective view of a dome and an adapter according to one aspect of the disclosed embodiment;

[0027] FIG. 6 shows a perspective top view of the adapter from FIG. 5.

DETAILED DESCRIPTION

[0028] The drawings and the description below relate to exemplary aspects for better understanding the disclosed embodiment, but also for contributing to the definition thereof, where applicable.

[0029] FIG. 1 shows a pressurized distributor casing and a pouch reservoir which forms a refill of the distributor casing and comprises various aspects of the disclosed embodiment.

[0030] The pouch reservoir has a pouch 50 and a dome 20. The pouch is shown before being mounted on the dome. The pouch, of rectangular overall shape, has two faces, the lower edge 54 and the lateral edges 51 of which are welded, while the upper edge, which is intended to be welded to the dome, allows the pouch to be opened at this stage.

[0031] The dome 20 is provided, in its 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 pouch.

[0032] FIG. 2 shows the shape of the top of the pouch after it has been welded to the dome.

[0033] According to a first aspect of the described device, the tubular base and the neck of the pouch 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 around a millimeter or a few millimeters.

[0034] This degassing hole is advantageously made after the pouch has been welded to the dome by drilling with a rotary drill bit or with a heated tip, the figures showing the dome and the pouch in a disassembled state already provided with holes 60, 61 that are only provided by way of illustration, the hole preferably being made after welding to make them easier to produce.

[0035] According to FIG. 2, the region of the hole in the pouch is covered, after welding to the dome and drilling, by a section of semi-permeable membrane 62 adhesively bonded or welded to the pouch. This membrane is designed to allow a gas to pass through from the inside of the pouch to the outside of the pouch while retaining a liquid contained in the pouch.

[0036] To receive the pouch, the dome is provided in its lower part with a tubular base 22.

[0037] This tubular base 22 has an external profile of elliptical section with narrowed ends forming fins 22a that act as additional welding surfaces of small cross-sectional area for the pouch in order to limit the risks of a loss of sealing at the weld.

[0038] Furthermore, according to an additional or independent aspect shown in particular in FIGS. 2 and 4, the external profile has a first annular groove 24 for receiving excess material of the pouch after welding surrounded by annular bulges 23, 25.

[0039] This configuration further improves the welding of the pouch to the dome, reinforces it and avoids any leaking at the weld.

[0040] In its upper part, the dome is provided with a housing 30, shown in particular in FIGS. 3 and 4, for receiving a valve 90 for dispensing a product contained in the pouch, the valve being mounted in a traditional manner in a valve holding cup 91, as shown in FIG. 2.

[0041] The housing forms a bowl made in the dome, the bowl ending in its upper part with an annular flange 26 for crimping a flange 92 of the valve holding cup, the part of which that is curved during crimping being accommodated in a second annular groove 28.

[0042] The dome is a one-piece plastics part that is easy to produce by molding, is inexpensive and robust. Moreover, on account of its being in one piece, the dome is entirely sealed. The upper annular flange 26 and the second annular groove 28 allow sealed and robust crimping of the valve holding cup 91, the refillable casing made of plastics material provided with its refill reservoir then being able to withstand a high internal pressure of greater than 8 bar depending on the manner of fixing the dome to the casing.

[0043] According to an additional or independent aspect, the dome has means for fixing an adapter 40 for fixing accessories such as a spray gun. To this end, as shown in FIG. 5, the dome has fins 29a for fixing the adapter 40, which is itself provided with internal ramps 42a, 42b complementary to said fins.

[0044] According to this aspect, the fins and the ramps form a quarter-turn fixing device.

[0045] In a variant, the dome has an external thread for fixing the adapter, which is itself provided with a complementary internal thread with or without an end stop.

[0046] The adapter 40 shown has a knurled or striated rear gripping part 41, the internal part of which serves for fixing to the dome and a front part 43 serves for fixing an accessory provided with an external thread 44 which can be a standard thread for a range of pre-existing accessories.

[0047] Returning to FIG. 1, the pouch reservoir has a dip tube 80 which counters collapsing of the pouch when the product is sprayed and an upper part of which is fixed in the tubular base. The pouch reservoir equipped with its valve and filled constitutes a refill and is mounted in a refillable distributor casing 10. The dome has a flange 27 which is positioned on the upper edge 12 of the casing and is pressed in a sealed manner against this upper edge by a clamping ring 70 that is screwed onto a screw pitch 11 of the casing. The flange 27 of the dome may in particular have an elastomer seal attached or molded by two-shot injection molding on its lower surface in contact with the upper edge 12 of the casing.

[0048] The pouch reservoir having a pouch 50 and a dome 20 is provided in particular, in its 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 pouch and, in its upper part, with a housing 30 for receiving a valve for dispensing a product contained in the pouch, said housing being formed by a bowl made in the dome and surrounded by an annular flange 27 of the dome for fixing the pouch reservoir to one said casing and the tubular base 22 and the neck 53 of the pouch welded to said external profile are each provided with a degassing hole 60, 61 at said external profile under said annular flange 27 of the dome.

[0049] This makes it possible in particular to produce a pressurized product dispenser casing having a refillable dispenser casing 10 that receives a pouch reservoir according to the disclosed embodiment or an above-described pouch-reservoir and adapter device in which 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 is screwed onto a screw pitch 11 of the refillable dispenser casing 10, said degassing holes opening into said refillable dispenser casing.

[0050] The disclosed embodiment is not limited to the examples shown and in particular the features of the tubular base, the fixing device for the adapter and the degassing system can be used independently of one another.