Preparation and application device for a two-phase fluid cosmetic composition - Patents.com

Abstract

The present invention relates to a device (10) for preparing and applying a two-phase fluid cosmetic composition, comprising a container (12) extending along a major axis and defining an internal volume (30) capable of containing said cosmetic composition, said container (12) having a neck (26) providing access to said internal volume; and a mixing member (42) contained in the internal volume of the container, wherein the mixing member comprises a plurality of elongated filaments (60), each having a first end (62) of said filaments coupled to the neck of the container such that the filaments are separated in pairs from the neck by a non-zero distance (66) spanning at least 50% of the height (34) of the internal volume; and wherein the mixing member is fixed in rotation relative to the container.

Description

[Technical field]

[0001] The present invention relates to a device for preparing and applying a two-phase fluid cosmetic composition, the device comprising a container extending along a major axis and defining an internal volume capable of containing said cosmetic composition, the container comprising a neck disposed on the major axis and providing access to said internal volume, and a mixing member contained in the internal volume of the container. [Background technology]

[0002] The term "cosmetic composition" refers according to the present invention to the products as defined in Regulation (EC) No. 1223 / 2009 of the European Parliament and of the Council of 30 November 2009 on cosmetic products.

[0003] It is common to use two-phase cosmetic compositions, which comprise two immiscible phases, generally an aqueous phase and an oily phase.

[0004] The application of the above cosmetic composition requires the premixing of the two phases in the form of an emulsion, which must be of sufficient quality and stability to allow uniform application of the two phases, for example to the skin or to keratinous materials.

[0005] Typically, emulsion of the two phase composition is performed by simply shaking the container prior to application, and the resulting emulsion is generally only optimal after significant shaking, making the product cumbersome to use.

[0006] In particular, from the document DE 10 200 43 331 A1 in the name of the Applicant, it can be seen that the vessel is equipped with a rotating mixing element, the rotation of which inside the vessel brings about the mixing of the composition.

[0007] However, such moving mixing members complicate the manufacture and use of the preparation and application device. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] US Patent Application Publication No. 2017 / 0311698 Summary of the Invention [Problem to be solved by the invention]

[0009] The present invention has the object of proposing a device which is simple to manufacture and use and which, moreover, allows the two-phase cosmetic composition to be easily emulsified before use. [Means for solving the problem]

[0010] To this effect, the present invention has as its object an adjustment and application device of the above-mentioned type, wherein the mixing member comprises a plurality of stretched filaments, a first end of each of said filaments being coupled to the neck of the container, the filaments being separated in pairs from said neck by a non-zero distance spanning at least 50% of the height of the internal volume, the mixing member being fixed in rotation with respect to the container, the adjustment and application device further comprising a tip portion adapted to be inserted into the neck of the container, the first end of each of the filaments of the mixing member being integral with said tip portion, said tip portion comprising at least one through-orifice providing access to the internal volume of the container.

[0011] According to further advantageous aspects of the invention, the preparation and application device comprises one or more of the following features, taken alone or in any technically possible combination: The plurality of filaments comprises at least 5 filaments, preferably 6 to 20 filaments. each filament has a substantially helical winding about a main axis; the mixing member further comprises a head arranged substantially on the main axis, the second end of each of the filaments being integral with said head. the filament defines an envelope surface centered on the major axis, such that the intersection of said envelope surface with a plane passing through the major axis has a rounded contour. - in a plane perpendicular to the main axis, the minimum distance between the envelope surface and the container is not less than 10 mm. the mixing member further comprises a substantially straight post connecting the head to the neck of the vessel, the filaments being disposed around said post; in a plane orthogonal to the main axis, the cross section of at least one filament has a substantially oval shape, the largest dimension of said oval being oriented in the radial direction. a first end of the filament is disposed around the one or more through openings; The preparation and application device further comprises a two-phase fluid cosmetic composition contained within the interior volume of the container. The two-phase fluid cosmetic composition comprises an aqueous phase and an organic phase, the aqueous phase representing from 50% to 99% by weight of said two-phase fluid cosmetic composition.

[0012] The invention will be more readily understood in the light of the following description, given purely by way of non-limiting example and with reference to the drawings in which: [Brief description of the drawings]

[0013] [Figure 1] FIG. 2 is a longitudinal section of a conditioning and application device according to an embodiment of the present invention, comprising a mixing member; [Diagram 2] FIG. 2 is a cross-sectional view of the device of FIG. 1. [Diagram 3] FIG. 3 is a detailed view in longitudinal section of the mixing element of the device of FIGS. 1 and 2. [Figure 4] FIG. 4 is a cross-sectional view of the mixing element of FIG. 3. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] FIG. 1 shows a longitudinal section of a preparation and application device 10 according to a first embodiment of the invention.

[0015] Device 10 specifically includes a container 12 , a cover 14 , and an insert 16 .

[0016] Container 12 extends along a first axis 20 and specifically includes a bottom 22, a sidewall 24, and a neck 26 defining an upper opening 28. Neck 26 specifically has an inner diameter 29.

[0017] The container 12 defines an interior volume 30 with an upper opening 28 leading to said interior volume.

[0018] In the illustrated embodiment, the container 12 has a shape of revolution substantially about a first axis 20, with the upper opening 28 being specifically centered about said first axis.

[0019] The neck 26 preferably includes an assembly element 31 with the cover 14, such as threading disposed on the outer wall of said neck.

[0020] Preferably, the container 12 is formed from one piece. Preferably, the container 12 is formed from a transparent or translucent material, such as glass. The interior volume 30 is therefore visible through the side wall 24.

[0021] The interior volume 30 preferably has an elongated shape. More precisely, the maximum transverse dimension 32 of the interior volume 30, perpendicular to the first axis 20, is preferably less than or equal to 50% of the height 34 of the interior volume 30 along the first axis 20.

[0022] According to a preferred embodiment, the device 10 further comprises a two-phase fluid cosmetic composition contained in the interior volume 30 of the container 12. The term "fluid" means that the composition is liquid or viscous. Specifically, a two-phase fluid cosmetic composition comprises an aqueous phase and an oily or organic phase, said two phases being immiscible.

[0023] Preferably, the aqueous phase represents 50% to 99% by weight of said two-phase fluid cosmetic composition. Specifically, the aqueous phase represents preferably at least 90% by weight, more preferably at least 95% by weight of said two-phase fluid cosmetic composition. In a particular embodiment, the aqueous phase represents 97% by weight of said two-phase fluid cosmetic composition and the oily phase represents 3% by weight of said two-phase fluid cosmetic composition.

[0024] The mixing device 10 according to the invention is particularly suitable for mixing and emulsifying aqueous and oily phases having a relatively low respective viscosity, in other words a specific viscosity, which is in particular less than or equal to 20 mPa.s (milliPascal seconds).

[0025] The viscosity of the aqueous and oily phases of the two-phase fluid cosmetic composition is measured separately using a RHEOMAT RM180 viscometer. The measurements are carried out after 24 hours standing at ambient temperature (25° C.) using spindle M1 equipped with the measuring device. The measurements are carried out at controlled ambient temperature (25° C.). The viscosity of the aqueous and oily phases of the two-phase fluid cosmetic composition is measured at T0=30 seconds and T 10 = Analyzed with 10 min of stirring.

[0026] Preferably, the aqueous phase of the two-phase fluid cosmetic composition has a viscosity of less than 5 mPa.s (milli-Pascal seconds) at T0=30 seconds, in particular between 1 mPa.s and 2.5 mPa.s, in particular close to 1.6 mPa.s, and 10 At 10 minutes, it has a viscosity of less than 4 mPa.s, specifically between 1 mPa.s and 2 mPa.s, specifically close to 1.2 mPa.s.

[0027] Preferably, the oily phase of the two-phase fluid cosmetic composition has a viscosity at T0=30 seconds of less than 20 mPa.s (milli-Pascal seconds), in particular comprised between 6 mPa.s and 16 mPa.s, in particular close to 11 mPa.s. 10 The viscosity at T0 = 10 min is virtually identical to that at T0 = 30 s.

[0028] The viscosity of an emulsified two-phase fluid cosmetic composition, in which the aqueous phase and the oily phase are emulsified, is less than the viscosity of the most viscous layer of the composition, i.e., the oily phase.

[0029] The two-phase fluid cosmetic composition is preferably a skin care and / or eye care composition, a make-up remover product, a lotion or other cosmetic composition that is capable of adopting a two-phase form.

[0030] The cover 14 is mountable in a removable manner to the neck 26 of the container 12 so as to close the upper opening 28. The cover 14 has, for example, a substantially cylindrical shape and includes a threading 36 capable of cooperating with the threading 31.

[0031] The insert 16 is preferably made from a material having a stiffness less than that of the container 12. More precisely, the insert 16 is preferably elastically deformable at least in bending and / or torsion. The insert 16 is made, for example, from a polymer material of the polyketone (PK) type, which is particularly suitable for the oily phase of a two-phase fluid cosmetic composition and its components.

[0032] The insert 16 includes a tip portion 40 and a mixing member 42 adjacent along a second axis 44. Preferably, the tip portion 40 and the mixing member 42 are formed from a single piece.

[0033] Tip 40, which can also be seen in FIGS. 3 and 4, includes ring 50, ring 52, and reducing washer 54.

[0034] Ring 50 has a substantially cylindrical shape of revolution with one outer diameter substantially equal to inner diameter 29 of neck 26 of vessel 12. Ring 52 forms a radial projection around a first axial end of ring 50.

[0035] 1, the ring 50 is inserted into the neck 26 of the container 12 such that the first axis 20 and the second axis 44 are intermingled. The ring 52 forms an axial joint with the upper end of the neck 26. The insert 16 thus assembled in the container 12 is fixed relative to said container for rotation about the first axis 20 and the second axis 44.

[0036] A second axial end of the ring 50 abuts a weight reducing washer 54, the function of which is to form a passage of reduced size between the interior volume 30 of the container 12 and the exterior of the device 10.

[0037] More precisely, the washer 54 closes the second end of the ring 50, except for at least one through opening 56 formed in said washer, the maximum dimension of said through opening 56 in a plane perpendicular to the second axis 44 being preferably not more than 50%, more preferably not more than 25%, of the inside diameter 29 of the neck 26.

[0038] As can be seen in FIG. 4, in the illustrated embodiment, the washer 54 includes three separate through openings 56 regularly distributed at an angle about the second axis 44 .

[0039] Advantageously, the insert 16 calibrates the dosage of the formulation delivered during bottle inversion by means of one or more through openings 56 provided in a washer 54 of the ring 50. In particular, the washer 54 has a diameter of 2 mm. 2 ~5mm 2 Included in, preferably 3.3 mm 2 The casing 50 has three through openings 56 each having a cross section approximating

[0040] The mixing member 42 of the insert 16 is adjacent to the washer 54 and is received in the interior volume 30 of the vessel 12 .

[0041] The mixing element 42 extends into the interior volume 30 over a height 58 measured along the second axis 44. The height 58 is preferably equal to or greater than 50%, more preferably equal to or greater than 75%, and more preferably equal to or greater than 80%, of the height 34 of the interior volume 30.

[0042] The mixing member 42 includes a plurality of filaments 60 extending into the interior volume 30. A first end 62 of each of the filaments 60 is integral with a washer 54 opposite the ring 50. In the illustrated embodiment, the first ends 62 of the filaments 60 are disposed about the through openings 56, as seen in FIG.

[0043] Each filament 60 has an elongated shape and extends between a first end 62 and a second end 64. The term "elongated shape" means that the maximum dimension of each cross-section of each filament 60 between the first end 62 and the second end 64 of each filament 60 is less than 10%, preferably less than 5%, of the length of said filament between said first end 62 and said second end 64.

[0044] The filaments 60 are separated in pairs by a non-zero distance over at least a portion of the height 58 of the mixing member 42 , said portion representing at least 50% of the height 34 of the interior volume 30 .

[0045] Preferably, the mixing member 42 includes at least 5 filaments 60, more preferably between 6 and 20 filaments.

[0046] In the illustrated embodiment, as seen in Fig. 2, the mixing member 42 comprises twelve substantially identical filaments 60 regularly distributed at an angle about said second axis 44. Two angularly adjacent filaments 60 are separated by a non-zero distance 66 between a first end 62 and a second end 64. The filaments 60 thus enclose a central space 67 centered about said second axis 44.

[0047] In a plane perpendicular to second axis 44, cross section 68 of each filament 60 preferably has a substantially oval shape with the largest dimension of said oval oriented radially relative to said second axis 44. This configuration is more preferably such that cross section 68 has a substantially oval contour with one most tapered end of said contour oriented toward second axis 44.

[0048] Preferably, each filament 60 has a substantially helical winding about the second axis 44. In particular, for each filament 60, the second end 64 is angularly offset about the second axis 44 with respect to the first end 62 by an angle comprised between 20° and 50°, in particular close to 35°.

[0049] According to a non-illustrated embodiment, the second ends of the filaments are free-standing. In the illustrated embodiment, the mixing element further comprises a head 70 disposed substantially on the second axis 44. The second ends 64 of each of the filaments 60 are integral with said head 70.

[0050] Preferably, the head 70 has the shape of an ogive that points towards the bottom 22 of the container 12 .

[0051] The filament 60 defines an envelope 72 of revolution about the second axis 44. The envelope 72 has a rounded shape and expands from the first end 62 to a maximum diameter 74 and then tapers to the second end 64.

[0052] Preferably, in a plane perpendicular to the first axis 20, the minimum distance 76 between the envelope surface 72 and the side wall 24 of the container is greater than or equal to 10 mm. Preferably, said minimum distance 76 is greater than or equal to 10%, more preferably greater than or equal to 20%, of the transverse dimension of the interior volume 30 at said minimum distance.

[0053] Preferably, the distance 66 between two adjacent filaments 60 reaches a maximum value between the first end 62 and the second end 64, said maximum value being less than or equal to 5 mm, in particular close to 2 mm.

[0054] In the illustrated embodiment, the mixing member 42 further includes a strut 80 extending into the central space 67 between the washer 54 and the head 70. The strut 80 is substantially straight and is disposed along the second axis 44. In the illustrated embodiment, as seen in FIG. 4, the through opening 56 of the washer 54 is disposed around the strut 80. The central strut 80 of the mixing member 42 specifically allows the mixing member 42 to be rigid, particularly in bending, so that the mixing member 42 remains properly centered inside the container 12 it comprises during agitation of the mixing member 42. Moreover, this strut 80 disposed in the central space 67 defined by the filaments 60 allows for further facilitating the emulsion of the phases of the two-phase fluid cosmetic composition.

[0055] According to an alternative form not shown, the mixing element 42 is unstrutted. The presence or absence of said struts makes it possible in particular to modify the stiffness of the mixing element.

[0056] Preferably, the mixing member 42 is configured so that it can be inserted into the container 12 by means of the neck 26. If the maximum diameter 74 is larger than the inner diameter 29 of said neck, the filaments 60 can be elastically deformed during insertion, particularly in the radial direction. The container 12 can be made in a single block of a hard material, such as glass.

[0057] A method for using the packaging and application device 10 will now be described.

[0058] Initially, the cover 14 closes the neck 26 of the container 12, with the interior volume 30 containing a quantity of a two-phase fluid cosmetic composition as described above.

[0059] A user grasps the container 12 and applies a shaking motion to the container 12 in a direction substantially along the first axis 20. The cosmetic composition is thus shaken inside the internal volume 30 and moved between the filaments 60 of the mixing member 42. Specifically, the cosmetic composition moves continuously from the inside to the outside of a central space 67 located in the middle of said filaments 60.

[0060] The repeated movement between the filaments 60 subjects the cosmetic composition to shear, promoting the formation of an intimate emulsion of the two phases of said composition. The struts 80 provided within the interior space 67 defined by the filaments 60 advantageously make it possible to reinforce this phenomenon of shearing of the phases of the two-phase cosmetic composition, promoting its intimate emulsion.

[0061] The user views the condition of the cosmetic composition through the side wall 24 of the container 12. Once a satisfactory emulsion is achieved, the user unscrews the cover 14 and dispenses a dose of the cosmetic composition onto the user's hand. The size of the through opening 56 in the tip 40 is configured to restrict the flow rate of the composition to improve control of the dispensed dose.

[0062] If the phases of the cosmetic composition separate after a period of non-use, the user can easily reconstitute the emulsion before using the composition.

[0063] In particular, the device 10 described above makes it possible to obtain a homogeneous mixture of the two phases of the cosmetic composition after fewer vibration cycles than would be expected with a container 12 without the mixing member 42. [Explanation of symbols]

[0064] 10 Devices 12 containers 14 Cover 16 Insert 20 First axis, main axis 22 Bottom 24 Side wall 26 Neck 28 Upper opening 29 Inner diameter 30 Internal volume 31 Assembly elements, threading 32 Maximum transverse dimension 34 Internal volume height 36 Tapping 40 Tip 42 Mixed materials 44 Second Axis, Main Axis 50 Rings 52 Ring 54 Weight loss washer 56 Through hole 58 Height of mixing element 60 filaments 62 First end 64 Second End 66 Non-zero Distance 67 Central space, interior space 68 Section 70 Head 72 Envelope 74 Maximum diameter 76 minimum distance 80 pillars

Claims

1. A packaging and application device (10) for a two-phase fluid cosmetic composition, comprising: A container (12) extending along a major axis (20, 44), said container (12) being formed in one piece and including a bottom (22), a sidewall (24) and a neck (26), said neck (26) being disposed on said major axis; the container (12) defines an interior volume (30) capable of containing the two-phase fluid cosmetic composition, the interior volume (30) having a first height (34); The neck (26) provides access to the interior volume, the neck having an inner diameter (29). A container (12); a mixing element (42) contained within the interior volume of the vessel; Including, the mixing element includes a plurality of elongated filaments (60), a first end (62) of each filament being coupled to the neck of the vessel, the filaments being separated from one another by a non-zero distance (66) over a second height, the second height corresponding to at least 50% of the first height of the interior volume; The mixing member is fixed relative to the container; the packaging and application device further comprises a tip (40) for insertion into the neck of the container, the first end (62) of each of the filaments (60) of the mixing element being integral with the tip, the tip comprising a through opening (56) providing access to the internal volume (30) of the container, the maximum dimension of the through opening (56) in a plane perpendicular to the main axis being no greater than 50% of the internal diameter (29) of the neck (26); the mixing element further includes a head (70) disposed on the main shaft, the second ends (64) of each of the filaments being integral with the head; The mixing element further includes a straight post (80) connecting the head (70) to the neck (26) of the vessel, the filament (60) being disposed around the post. A packaging and application device comprising:

2. The packaging and application device of claim 1 , wherein the plurality of filaments (60) comprises at least five filaments.

3. 3. A packaging and application device according to claim 1 or 2, wherein each filament (60) has a helical winding around said main axis (20, 44).

4. 4. The packaging and application device of claim 1, wherein the filament defines an envelope surface (72) about the major axis such that an intersection of the envelope surface with a plane passing through the major axis (20, 44) has a rounded contour.

5. 5. The packaging and application device of claim 4, wherein the minimum distance (76) between the envelope surface (72) and the container, in a plane perpendicular to the main axis, is greater than or equal to 10 mm.

6. 6. The packaging and application device of claim 1, wherein in a plane perpendicular to the major axis, a cross section (68) of at least one filament (60) has an oval shape, the largest dimension of the oval being oriented in a radial direction.

7. The packaging and application device of any one of claims 1 to 6, wherein the first ends (62) of the filaments are disposed about one or more through openings (56).

8. The packaging and application device (10) of any one of claims 1 to 7, further comprising a two-phase fluid cosmetic composition contained in the inner chamber (30) of the container.

9. 9. The packaging and application device (10) of claim 8, wherein the two-phase fluid cosmetic composition comprises an aqueous phase and an organic phase, the aqueous phase representing from 50% to 99% by weight of the two-phase fluid cosmetic composition.

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