FR2996107A1 - Device for packaging and application of cosmetic product i.e. perfume powder, has application elements presenting free ends, and cross-section of envelope surface decreases from proximal end in direction of distal end of core - Google Patents

Abstract

The device has a shaft (1) extending according to a longitudinal axis (X), a reservoir (2) utilized for a cosmetic product i.e. perfume powder, a core (3) that is movable according to another longitudinal axis (X'). A set of application elements (4) such as bristles, is carried by the core. The application elements present a set of free ends. An angle between the former longitudinal axis and the latter longitudinal axis lies between 0 and 80 degrees. A cross-section of an envelope surface decreases from a proximal end in a direction of a distal end of the core.

Description

The present invention relates to devices for packaging and applying a product, in particular a cosmetic product, particularly a perfume. The invention more particularly relates to a new packaging device and application of the type comprising an application element for the application of the product and a container containing the product. In particular, the device according to the invention can be used for the application of scented powders on the body, hands or face. The invention relates more particularly to devices comprising: - a gripping member, - a cosmetic product reservoir, - a core, - application elements supported by the core and able to be supplied with cosmetic product from the reservoir.

The most commonly used applicators of this type are generally for the makeup or care of a large area of the body. However, this type of applicator allows only one gesture, that is to say the sliding of the applicator on the body surface. To dust a large surface, the use of a simple applicator is poorly adapted: the dusting is localized and long to perform if one wants to cover the entire surface. The documents FR1281338, FR2701364, FR2852792, US3702739, US5564851 and US7435029 disclose devices comprising: - a gripping member extending along a longitudinal axis X, - a cosmetic product reservoir, - a core rotating about a longitudinal axis X ', - application elements supported by the core and able to be supplied with cosmetic product from the reservoir, in which the X axis of the gripping member is perpendicular to the axis of rotation X' of the 'soul.

Such devices are particularly intended for the treatment of important surfaces. Indeed, the devices are used with a rod oriented substantially perpendicular to the surface to be treated. However, it is not easy to use them for the treatment of smaller areas. In addition, these applicators are poorly adapted for localized dusting. If they are suitable for the application of a cosmetic product, they are less suitable for finishing operations, spreading or distribution of a powder.

Documents U55365880 and U56835019 disclose devices similar to those indicated above, except that the X axis of the gripping member is parallel to the axis of rotation X 'of the core. In these documents, the soul is essentially cylindrical in shape. This cylindrical shape of the applicator impairs its use other than with the gripping axis oriented substantially parallel to the surface to be treated. With these applicators, it is difficult to avoid the formation of thick traces of product on the surface to be treated. Indeed, these are necessarily formed at the edge of the cylindrical roller, at the interface with the surface to be treated. To reduce these marks, it is possible to move the applicator several times in the vicinity of the same zone. However, the deposited product layer still lacks homogeneity. There is a need for a device for homogenizing the spreading of a cosmetic product on a body surface, especially a small body surface and for applying with a simple gesture this product on such a zone.

The invention relates to a device for packaging and applying a cosmetic product comprising: - a gripping member extending along a longitudinal axis X, - a cosmetic product reservoir, - a movable core along a longitudinal axis X ', - application elements carried by the core and able to be brought into contact with the cosmetic product, these application elements having free ends defining an envelope surface, in which - the angle a between the X axis and X 'axis is between 00 and 80 °, and - the cross section of the envelope surface increases and then decreases from the proximal end towards the distal end of the core. According to the invention, the cross section of the device is preferably measured along at least two axes X 1 and X 2 perpendicular to one another.

A constant section is neither increasing nor decreasing. The soul can have a movement of rotation, oscillation or translation along the axis X '. The soul can also perform a tapping movement. The rotation can take place clockwise or in the opposite direction.

Advantageously, the core is rotatable about a longitudinal axis X 'The invention further relates to a cosmetic process comprising the implementation of the device above. In particular, the method comprises the steps of: - loading the application elements with a cosmetic product from the reservoir, - bring the application elements thus loaded composition in contact with a surface to be treated. With the device of the invention, it is possible to roll and / or slide the application elements on the surface. SURFACE ENVELOPE Advantageously, the cross section of the applicator defines an apex of radius r ma, maximum and largest for the entire envelope surface.

By "radius" is meant the straight segment starting from the core perpendicular to its axis X 'and whose end belongs to the envelope surface. Advantageously, this vertex is remote from the distal end of the envelope surface by a distance preferably of less than or equal to 1.5 μm, more preferably 1.25 μm. Since the top of the cross section is located near the distal end of the applicator, manipulation of the device is facilitated, especially to achieve wide body areas. Advantageously, this vertex is remote from the distal end of the envelope surface by a distance preferably greater than or equal to 0.5 r, more preferably 0.75 rmax. Since the top of the cross-section is located near the center of the envelope surface of the applicator, manipulation of the device is further facilitated, especially to achieve narrow body areas and to move a cosmetic product over such a zone.

More preferably, the angle 13 formed by the slopes of the surface envelope in at least one longitudinal section on either side of the top is greater than 120 °, preferably greater than 130 °, even more preferably greater than 135 °. With such a configuration, it is possible to use the device with multiple orientations. Such an applicator makes it possible to act on the body surface with multiple orientations of the gripping member relative to the surface to be treated, thanks to the shape of the envelope surface, which can define in certain examples of use of the at least partially a ball or a similar shape, with advantageously, a length qmax of envelope surface measured along the longitudinal axis less than or equal to twice the largest diameter dmax of the cross section of the envelope surface, better with qmax <1.5 dm, for example 0.75 dmax <qmax <1.5 More advantageously, the envelope surface defines a ball.

In this case, during the application, the user can roll or move the device on the surface to be treated. To roll the device, the axis of rotation of the parallel device is generally placed on the surface to be treated. To slide the device, the axis of rotation of the device is generally placed perpendicular to the surface to be treated. The user can easily choose the orientation and / or gestures best suited to the desired treatment, perfume or makeup. If necessary, the user will be able to wear makeup or perfume by turning the applicator on itself while moving it in contact with the skin.

The applicator can also be used to perfect makeup. APPLICATION ELEMENTS The application elements may be made by molding with the core, for example in an elastomeric material, the applicator then being a comb or an injected brush.

The application elements may be bristles, and these may be flexible enough to deform on application. The application elements can still be relatively rigid teeth. The number of application elements is for example between 20 and 500 in the case of an injected brush or a comb. Advantageously, the application elements can extend at least in two non-parallel directions. The application elements can in particular extend in more than four different directions around the core, for example angularly spaced more than 45 ° between them. This distribution of the application elements has the advantage of giving rise to a more homogeneous application of the product. Application elements may include feathers or down. REASSEMBLY The tank can be delimited by a flexible wall on which the user can press to deliver the product. Alternatively, a pump-like distribution member having an actuator may, in response to an actuation command, deliver product. Advantageously, the reservoir has an elongated shape, such as a rod. According to a first embodiment, the gripping means comprises the reservoir. The stem may include a flexible portion that can flex if pressure is exerted by a user to create a vacuum capable of passing the product into the worms. The product can be a cosmetic product, for example a foundation, a perfume or a moisturizing product. The product can be fluid, in particular liquid. Preferably, the product is powdery. MOBILE AME The soul can form a hollow volume delimiting a feed passage of the product from the reservoir. The hollow volume may further comprise orifices intended to convey the product towards the application elements. It can for example form a hollow sphere, a hollow cylinder or a hollow tube.

According to a second embodiment, the core forms a hollow volume comprising the cosmetic product reservoir. In this case, the core may be provided with orifices allowing the product to pass when it is engaged in rotation. The device is compact. It has fewer pieces.

The core may include a handle to rotate it, the handle can further abut between two positions in the case of oscillation. The rotation of the core causes the dispersion of the product towards the application elements, causing its passage through the orifices. Alternatively, a pump or a piston, connected to an actuating member may, in response to an actuation command from the user, deliver cosmetic product to the core of the device and / or to the orifices. Advantageously, the angle α between the axis X 'of the core and the axis X of the gripping means is between 0 degrees and 70 °, preferably between 0 degrees and 50 ° and more preferably between 0 degrees and 30 °. °. The device is particularly easy to handle if the gap between the core and the gripping means is respected. Advantageously, the gripping means comprises a flexible portion that can flex during use. Access to narrow body areas is facilitated. Indeed, the angle is variable during the application. The sag can be elastic. Advantageously, the angle between the axis X and the axis X 'is between 0 ° and 70 °, more preferably between 0 ° and 50 ° and even more advantageously between 0 ° and 30 °. More preferably, the angle between the axis X and the axis X 'is equal to 0 °. With such angles, the gripping of the device is facilitated and the inclination between the gripping means and the core is optimal for the user. The gripping member and the core may be secured by snapping, force mounting or clipping or screwing. The core material and the grip member may be the same or different. It can be chosen from polyethylene, polypropylene, a mixture of polyethylene and polypropylene, a polyester, a natural or synthetic rubber, a latex, TPE (thermoplastic elastomer), a Kraton, silicone, Santoprenee, SEBSe and SB se or a mixture of these. The material may be monolayer or multilayer. The material can also be metal.

Advantageously, the device according to the invention comprises an on / off system to let the product out of the tank or block its output. With this system, the user controls the arrival of the product on the application elements. The invention may be better understood on reading the following detailed description, non-limiting examples of implementation thereof, and on examining the appended drawing, in which: FIG. 1 is a schematic view, in longitudinal section, of an exemplary packaging and application device produced according to the invention, the envelope surface of the application elements drawing a sphere, - Figure 2 represent in isolation the envelope surface of the device of FIG. FIG. 1 in cross section in section AA with the application elements and the core; FIG. 3 is a schematic cross section of the sectional envelope surface CC of FIG. 1; FIG. 4 is a schematic cross section; of the envelope surface in section AA of FIG. 1; FIG. 5 is a schematic cross section of the envelope surface in section BB of FIG. 1; FIG. 6 is a partial schematic view, in section, an example of a device for packaging and application made in accordance with the prior art, the envelope surface of the application elements drawing a cylinder, - Figure 7 is a schematic cross section of the envelope surface in section DD FIG. 8 is a schematic cross-section of the envelope surface in section EE of FIG. 6; FIG. 9 is a schematic cross section of the envelope surface in section FF of FIG. 6; FIG. 10 is a diagrammatic view, in longitudinal section, of an exemplary packaging and application device not according to the invention, the envelope surface of the application elements drawing a basin, - FIG. 11 is a schematic transverse section. of the envelope surface in section II of Figure 10, - Figure 12 is a schematic cross section of the envelope surface in section HH of Figure 10, - Figure 13 is a shot schematic cross-section of the envelope surface in section GG of FIG. 10, FIG. 14 is a schematic representation of an alternative embodiment of the application elements of the device according to the invention in longitudinal section; FIG. In isolation, schematically, an alternative embodiment of the application elements of the device according to the invention in longitudinal section, - Figure 18 is a longitudinal section, schematic and partial, another example of packaging device and Application according to the invention and illustrates the definition of the angle α. The packaging and application device 1 shown in FIG. 1 comprises: - a rod 1 serving as a gripping means, - a container 2 enclosing the cosmetic product in the form of a powder, a core 3 having the shape of a hollow sphere, application elements 4 formed of hair.

In the example considered, the rod 1 is rectilinear and of circular cross section, but in non-illustrated variants, the rod 1 may be non-rectilinear and / or of non-circular section. In the example considered, the core 3 is held between two rings 405 and 406. These limit the displacement of the core 3 in translation. The core 3 surrounds tufts of hair made of a natural or synthetic material. The core 3 extends along a longitudinal axis X 'which is rectilinear or not and merged or not with the longitudinal axis X of the rod 1.

The free ends of the bristles 4 of the brush 5 define an envelope surface E that has been materialized in dashed lines in FIG. 1 and shown schematically in cross section in FIG. 2. In the example under consideration, the envelope surface E is symmetrical in revolution and has a variable cross section.

Figures 3, 4 and 5 show that the cross section increases and then decreases from the proximal end to the distal end of the applicator. At the proximal end of the device (FIG. 5), the circular section BB has an envelope surface diameter E which is, for example, approximately 20 mm. In the center (FIG. 4), the circular section AA has an envelope surface diameter E which is, for example, approximately 30 mm. At the distal end (FIG. 3), the circular section CC has an envelope surface diameter E which is, for example, approximately 20 mm. The rod 1 is partially formed of flexible material, for example elastomer. It comprises a passage 105 for the flow of the product from the rod 1 to the core 3. The rod 1 contains the reservoir 2. The latter may also be flexible material. It is inserted inside the rod 1. The rod may also be formed by a rigid central portion, for example cylindrical. This central part can be wrapped by a flexible material. The passage 105 is placed opposite a passage 305 of the core 3 in order to let the product circulate towards the core 3.

At its outer periphery, the core is provided with orifices 306 regularly spaced. They let the product circulate towards the outside of the core 3, towards the application elements 4.

In addition, the cross section of the brush increases and decreases when moving from the proximal end to the distal end of the envelope surface, in at least two axes X1 and X2 perpendicular to each other, as shown in FIG. 3 , 4 and 5. In the plane of section containing the axis Xl, the ray r increases, reaches the maximum rm, then decreases. It is the same in the plane of section containing the axis X2. A device of the prior art is partially shown in Figure 6. The envelope surface E is cylindrical of revolution, of constant diameter. As shown in Figures 7, 8 and 9, the cross section EE, DD, FF of the brush does not vary. This device does not meet the characteristic of the invention in which the cross section of the envelope surface increases and then decreases from the proximal end towards the distal end of the core. A device not according to the invention is partially shown in Figure 10. The envelope surface E draws a basin whose diameter increases between the proximal end and the distal end of the applicator. As shown in FIGS. 11, 12 and 13, the cross-section II, HH, GG of the brush increases but does not decrease toward the distal end. This device does not meet the characteristic of the invention in which the cross section of the envelope surface increases and then decreases from the proximal end towards the distal end of the core. Figures 14, 15, each show longitudinal sections along the X axis of the envelope E delimited by the application elements. In each of these figures 14, 15, the cross section of the envelope surface E increases and then decreases from the proximal end towards the distal end of the core. The envelope surface E conforms to the definition of the envelope surface according to the invention. Figure 18 illustrates the definition of the angle α between the X axis and the X 'axis. In the example shown, the angle α is 40 °. It is between 0 ° and 80 °, which is the interval according to the definition of the device according to the invention. In the example shown, the axis of the core is inclined relative to the gripping axis. The inclination is measured by the angle a. To use the device, the person grasps the rod 1. It presses the latter to push the powder towards the core 3 and then towards the application elements 4. It touches a chosen body surface with the end of the elements of application 4. Then it rolls the application elements 4 on this surface. During the rotation of the soul, the person can replenish the powder application elements by pressing the rod one or more times. In particular, the various embodiments of the above examples can be combined with one another in non-illustrated variants. For example, any soul may be made represented along a curved longitudinal axis. The application elements can be of any kind and have any section. Application elements having, in cross-section, for example a circular shape with or without flat, flattened, star-shaped, for example in the form of a cross or with several three branches, U-shaped, H, T-shaped, may be used. or V, a hollow shape, for example circular or square, forming branches, for example flake-shaped, a prismatic shape, for example triangular, square or hexagonal, or an oblong shape, in particular lenticular or hourglass shape . The application elements, especially when it comes to teeth or bristles molded with the core, can extend with a constant spacing along the longitudinal or variable axis. The gripping means may have a symmetrical cross section or not, for example circular, elongate or square. The reservoir can be positioned in the core, in the stem or outside the core and stem. The tank may be placed in the center of the rod or at one end thereof. Advantageously, the reservoir is housed in the rod. Another way to authorize and / or stop the arrival of product can still be envisaged, such as a ferrule.

The expression "having one" shall be understood as being synonymous with "having at least one", unless the opposite is specified. The expression "between" must be understood as inclusive.

Claims (12)

REVENDICATIONS1. Device for packaging and applying a cosmetic product comprising: - a gripping member (1) extending along a longitudinal axis X, - a reservoir (2) of cosmetic product, - a core (3) movable according to a longitudinal axis X ', - application elements (4) carried by the core (3) and able to be brought into contact with the cosmetic product, these application elements (4) having free ends defining an envelope surface (E), wherein - the angle α between the X axis and the X 'axis is between 00 and 80 °, and - the cross section of the envelope surface (E) increases and then decreases from the proximal end towards the distal end of the core (3). 15 2. Device according to claim 1, wherein the core (3) is rotatable about the longitudinal axis X. ' Apparatus according to any one of the preceding claims, wherein the cross section of the envelope surface (E) defines an apex of radius, said vertex being remote from the distal end of the envelope surface (E) by a distance less than or equal to 1.5 μm, preferably 1.25 μm. 4. Device according to claim 3, wherein the apex is remote from the distal end of the envelope surface (E) by a distance greater than or equal to 0.5 μm, preferably 0.75 μm. 5. Device according to any one of claims 3 or 4, wherein the angle 13 formed by the slopes of the envelope surface (E) in at least one longitudinal section on either side of the top is greater than 120. °, preferably greater than 130 °, even more preferably greater than 135 °. 6. Device according to any one of the preceding claims, wherein the envelope surface length qmax (E) measured along the longitudinal axis is less than or equal to twice the largest diameter dmax of the cross section of the surface. envelope (E). 7. Device according to any one of the preceding claims, wherein the angle a between the axis X 'of the core and the axis X of the gripping means (1) is between 00 degrees and 70 °, of preferably between 0 ° and 50 ° and more preferably between 0 ° and 30 °. 8. Device according to any one of the preceding claims, wherein the application elements (4) extend in more than four different directions around the core (3). 15 9. Device according to any one of the preceding claims, wherein the gripping means (1) comprises a flexible portion that can bend during use. 10. Device according to any one of the preceding claims, 20 comprising an on / off system (55) to let the product out of the tank (2) or block its output. 11. Device according to any one of the preceding claims, wherein the reservoir (2) is housed in the rod (1). 25 12. Cosmetic process comprising the implementation of the device according to any one of the preceding claims. 10