EP1270444B1 - Device for simultaneously distributing two separately packaged products - Google Patents

Abstract

The dispenser for hair dye or bleach comprises sachets (4, 5) for the components of the product, which are stored separately. The mouths (38, 38') of these are arranged side-by-side and the product is dispensed by pressing on plates (15, 15') mounted on hinges (6, 6') on the outsides of the sachets.

Description

The present invention relates to a device for the joint distribution of two products, packaged separately in flexible-walled packages in the form of sachets. Such a device is particularly suitable for dispensing products in order to obtain a hair composition, in particular based on a dye and an oxidant.

In the field of hair products, there is known a device for the distribution of two products, comprising two connected compartments, of the document DE-29717244 .

In the field of hair dyeing, especially oxidation dyeing involving the extemporaneous mixing of a dye and an oxidant, the two products to be mixed are packaged either in a tube for one (dye) and in one vial for the other (oxidant), either in a tube for both, or in a vial for both.

More sophisticated systems, but which are now less and less used, allow, more or less automatically, by a simple gesture of rotation or depression, to ensure the mixing of the two packaged products in separate bottles, view of their application on the hair.

All these systems are not without disadvantages. For some, the cost is too important, and therefore incompatible with the requirements imposed by large distribution channels. In addition, reliability is not always at the rendezvous. For others, the gesture is complicated. For still others, it is difficult to distribute the two products in a predetermined ratio, so that the result, in terms of color obtained, does not correspond to what was expected.

The patent application EP-A 0 407 320 describes a system for extruding the contents of an envelope, said system being configured in the form of a "V" clamp actuated by the user and provided with a zone of lesser thickness forming the articulation. By its configuration, such a system is only suitable for emptying bags of small thicknesses. When it is used for emptying two sachets, then, they can be arranged only one next to the other, ie substantially in the same plane. Therefore, their respective outlets are necessarily at a distance from each other which is such that the joint distribution of the two products in a localized manner, is made very difficult or impossible.

The patent CH-A5-690 234 discloses a packaging device of a flexible package, consisting of a tubular sleeve whose wall of polygonal section is constituted by rigid plates articulated together by their longitudinal edges. This document does not provide for the use of such a device for the joint distribution of the contents of two flexible packages. In addition, because of the articulation of the rigid plates relative to each other along their longitudinal edges, it would be extremely difficult to position such packages so that their respective outlets are in the vicinity of one another. 'other. Finally, the exercise of identical pressure on both packages would be difficult to obtain. As a result, the distribution of the two products in a predetermined ratio could not be achieved easily.

Moreover, according to the two documents just discussed above, there is no actual fastening means, maintaining the bag or tube in a fixed position being provided by the pressurizing means themselves.

Also, is it an object of the invention to provide a device resolving all or part of the problems discussed above with reference to conventional devices.

It is in particular an object of the invention to provide such a device which is easy to use and cost-effective.

It is another object of the invention to provide a device for jointly dispensing two separately packaged products in a predetermined ratio of one product to the other.

It is yet another object of the invention to provide such a device which allows the joint distribution of two products, sufficiently localized for the two products to be brought into contact with each other directly to the where they are applied.

Still other objects will appear in the following detailed description.

According to the invention, these objects are achieved by providing a device for the simultaneous dispensing of at least two products, packaged separately in first and second soft-walled bags, as defined by claim 1.

The fact that both products can be packaged in sachets significantly reduces the cost attached to their packaging. Depending in particular on the viscosity of the product, and the size of the respective outlets of the bags, it is possible, by appropriately configuring the pressurizing means, to obtain a distribution ratio of the two products, as close as possible the desired report. In addition, the gesture is simple.

The pressurizing means consist of at least two plates, each plate being articulated relative to the fixing means via a hinge pin. This axis is preferably substantially perpendicular to a longitudinal axis X of the device. Such a configuration allows the use of the device for relatively large volume bags, and in particular for bags whose maximum thickness can be of the order of a centimeter or more.

Advantageously, the two plates are arranged facing one another, each plate being delimited by two longitudinal edges, the longitudinal edges of the first plate being, over their entire length, variable distance from the corresponding edges of the second plate. This feature contributes to the ability of the device to be used for larger bags. It also participates in the same pressurization of the two bags, so as to promote the distribution of their respective contents according to a predetermined ratio.

Each plate comprises a first end located in the vicinity of the outlet orifices, and a second end opposite the first end, said first end preferably being adjacent to the axis of articulation.

Preferably, the bags are able to be opened by cutting, tearing, or breaking an end portion of said bags.

Preferably, the plates are arranged symmetrically on either side of a mean plane situated at the interface between the two superimposed sachets which they frame, a first end of said plates situated in the vicinity of said outlet orifices, being coupled to the fastening means via a hinge pin, a second end of said plates, opposite to the first being free so that the mutual approximation of the second ends of said plates causes an identical pressurization of said bags.

Such an advantageous structure, with two identical plates symmetrically maintained on either side of the stack of the two bags, for products of identical viscosities, and for outlet orifices of identical sections, to distribute the two products according to one another. a ratio that can be 1: 1. If you want a different ratio, just play on the relative viscosity of the two products, and / or on the relative sections of the outlets of the bags.

Such symmetry, guaranteeing the same pressurization of the bags can also be obtained with more than two bags. For this purpose, it is possible to provide a third bag, disposed between the first two, and containing for example a perfume. Such a third bag could be of substantially volume lower, and have an outlet section smaller than the section of the outlets of the other two bags.

Advantageously, the two plates are obtained from two identical molded parts, in particular polypropylene.

Preferably, the device is configured to be able to rest freely on a substantially horizontal support with said outlets remote from said support. Thus, when the device thus rests on such a support, the products can not flow unintentionally.

Optimally, the device is configured to be able to rest substantially vertically on said support. Such a configuration can be achieved by resting the device on the free ends of the pressurizing plates, which act as feet.

1. i) un premier élément comprenant une première partie de fixation et une première plaque de pressurisation, mobile par rapport à la première partie de fixation selon une direction transversale à un plan moyen de ladite première plaque ;
2. ii) un second élément comprenant une seconde partie de fixation et une seconde plaque de pressurisation, mobile par rapport à la seconde partie de fixation selon une direction transversale à un plan moyen de ladite seconde plaque ; et
3. iii) des moyens d'accrochage pour maintenir lesdits premier et second sachets en position superposée entre lesdits premier et second éléments, une face principale du premier sachet étant, au moins en partie, en regard d'une face interne de la première plaque de pressurisation, une face principale du second sachet, située à l'opposé de ladite face principale du premier sachet étant, au moins en partie, en regard d'une face interne de la seconde plaque de pressurisation.

According to a particular embodiment, the device comprises:

1. i) a first member comprising a first fixing portion and a first pressurizing plate, movable relative to the first fixing portion in a direction transverse to an average plane of said first plate;
2. ii) a second member comprising a second fixing portion and a second pressurizing plate, movable relative to the second fixing portion in a direction transverse to an average plane of said second plate; and
3. iii) hooking means for holding said first and second bags in superposed position between said first and second elements, a main face of the first bag being, at least in part, facing an inner face of the first pressurizing plate; , a main face of the second bag, located opposite said main face of the first bag being, at least in part, facing an inner face of the second pressurizing plate.

Preferably, in the mounted position of the bags between the first and second elements, an end portion of said pouches extends beyond said first and second fastening portions so as to allow tearing, cutting or breaking. Thus, the opening of the bags can be performed only after positioning the bags on the device, thus avoiding any output of one and / or the other of the products during the introduction of the bags.

The opening of the bags can be done by hand, by tearing the end portions. Alternatively, it may require the use of a tool such as a pair of scissors.

In the mounted position of the device, said first and second attachment portions may form a tip oriented along an axis X of the device, and allowing the localized application of the two products. Thus, the tip allows the output of the products side by side, putting them in contact directly to the place where they are applied.

One and / or the other of said first and second attachment portions can (wind) form on at least a part of the length of the endpiece, an axial bulge, each of said bags delimiting an outlet channel leading to a part on said outlet orifice, and secondly on a portion of greater width forming a reservoir, the (or) bulge (s) axial (aux), facilitating communication between the outlet ports of the bags, and their reservoirs respective channels via their respective output channels.

In the mounted position of the device, said first and second pressurization plates are preferably pivotable relative to said first and second fixing portions, respectively, around a hinge zone, in particular in the form of a film hinge. , oriented substantially perpendicular to a longitudinal axis X of the device. This feature facilitates the exercise of the same pressure on both bags.

The articulation zones of the first and second elements may be delimited, according to the perpendicular to the X axis, by first ends of two cutouts extending obliquely to second ends opening on respective longitudinal edges of said first and second members.

The attachment means can provide a reversible mounting of the bags on the device. Thus, such a coupling can be achieved by screwing or reversible latching. In this case, after distribution of their contents, the two bags can be removed. The device can then be passed under tap water for cleaning and then kept for further use. In this case, from a commercial point of view, it is possible to provide for the marketing of the bags independently of that of the rest of the device.

Alternatively, the attachment means ensure irreversible mounting of the bags on the device. Such an irreversible mounting can be obtained by gluing, welding, irreversible snapping, or by a "rivet" type system.

According to one embodiment, the attachment means comprise at least one element, in particular in the form of a screw, a harpoon system, or a rivet, passing through fixing holes formed in the first and second bags, as well as in one and / or the other of said first and second fixing portions, said holes being able to be placed opposite one another.

Preferably, said (or said) attachment element (s) is (are) integral with one and / or the other of said first and second fixing parts. They can be obtained by molding with the fastening part of which they are integral.

In particular in the case of snap-fastening, the attachment can result from the cooperation of a portion of the attachment means of the first fixing portion with a complementary portion formed directly by the second fixing portion.

Alternatively, the attachment may result from the cooperation of a portion of the attachment means of the first fixing portion with a separate member of the second fixing portion, for example a nut.

According to another alternative, the attachment can result from the cooperation of two distinct elements of the first and second fastening parts (rivet, screw / nut, etc.).

According to an advantageous embodiment, said first and second bags as well as said first and second attachment portions each form two shoulders located on either side of a longitudinal axis X of the device, the device comprising at least one element of hanging on either side of the X axis, at each of said shoulders.

Preferably, each of the fixing parts is secured to at least one fastening element. Thus, it is possible to provide at least one first attachment means on one shoulder of one of the attachment parts, and at least one second attachment means, identical to the first, on the same shoulder of the other of the fixing parts, which thus allows, when the two fixing parts are arranged with their internal faces facing each other, at least one attachment in each of the shoulders. By this arrangement, the device may comprise two elements that can be obtained from two identical molded parts, thereby reducing the cost of molding the constituent elements of the device.

At least prior to the opening of the outlet ports by tearing, cutting or breaking, the first and second pressurizing plates diverge away from said outlet ports, a free end of said pressurizing plates extending beyond the bottom of said first and second sachets. This allows, as indicated above, to rest the device in a vertical position on a horizontal surface.

Each of the sachets may comprise two sheets delimiting each a main face of the bag, and an end sheet forming a bottom. Such a configuration allows a harmonious opening of the triangle pocket, the top of the triangle being in the vicinity of the outlets. Such a configuration facilitates the divergent arrangement of the pressurizing plates, which divergent arrangement ensures good stability of the device when it rests in a vertical position on a support.

At least one of said first and second bags may be formed from an aluminum complex and a plastic material, heat-sealable with itself.

The device according to the invention is particularly suitable for the simultaneous distribution of at least two products in order to form a cosmetic composition, in particular a capillary composition.

• la figure 1 représente une vue éclatée d'un mode de réalisation du dispositif selon l'invention ;
• les figures 2A et 2B représentent une vue de face et une vue de côté simplifiée d'un sachet pouvant être utilisé dans le dispositif selon l'invention ;
• la figure 3 représente le dispositif de la figure 1 en position assemblée, reposant sur un plan de travail horizontal ;
• la figure 4 représente une vue en coupe longitudinale du dispositif de la figure 3 ; et
• les figures 5A-5C illustrent les différentes étapes d'utilisation d'un dispositif tel que représenté sur les figures précédentes.

The invention consists, apart from the arrangements described above, in a certain number of other arrangements which will be explained below, with reference to nonlimiting exemplary embodiments, described with reference to the appended figures, among which:

• the figure 1 represents an exploded view of an embodiment of the device according to the invention;
• the Figures 2A and 2B represent a front view and a simplified side view of a bag that can be used in the device according to the invention;
• the figure 3 represents the device of the figure 1 in assembled position, resting on a horizontal work plan;
• the figure 4 represents a longitudinal sectional view of the device of the figure 3 ; and
• the Figures 5A-5C illustrate the different steps of using a device as shown in the previous figures.

The device 1 illustrated in figures 1 , 2A-2B , 3 , and 4 comprises two identical elements 2 and 3 between which are arranged two identical sachets 4 and 5, the sachet 4 containing for example a dye, the sachet 5 containing an oxidant, the whole being intended for the preparation of a hair dye composition.

Element 2 is configured as a substantially flat shaped member. It comprises an attachment portion 6 defining two shoulders 7 and 8 connected by a transverse shoulder to an elongate portion 9 hollowed out axially from to substantially define a hollow half-cylinder 10 open at its free end 11.

One of the shoulders 7 of the element 2 is pierced with a hole 12. On the other shoulder 8, symmetrically with respect to a longitudinal axis of the element 2, a threaded rod 13 protrudes from the surface inside 22 of the element 2.

At its end opposite to the free end 11, the hollow half-cylinder 10 is connected via a film hinge 14 to one end 24 of a plate 15. The length of the film hinge is delimited by the ends 16 and 17 of two blanks 18 and 19 extending obliquely to the longitudinal edges 20, 21 of the element 2.

Thus, the plate 15 can pivot relative to the fixing portion 6 about an axis perpendicular to a longitudinal axis of the element 2, and defined by said film hinge 14.

The device according to this embodiment comprises a second element 3, identical to the element 2 and whose inner surface 22 'is intended to be turned facing the inner surface 22 of the element 2. For reasons of simplicity of the presentation, the description of element 3 will not be repeated. In the drawing, we used the same numerical references as those used for element 2, adding a "premium".

The device also comprises a first bag 4 containing a first product and a second bag 5 containing a second product, distinct from the first.

As shown in more detail in the Figure 2A-2B , the bag 4 is substantially identical in shape to the shape of the elements 2 and 3 which have just been described. It is formed by the superposition of two sheets 30, 31, made of a complex based on aluminum and a thermoplastic material, heat-sealable on itself. An end sheet 32, made of an identical material, forms the bottom of the bag, conferring volume to the latter.

The peripheral welding zones 33 of the sheets 30, 31 delimit a portion of greater width 34 forming the actual reservoir, said reservoir being separated by a shoulder 35 from an axial outlet passage 36 terminating at a portion of a portion. end 37. By tearing the portion 37, it causes the communication of the outlet passage 36 with the outside through an opening 38 located substantially at the junction between the end portion 37 and the rest of the bag 4.

The bag 4 forms, on either side of its longitudinal axis, two shoulders 39, 40, at which the sheets 30 and 31 are heat-sealed. Holes 41, 42, arranged symmetrically with respect to the axis of the bag, are formed respectively in the shoulders 39, 40.

The bag 5 is identical to the bag 4. For the sake of simplicity of the presentation, its description will not be repeated. In the drawing, the bag 5 has the same numerical references as the bag 4 which has been added a "premium".

To assemble the assembly, the elements 2 and 3 and the sachets 4 and 5 are arranged in the manner illustrated in the exploded view of the assembly. figure 1 .

Thus, on the bottom plate 2, there is a first bag 4 by inserting the threaded rod 13 inside the hole 41, and positioning the hole 42 of the bag opposite the hole 12 formed on the shoulder 7 of the element 2.

The procedure is the same with the sachet 5.

Then the element 3 is brought above the stack thus produced, by turning the inner surface 22 'of the element 3 towards the inner surface 22 of the element 2. It is passed through the threaded rod 13' of the element 3, the hole 42 'of the bag 5, the hole 42 of the bag 4, and the hole 12 of the element 2. In the same way, the threaded rod 13 of the element 2 is passed through, the hole 41 of the bag 4, the hole 41 'of the bag 5, and the hole 12' of the element 3. A nut 43, 43 'is screwed onto the free end of each of the threaded rods 13, 13'.

The whole thus formed is represented on the figure 3 . In this figure, the device 1, of longitudinal axis X, rests on the free end 23, 23 'of the plates 15, 15', the latter projecting slightly beyond the bottom 32, 32 'of the bags 4 and 5. The cooperation of the two half-cylinders 9 and 9 'of the elements 2 and 3, when they are arranged facing each other, makes it possible to define an elongated tip allowing the localized application of the two products.

To use the device according to the invention, after assembly as described above, the procedure is Figures 5A-5C .

To the Figure 5A , the user tears the end members 37 and 37 'of the bags 4 and 5 so as to release their respective outlets 38 and 38', which are located next to each other.

Then, as shown in Figure 5B it grasps the device 1 between the thumb and forefinger, and brings the end of the device 1 to the place where it wishes to apply the two products, for example on the hair. At this time, it exerts pressure on the plates 15 and 15 'so as to bring them closer to each other. In doing so, the products contained in the bags 4 and 5 exit through the respective orifices 38 and 38 ', at which they come into contact with one another. Blending occurs directly where the products are applied.

After emptying the entire product, the plates 15 and 15 'are substantially in contact with each other, as shown in FIG. Figure 5C .

It can then remove the bags 4 and 5, after having previously unscrewed the nuts 43 and 43 '. She passes the items 2 and 3 under the tap so as to clean them. The elements 2 and 3 are then stored for later use with two new bags 4 and 5, which can be marketed separately from the device 1.

In the foregoing detailed description, reference has been made to preferred embodiments of the invention. It is obvious that variations may be made without departing from the spirit of the invention as claimed hereinafter.

Claims (25)

1. Device (1) for the simultaneous dispensing of at least two products, packaged separately in first and second flexible-walled sachets (4, 5), the said device comprising:

   i) means (6, 6') for fixedly holding the two sachets (4, 5) in a superposed position so that respective outlet orifices (38, 38') of the said sachets are in the vicinity of one another; and

   ii) means (15, 15') which can move with respect to the fixing means (6, 6') and are able to pressurize the two sachets in such a way as to force their contents out through their respective outlet orifices (38, 38') in a predetermined ratio, characterized in that the pressurizing means (15, 15') consist of at least two plates (15, 15'), each plate being coupled to the fixing means (6, 6') via an articulation axis (14, 14').
2. Device (1) according to Claim 1, characterized in that the said articulation axis (14, 14') is roughly perpendicular to a longitudinal axis X of the device.
3. Device (1) according to Claim 2, characterized in that the two plates (15, 15') are arranged one facing the other, each plate (15, 15') being delimited by two longitudinal edges (20, 21, 20', 21'), the longitudinal edges (20, 21) of the first plate (15) being, over the entirety of their length, a variable distance away from the corresponding edges (20', 21') of the second plate (15').
4. Device (1) according to Claim 2 or 3, characterized in that each plate (15, 15') comprises a first end (24, 24') situated in the vicinity of the outlet orifices (38, 38'), and a second end (23, 23') at the opposite end to the first, the said first end (24, 24') being adjacent to the articulation axis (14, 14').
5. Device (1) according to any one of Claims 1 to 4, characterized in that the said sachets (4, 5) can be opened by cutting, tearing or breaking an end portion (37, 37') of the said sachets (4, 5).
6. Device (1) according to any one of Claims 1 to 5, characterized in that the means (15, 15') for pressurizing the sachets (4, 5) comprise two pressurizing plates (15, 15') between which the two superposed sachets (4, 5) are arranged, the said plates (15, 15') being arranged symmetrically on each side of a mid-plane situated at the interface between the two sachets (4, 5), a first end (24, 24') of the said plates, which end is situated in the vicinity of the said outlet orifices (38, 38'), being coupled to the fixing means (6, 6') via an articulation axis (14, 14'), a second end (23, 23') of the said plates, at the opposite end to the first (24, 24'), being free so that bringing the second ends (23, 23') of the said plates closer together causes the said sachets (4, 5) to be pressurized identically.
7. Device (1) according to Claim 6, characterized in that the two pressurizing plates (15, 15') are obtained from two identical mouldings.
8. Device (1) according to any one of Claims 1 to 7, characterized in that it is configured in such a way as to be able to rest freely on a roughly horizontal support (S) with the said outlet orifices (38, 38') some distance from the said support.
9. Device (1) according to Claim 8, characterized in that it is configured so as to be able to rest roughly vertically on the said support (S).
10. Device (1) according to any one of Claims 1 to 9, characterized in that it comprises:

    i) a first element (2) comprising a first fixing part (6) and a first pressurizing plate (15) that moves with respect to the first fixing part in a direction transverse to a mean plane of the said first plate (15);

    ii) a second element (3) comprising a second fixing part (6') and a second pressurizing plate (15') that moves with respect to the second fixing part in a direction transverse to a mean plane of the said second plate (15'); and

    iii) catching means (13, 13', 43, 43') for holding the said first and second sachets (4, 5) in a superposed position between the said first and second elements, a main face (31) of the first sachet (4) being, at least in part, opposite an internal face (22) of the first pressurizing plate (15), a main face (31') of the second sachet (5), situated on the opposite side to the said main face of the first sachet, being, at least in part, opposite an internal face (22') of the second pressurizing plate (15').
11. Device (1) according to Claim 10, characterized in that, when the sachets (4, 5) are in position between the first and second elements (2, 3), an end portion (37, 37') of the said sachets (4, 5) continues beyond the said first and second fixing parts (6, 6') so as to allow them to be opened, particularly by tearing, cutting or breaking the said end portion.
12. Device (1) according to Claim 10 or 11, characterized in that, when the device is in the assembled position, the said first and second fixing parts (6, 6') form an end-piece (9, 9') directed along an axis X of the device and allowing localized application of the two products.
13. Device (1) according to Claim 12, characterized in that one and/or other of the said first and second fixing parts (6, 6') forms (form), on at least part of the length of the end-piece, an axial bulge (10, 10'), each of the said sachets delimiting an outlet duct (36, 36') opening, on the one hand, into the said outlet orifice (38, 38') and, on the other hand, into a larger-width portion forming a reservoir (34, 34'), the axial bulge(s) facilitating the communication between the outlet orifices (38, 38') of the sachets and their respective reservoirs (34, 34') via their respective outlet ducts (36, 36').
14. Device (1) according to any one of Claims 10 to 13, characterized in that, when the device is in the assembled position, the said first and second pressurizing plates (15, 15') are able to pivot with respect to the said first and second fixing parts (6, 6'), respectively, about an articulation region (14, 14'), particularly in the form of a living hinge, oriented roughly at right angles to a longitudinal axis X of the device.
15. Device (1) according to Claim 14, characterized in that the articulation regions (14, 14') of the first and second elements are delimited along the perpendicular to the axis X by first ends (16, 17, 16', 17') of two cuts (18, 19, 18' , 19') running at an angle as far as second ends opening onto respective longitudinal edges (20, 21, 20', 21') of the said first and second elements (2, 3).
16. Device (1) according to any one of Claims 10 to 15, characterized in that the said catching means (13, 13', 43, 43') allow the sachets (4, 5) to be assembled reversibly on the device.
17. Device (1) according to any one of Claims 10 to 15, characterized in that the said catching means (13, 13', 43, 43') allow the sachets (4, 5) to be assembled irreversibly on the device.
18. Device (1) according to Claim 16 or 17, characterized in that the catching means comprise at least one element (13, 13'), particularly in the form of a screw, of a barbed system, or of a rivet, passing through fixing holes (12, 12', 41, 42, 41', 42') formed in the first and second sachets (4, 5) and in one and/or other of the said first and second fixing parts (6, 6'), the said holes being able to be placed in register with each other.
19. Device (1) according to Claim 18, characterized in that the said catching element(s) (13, 13') is (are) secured to one and/or other of the said first and second fixing parts (6, 6').
20. Device (1) according to Claim 18 or 19, characterized in that the said first and second sachets (4, 5) and the said first and second fixing parts (6, 6') each form two shoulders (7, 8, 7', 8', 39, 40, 39', 40') situated one on each side of a longitudinal axis X of the device, the device (1) comprising at least one catching element (13, 43, 13', 43') on each side of the axis X, at each of the said shoulders.
21. Device (1) according to Claim 20, characterized in that at least one first catching element (13) is secured to the first fixing part (6), at least one second catching element (13') being secured to the second fixing part (6').
22. Device (1) according to any one of Claims 10 to 21, characterized in that, at least prior to opening the outlet orifices (38, 38'), particularly by tearing, cutting or breaking, the first and second pressurizing plates (15, 15') diverge in the direction away from the said outlet orifices (38, 38'), a free end (23, 23') of the said pressurizing plates extending beyond the bottom (32, 32') of the said first and second sachets.
23. Device (1) according to any one of Claims 1 to 22, characterized in that each of the sachets (4, 5) comprises two sheets (30, 31, 30', 31') each delimiting a main face of the sachet, and an end sheet (32, 32') forming a bottom.
24. Device (1) according to any one of Claims 1 to 23, characterized in that at least one of the said first and second sachets (4, 5) is formed of a complex of aluminium and of a plastic that can be thermally welded to itself.
25. Use of a device (1) according to any one of the preceding claims for the simultaneous dispensing of at least two products with a view to forming a cosmetic composition, particularly a hair composition.

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