MXPA99001033A - Device for the application of a composition that can form a film - Google Patents

Abstract

The present invention relates to a device for forming a release film at the site and the desired format on the surface of the skin, the device is characterized in that it comprises: a film-forming composition, wherein the composition has the ability to form a film which can be peeled once it is dried, a container containing the composition, an applicator including an applicator element, and a cleaning member within the container, the applicator element and the cleaning element are arranged in such a way that after cleaning and move in contact with the skin, the applicator element leaves a film of the film-forming composition

Description

DEVICE FOR THE APPLICATION OF A COMPOSITION THAT CAN FORM A MOVIE Field of the Invention The present invention relates to the general domain of the films used in contact with the skin for the purpose of exercising a cosmetic and / or curative action thereon.

Background of the Invention The films that are temporarily applied on the skin to extract the impurities and / or to release an active substance by the transdermal route are already known, such films are still called "patches" The use of these films has been made difficult by the fact that a shape adapted to the region of the face or body to be treated is not yet available. In addition, these films have a multiple layer structure and are relatively thick, thus being uncomfortable for the skin. Rßf.029399 In addition, its appearance and thickness do not allow the user to wear them discreetly. On the other hand, the compositions are known which are transformed into release films when they are dried, still called compositions capable of forming a film, conditioned in a jar or in a tube and applied with the finger or with a spatula in a relatively coarse manner. or rough on the face to form a mask. The irregular application of these compositions capable of forming a film leaves visible traces that no longer allow the user to leave or work without his relatives noticing. There is thus a need to have a film of application facilitated whatever the region of the face or body to be treated, which is comfortable and which can also be worn with discretion if necessary. The invention has been achieved thanks to a device that allows the application of a composition capable of forming a film, characterized in that it carries: B a container that contains the composition capable of forming a film, or an applicator that carries an application element, a run-off element inside the container, the application element of the drainage element is placed so that the application element, after the draining, leaves when it moves in contact with the skin a film of smoke composition which after drying will be detachable and which presents per unit of surface a mass preferably comprised between 1 and 15 mg / cm2. Thanks to the invention, the user can easily deposit on the skin a substantially constant thickness of the composition capable of forming a film. The film is easily made in situ by the user to the desired size. This film is comfortable because it is soft and not very thick, and also can hardly be made visible by the close friends of the user, being covered if necessary by a makeup product. The composition capable of forming a film preferably carries at least one active substance intended for the pharmaceutical and / or cosmetic treatment of the skin.

Preferably, the application element is an external capillary, that is to say that the composition capable of forming a film is deposited only on its surface. Preferably, it is an application element carrying on its surface a coating consisting of fine and soft hairs advantageously deposited by an electrostatic process on a non-porous support. Preferably, the length of the hairs is between 0.2 and 1.5 mm and the drainage element is constituted by a foam block. The application element, when it is an external capillary, does not absorb the product on the bottom, in such a way that when it is pressed on the skin it is not capable of substantially reabsorbing the product deposited previously on it. On the contrary, when the application element is constituted by a foam of cells or inverted cells, then it can reabsorb to a certain extent the product already deposited on the skin. Another object of the invention is a method for forming a removable film in situ and in the desired size on the surface of the skin., characterized in that it comprises the steps consisting of: ß applying on the skin by means of an application element, preferably an external capillary, a layer of substantially constant thickness of a composition that can form a film, coming from a container provided with a ding element, the application element and the ding element are chosen in such a way that the application element leaves on the surface of the skin a detachable film having a mass per unit area comprised between 1 and 15 mg / cm 2, the composition capable of forming a film preferably comprises at least one active substance intended for the pharmaceutical and / or cosmetic treatment of the skin, B allowing the composition capable of forming a film to dry, deposited on the skin by the application element. Another object of the invention is a cosmetic treatment method, characterized in that it comprises the steps consisting of: B applying to the skin by means of an application element, preferably an external capillary, a layer of substantially constant thickness of a composition capable of forming a film coming from a container provided with a drainage element, the application element and The drainage element is chosen in such a way that the application element leaves on the surface of the skin a release film having a mass per unit area between 1 and 15 mg / cm2, the composition capable of forming a film also carries one or more active substances having a cosmetic action on the skin, B leaving in its place the composition capable of forming a film deposited on the skin by the application element during the useful time of the treatment, B removing the film. Another subject of the invention is the use of at least one active substance which has a curative effect on the skin in the manufacture of a composition capable of forming a film, intended to be applied to the skin to form a release film, this composition capable of After forming a film, after drying on the surface of the skin a film having a mass per unit area of between 1 and 15 mg / cm 2 is formed The subject of the invention is still a patch carrying a composition capable of forming a film, which has been polymerized and at least one active substance intended for the cosmetic and / or pharmaceutical treatment of the skin, having a substantially constant thickness and a mass per unit area between 1 and 15 mg / cm.sup.2. Advantages of the present invention will be apparent upon reading the detailed description given below, of an example of a Non-limiting embodiment of the invention, and in the examination of the attached drawing on which: - Figure 1 is a view of a schematic section of a device according to the invention, which allows the application of a composition capable of forming a film, on the skin, - Figure 2 illustrates the application of the composition capable of forming a film on the skin by means of the applicator of the device of figure 1.

"Detailed description of the invention The conditioning and application device 1 shown in FIG. 1 has a small size that allows it to be easily transported in a bag or bag. It carries a container 2 that forms a reservoir and an applicator 3 carrying a rod or rod 4, advantageously flexible, provided at one end of an application element 5 and at the other end of a fastening element 6. The container 2 it is formed by the assembly of a body 8 open at its upper part and by a raised end piece 9 on which the neck 7 of the container is made. A drip element 11, consisting of a block of cells or inverted cell foam, provided at its center with an axial cavity for the passage of the bar or rod 4 and the application element 5 of the applicator 3, is fixed on the face interior of the sealing part 9. The draining element 11 is fixed to be welded for example. An annular set 10 is provided between the radially outer surface of the drip element 11 and the radially inner surface of the body 8, so as to allow a radial expansion of the foam when it is traversed by the application element. The fastening element 6 has an internal thread 12 which is to be placed or screwed on an external thread of the neck 7 to ensure the sealing of the container 2, the rod 4 which then passes through the draining element 11 and the application element 5. they are located close to the bottom of the body 8. The neck 7 is not threaded at its upper end, so as to avoid, in the case of the formation of a deposit on the column 7., that this deposit does not hinder the subsequent screwing of the fastening element 6. The container 2 is filled with a composition capable of forming a colorless film F, which carries one or more polymers and one or more solvents. As the usable polymers, mention may be made of polyvinyl alcohol, a soluble latex, EVA, polyurethane or an acrylic resin, and the solvent or solvents are chosen based on one of the polymers used. In the described embodiment, the application element 5 has an elongated, symmetrical shape of revolution.

It is constituted by a non-porous support carried on the rod 4 or of integral formation with it, covered with fine and soft hairs, of nylon for example, whose length is comprised between 0.2 and 1.5 mm, preferably of the order of 1 mm, these hairs have been deposited electrostatically on said support. To use the device 1, the user unscrews the fastening element 6 and removes the application element 5 from the interior of the container 2 through the draining element 11. The application element 5 and the draining element 11 are distributed in such a way that subsists on the surface of the application element 5, after its removal from the container 2, a reduced thickness of the composition capable of forming a non-polymerized film F, which can be applied to the desired size by the user on the skin at level of the region of the face or body to be treated, as illustrated in Figure 2. The thickness of the product left on the skin is a function of the length of the hairs of the application element 5.

In the example described, the composition capable of forming a film F is polymerized as the solvent or the solvents which contain it evaporate. It is understood that, thanks to the invention, it has been made easier for the user to obtain a film of the size that exactly corresponds to the area to be treated. You can try to cover a grain or a black point for example. It is also convenient to note that the flexibility of the rod 4 in the described example allows a smoother application, without irritating the treated area. Once the composition capable of forming a film is polymerized, that is to say that the film is dry, the user can, if necessary, coat it with a makeup product to make it practically undetectable. The film is removed by peeling off the skin, or in the case where the polymer or polymers used are water-soluble polymers whose solvent is aqueous and whose polymerization is irreversible, by washing with water. When it is removed, the film can descale the impurities.

In a general manner, the composition capable of forming a film F deposited on the skin constitutes, after drying, a film having per unit area a mass comprised between 1 and 15 mg / cm2, and preferably between 1 and 10 mg / cm2 and preferably between 1.5 and 5 mg / cm2. The drying times of the composition capable of forming a film F on the skin are between 1 and 5 minutes, preferably between 2 and 4 minutes. The composition capable of forming a film F can carry one or more known active substances that have a cosmetic or curative effect on the skin, such as tannins, waxes, anti-stain, anti-wrinkle, anti-oxidants, anti-free radical, moisturizing, depigmenting agents , liporreguladores, slimming agents, anti-acne agents, antisoriáticos agents, anti-seborrheic, antihistamine, anti-aging agents, anti-inflammatory, refreshing, vascular protectors, antibacterials, antifungal agents, antiperspirants, skin conditioners, immunomodulators, nutritional agents and desensitizing. The film of the composition capable of forming a film deposited on the skin tends to dry more quickly on the surface than in contact with the skin. The composition capable of forming a film F can thus remain in contact with the skin without being polymerized immediately to allow the active substances contained therein to diffuse into the skin. The evaporation of the active substances, when they are volatile, is further diminished to a certain extent by the fact that the film begins to dry on the surface. By way of example, a composition capable of forming a film F having the following formulation (% by mass) is manufactured or obtained: 75% water 5% ethanol 5% of a water-soluble active substance such as caffeine, 10% pseudo polyurethane latex polymer, - 5% of a preservative. This composition is intended to be applied on the face, to treat the bags under the eyes.

Another composition capable of forming a film having the following formulation (mass%): 70% water - 15% vinyl alcohol 10% of a water-soluble active substance such as a vegetable extract, 5% substances has been made or obtained. active fat-soluble such as salicylic acid. This composition is intended to be applied over the areas of erythema and can be saved one day. It is understood that the invention is not limited to the embodiment which is to be described. It is possible in particular to use applicators different from that which is shown on the figures, for example applicators whose rod or rod is angled, or whose application element has a particular, non-symmetrical shape of revolution, adapted for the treatment of a specific region of face. The applicator can carry one or more openings and / or openings that retain the product by capillarity.

It is noted that in relation to this date the best method known by the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.

Having described the invention as above, property is claimed as contained in the following

Claims (16)

1. A device for forming, in situ and at the desired size for the surface of the skin, a release film, characterized in that it carries: a composition capable of forming a film, a container containing the composition, an applicator carrying an application element, - a dripping element inside the container, the application element and the draining element are positioned so that the application element, after dripping, leaves when a film of a composition capable of forming is displaced in contact with the skin. a film which, after drying, becomes detachable and has a mass per unit area of preferably between 1 and 15 mg / cm 2, the composition capable of forming a film preferably comprises at least one active substance intended for cosmetic treatment and / or skin pharmacist.

2. The device according to claim 1, characterized in that said application element is an external capillary, preferably carrying on its surface a coating consisting of hairs advantageously deposited by an electrostatic process on a non-porous support.

3. The device according to claim 2, characterized in that the length of the hairs is between 0.2 and 1.5 mm, preferably of the order of 1 mm.

4. The device according to any of claims 1 to 3, characterized in that said runoff element is constituted by a block of foam, preferably a cell foam or open cells.

5. The device according to any of the preceding claims, characterized in that said composition capable of forming a film carries at least one polymer chosen from the group consisting of: polyvinyl alcohol, soluble latex, EVA, polyurethane, acrylic resin.

6. The device according to any of the preceding claims, characterized in that the composition capable of "forming a film carries a water-soluble polymer and an aqueous solvent.

7. The device according to claim 5, characterized in that the polymerization of said composition capable of forming a film is reversible, so that the film deposited on the skin is washable.

8. The device according to any of the preceding claims, characterized in that the film deposited on the skin has a mass per unit area between 1.5 and 5 mg / cm2.

9. The device according to any of the preceding claims, characterized in that the composition capable of forming a film is chosen in such a way that the drying time on the skin is comprised between 1 and 5 minutes, preferably between 2 and 4 minutes

10. The device according to any of the preceding claims, characterized in that the applicator carries a rod provided at one end of the application element and at the other end a fastening element that also constitutes a closure cap for the container, the fastening element is internally threaded and the container has a neck threaded externally in its lower part only, for the screwing of the fastening element.

11. The device according to claim 10, characterized in that the rod is flexible.

12. A method for forming a release film in situ and at the desired size on the surface of the skin, characterized in that it comprises the steps consisting of: applying to the skin by means of an application element, preferably an external capillary , a layer of substantially constant thickness of a composition capable of forming a film coming from a container provided with a drainage element, the application element and the draining element are chosen in such a way that the application element leaves on the surface from the skin a release film having a mass per unit area between 1 and 15 mg / cm2, allowing the composition capable of forming a film deposited on the skin to dry by the application element.

13. A method of cosmetic treatment, characterized in that it comprises the steps consisting of: applying to the skin by means of an application element, preferably an external capillary, a layer of substantially constant thickness of a composition capable of of forming a film coming from a container provided with a draining element, the application element and the draining element are chosen in such a way that the application element leaves on the surface of the skin a detachable film having a mass of unit of surface comprised between 1 and 15 mg / cm2, the composition capable of forming a film furthermore carries one or more active substances having a cosmetic action on the skin, allowing the composition capable of forming a film deposited on the skin to dry. element of "application during the useful life of the treatment, - remove the film.

14. The method according to the preceding claim, characterized in that it also comprises the step consisting of: applying on the film of the composition capable of forming a film, after drying, a makeup product.

15. The use of at least one active substance having a curative effect on the skin in the manufacture of a composition capable of forming a film, intended to be applied to the skin by means of the device as defined in claim 1 to form a removable film, this composition capable of forming a film constitutes after drying on the surface of the skin a film having a mass per unit area comprised between 1 and 15 mg / cm2.

16. A patch obtained by means of the device as defined in claim 1, characterized in that it carries a composition capable of forming a film to be polymerized, at least one active substance intended for the cosmetic and / or pharmaceutical treatment of the skin, which it has a substantially constant thickness and a mass per unit area between 1 and 15 mg / cm2, preferably between 1 and 10 mg / cm2 and preferably between 1.5 and 5 mg / cm2.