WO2022013498A1

WO2022013498A1 - Device for packaging and dispensing cosmetic product comprising a phase in the form of beads

Info

Publication number: WO2022013498A1
Application number: PCT/FR2021/051307
Authority: WO
Inventors: Marc Chevalier
Original assignee: L V M H Recherche
Priority date: 2020-07-15
Filing date: 2021-07-14
Publication date: 2022-01-20
Also published as: FR3112463A1; FR3112463B1

Abstract

A device (10) for packaging and dispensing cosmetic product comprises a vessel (12), defining a cavity (18) receiving a cosmetic product (P) comprising two phases (B, L). A first phase (L) is in liquid or gel form and a second phase (B) comprises beads immiscible in the first phase (L). The device (10) for packaging and dispensing cosmetic product (10) comprises a helical blade (36) mounted in rotation, with at least one hole (32). The helical blade (36) and the grating (30) are shaped to shear the beads driven through the grating (30), by rotation of the helical blade (36).

Description

Title: Cosmetic product packaging and dispensing device comprising a phase in the form of beads Technical field

[0001] This disclosure relates to the field of cosmetic product packaging and dispensing devices. The present disclosure relates more specifically to a device for packaging and dispensing a cosmetic product comprising two phases, of which a first phase is in the form of a liquid or a gel, and a second phase comprises beads.

Prior technique

[0002] Cosmetic products are known in the form of an emulsion, comprising two immiscible or difficultly miscible phases. Such cosmetic products thus comprise a plurality of bodies or beads, dispersed in a continuous phase. The beads may comprise a solid envelope, to avoid contact between the product in the envelope and the product forming the continuous phase.

[0003] It may then be desired to shear the beads, as late as possible, just before dispensing and applying the cosmetic product.

[0004] To this end, the document FR-A-2 994536 describes an example of a device for dispensing a fluid composition comprising a container containing a heterogeneous mixture comprising particles in suspension, a delivery element, placed in the container, to transform the heterogeneous mixture into a fluid composition, and a pump to dispense the fluid composition out of the device. The dispensing element comprises a fluid guide conduit, comprising an upstream opening opening into the container, a central passage, and a downstream opening connected to the pump. The dispensing element also comprises a filtration member, mounted in the guide duct. The filtration unit is configured so that the heterogeneous mixture introduced into the guide conduit through the upstream opening passes through the filtration unit. The filtration member comprises at least one filtration wall forming a non-zero angle with a perpendicular to the axis of the guide duct.

[0005] However, such a device presents risks of clogging of the filtration device. In particular, the suction of the pump may not be sufficient to shear the balls in contact with the filtration unit, in particular if too many balls reach the openings of the filtration unit at the same time.

[0006] Furthermore, KR-U-200449 581 describes a cosmetic product packaging and dispensing device comprising a reservoir, in which a piston is immersed. The piston takes the form of a disc, mounted on a screw. The screw is attached to a tank cover, rotatably mounted. The screw has, near the top of the reservoir, an opening in fluid communication with a dispensing orifice formed on the lid. Thus, the rotation of the cover relative to the rest of the tank causes the piston to rise in the tank. This rise of the piston pushes part of the contents of the tank towards the opening in the screw, up to the dispensing orifice.

[0007] Finally, FR-A-2 814 447 describes a device for dispensing a cream or a liquid. The device makes it possible to dose and, at the same time, to mix the product contained in the pot. The device comprises a base provided in its center with a screw, a body and a cover. The body, in the form of a sleeve, defines with the base, a reservoir. The flat surface of the socket-shaped body is provided with a dispensing orifice. The base is fixed on the body. The base has a screw that extends into the tank. A deformable endless screw is screwed onto the base screw. The endless screw comprises, at a first end, a disc-shaped portion, having a lip in contact with the internal wall of the body. At its second end, the worm is snapped into the body. The body is rotatably mounted on the base, such that rotation of the body relative to the base causes rotation of the worm, as well as compression thereof. The rotation of the auger allows the contents of the tank to be mixed. Concomitantly, the disk-shaped portion of the endless screw is moved in the direction of the dispensing orifice, thus pushing part of the contents of the reservoir towards this dispensing orifice. Summary

[0008] This disclosure improves the situation.

[0009] To this end, a cosmetic product packaging and dispensing device is proposed comprising a reservoir, defining a cavity intended to receive a cosmetic product comprising two phases, a first phase in the form of liquid or gel, a second phase comprising beads that are immiscible in the first phase, the cosmetic product packaging and dispensing device comprising at least one propeller mounted rotatably around an axis, and a grid, with at least one hole, preferably a plurality of holes , a portion of the propeller being preferably in contact with the grid, the propeller and the grid being shaped to shear the balls driven through the grid, by the rotation of the propeller.

[0010] Thus, advantageously, the device according to the invention makes it possible to keep the second phase in the form of beads substantially until the removal of the cosmetic product. Just before this sampling, the propeller ensures that the balls do not remain blocked on the surface of the grid and do not close the holes in the grid, by forcing the passage of the balls through the holes, thus causing the shearing of the balls . The composition of which the beads are formed can then be mixed with the liquid or gel phase of the cosmetic product. [0011] The cosmetic product packaging and dispensing device may comprise one or more of the following characteristics, taken alone or in combination:

- the helix extends over an angular sector, relative to the axis of rotation of the helix, between 90° and 320°, in particular 180°, the helix preferably comprising a substantially planar portion or an edge in the vicinity or in contact with the grid;

- the cosmetic product packaging and dispensing device comprises a plurality of coaxial propellers;

- the grid is substantially normal to the axis of rotation of the propeller, the grid being preferably circular, with axis the axis of rotation of the propeller;

- the grid has a non-zero height, in the direction of the axis of rotation of the propeller, the grid being preferably symmetrical with respect to the axis of rotation of the propeller, the grid being more preferably of rotational symmetry with respect to the axis of rotation of the propeller;

- the diameter of the grid is substantially equal to the diameter of the propeller;

- the propeller is integral in rotation with a plate closing the cavity in the tank, the plate being rotatably mounted relative to the tank, around the axis of rotation of the propeller;

- the cavity comprises a first chamber, at least partly cylindrical with an axis of the axis of rotation of the propeller, a piston being received in the first chamber, movable in the direction of the axis of rotation of the propeller;

- the plate is connected to the propeller by a rod extending in the direction of the axis of rotation of the propeller, the piston having a through hole allowing the passage of the rod;

- the rod has a thread and the through hole has a thread complementary to the thread of the rod;

- the piston has a cross section complementary to the cross section of a cylindrical portion of the first chamber, the cross section of the piston preferably being non-circular, in particular elliptical or polygonal;

- The first chamber has a flared wall, in the vicinity of the grid, the piston preferably having a surface, oriented towards the grid, of substantially complementary shape to the flared wall of the first chamber;

- the grille separates the first bedroom from a second bedroom;

- the second chamber is in fluid communication with a cosmetic product dispensing orifice via a duct passing through at least one wall of the reservoir;

- the second chamber is in fluid communication with a dispensing orifice through at least one duct extending through the stem, the stem extending through the grid, the dispensing orifice preferably being flush with the plate;

- the cosmetic product packaging and dispensing device comprises a base receiving the reservoir, the base preferably forming the bottom of the cosmetic product packaging and dispensing device; - the reservoir is at least partially transparent or translucent, the reservoir preferably being opaque with at least one transparent or translucent window, the reservoir and/or the at least one window preferably being made of glass, crystal, or material plastic;

- the reservoir contains cosmetic product, the cosmetic product comprising two phases, a first phase of the cosmetic product preferably being in the form of a liquid or a gel, the second phase being composed of beads that are immiscible in the first phase, the diameter of at at least one hole in the grid being less than an average diameter of the balls of the second phase;

- the at least one helix has at least one lug on its face facing the grid, the at least one lug preferably being in contact with the grid; and

- the cosmetic product packaging and dispensing device comprises at least one second propeller for mixing the cosmetic product, the at least one second propeller being arranged downstream of the grid in the direction of travel of the cosmetic product in the packaging device and distribution, the at least one second helix preferably being arranged in the vicinity of the grid.

Brief description of the drawings

[0012] Other characteristics, details and advantages will appear on reading the detailed description below, and on analyzing the appended drawings, in which:

[0013] Figure 1 schematically shows a first example of a cosmetic product packaging and dispensing device from the front.

[0014] Figure 2 schematically shows an exploded view of a first subassembly of the cosmetic product packaging and dispensing device of Figure 1.

[0015] Figure 3 schematically shows in longitudinal section, a tank that can be implemented in the subassembly of Figure 2.

[0016] FIG. 4 schematically represents a longitudinal section of the cosmetic product packaging and dispensing device of FIG. FIG. 5 schematically represents an exploded view of a second subassembly of the cosmetic product packaging and dispensing device of FIGS. 1 and 4.

[0018] Figure 6 schematically shows a top view of a grid that can be implemented in the second subassembly of Figure 5.

Figure 7 schematically shows a detail of Figure 6.

[0020] FIG. 8 schematically represents a longitudinal section of a second example of a cosmetic product packaging and dispensing device. [0021] Figure 9 shows a propeller variant that can be implemented in a packaging and distribution device.

FIG. 10 schematically represents a longitudinal section of a third example of a cosmetic product packaging and dispensing device. FIG. 11 schematically represents a longitudinal section of a fourth example of a cosmetic product packaging and dispensing device.

Description of embodiments

[0024] The drawings and the description below contain, for the most part, certain elements. They may therefore not only serve to better understand this disclosure, but also contribute to its definition, where applicable.

[0025] In the remainder of the description, identical elements or identical functions of the various examples bear the same reference sign. For the sake of brevity of this description, these elements are not described in detail for each example, only the differences distinguishing the examples being described in detail. [0026] As illustrated in Figure 1, a device 10 for packaging and dispensing a cosmetic product essentially comprises a reservoir 12 of cosmetic product, a cover 14 and a base 16.

The reservoir 12 contains a cosmetic product P comprising two phases. A first phase L is in the form of a liquid or a gel, that is to say a more or less viscous liquid. The second phase comprises, or preferably consists of, beads B.

The cosmetic product P contained in the reservoir 12 of the device 10 is for example a cosmetic product cited in the Council Directive on the approximation of the laws of the Member States relating to cosmetic products (76/768CEE/OJ L 262 of 27.9. 1976, p.169). This cosmetic product P is for example a cream, an emulsion, a lotion, a gel or an oil for the skin, in particular for the body, the hands, the face, the eye contour and/or the feet, a foundation , in particular liquid, a beauty mask, a toilet soap, a deodorant soap, a perfume, an eau de toilette, an eau de Cologne, a bath and/or shower preparation, a hair care product, such as a hair dye , a bleach, an undulating care, a straightening care, a fixing care for styling and cleansing, a maintenance care for the hair, in particular in the form of a lotion, cream, oil, a styling care, in particular in in the form of lotion, lacquer, brilliantine, a cleaning product, in particular in the form of a lotion or shampoo, a shaving product, in particular a shaving foam or lotion, a make-up product, a product for removing make-up from the face and/or eyes, a product intended to be applied to the lips, a product for nail care and make-up, a sunscreen product, a sunless tanning product, a skin whitening product, an anti-wrinkle product.

The cosmetic product P advantageously comprises a continuous medium L in the form of a more or less viscous composition, in particular in the form of a homogeneous gel, without macroscopic particles in suspension. By "macroscopic particles" is meant in particular a particle whose largest transverse dimension is greater than 200 μm, in particular greater than 500 μm. The fluid composition L of the cosmetic product P is thus advantageously in the form of a first pure liquid fluid, a solution of a fluid in a liquid solvent, or a dispersion such as an emulsion or a suspension of fluid in a liquid, the dispersed elements being invisible to the naked eye. The viscosity of the fluid composition L is generally between 50 mPa.s and 20,000 mPa.s. In particular, this viscosity is between 2,000 mPa.s and 15,000 mPa.s. This viscosity is measured by the following method.

A Brookfield DV-II type viscometer is used with a spindle (Spindle) of size (No.) 05. About 150 g of composition L are placed in a beaker 250 ml in volume, having a diameter of about 7 cm so that the height of the volume occupied by the 150 g of composition L is sufficient to reach the gauge marked on the mobile. Then, we start the viscometer on a speed of 10 RPM and wait for the value displayed on the screen to be stable.

The cosmetic product P comprises, in addition to the continuous medium L, a plurality of beads B (or particles) in suspension in the continuous medium L. The mass fraction of beads B in the cosmetic product P, taken as the total mass of the balls B relative to the sum of the masses of the balls B and of the continuous medium L is greater than 1%, advantageously greater than 10%, in particular 20% or even 50%. Balls B are macroscopic. Balls B are thus visible to the naked eye. The average diameter D of the balls B is for example greater than 1 mm, preferably greater than 2 mm. The average diameter D of the balls is for example less than 8 mm, preferably less than 5 mm. Balls B are advantageously deformable, in particular elastically or plastically deformable over a range of deformation greater than 5% in compression between two flat surfaces. As a variant, the balls B are solid, and have a very low deformation, in particular less than 1%.

The deformation of the balls B is characterized by an increase in the area of the balls B, following the application of a mass to a series of balls B. The observation of the deformation of the balls B is for example carried out using the following assembly: The samples comprising six balls B are placed on a transparent glass plate. A first shot is recorded in order to be able to measure the initial area of the balls B. Then a second glass plate is placed on the balls B, and the weight is adjusted so that the mass of the second glass plate plus the ballast corresponds to 100 times the mass of the initial sample (ie 600 times the weight of a ball B). A second shot is recorded 5 minutes after having weighted the second glass plate. The recorded snapshots are then processed by computer. The measurement of the areas before and after deformation are obtained, for example in pixels. The value averaged over the number of samples of the ratios (final area - initial area)/initial area, corresponds to the deformation value.

In a first example, all the balls B are similar or analogous. In this case, all the balls B are of identical composition. Alternatively, however, the cosmetic product P can comprise several types of beads B, in particular of different compositions. The balls B are preferably homogeneous. Thus, preferably, the beads B do not comprise an envelope, in particular a gelled envelope. Balls B can also have identical or different geometries.

[0034] Advantageously, the balls B are mono-dispersed. By “mono-dispersed”, it is meant that the beads B have a coefficient of variation Cv in size of less than 10%. To calculate the coefficient of variation Cv, the average diameter D of the balls is for example measured. The diameter Di of each ball is measured, then the mean diameter D is obtained by calculating the arithmetic mean of these values Di. From these Di values, it is also possible to obtain the standard deviation of the diameters Di of the balls B of the dispersion. To characterize the "mono-dispersity" of the balls B according to this example, one can calculate the coefficient of variation Cv equal to the ratio of the standard deviation to the mean diameter D of the balls B. The coefficient of variation Cv of the diameters Di of the balls B of the population according to this example is less than 10%, preferably less than 5%.

In a particular example, the continuous medium L is formed by a gelled solution, for example by an aqueous gel, in particular alone or in combination, a gel of hyaluronic acid, xanthan, polysaccharides, cellulose, gum guar or oligogeline. The viscosity of the continuous medium L is here greater than 1000 mPa.s, in particular between 3000 mPa.s and 10,000 mPa.s. The continuous medium L thus has the consistency of a gel, sufficiently viscous to allow the suspension of the balls B. However, it is also sufficiently shear-thinning to entrain the balls B with it during its distribution.

According to the example illustrated, the tank 12 has an external shape with rotational symmetry, with axis the median axis A of the tank 12 (hereinafter the axis A of the tank 12). As more clearly visible in Figures 2 and 3, the reservoir 12 defines a cavity 18. The cavity 18 here has four sections, in order, from the outlet 18d of the cavity 18 to the bottom 18f of the cavity 18:

- A first section 18i, emerging, cylindrical, here of elliptical section;

- a second section 182, passing continuously from an elliptical section, in the vicinity of the second section 182, to a circular section in the vicinity of the third section 183, the circular section having a diameter Dis less than the lengths of the small and major axes of the elliptical section;

- A third section 183, cylindrical, here of circular section, of diameter D18; - A fourth section 184, in the shape of a bowl, here of circular section, of diameter less than the diameter D18 of the third section.

[0037] All the sections I 81-I 84 of the cavity 18 are coaxial, with axis the central axis A of the reservoir 12.

The fourth section 184 is provided with lugs 19, which extend from the bottom 18f of the cavity 18. The lugs 19 are for example one-piece with the reservoir 12. The lugs 19 here are four in number. The lugs 19 are evenly distributed angularly around the median axis A of the tank 12. The lugs 19 are here cylindrical. In the example illustrated in Figure 3, the lugs 19 have a substantially trapezoidal cross-section. Other shapes and other embodiments of the lugs 19 are accessible to those skilled in the art.

The tank 12 also has an edge 20, around the outlet 18d of the cavity 18. The edge 20 defines a rib 22 circular. The rib 22 here has a triangular cross-section. Other sections are of course possible, in particular an oval, elliptical, square, rectangular, octagonal or more generally polygonal section. The edge 20 of the reservoir 12 thus does not have a cross-section of constant thickness. Indeed, the edge 20 surrounds the elliptical outlet 18d of the cavity 18, while defining an outer surface of the tank 12, circular. At the level of the rib 22, the tank 12 has a diameter D22.

The tank 12 still defines a bead 24 circular. The bead 24 is arranged under the rib 22. In other words, the bead 24 is farther, in the direction of the axis A of the cavity 18, from the outlet 18d of the cavity, than the rib 22. At the level of the circular bead 24, the reservoir 12 has a diameter D24, greater than the diameter D22 of the circular rib 22. In addition, the diameter D24 of the reservoir 12 at the level of the bead 24 is less than the diameter D12 of the reservoir 12, that is to say i.e. to the maximum diameter of the tank 12.

In the vicinity of the bottom 12f of the tank 12, at the end opposite the outlet 18d of the cavity 18, the tank 12 has a shoulder 26. The bottom 12f of the tank 12 also has a circular groove 28, here of rectangular section .

The reservoir 12 may in particular be transparent or translucent. This allows the user to see the cosmetic product contained in the cavity 18 of the reservoir. Alternatively, however, reservoir 12 may be fully opaque or partially opaque. In particular, reservoir 12 can be opaque with at least one transparent or translucent window.

[0043] The reservoir 12 and/or the at least one window, if applicable, may/may in particular be made of one of: glass, a plastic material.

The cover 14 here has the shape of a bowl, of circular section. The cover 14 thus has a cylindrical portion 14i and a plane portion 142, in the shape of a disk, at one end of the cylindrical portion 14i. The cover 14 has an external diameter substantially equal to the diameter D12 of the tank 12, so as to extend in the extension of the tank 12. The device 10 thus has the general shape of a cylinder, presenting a certain aesthetic appearance. The internal diameter of the lid 14 is substantially equal to the diameter D24 of the tank 12 at the level of the bead, to allow the lid 14 to be fixed on the tank 12, by elastic fitting, by means of the bead 24 on the tank 12. Alternatively, the cover 14 can in particular be fixed on the reservoir 12 by screwing. The base 16 here has the shape of a bowl, of circular section. The base 16 thus has a cylindrical portion 16i and a plane portion 162, in the shape of a disc, at one end of the cylindrical portion 161. The base 16 has an outer diameter substantially equal to the diameter D12 of the tank 12. This makes it possible to ensure an aesthetic appearance of the device 10, which has the general shape of a cylinder. In addition, the base 16 has an internal diameter substantially equal to the diameter of the reservoir 12 at the level of the shoulder 26 and a height substantially equal to the height of the shoulder 26. Thus, the base 16 is shaped to receive substantially all the part of the tank 12 on which the shoulder 26 is formed.

Alternatively, the device 10 can have any desired shape. The device 10 can in particular be cylindrical, but of different section, non-circular. The section can then be chosen according to the desired design.

The base 16 can be removable or not. The base 16 can be assembled on the tank 12, in particular by screwing, clipping (or elastic interlocking) or any other means accessible to those skilled in the art.

The cover 14 and / or the base 16, removable or not removable, can / can for example be made of a material opaque to light.

The cover 14 and/or the base 16 may/may in particular be one of: glass and a plastic material.

As is more clearly visible in Figures 4 and 5, the device 10 also comprises a grid 30. The grid 30 is here of generally circular shape, of diameter D30 substantially equal to the diameter D18 of the third portion 183 of the cavity 18. Thus, the grid 30 can be received in the third portion 183 of the cavity 18. In addition, the diameter of the fourth portion 184 of the cavity 18 being of smaller diameter, the grid 30 can rest substantially at the bottom of the third portion 183 of the cavity 18, without risk of being moved. The grid 30 thus separates a first chamber 60 in the cavity 18, substantially grouping together the first, second and third portions 181, 182, 183 of the cavity 18, from a second chamber 62, corresponding to the fourth portion 184 of the cavity 18 . The grid 30 here comprises a plurality of holes 32. The holes 32 have a diameter D32 less than the average diameter D of the balls of the second phase B of the cosmetic product P. For example, the diameter D32 of the holes 32 is greater than or equal to 0.3 mm and/or less than or equal to 0.5 mm. The diameter D32 of the holes 32 is in particular 0.4 mm.

The holes 32 can be regularly distributed over the surface of the grid 30 or not. For example, the holes 32 are regularly distributed angularly on concentric circles, so that the minimum distance d32 between two neighboring holes 32, belonging to two distinct concentric circles, is equal to the radius of a hole 32.

The grid 30 also has a central hole 34. The hole 34 has a diameter that is significantly larger than the other holes 32, in particular at least ten times larger, preferably at least twenty times larger.

The device 10 further comprises a propeller 36. The propeller 36 has a diameter D36 substantially equal to the diameter D18 of the third section 183 of the cavity 18. The propeller 36 can thus be received in the third section 183 of the cavity 18, facing the grid 30. The propeller 36 received in the third section 183 of the cavity 18, is of axis the axis A of the tank 12.

By propeller is meant here a blade of which at least a portion extends along a main line of helical extension. The blade, in particular the main line of helical extension, extends for example over an angular sector, around the axis A of the reservoir 12, of amplitude greater than or equal to 180° and/or less than or equal to 320° . Thus, advantageously, the helix 36 defines an angular window between its two longitudinal ends.

The helix 36 can be regular or perfectly helical. In this case, the blade forming the helix 36 consists of the portion extending along the main line of helical extension. Alternatively, however, helix 36 may be irregular. The propeller 36 may in particular have a progressive or irregular slope. For example, the blade forming the helix 36 comprises other portions than that which extends along a main line of helical extension. In particular, the propeller 36 may have a flat portion, in the form of a ring portion, at one end, in particular at its end adjacent to the grid 30, or even in contact with the grid 30.

Preferably, one end of the helix 36 is in contact with the grid 30. The helix 36 can also be in contact with the grid, over an entire end portion, the end portion being extending in a plane normal to the axis A of the helix 36. The other end of the helix 36 is at a distance, according to the direction of the axis A of the tank 12, from the grid 30.

The propeller 36 is integral here, preferably integral with a threaded rod 38. The threaded rod 38 extends here in the direction of the axis A of the reservoir 12. At an end adjacent to the propeller 36, the threaded rod 38 has a stud 40 received in the central hole 34 of the grid 30. The stud 40 is here resting on the lugs 19 at the bottom of the cavity 18. At its opposite end, the threaded rod 38 has longitudinal grooves 42. In the example illustrated, the threaded rod 38 comprises four longitudinal grooves 42, regularly distributed angularly around the axis A of the tank 12. Furthermore, in the example illustrated, the threaded rod 38 forms a conduit 44 , inside the threaded rod 38, extending between the two longitudinal ends of the threaded rod 38. Here, the conduit 44 is straight, with axis the axis A of the threaded rod 38.

The threaded rod 38 is here fixed to a plate 46, integral in rotation around the axis A of the threaded rod 38. The plate 46 has for example a bowl shape, with a cylindrical part 46c, and a portion of bottom 46f of circular section. The plate 46 can however have any desired shape, in particular flat, convex or concave.

The cylindrical part 46c has an inside diameter substantially equal to the diameter D22 of the reservoir 12 at the level of the rib 22, in order to allow the plate 46 to be fixed to the reservoir by elastic fitting. Here, moreover, the cylindrical part 46c has a circular groove 48 of section complementary to the section of the rib 22, the circular groove 48 being intended to receive the rib 22 to carry out the elastic fitting of the plate 46 on the reservoir 12.

The connection between the plate 46 and the tank 12 allows relative rotation of one with respect to the other. Of course, other fixing means accessible to those skilled in the art can be implemented to fix the plate 46 on the reservoir 12.

The cylindrical part 46c here has an outer diameter, smaller than the diameter D24 of the tank at the level of the bead 24, so as not to disturb the fixing of the cover 16 on the tank 12, by elastic fitting of the bead 24 on the cover 16 .

The bottom 46f of the plate 46 here has a concave shape. In the center, the bottom 46f of the plate 46 has an opening receiving the end of the threaded rod 38, such that the orifice 44s of the conduit 44, allowing the dispensing of the cosmetic product, is flush with the surface of the bottom 46f of the plate 46. In addition, the bottom 46f of the plate 46 has a relief 46r, here cylindrical, oriented towards the bottom of the cavity 18 in the reservoir 12. The relief 46r has a central hole, with axis the axis A of the reservoir 12, and longitudinal ribs (not visible in the figures). The longitudinal ribs in the relief 46r are complementary to the longitudinal grooves 42 on the threaded rod 38. The complementarity of shapes of the longitudinal ribs in the relief 46r and the longitudinal grooves 42 on the threaded rod 38 makes it possible to secure the plate 46 and the threaded rod 38 in rotation around the axis A of the tank 12.

Other connecting means, accessible to those skilled in the art, can of course be implemented to connect the threaded rod 38 and the plate 46.

The device 10 further comprises a piston 50. The piston 50 here has the shape of an elliptical disc, of section complementary to the section of the first portion 18i of the cavity 18, in which the piston 50 is received. The piston 50 delimits, with the grid 30, the first chamber 60 in the cavity 18.

Other shapes of the piston 50 are accessible to those skilled in the art, with a section complementary to the section of the cavity 18. The piston 50 can in particular be cylindrical with an oval, polygonal or circular section, with a system of anti-rotation in the cavity 18 in the latter case.

In order to facilitate the filling of the reservoir 12, the disc-shaped part of the piston 50 may have a through orifice, which is plugged after the filling the reservoir 12, by any suitable system accessible to those skilled in the art, such as a screw, a clipped cap, a welded cap or a cover fixed above the orifice.

The piston 50 also includes a central hole 52 with a complementary thread to the thread of the threaded rod 38. The threaded rod 38 passes through the hole 52 in the piston 50. The piston 50 has a face 50i, oriented in the direction of the helix 36 of substantially complementary shape to the surface 12t of the second portion 182 of the cavity 18 in the reservoir 12. On its opposite face, the piston 50 has ribs 54 for reinforcement. In this case, the reinforcing ribs 54 are directed in a rectilinear direction from the geometric center of the piston 50, towards the outer edge.

The piston 50 further comprises, in the example shown, two peripheral lips 56, 58, defining the edge of the piston 50. The two lips 56, 58 are spaced apart in the direction of the axis A of the tank, so to form a groove 61 between the two lips 56, 58. The two lips 56, 58 are here one piece with the rest of the piston 50. Alternatively, the two lips 56, 58 can be attached to the rest of the piston 50. The two lips 56, 58 are in contact with the internal wall 12c of the tank 12, defining the first section I81 of the cavity 18. The two lips 56, 58 thus seal the first chamber 60 in the tank 12.

Of course, the two lips 56, 58 are optional. Alternatively or in addition, an O-ring can be implemented around the piston 50, to ensure sealing between the piston 50 and the wall of the cavity 18.

The device 10 can be implemented as follows.

[0073] After removal of the cover 14, the user grasps the tank 12 and, possibly, the base 16 with a first hand, and the plate 46 with his second hand. The user then pivots the plate 46 relative to the reservoir 12, around the axis A of rotation of the propeller 36. The rotation of the plate 46 relative to the reservoir 12, causes a rotation of the threaded rod 38, integral in rotation of the lid 46, relative to the piston 50, integral in rotation with the reservoir 12, by complementarity of shape of the piston 38 and the cross section of the cavity 18, not circular. The rotation of the plate 46 thus controls a displacement of the piston 38 towards the bottom of the cavity 18. The piston 46 thus pushes cosmetic product P towards the propeller 36. In particular, cosmetic product P is pushed through the opening between the two longitudinal ends of helix 36. Cosmetic product is thus found between helix 36 and grid 30.

The rotation of the lid 46 also causes a rotation of the propeller 36 around its axis A. Thus, the propeller 36 pushes the cosmetic product trapped between the propeller 36 and the grid 30, towards the grid 30, in a first time, then against the grid 30. The helix 36 thus forces the two phases L, B of the formula, in particular the balls of the cosmetic product P in contact with the grid 30, to cross the grid 30 where the balls are sheared . The cosmetic product that the balls B contain then mixes with the first phase L, crossing the grid 30, so as to form a more or less homogeneous mixture in the second chamber 62.

The propeller 36, by its rotation creating an overpressure on the formula in the chamber 62, also pushes the product contained in the second chamber 62 towards the conduit 44 through the threaded rod 38, up to the orifice of distribution 44s where the cosmetic product delivered can be single-phase or two-phase, with, in this case, fragmented balls of diameter advantageously smaller than the diameter of the balls in the first chamber 60 of the reservoir 12.

Reference is now made to Figure 8 which schematically illustrates a variant 100 of the dispensing device 10 of Figures 1 to 7.

According to this variant 100, the threaded rod 38 integral with the propeller 36 can be solid, the second chamber 62 being in fluid communication with the distribution orifice 44s through a duct 63 crossing here the bottom wall of the reservoir 12 and a first plate 46 fixed to reservoir 12.

Here, a second plate 64 replaces the base 16 of the cosmetic product packaging and dispensing device 10 previously described. The second plate 64 is mounted free to rotate with respect to the tank 12, around the axis A of the propeller. The second plate 64 rotates the threaded rod 38. It is thus possible, by controlling the rotation of the second plate 64 relative to the tank 12, around the axis A of rotation of the propeller 36, to cause a displacement of the piston 50 towards the dispensing orifice 44s. Here too, the balls of the cosmetic product are burst by being sheared between the grid 30 and the propeller 36, driven in rotation by the rotation of the second plate 64. The rotation of the propeller 36 also pushes the cosmetic product included in the second chamber 62 towards the dispensing orifice 44s, through the duct 63, formed here in the wall of the tank 12 and through the plate 46.

[0079] A seal or any other sealing element accessible to those skilled in the art can be implemented to ensure sealing between the plate 46 and the tank 12.

[0080] Figure 9 schematically illustrates a variant of the propeller 36, which can be implemented in the packaging and distribution devices described above. As illustrated, this helix 36 comprises lugs 66. Each lug 66 extends for example in the direction of the grid 30. Each lug 66 can come into contact with the grid 30. Thus, the rotation of the helix 36 makes it possible to scrape grid 30 in order to limit or even prevent clogging of grid 30. According to FIG. 9, lugs 66 are on the helical portion of helix 36. Alternatively, however, lugs 66 may be on a flat the helix 36. The lugs 66 are here arranged in two rows, but each helix 36 may comprise only one row of lugs 66 or more than two rows of lugs 66. The rows of lugs 66 may be staggered, in particular along a substantially radial direction. In other words, a lug 66 of one row is arranged radially between two lugs 66 of another neighboring row (but angularly offset around the axis A of rotation of the propeller). Thus, the lugs 66 can scrape a larger surface of the grid 30, or even the entire surface of the grid 30, in particular when the diameter of the helix 36 is equal to the diameter of the grid 30.

[0081] Figure 10 schematically illustrates in section, a second variant 200 of the dispensing device 100 of Figure 8.

According to this second variant 200, the propeller 36 is integral in rotation with at least one second propeller 68, intended to mix the cosmetic product just before its removal, after the content of the beads has been mixed with the liquid phase. or freeze. Thus, the at least one second propeller 68 is in the second chamber 62. In other words, the grid 30 is arranged between the at least one propeller 36 previously described, and the at least one second propeller 68. The at least one second propeller 68 is thus arranged downstream of the grid 30, in the direction of travel of the cosmetic product in the cosmetic product packaging and dispensing device 200, from the reservoir 12 to its sampling point.

In particular, at least two second propellers 68 may be provided, preferably at least three second propellers 68, even more preferably at least six second propellers 68.

To ensure the connection in rotation of the propellers 36, 68, there is provided here a screw 70, securing the propellers 36, 68 to the threaded rod 38. It can also be noted that the at least one second propeller 68 is here integral with cylindrical relief received in a complementary cylindrical relief, integral with the at least one helix 36. The screw 70 is here screwed only to the threaded rod 38. The helices 36, 68 are held tight between the head 72 of screw 70 and threaded rod 38.

The screw head 72 is here segmented. The screw head 72 has for example two, three, four or more parts, separated two by two by radial grooves. Thus, the rotation of the screw head 72 contributes to mixing the cosmetic product in the second chamber 62, just before its removal.

Furthermore, in the example shown, the bottom 74 of the reservoir 12 delimits the second chamber 62 and the duct 63 through which the cosmetic product is taken.

[0087] Here, the bottom 74 of the reservoir 12 also forms a relief 76 of a shape substantially complementary to the contour of the screw head 72, making it possible to receive the screw head 72 free to rotate around the axis A of the reservoir 12. The screw 70 thus held in position, makes it possible to limit or even prevent the deformations of the helices 36, 68 and/or of the grid 30.

[0088] It can also be noted that the cover 14 here has a pin 78 received in whole or in part in the conduit 63, when the cover 14 is fixed to the tank 12. Alternatively, the pin 78 is pressed against the edge of the duct opening 63, when the cover 74 closes the packaging and dispensing device. The barb 78 may in particular be made of a flexible material, such as a silicone, a thermoplastic material (TPE), in particular a thermoplastic polyurethane (TPU) or a low density polyurethane (LDPE). The pin 78 thus makes it possible to plug, preferably in a sealed manner, the opening of the duct 63 delivering the cosmetic product, when the cover 14 is in position. This limits or even prevents the risk of the cosmetic product drying in the duct 63, which could block this duct 63.

The lid 14 is also screwed onto the reservoir 12, in the example of Figure 10. To do this, a threaded sleeve 80 is here mounted on the reservoir 12, the lid 14 having a complementary thread.

In order to facilitate the filling of the reservoir 12, the disc-shaped part of the piston 50 here has a through orifice, which is blocked, after the filling of the reservoir 12, everywhere suitable system accessible to those skilled in the art. , here a stopper 82. Thus, it is possible to deliver the packaging device empty, with the piston in its furthest position from the grid 30, to fill the reservoir 12 with the cosmetic liquid, then to plug the orifice in the piston 50. This represents an ease of assembly of the packaging and dispensing device 200.

FIG. 11 illustrates yet another variant 300 of a cosmetic product packaging and dispensing device. This third variant 300 differs from the variant 200 of FIG. 10, essentially by the production of the cosmetic product container.

[0092] Thus, here, the bottom 74 of the tank 12 is perforated, to allow the fixing of the threaded rod 38 with the second plate 64, by means of a screw 84. A seal 86 is provided between the bottom of the tank 12 and the threaded rod 38.

The second plate 64, free to rotate relative to the tank 12, is here made in two parts: a first part 64i, interior, more rigid and a second part 642, exterior, more flexible. The two parts 64i, 642 have a socket shape. The two parts 64i, 642 are integral in rotation by means of radial pins 88, for example four pins 88, which are guided in rotation around the tank 12, by a groove in the outer face of the tank 12. The second part 642 may in particular be made of plastic material, in particular elastomer.

The opening of the reservoir 12, on the side opposite its bottom 74, is here closed by means of a plate 46 attached to the reservoir 12. Here, the plate 46 is fixed to a clipping ring 88, clipped onto tank 12. A seal 90 is provided between clipping ring 88 and tank 12.

The plate 46 defines according to the example shown the duct 63 through which the cosmetic product passes before being removed and the relief 76 for guiding the screw head 72 in rotation.

Of course, the present disclosure is not limited to the examples described above, but it is capable of numerous variants accessible to those skilled in the art.

The technically compatible teachings of the various examples described can for example be combined.

In addition, several propellers 36, preferably coaxial, can be implemented. In particular, several propellers 36 can be integral with the same threaded rod. Several propellers 36, for example identical, can be angularly offset relative to each other.

Also, in the examples illustrated, the grid is made in the form of a plate having openings. But other forms of the grid are accessible to those skilled in the art. In particular, the grid can take the form of a grater, a succession of strips or any other form making it possible to shear the beads of the cosmetic product. By "grater" is meant here a grid having roughness in the vicinity of the holes, in particular on at least a portion of the edge of the holes, preferably on the entire edge of the holes. These roughnesses can make it possible to improve the shearing of the balls.

[0100] The grid may also not be flat. The grid can thus have a non-zero height in the direction of the axis of rotation of the propeller 36. The grid is preferably symmetrical with respect to the axis A of rotation of the propeller 36. more preferred, the grid is rotationally symmetrical with respect to the axis A of rotation of the helix 36. The grid is for example conical or frustoconical.

Claims

[Claim 1] Device (10, 100, 200, 300) for packaging and dispensing a cosmetic product comprising a reservoir (12), defining a cavity (18) intended to receive a cosmetic product (P) comprising two phases (B, L), a first phase (L) in the form of a liquid or a gel, a second phase (B) comprising beads that are immiscible in the first phase (L), the cosmetic product packaging and dispensing device (10) comprising at least one helix (36) rotatably mounted around an axis (A), and a grid (30), with at least one hole (32), preferably a plurality of holes (32), a portion of the helix (36) being preferably in contact with the grid (30), the helix (36) and the grid (30) being shaped to shear the balls driven through the grid (30), by the rotation of the propeller (36).

[Claim 2] Cosmetic product packaging and dispensing device according to claim 1, in which the helix (36) extends over an angular sector, relative to the axis (A) of rotation of the helix, between 90° and 320°, in particular 180°, the helix (36) preferably comprising a substantially planar portion or an edge in the vicinity or in contact with the grid (30).

[Claim 3] Cosmetic product packaging and dispensing device according to claim 1 or 2, comprising a plurality of coaxial propellers (36).

[Claim 4] Cosmetic product packaging and dispensing device according to one of Claims 1 to 3, in which the grid is substantially normal to the axis (A) of rotation of the helix (36), the grid ( 30) being preferably circular, with axis the axis (A) of rotation of the propeller (36).

[Claim 5] Cosmetic product packaging and dispensing device according to one of Claims 1 to 3, in which the grid has a non-zero height, in the direction of the axis (A) of rotation of the helix ( 36), the grid preferably being symmetrical with respect to the axis (A) of rotation of the helix (36), the grid being more preferably rotationally symmetrical with respect to the axis (A) of rotation of the propeller (36).

[Claim 6] Cosmetic product packaging and dispensing device according to claim 4 or 5, in which the diameter (D30) of the grid (30) is substantially equal to the diameter (D36) of the helix (36).

[Claim 7] Device for packaging and dispensing a cosmetic product according to any one of the preceding claims, in which the helix (36) is integral in rotation with a plate (46; 64) closing the cavity (18) in the tank (12), the plate (46; 64) being rotatably mounted with respect to the tank (12), around the axis (A) of rotation of the propeller (36).

[Claim 8] Device for packaging and dispensing a cosmetic product according to any one of the preceding claims, in which the cavity (18) comprises a first chamber (60), at least in part cylindrical with axis the axis (A ) of rotation of the propeller (36), a piston (50) being received in the first chamber (60), movable in the direction of the axis (A) of rotation of the propeller (36).

[Claim 9] Cosmetic product packaging and dispensing device according to Claims 7 and 8, in which the plate (46; 64) is connected to the helix (36) by a rod (38) extending in the direction of the axis (A) of rotation of the propeller (36), the piston (50) having a through hole (52) allowing the passage of the rod (38).

[Claim 10] Cosmetic product packaging and dispensing device according to claim 9, in which the stem (38) has a thread and the through-hole (52) has a thread complementary to the thread of the stem (38).

[Claim 11] Cosmetic product packaging and dispensing device according to claim 10, in which the piston (50) has a cross section complementary to the cross section of a cylindrical portion (18i) of the first chamber (60), the cross section of the piston (50) preferably being non-circular, in particular elliptical or polygonal.

[Claim 12] Cosmetic product packaging and dispensing device according to any one of claims 8 to 11, in which the first chamber (60) has a flared wall (12t), in the vicinity of the grid (30), the piston (50) preferably having a surface (50i), oriented towards the grid (30), of substantially complementary shape to the flared wall (12t) of the first chamber (60).

[Claim 13] Cosmetic product packaging and dispensing device according to any one of Claims 8 to 12, in which the grid (30) separates the first chamber (60) from a second chamber (62).

[Claim 14] Cosmetic product packaging and dispensing device according to claim 13, in which the second chamber (62) is in fluid communication with a cosmetic product dispensing orifice (44s) via a duct passing through at least one wall of the tank (12).

[Claim 15] Cosmetic product packaging and dispensing device according to claims 9 and 13, wherein the second chamber (62) is in fluid communication with a dispensing orifice (44s) through at least one conduit (44) extending through the stem (38), the stem (38) extending through the grid (30), the dispensing orifice (44s) preferably being flush with the tray (46).

[Claim 16] Cosmetic product packaging and dispensing device according to any one of the preceding claims, comprising a base (16) receiving the reservoir (12), the base (16) preferably forming the bottom of the packaging device and distribution of cosmetic products (10).

[Claim 17] Cosmetic product packaging and dispensing device according to any one of the preceding claims, in which the reservoir (12) is at least partially transparent or translucent, the reservoir preferably being opaque with at least one window transparent or translucent, the reservoir (12) and/or the at least one window preferably being made of glass, crystal, or plastic material.

[Claim 18] Cosmetic product packaging and dispensing device according to any one of the preceding claims, in which the reservoir (12) contains cosmetic product (P), the cosmetic product (P) comprising two phases, a first phase (L) of the cosmetic product (P) preferably being in the form of a liquid or a gel, the second phase (B) being composed of balls immiscible in the first phase (L), the diameter (D32) of the at least one hole (32) of the grid (30) being smaller than an average diameter (D) of the balls of the second phase (B) .

[Claim 19] Cosmetic product packaging and dispensing device according to any one of the preceding claims, in which the at least one helix (36) has at least one lug (66) on its face facing the grid (30) , the at least one lug (66) preferably being in contact with the grid (36).

[Claim 20] Cosmetic product packaging and dispensing device according to any one of the preceding claims, comprising at least one second propeller (68) for mixing the cosmetic product, the at least one second propeller (68) being arranged downstream of the grid (30) in the direction of travel of the cosmetic product inside the cosmetic product packaging and dispensing device, the at least one second helix (68) preferably being arranged in the vicinity of the grid (30) .