AEROSOL DEVICE FOR HAIR SHAPING AND/OR HAIRSTYLE HOLD

Abstract

The present invention relates to an aerosol device comprising: —a container containing a cosmetic composition which comprises one or more powders in a content of less than 7% by weight relative to the total weight of the composition, and—a dispensing head comprising a body and an end part comprising at least two outlet orifices configured to allow spraying of the composition about a longitudinal axis of the end part in at least two different directions, the dispensing head comprising at least first and second chambers, through which the composition stream successively passes before it exits via the outlet orifices.

Claims

1-14. (canceled)

15. An aerosol device comprising: a container containing a cosmetic composition that comprises less than 7% by weight of a powder, relative to the total weight of the composition; and a dispensing head comprising: a body disposed on the container; a diffuser disposed on the body and comprising: a peripheral skirt comprising outlet orifices configured to spray the cosmetic composition in different directions with respect to a longitudinal axis of the diffuser; a separation skirt disposed within the peripheral skirt and comprising apertures; a central stem disposed within the separation skirt and comprising at least one longitudinal passage; a first chamber formed between the central stem and the separation skirt; and a second chamber formed between the separation skirt and the peripheral skirt, wherein the cosmetic composition changes direction at least two times when flowing through the diffusor and prior to entering the outlet orifices.

16. The aerosol device of claim 15, wherein the power comprises a water-insoluble mineral compound.

17. The aerosol device of claim 16, wherein the water-insoluble mineral compound is chosen from metal carbonates, metal oxides, metal sulfates, magnesium silicates, or any combination thereof.

18. The aerosol device of claim 16, wherein the water-insoluble mineral the water-insoluble mineral compound is chosen from calcium carbonate, magnesium carbonate, alumina, barium sulfate and/or magnesium oxide, or any combination thereof.

19. The aerosol device of claim 15, wherein the powder comprises a sebum-absorbing powder having a sebum uptake of greater than or equal to 35 ml/100 g.

20. The aerosol device of claim 19, wherein the sebum-absorbing powder is chosen from starches, calcium silicates, perlites, zeolites, polylactic acids, silicas, polyamide powders, acrylic polymer powders, silicone elastomer powders, or any combination thereof.

21. The aerosol device of claim 19, wherein the sebum-absorbing powder comprises a modified starch chosen from aluminum starch octenylsuccinates, perlite, polylactic acids, zeolites, or any combination thereof.

22. The aerosol device of claim 15, wherein relative to the total weight of the cosmetic composition, the powder is present in a total amount ranging from 0.1% to 6.9% by weight.

23. The aerosol device of claim 15, wherein relative to the total weight of the cosmetic composition, the cosmetic composition comprises water in an amount of less than 5% by weight.

24. The aerosol device of claim 15, wherein the cosmetic composition comprises a propellant chosen from air, nitrogen, carbon dioxide, dimethyl ether, n-butane, propane, isobutene, isopentane, 1,1-difluoroethane, or any combination thereof.

25. The aerosol device of claim 24, wherein relative to the total weight of the composition, the cosmetic composition comprises the propellant in an amount ranging from 10% to 95% by weight.

26. The aerosol device of claim 15, wherein the cosmetic composition comprises a fixing polymer chosen from anionic fixing polymers, amphoteric fixing polymers, nonionic fixing polymers, or any combination thereof.

27. The aerosol device of claim 15, wherein axes of the outlet orifices are coplanar and extend perpendicular to the longitudinal axis.

28. The aerosol device of claim 15, wherein the diffuser comprises a dome-shaped wall comprising the outlet orifices.

29. The aerosol device of claim 15, wherein the body defines a cannula that extends along the longitudinal axis and is inclined relative to a longitudinal axis of the container.

30. A method of shaping hair, the method comprising: spraying the hair with an effective amount of a cosmetic composition; wherein the cosmetic composition comprises a powder in an amount of less than 7% by weight, relative to the total weight of the composition; wherein the cosmetic composition is sprayed from a dispensing head comprising: a body disposed on the container; a diffuser disposed on the body and comprising: a peripheral skirt comprising outlet orifices configured to spray the cosmetic composition in different directions with respect to a longitudinal axis of the diffuser; a separation skirt disposed within the peripheral skirt and comprising apertures; a central stem disposed within the separation skirt and comprising at least one longitudinal passage; a first chamber formed between the central stem and the separation skirt; and a second chamber formed between the separation skirt and the peripheral skirt, wherein the cosmetic composition changes direction at least two times when flowing through the diffusor and prior to entering the outlet orifices.

31. The method of claim 30, wherein the method further comprises rinsing the hair after spraying the cosmetic composition on the hair.

32. The method of claim 30, wherein the method further comprises: wetting the hair before the composition is sprayed onto the hair; and drying the hair after the composition is sprayed onto the hair.

Description

[0163] The invention will be understood more clearly on reading the following detailed description of a non-limiting illustrative embodiment thereof and on examining the appended drawing, in which:

[0164] FIG. 1 is a side view of a spray device according to the invention,

[0165] FIG. 2 is a longitudinal section through the dispensing head of the device in FIG. 1,

[0166] FIG. 3 is a perspective view of the closure cap of the device in FIGS. 1 and 2,

[0167] FIG. 4 is a longitudinal section of FIG. 3 along IV-IV,

[0168] FIGS. 5 and 6 are perspective views of the body of the device in FIGS. 1 and 2,

[0169] FIG. 7 is a longitudinal section through the body in FIGS. 5 and 6,

[0170] FIGS. 8 and 9 are schematic and partial perspective views of the diffuser in FIGS. 1 and 2,

[0171] FIG. 10 is a bottom view along the arrow X in FIGS. 8 and 9,

[0172] FIG. 11 is a longitudinal section along XI-XI in FIGS. 8 to 10,

[0173] FIG. 12 is a view, similar to FIG. 7, of an alternative embodiment,

[0174] FIGS. 13 and 14 are partial longitudinal sections along XIII-XIII and XIV-XIV, respectively, in FIG. 12,

[0175] FIG. 15 is a perspective view of the diffuser in FIGS. 12 to 14,

[0176] FIG. 16 is a view, similar to FIG. 13, of the diffuser on its own,

[0177] FIG. 17 is a view of the diffuser in FIGS. 12 to 16 along the arrow XVII,

[0178] FIG. 18 is a side view of the body in FIGS. 12 to 17,

[0179] FIG. 19 is a view thereof along the arrow XIX,

[0180] FIG. 20 is a cross-sectional view thereof along XX-XX, and

[0181] FIG. 21 is a cross-sectional view thereof along XXI-XXI.

[0182] FIGS. 1 to 11 show a device 1 for spraying a composition, said device 1 comprising a container 2 containing the composition to be sprayed, and a dispensing head 3 which sits on top of the container 2. The initial pressure in the container is, for example, between 1 and 12 bar at 20° C.

[0183] The container 2 may comprise a valve holder cup (not shown) crimped onto a body of the container or formed in another way.

[0184] The dispensing head 3 comprises a body 5 arranged on the container 2 and cooperating with a diffuser 7. A closure cap 9, visible in FIGS. 3 and 4, is intended to cover the body 5 and the diffuser 7 when the device is not in use. The cap 9 comprises, for example, an annular relief 10 in order to allow it to be held on the container 2 with snap-fit engagement.

[0185] The body 5 and the diffuser 7 are configured to allow the composition to be sprayed in at least two different directions, of which there are four in the example described and are distributed uniformly about the axis Y of the diffuser. For this purpose, the diffuser 7 comprises four outlet orifices 12, visible in FIGS. 8 to 10, which will be described in detail below.

[0186] During the spraying of the composition, the composition stream coming from the container firstly passes through a central channel 25 of the body 5, which is intended to allow the composition to pass from the container 2 as far as the diffuser 7. This central channel 25 comprises a straight portion 25a, which extends in the longitudinal axis X of the device above the container, and an oblique portion 25b, which extends along the axis Y of the diffuser 7 and which is inclined by an angle γ relative to the straight portion 25a. The angle γ is of the order of 20 to 30°, for example.

[0187] The diffuser 7 comprises a central stem 28 allowing it to be fixed to the body 5, in the oblique portion 25b. It is fixed by being inserted by force and with snap-fit engagement. For this purpose, the central stem 28 comprises a fixation relief 30, such as an annular bead, intended to snap-fit behind a corresponding relief of the body 5.

[0188] The central stem 28 has a shoulder 34 in order to guarantee leaktightness.

[0189] Two longitudinal grooves 32 formed on the central stem 28 allow the composition to pass from the body 5 towards the diffuser 7. They are diametrically opposite each other in the example described. These grooves 32 are oriented along the axis Y of the diffuser. They may have a cross section that is partially circular.

[0190] In the diffuser 7, the composition stream passes through a first inner chamber 15 and a second outer chamber 16 concentric to the first.

[0191] The diffuser 7 comprises a separation skirt 18 between the first and second chambers 15 and 16. This separation skirt 18 is pierced with two apertures 20 to allow the composition stream to pass through. The latter is thus separated into four distinct streams, of which two opposite streams each emerge from the apertures 20. The latter are uniformly distributed on the circumference of the separation skirt 18, being diametrically opposite each other. Each aperture 20 preferably extends along the entire height h1 of the separation skirt 18, as is illustrated in FIG. 11. The height h1 of the separation skirt 18 is of the order of 2.5 or 4 mm, for example.

[0192] The second chamber 16 is surrounded by a peripheral skirt 22 of the diffuser 7, said peripheral skirt 22 cooperating with the body 5 in such a way as to ensure the closure of the second chamber 16. The peripheral skirt 22 comprises the four abovementioned outlet orifices 12 for ensuring the discharge of the composition to the outside. These outlet orifices 12 are distributed uniformly about the axis Y of the diffuser 7. They may each extend along the entire height h2 of the peripheral skirt or along only part thereof. This height h2 may be of the order of 1.9 or 5 mm.

[0193] The chambers 15 and 16 preferably have respective widths I1 and I2 of the order of 1.2 mm.

[0194] The outlet orifices 12 may comprise a lower portion, in the form of a slit of constant width formed in the bottom of the skirt 22, and an upper portion, which has a semicircular cross section and is formed in the top of the skirt 22, extending away from the shoulder 22a. The composition emerges from the device via the upper portion of the outlet orifices 12, the lower portion being masked and closed by the body 5.

[0195] The outlet orifices may each have a cross section of between 0.05 and 5 mm.sup.2, better still between 0.1 and 2 mm.sup.2, for example of the order of 1 mm.sup.2.

[0196] The outlet orifices may have any suitable geometric shape. In one embodiment, they may have a circular cross section.

[0197] The outlet orifices 12 are offset angularly relative to the apertures 20 of the separation skirt 18. For example, they are each offset by an angle α of the order of 45°, as illustrated in FIG. 10.

[0198] The apertures 20 are offset relative to the longitudinal grooves 32. For example, they are offset by an angle β of the order of 90°, as illustrated likewise in FIG. 10.

[0199] The body 5 comprises an annular groove 23 intended to receive the peripheral skirt 22 of the diffuser 7. This annular groove 23 is delimited by two concentric ribs 24a and 24b which are configured to engage on each side of the peripheral skirt 22. The two ribs 24a and 24b are continuous. They can bear against shoulders 22a and 18a, which are present on the separation skirt 18 and the peripheral skirt 22 respectively, when the body and the diffuser are assembled. They preferably have respective thicknesses e1 and e2 of the order of 0.7 mm. They form between them a distance d of the order of 1.25 mm. The rib 24b closes the lower portion of the outlet orifices 12.

[0200] The annular groove 23 and the ribs 24a and 24b are arranged at an end of the body opposite a mounting skirt 27 for mounting the body 5 on the container 2. The rest of the body, in particular the central channel 25 of the body, is connected to the mounting skirt 27 by a hinge 27a. The mounting skirt is preferably fixed with snap-fit engagement on the container, but it may also be fixed to the latter in another way.

[0201] The diffuser 7 has an upper face 35 with a generally curved shape, of which the radius of curvature is, for example, of the order of 6 mm.

[0202] The upper face 35 of the diffuser 7 has markers in the form of reliefs 36 with the general shape of a triangle, of which the point is oriented towards the edge of the upper face 35 and towards the peripheral skirt 22 in the alignment of the outlet orifices 12. The upper end 35 of the diffuser 7 likewise has a central depression 37, which has a circular contour and accommodates the injection sprue.

[0203] The composition stream undergoes at least two changes of direction in the diffuser 7. As illustrated in FIG. 9, the composition stream thus passes from a first direction A in the grooves 32 to a second direction B in the first chamber 15, the two directions A and B forming between them an angle of 90°. The composition stream then passes from the direction B to a direction C in the second chamber 16, with a change of direction of the order of 180°, then adopts a direction D corresponding to the emergence of the composition through an outlet orifice 12.

[0204] An alternative embodiment will now be described with reference to FIGS. 12 to 21. In this example, the outlet orifices 12 are formed in the diffuser 7 directly. They are formed in a curved portion of the diffuser 7, of hemispherical shape, having a radius of curvature of the order of approximately 6 mm.

[0205] The orifices 12 are each oriented outwards on an axis Z, which forms an angle δ with the axis Y of the diffuser. The angle δ is less than 90°, such that the resulting spray is of conical shape, with the composition being distributed all around the axis Y. The angle δ may be between 10 and 85°, better still between 20 and 80°, for example between 30 and 75°, or between 40 and 70°. It can be of the order of 60°, for example.

[0206] The dispensing head in FIGS. 12 to 21 also differs from that of FIGS. 1 to 11 in terms of the shape of the body 5. In this illustrative embodiment, the latter comprises a cannula 25b through which said channel 25 extends, this cannula having a longitudinal axis Y inclined relative to the longitudinal axis X of the container.

[0207] In addition, the mounting skirt 27 for mounting the body 5 on the container 2 is connected to the rest of the body by a hinge 27a situated, relative to the longitudinal axis X, on the same side as the inclination of the axis Y, in such a way that the longitudinal axis Y of the cannula of a movable part of the body 5 is substantially parallel to the longitudinal axis X of the container during the dispensing of the composition.

[0208] The invention is not limited to the examples that have just been described.

[0209] For example, the valve of the container can be triggered by being pushed down and not by tilting.

[0210] The number of outlet orifices may be modified, as may their orientation.

[0211] The axes of the outlet orifices, along which axes the sprays are emitted, may or may not be coplanar, or they may or may not be contained in the same cone of axis Y.

[0212] The example that follows serves to illustrate the invention.

EXAMPLES

[0213] In the examples that follow, all the amounts are indicated as weight percentage of product as active material relative to the total weight of the composition.

[0214] The following compositions were prepared from the compounds indicated in the table below.

TABLE-US-00002 1 2 3 Aluminium starch octenylsuccinate.sup.1 1.72% 1.72% — Calcium carbonate (D50 = 35 μm).sup.2 1.00% 5.00% 3.00% Hectorite modified with 0.50% 0.25% — distearyldimethylammonium chloride.sup.3 Polyvinylcaprolactam   2% — — VA/crotonates/vinyl neodecanoate — — 1.00% copolymer.sup.4 Octylacrylamide/acrylates/butylamin — —  4.5% oethyl methacrylate copolymer.sup.5 Aminomethylpropanol 0.85% Ethanol qs 100% qs 100% Qs 100% Dimethicone 0.48% — — Dimethiconol 0.06% — — Water 0.29% 0.28% — Butane   60%   70% — Dimethyl ether — —   40% .sup.1Sold under the trade name Dry Flo Plus by National Starch (86% AM) .sup.2Sold under the trade name Omyacare S60 by Omya .sup.3Sold under the trade name Bentone 38 by Elementis .sup.4Sold under the trade name Resyn 28-2930 by Akzo Nobel .sup.5Sold under the trade name Amphomer by AkzoNobel

[0215] Compositions 1 to 3 were packaged in a device D1 according to the invention as shown in FIGS. 12 to 21. It comprises the following characteristics: [0216] a 150 ml container containing the composition; [0217] a valve equipped with a nozzle with an orifice 0.5 mm in size and an internal restriction orifice for the valve body 0.8 mm in size, with an additional gas intake 0.40 mm in size, [0218] a dispensing head comprising a cannula which ends with a dome-shaped wall equipped with four outlet orifices of coplanar axes, perpendicular to the longitudinal axis (Y) of the cannula, and uniformly distributed about the axis Y, the four orifices being diametrically opposite in respective pairs. The outlet orifices have a cross section of 1 mm.sup.2. The dispensing head comprises two concentric chambers communicating via two apertures offset by an angle α of the order of 45° relative to the outlet orifices.

[0219] The compositions were sprayed on a malleable head of shoulder-length hair. The application is performed with the head hanging down, at the roots, followed by working with the fingers to spread the composition throughout the roots.

[0220] Imparting a good level of volume is achieved, while at the same time maintaining supple hair and a natural look.

[0221] An aerosol device D2 was moreover used to package composition 1 above. It comprises the following characteristics: [0222] a valve equipped with a nozzle with an orifice 0.64 mm in size and an internal restriction orifice 0.64 mm in size, with an additional gas intake 0.64 mm in size, [0223] a dispensing head sold by the company Lindal under the name Tribuse and described in patent application EP 2 991 612, equipped with three orifices whose outlet axes are in the same direction, with a direct outlet 0.5 mm in diameter.

[0224] Composition 1 is applied via these two aerosol devices in comparison on six volunteers. In both cases, the same amount of composition was sprayed. The application is performed at the root, by six sprays per half-head, followed by working with the fingers. Evaluation is performed after drying the product.

[0225] The performance in terms of ease of shaping was evaluated by experts on six volunteers, on a scale ranging from 0 (poor) to 5 (very good).

[0226] The grades and averages obtained are given below:

TABLE-US-00003 Composition 1 Composition 1 with D1 with D2 Expert 1 5 2.5 Expert 2 5 3.5 Expert 3 5 3.5 Expert 4 5 3.5 Expert 5 5 3.5 Expert 6 5 3.5 Ave. 5 3.3 Standard deviation 0.0 0.4

[0227] Device D1 according to the invention made it possible to improve the ease of shaping.