COSMETIC ARTICLE PROVIDED WITH A MESH

Abstract

A cosmetic article including a casing; a reservoir housed in the casing, including a thixotropic cosmetic composition and having an opening for dispensing the cosmetic composition; and a mesh covering the opening of the reservoir, configured to be impermeable to the cosmetic composition when it is not subject to a shear stress, and permeable to the cosmetic composition when it is subject to a shear stress.

Claims

1-15. (canceled)

16. A cosmetic article comprising: (i) a casing, (ii) a reservoir housed in the casing, comprising a thixotropic cosmetic composition and having an opening for dispensing said cosmetic composition, and (iii) a mesh covering said opening of the reservoir, configured to be impermeable to the cosmetic composition when the latter is not subject to a shear stress, and permeable to the cosmetic composition when the latter is subject to a shear stress.

17. The cosmetic article as claimed in claim 16, wherein the cosmetic composition comprises an oil-in-water emulsion having an aqueous phase and a fatty phase, the aqueous phase comprising a thixotropic gelling agent.

18. The cosmetic article as claimed in claim 17, wherein the thixotropic gelling agent is a nonionic block copolymer comprising at least one hydrophilic portion and a hydrophobic portion.

19. The cosmetic article as claimed in claim 18, wherein the hydrophilic portions and the hydrophobic portions are connected by at least one urethane bond.

20. The cosmetic article as claimed in claim 18, wherein the nonionic block copolymer is chosen from polyurethanes and derivatives thereof.

21. The cosmetic article as claimed in claim 18, wherein said hydrophilic portion is polyoxyethylene-based and/or wherein said hydrophobic portion is hydrocarbon-based.

22. The cosmetic article as claimed in claim 18, wherein the nonionic block copolymer consists of a chain of three successive blocks, the first and the third block having hydrophilic properties and the second block having hydrophobic properties.

23. The cosmetic article as claimed in claim 17, wherein the content by weight of the thixotropic gelling agent relative to the total weight of the composition is between 0.01% and 20%, preferably between 0.5 and 10%, more preferably still from 1 to 5%.

24. The cosmetic article as claimed in claim 16, wherein the cosmetic composition has a plateau viscosity of greater than or equal to 2500 Pa.Math.s, preferably greater than or equal to 2700 Pa.Math.s.

25. The cosmetic article as claimed in claim 16, wherein the cosmetic composition has a yield stress of less than or equal to 60 Pa, preferably less than or equal to 55 Pa.

26. The cosmetic article as claimed in claim 16, wherein the cosmetic composition has a complex modulus G* of between 200 and 600 Pa, preferably between 300 and 500 Pa.

27. The cosmetic article as claimed in claim 16, wherein the cosmetic composition has a phase angle of between 7 and 20, preferably between 7 and 10.

28. The cosmetic article as claimed in claim 16, wherein the mesh comprises polyethylene terephthalate fibers and polyurethane fibers.

29. The cosmetic article as claimed in claim 16, wherein the mesh consists of woven knitted fibers.

30. The cosmetic article as claimed in claim 16, further comprising means for ensuring the leaktightness of the reservoir, preferably a cover on which a seal is mounted, preferably a polyethylene terephthalate seal.

Description

[0167] The invention may be better understood using the nonlimiting exemplary embodiment described below, and with reference to the attached drawing, in which:

[0168] FIG. 1 shows an exploded view of an exemplary embodiment of the cosmetic article according to the invention,

[0169] FIG. 2 shows a sectional view of the cosmetic article of FIG. 1,

[0170] FIG. 3 is a more precise sectional view of a detail of FIG. 2, and

[0171] FIG. 4 shows a preferred knit weave for the mesh of the cosmetic article according to the invention.

[0172] The cosmetic article 1 illustrated in FIGS. 1 to 3 comprising a casing for cosmetic product, comprising a main body in which a refillable and removable container 6 may be placed.

[0173] The casing is made of polypropylene or ABS. It is composed of a bottom 2 serving as housing for the refill container, and a cover 3 articulated to rotate on the bottom 2, the opening of which is subject to the actuation of a push-button 4. A puff 5 or an applicator sponge is positioned between the refillable container 6 and the cover 3 when the casing is in the closed position.

[0174] In order to arrange the housing, the bottom is fitted with a mounting plate 7, the walls of which are fitted with projections.

[0175] The refillable container 6 comprises a body 61 serving as reservoir for the cosmetic product, comprising a bottom, walls and an opening at the top making it possible to dispense the cosmetic product. It comprises at its base a groove which enables the container to fit inside the projections of the wall of the mounting plate. In this way, the container is put in place and blocked inside the casing by means of a snap-fastening mechanism.

[0176] The container further comprises a cover 62, articulated to rotate on the body 2 and associated with a closing mechanism for holding the cover closed against the body. This mechanism is equipped with three projections, being introduced into slots in the body to produce a snap-fastening, which ensures the leaktightness of the device after closing the cover on the body of the container. The cover may optionally be fitted with a seal 63 made of polyethylene terephthalate PET, adhesively bonded to the inner face of the cover 62.

[0177] A mesh 8 extends above the opening of the body, stretched and overmolded to a ring 9 which fits into a notch on the body 61 of the container 6. The overmolding may have been performed by any technique, especially by ultrasound. The ring 9 is preferably made of ABS; it has an outer wall, an inner wall, an upper surface and a lower surface. It comprises a notch on its outer wall, configured to receive the projection of the body of the container so as to allow the body 61 and the ring 9 to fit together. A planar surface is formed on the upper surface, extending from the inner edge of the ring. This surface may for example accommodate the seal 63. The mesh 8 is stretched at this planar surface.

[0178] The mesh 8 is configured such that the dispensing of the product contained in the body of the container can be effected through it. The mesh is composed of a majority of polyurethane fibers and a minority of PET fibers. These fibers are woven according to a knit weave illustrated in FIG. 4. This gives it sufficient elasticity to make it possible to reach the bottom and the corners of the body of the container.

[0179] The reservoir contains a thixotropic cosmetic composition. This composition has, for example, the formulation of composition 1 or composition 2 of table 1 below.

[0180] In table 1, the amounts are expressed as percentage by weight relative to the total weight of the composition.

TABLE-US-00001 TABLE 1 Formulations of compositions 1 to 4 Composition Composition Composition Composition Class of ingredients/INCI name 1 2 3 4 PEG-10 DIMETHICONE 6 DIMETHICONE & 2 TRIMETHYLSILOXYSILICATE/ DIMETHICONOL CROSSPOLYMER METHYL TRIMETHICONE 7 CYCLOPENTASILOXANE 11.15 DISTEARDIMONIUM HECTORITE 0.15 ETHYLHEXYL 6.8 6.8 3 METHOXYCINNAMATE & BHT TITANIUM DIOXIDE & STEARIC 3 3 5 ACID & ALUMINA & SILICA TRIMETHYLSILOXYSILICATE 4 POLYMETHYLSILSESQUIOXANE 2 2 DIMETHICONE/VINYL 6 DIMETHICONE CROSSPOLYMER & ISOCETETH-10 METHYL METHACRYLATE 2.5 CROSSPOLYMER CALCIUM SILICATE 0.6 POLYSORBATE 85 & AQUA 4 4 (WATER) PEG-240/HDI COPOLYMER BIS- 3.25 3.25 DECYLTETRADECETH-20 ETHER & AQUA (WATER) & POTASSIUM LAURATE & TOCOPHEROL SILICA 3 3 ISONONYL ISONONANOATE 1.75 1.75 HYDROGENATED LECITHIN 1 1 CETYL ETHYLHEXANOATE 1 1 DICAPRYLYL CARBONATE 0.75 0.75 SORBITAN LAURATE 0.6 0.6 0.5 CI 77891 (TITANIUM DIOXIDE) & 0.5 0.5 ALUMINUM HYDROXIDE & STEARIC ACID VP/EICOSENE COPOLYMER 0.5 0.5 DIMETHICONE 0.5 0.5 3.8 7 POTASSIUM SORBATE 0.45 0.45 CAPRYLYL GLYCOL 0.4 0.4 HYDROXYETHYL 0.3 0.3 ACRYLATE/SODIUM ACRYLOYLDIMETHYL TAURATE COPOLYMER & SORBITAN ISOSTEARATE & POLYSORBATE 60 TOCOPHERYL ACETATE 0.2 0.2 0.2 XANTHAN GUM 0.1 0.1 CITRIC ACID 0.07 0.07 SODIUM HYALURONATE 0.05 0.05 SQUALANE 6.5 HYDROGENATED 6 POLYISOBUTENE & DISTEARDIMONIUM HECTORITE & PROPYLENE CARBONATE DIMETHICONE & 5.5 DIMETHICONE/PEG-10/15 CROSSPOLYMER & DIPROPYLENE GLYCOL & TOCOPHEROL DIMETHICONE & DIMETHICONE 5 CROSSPOLYMER PEG-9 2.5 POLYDIMETHYLSILOXYETHYL DIMETHICONE SYNTHETIC FLUORPHLOGOPITE 2 ADENOSINE 0.04 GELLAN GUM 0.1 AQUA (WATER) 56.08 55.98 38.51 21.75 SODIUM CHLORIDE 1 0.5 AQUA (WATER) & 4 4 8 2 PHENOXYETHANOL & BIOSACCHARIDE GUM-1 GLYCERIN 3 3 5 3 ALCOHOL 2 2 4.5 5 PARFUM (FRAGRANCE) 0.4 0.4 0.2 0.35 Preservatives 0.8 0.8 0.75 0.5 Pigments 5.5 5.5 8 10.50 TOTAL 100 100 100 100

[0181] Formulations 1 to 4 were characterized according to the methods described above. The results of these characterizations are reported in the table below.

TABLE-US-00002 TABLE 2 Characterization of compositions 1 to 4 Compo- Plateau Yield Viscosity Complex sition viscosity stress 100s1 modulus G* Phase angle no. (Pa .Math. s) (Pa) (Pa .Math. s) (Pa) (degrees) 1 2743 25.3 1.3 314.8 8.2 2 3628 54.8 1.6 432.8 7.3 3 14,770 55.9 3.5 663.6 6.7 4 822 1.8 1.6 29.3 6.6

[0182] Compositions 1 and 2 have a relatively low yield stress, a moderate rigidity reflected by an intermediate complex modulus G*, as well as a moderate elasticity reflected by a sufficiently low . These properties afford these two compositions the rheological properties necessary for good stability on transport in the cosmetic article according to the invention, while facilitating the extrusion of the composition through the mesh and adhering to the applicator sponge by virtue of the combination of a low complex modulus G* and a low phase angle . Furthermore, the viscosities at 100 s-1 of compositions 1 and 2 are sufficiently low for these compositions to spread easily on the skin in the manner of a fluid composition.

[0183] Composition 3 is a gelled composition which has a very high plateau viscosity, as well as a high modulus G* and yield stress. This reflects a significant consistency at rest but insufficient elasticity to allow collection thereof through the mesh of the article according to the invention with an applicator sponge. In addition, the viscosity at 100 s-1 of this composition is high, which is synonymous with poor spreading of composition 3 on the skin.

[0184] Composition 4 has a low yield stress, a low complex modulus G*, and a low phase angle . This reflects the fact that composition 4 flows spontaneously. Consequently, the composition is not compatible with the cosmetic article according to the invention, because the composition could flow through the mesh, which is not compatible with portable use of the product.

[0185] It is understood that the described embodiments are nonlimiting and that it is possible to make improvements to the invention without departing from the scope thereof.

[0186] Unless otherwise stated, the word or is equivalent to and/or. Similarly, the word one is equivalent to at least one unless otherwise specified.