FR2999888A1 - BELLOW TIP FOR COSMETIC DEVICE - Google Patents

Abstract

The present invention relates to a tip for a device for dispensing and applying a cosmetic composition comprising: - reservoir (1) containing the cosmetic composition, - an applicator (2), - a passage means (3) of the composition between the reservoir (1) and the applicator (2), the reservoir (1) having a zone (11) deformable under the effect of a pressure exerted on the applicator (2).

Description

The present invention relates to a nozzle for a device for dispensing and applying a cosmetic composition. It is known from EP 1 728 494 to apply a cosmetic composition using an assembly comprising an aerosol container and a device to be mounted on the aerosol container, comprising a rotary massage member driven by an electric motor. It is also known from FR 2 918 545 a dispensing and application assembly of a cosmetic composition, comprising: a container containing the composition, the latter comprising at least one cosmetic active agent chosen from: a cleaning agent or a make-up remover, an anti-aging active agent, an anti-wrinkle active agent, an antioxidant, a liporestructuring agent, a skin microcirculation agent, an active agent for combating oily skin, a self-tanner, a desquamating agent, a humectant or moisturizer, a surfactant, an active agent for the eye contour, a slimming agent, an applicator, an application device comprising: a body configured to receive the container and the applicator, a rotational drive means the applicator relative to the body; and - a conduit for bringing the composition exiting the container to an application surface of the applicator. The rotational training may allow at least one of a massage action, skin exfoliation, spreading of the composition, which can generate new sensations to the application and improve the effect of one or more assets. Nevertheless, according to this document, it is not intended to easily change the container containing the composition and replace it, for example by a container containing another composition. In addition, this document does not give the possibility of delivering a quantity of product determined by the user himself. The documents FR2779923, US5186563, US6805512, US D498021 and DE 19963138 describe tanks with nozzle that are used manually without being coupled to an electrical device for moving this tip. There is a need to provide a mouthpiece for devices for dispensing and applying cosmetic products that is: - convenient to use, - simple construction, - without the need to drain conduits to be changed, - accurate in the dosage by to the wish of the user, - able to offer the consumer the opportunity to change cosmetic product by keeping the same device, and this under appropriate hygiene conditions. To do this, the subject of the invention is a mouthpiece for a device for dispensing and applying a cosmetic composition comprising: - reservoir containing the cosmetic composition, - an applicator, - a means for passing the composition between the reservoir and the applicator, the reservoir having a deformable zone under the effect of a pressure exerted on the applicator.

The tip can also be called "replacement tip" or "refill". With the tip of the invention, the user does not have to perform excessive manipulations. It simply mounts the tip on the device and then it can press more or less the tip on the body surface. Depending on the pressure it exerts, it adjusts the amount of product delivered on the surface. Of course, it may choose to apply the product in several times, in particular depending on the degree of absorption of its skin for example or according to the evaporation of the product. The construction of the tip is simple, which gives it an affordable cost. A major advantage of the tip of the invention lies in the fact that the product is delivered directly by pressure on the treated surface. Thus, the delivery of the product is accurate both in quantity and in positioning. As the dispensing of the product does not involve pressure by a finger, the tip can be used even by more clumsy, shaky or elderly people. Deformable zone Advantageously, the deformable zone is an axially deformable zone. The term "axially deformable zone" means a deformable zone along the longitudinal axis X of the nozzle.

The compression of the deformable zone generally results from a thrust exerted by the user substantially in the axis of the deformable zone, which coincides with the axis X. Thanks to the invention, the user can easily obtain a dose of product, in a simple way. The user can decide to depress the deformable zone as much as possible. He can also choose to press more or less on the deformable zone. The user can also easily use the tip with one hand. Advantageously, the deformable zone comprises a bellows. The bellows is an elastic member, which relaxes when it is not subjected to any compressive stress along its axis. It compresses in case of axial stress. The deformable zone comprises a first region and a second region approaching during its compression, the compression resulting from a thrust exerted by the user substantially in the axis of the body of the device The thickness of the bellows is for example between 0 , 1 mm and 1 mm and preferably between 0.3 mm and 0.8 mm. Advantageously, the number of folds of the bellows can be between two and six, better between three and five. Tank Advantageously, the tank is formed in one piece. It is preferably molded in one piece, in particular in the same thermoplastic material, for example LDPE, HDPE, a mixture of LDPE and HDPE, PP or a mixture of PE and PP in any proportion. The thickness of the tank wall is for example between 0.1 and 1 mm and in the second zone between 0.3 and 0.8 mm. Advantageously, the cosmetic product initially occupies 70 to 100% of the interior volume of the deformable zone. By "initially" is meant before the first use of the tip. The body of the tank can be surmounted by a collar that allows the attachment of a cap for storing the tip.

If necessary, the tank is closed by a plug ensuring tightness. It is proposed to the user to mount the reservoir on an application device, after removing the cap, during the first use. Advantageously, the applicator is mounted on the neck of the reservoir and the cap is mounted on the applicator so as to seal the means for passing the composition between the reservoir and the applicator, for example the dispensing orifices. Advantageously, the total internal reservoir volume is between 1 and 100 cm3, preferably between 20 and 50 cm3, in the rest configuration of the deformable zone. This volume is optimal for some uses or a repeated treatment extending over a few weeks. Preferably, the internal volume of the reservoir can shrink by a volume of between 10% and 50% of the internal volume of said reservoir in the rest configuration of the deformable zone. This variation in volume has the advantage of being visible and measurable.

Advantageously, the reservoir is defined by a ratio L // being greater than or equal to 2, L being the length of the endpiece in the rest configuration of the deformable zone, and / the greatest transverse dimension of the endpiece in the configuration of rest of the deformable zone.

These dimensions give it a practical and easy to store. The tank can be manufactured by injection blow molding or extrusion blow molding. Applicator The applicator may comprise a cellular material which may be elastically deformable and / or compressible. This material can be a foam. The foam may be made of a material selected from the following list: Polyurethane, polyether, polyester, polyvinyl chloride, polyethylene, EVA, latex, silicone, SIS, SEBS, silicone elastomer, latex elastomer, nitrile elastomer, butyl elastomer , Neoprene®, NBR, SBR, this list not being limiting.

The applicator may have a composite structure with several layers of different natures, for example several types of foams. The applicator may comprise a slot or a hole opening on the application surface. The applicator may have any shape. It may have a circular, oval or polygonal section, for example triangular, square, hexagonal, etc. The applicator may have abrasive properties. By "abrasive property" is meant a surface that when moved over the skin removes at least a part of the dead cells from the surface. Such surfaces can be characterized by an abrasive power of between 0.01 and 0.03 g / cm 2 / min. Abrasive power refers to the amount of plaster removed per minute, per square centimeter of an abrasive surface applied to a 50 mm thick plaster tile with a Black and Decker CD400 135W sander, the resulting pressure on the resulting plasterboard the weight of the sander, of which only the movement in the plane of the abrasive surface is constrained. Such applicators are obtained either by taking a substantially rigid cellular material or by incorporating hard grains into a flexible cellular material. An example of an abrasive surface is a non-woven exfoliating pad marketed by the company 3M. The foam may be a soft and flexible foam particularly suitable for spreading the product, sometimes also called sponge. The applicator may for example be a hydrophilic crosslinked polyester foam, for example with a density equal to 32 kg / m 3.

It is also possible to envisage a sponge conventionally used to apply foundations such as NBR, for example Yukilon® from PENTHOUSE GROUP. The applicator may be made of injected flexible plastic, for example elastomer and have massage reliefs, for example pins or balls The applicator is for example an elastomer such as SEBS or silicone. The applicator may be a thermocompromised foam. The thermocompression allows to create reliefs on the surface of the foam and / or to complex it with an elastic fabric, which allows to have the flexibility of the foam but the touch of a textile more pleasant than that of the plastic.

An example of a thermocompromised foam is a closed-cell polyolefin foam, for example polyethylene, thermocompressed with a specific mass of 33 kg / m 3, which is, for example, complexed with an elastic fabric such as, for example, Lycra®. The applicator may be a grater made of plastic, metal or glass. The applicator may be a synthetic or natural bristle brush, for example a pile brush with tufts of 0.075 mm diameter Nylon® 6.12 strands that have been milled and grinded to make them very soft on contact with the facial skin. The applicator may have rotating elements, such as balls or rollers, smooth or raised to come to massage the skin.

The invention also relates to a device for dispensing and applying a cosmetic composition contained in a tip previously, said device comprising a housing for receiving the tip. Advantageously, the device comprises means for moving the tip.

Generally, the setting in motion of the applicator is carried out by the setting in movement of the whole of the endpiece. Advantageously, the device comprises electrical supply means.

Dispensing and application devices Several types of devices may be used depending on their form of motion. These are known to those skilled in the art. Examples are: a) Simple movement: - Rotational movement - Oscillation movement - Rotational movement that can be inverted by the user to provide a massage or traction towards the top of the skin - Percussion movement - Vibration movement b ) Composite movement: - Rotation movement associated with percussion - Rotation movement associated with vibration Fixing the tip on the device The insertion of the tip is facilitated because it can be, for example, simply engaged in a corresponding housing of the device The device may comprise a housing of elongate shape, provided at one end with at least one control member of the movement of the tip. The device may comprise at least two housings, for receiving at least two endpieces. The device may comprise a control member specific to each tip or a selection means for selecting a tip prior to the actuation of the control member. Advantageously, the tip is secured to the housing of the device by pinching, snapping, clipping, screwing, clamping, mounting force or magnetization. The tip may also comprise attachment lugs, intended to snap on the application device to retain the reservoir and the applicator. The tabs are generally flexible enough to allow the user to detach the applicator 5 by pulling on it. Passage of the composition between the reservoir and the applicator The reservoir and the applicator may be separated by at least one wall comprising one or more through orifices. The through hole (s) form (s) one or more passage (s) for the composition. The passage duct makes it possible to route the composition leaving the reservoir to the applicator and then to the body surface to be treated.

The passage duct may also be formed by a separate part, for example by a flexible conduit connecting the reservoir and the applicator. In this case, the cosmetic product can lead to the outer surface of the applicator. Advantageously, the cosmetic composition is chosen from a composition for care, cleaning, hygiene, exfoliation, desquamation, thinning, coloring, makeup, removing make-up, bleaching or a mixture thereof.

In the case where the device comprises several tips, they may contain different cosmetic compositions. Cosmetic Treatment Processes The invention allows various methods of treatment. In one example, the composition is applied without the applicator being driven in motion, which may allow for example to spread the composition on the region to be treated. The applicator is then rotated to massage the region on which the composition has been applied.

In another example, the applicator is moved in order to massage the region to be treated, without the composition being dispensed at first. The massage action can lead to local heating due to the friction of the applicator on the skin for example, and the absence of the composition on the applicator initially can increase the friction and the sensation of heat that results. Then, while the applicator is still driven in motion or alternatively while the applicator is stopped, the composition can be dispensed and spread over the previously massaged region.

Assemblies It is possible to propose to the user, for example in the same package, several tips comprising: reservoirs containing different compositions, and / or applicators having different application characteristics. The invention also relates to an assembly comprising at least one endpiece and a device as defined above. The invention will be better understood on reading the following detailed description, non-limiting examples of implementation thereof, and on examining the appended drawing, in which: FIG. FIG. 2 is a diagrammatic and partial longitudinal section of the endpiece of FIG. 1 after partial use, FIG. profile, an example of device according to the invention, - Figure 4 shows a top view of a set (kit) according to the invention. The tip, shown in FIGS. 1 and 2, comprises: - a reservoir 1 containing the cosmetic composition P, - an applicator 2, - a passage conduit 3 of the composition P between the reservoir 1 and the applicator 2.

Figure 1 illustrates the definition of the length L and the largest transverse dimension of the tip. The length L is the total length of the tip. It includes in particular the maximum length of the applicator 2, the fixing base 50 and the reservoir 11. The maximum width of the end piece is, in this example, the maximum width of the fixing base 50.

The reservoir 1 is formed by a bellows 11 deformable under the effect of a pressure exerted on the applicator 2. Referring more particularly to Figure 1, we can see that the tip is elongated along an axis longitudinal X and comprises a reservoir 1 containing the cosmetic composition. The passage duct 3 is formed by two through holes 31 and 32 (Figure 2). These orifices perforate the wall 12 which separates the applicator 2 and the reservoir 1. The device represented in FIG. 3 comprises a housing 4 making it possible to receive a tip such as, for example, the one illustrated in FIG. 1. An annular bead 51 is disposed on the fixing base 50. This bead 51 can allow the fixing of the end of the reservoir 1 on the body 52 of the device The fixing of the fixing base 50 on the body 52 can, in the example considered, be realized by screwing, magnet, clipping or clamping. The body 52 houses means for moving the tip. This movement is for example a rotational movement about an axis of rotation X which is fixed relative to the body 52. It is for example a non-zero angle with the longitudinal axis Y of the body 52.

The drive means may comprise an electric motor housed in the body 52, powered by one or more cells or batteries, driving via the gearing, the applicator 2 in rotation about the axis X. To distribute a cosmetic composition on a body surface, the applicator 2 is placed on this surface. Pressure is exerted towards the reservoir 1. The bellows 11 is compressed. The cosmetic composition P is directed towards the orifices 31 and 32. It reaches the surface of the applicator 2 and then the body surface to be treated. The assembly (kit), shown in Figure 4, comprises a device 100 and four tips 101, 102, 103 and 104. These tips are respectively provided applicators 21, 22, 23 and 24. These applicators each act specifically on the skin. For example: the applicator 21 exerts a cleaning action, the applicator exerts an exfoliation action, the applicator exerts a massage action, the applicator exerts a smoothing action. The compositions contained in the tips 101, 102 and 103 may be hygiene compositions. The composition contained in the tip 104 may be a care composition. The consumer chooses one of the tips 101, 102, 103 and 104. It fixes the selected tip on the device for use. Of course, the invention is not limited to the examples which have just been described. In particular, it is possible to combine the particularities of embodiment of the examples which have just been described in non-illustrated variants. In particular, the applicator can be of all constitutions or forms. The dimensions of the tip can be adapted for example. The movement can also be different. The expression "having one" shall be understood as being synonymous with "having at least one", unless the opposite is specified.

Claims (15)

REVENDICATIONS1. End piece for a device for dispensing and applying a cosmetic composition comprising: - reservoir (1) containing the cosmetic composition, - an applicator (2), - means for passing (3) the composition between the reservoir (1) ) and the applicator (2), the reservoir (1) having a zone (11) deformable under the effect of a pressure exerted on the applicator (2). 2. End piece according to claim 1, the zone (11) being axially deformable. 3. Tip according to any one of the preceding claims, the zone (11) deformable comprising a bellows. 4. End piece according to any one of the preceding claims, the reservoir (1) being formed in one piece. 5. Tip according to any one of the preceding claims, the product (P) initially occupying 70 to 100% of the internal volume of the zone (11) deformable. 6. Tip according to any one of the preceding claims, the inner volume of the reservoir (1) being retractable with a volume of between 10% and 50% of the internal volume of said reservoir (1) in the rest configuration of the zone ( 11) deformable. 7. Tip according to any one of the preceding claims, the zone (11) deformable occupying at least 70% of the total height of the interior volume of the tank (1), said total height being measured in the rest configuration of the zone (11). ) deformable. 8. Tip according to any one of the preceding claims, the total internal volume of the reservoir being between 1 and 100 cm3, in the rest configuration of the zone (11) deformable. 9. An end piece according to any one of the preceding claims, the ratio L // being greater than or equal to 2, L being the length of the endpiece in the rest configuration of the zone (11) deformable, and / the largest dimension cross section of the tip in the rest configuration of the deformable zone (11). 10. Tip according to any one of the preceding claims, the composition being selected from a composition for care, cleaning, hygiene, exfoliation, desquamation, thinning, coloring, makeup, removing make-up, whitening or a mixture thereof. 11. Device for dispensing and applying a cosmetic composition contained in a nozzle as defined in any one of the preceding claims, said device comprising a housing (4) for receiving the tip. 12. Device according to claim 11, comprising a means for moving the tip. 13. Device according to any one of claims 11 or 12, wherein the tip is secured to the housing (4) by pinching, latching, clipping, screwing, clamping, mounting force or magnetization. 14. Device according to any one of claims 1 to 13, comprising electrical supply means. 15. An assembly comprising at least one nozzle according to any one of claims 1 to 10 and a device according to any one of claims 11 to 14.