JP2019509779A - Cosmetic article with mesh - Google Patents

Abstract

A cosmetic article (1) comprising: a solid block (14) of a cosmetic product, having a fracture index between 0.2 N and 20 N, when measured at -20 ° C; Said cosmetic article (1) comprising at least one mesh (15) having a through-hole (16), the maximum dimension of which is between 50 μm and 300 μm. [Selection] Figure 1

Description

  The present invention relates to a cosmetic article, particularly for lips.

  Lipsticks typically comprise cosmetic product tubes and blocks, referred to as “burettes,” which are movably housed in a longitudinal movement in the tube. The burette formulation is selected to obtain the best possible make-up results while ensuring that the burette provides strength, particularly mechanical and thermal strength. Thus, the proportions of the four main components of the burette, namely wax, oil, butter and pigment can be adjusted. Wax acts as a structural element.

  In order to obtain good makeup results, for example better color, gloss or matte results, it is preferred to reduce the fastness of the burette, for example by increasing the proportion of oil and butter. And the resulting formulation is more flexible or softer. However, this increase reduces the mechanical strength of the burette, thereby making it more fragile. This increase not only changes the initial formulation of the burette, but also causes exudation that negatively impacts the consumer. In this regard, it should be remembered that the user tends to hold this type of cosmetic article for several years.

  The object of the present invention is therefore to improve cosmetic articles.

The present invention is therefore a cosmetic article comprising:
A solid block of a cosmetic product having a fracture index between 0.2 N and 20 N when measured at −20 ° C .;
-A cosmetic article comprising at least one mesh, arranged such that the cosmetic product passes therethrough, having a through-hole, the maximum dimension of which is between 50 μm and 450 μm.

  The fracture index indicates the mechanical strength of the block. In the above range of values, the solid block of the cosmetic product limits the risk of the burette breaking when, for example, the applicator is dropped and banged when carried in a handbag or in use. It is strong enough.

  In use, the product block passes through a mesh that structurally breaks the portion of the product block so that it changes from a solid state to a paste state. This situation is particularly advantageous as it allows a better application of the product. In the case of lipsticks, this condition allows the user to obtain better color, gloss or matte results, for example.

  Therefore, the advantage of the solid form of the cosmetic product when not in use, the advantage of the paste form at the time of use, the disadvantage of the solid form of the product at the time of use, that is, the application of the product is difficult and the makeup result is not very satisfactory As well as the disadvantages of the paste form of the product, such as poor mechanical properties and exudation, when not in use.

  The above range of maximum pore size sizes gives good block structure failure results that allow the user to obtain the dose required for makeup without having to apply undue force. Furthermore, the fact that the blocks are in a particular solid form can result in formulations that give particularly good gloss or matte results, and these formulations are compatible with the more flexible block forms. It means not. Furthermore, the change from the solid state to the paste state of the product due to the above features such as mechanical strength and pore size in the mesh requires any other operation in the product, for example a heating operation. It is particularly advantageous not to do so.

  The maximum dimension of the pores may be between 100 and 400 μm, preferably between 150 and 350 μm, more preferably between 200 and 300 μm.

  Advantageously, at least one of the meshes is arranged such that the minimum distance from edge to edge between the holes is between 100 μm and 300 μm.

  This arrangement also helps the user to obtain good block structure failure results without having to apply undue force. The minimum distance between various adjacent holes in the mesh may not be constant between the various holes. The distribution of the minimum distance between adjacent holes in the mesh can also allow cosmetic products passing through the mesh to be sent in the required direction.

  The minimum distance between the holes may be between 120 μm and 280 μm, preferably between 140 μm and 240 μm, more preferably between 180 μm and 220 μm.

  Preferably, the mesh or at least one of the meshes is woven.

  The mesh is therefore composed of interwoven weft and warp threads.

  These yarns can have different diameters. Using this special arrangement, in particular the product passing through the mesh is sent in the required direction, for example to obtain a specific makeup result.

  At least one of the mesh or mesh may comprise a plate with holes.

  This mesh is obtained, for example, by machining, and in other cases is used to provide an opening-shaped contour, such as a circle, an ellipse, etc., which is difficult to obtain by, for example, weaving.

  Preferably all of the holes in the mesh or at least one of the meshes have a stackable profile.

  Therefore, the product paste is evenly distributed in the mesh when leaving the holes, allowing for a uniform application of the product.

  Advantageously, the mesh or at least one of the meshes has holes with contours that are not stackable.

  The paste can therefore be more concentrated at one or more specific locations in the face of the mesh to obtain a certain effect when applying the cosmetic product or to apply the cosmetic product more accurately.

  Preferably, the hole contour has one of the following shapes: rectangular, pentagonal, hexagonal, octagonal, circular, oval or elliptical.

  Some of these various shapes also help to direct the product as it passes through the mesh.

  More preferably, the article comprises at least two meshes, one in the direction in which the product passes through the mesh, one behind the other.

  This feature offers several advantages. Due to the presence of several meshes, the products are guided more accurately and each mesh sends the product a little in the required direction. These continuous meshes also reduce the force required by the user to change some cosmetic product blocks from solid to pasty. Thus, the upstream mesh first causes structural failure of the part of the product, which is then further structurally broken through the downstream mesh.

  Advantageously, the two meshes form an upstream and a downstream mesh, wherein the maximum hole size in the upstream mesh is greater than the maximum hole size in the downstream mesh, and the ratio between these two dimensions is preferably 1 and 100 or less.

  This feature facilitates the product changing from a solid state to a paste state. Thus, the solid product block first passes through a mesh with the largest sized holes, which causes the block to break down as it changes from a solid product to a pasty product, and then facilitates application and better makeup results It passes through a mesh with pores of minimum size, reducing the viscosity of the already pasted product so as to obtain a product that imparts.

  Preferably, the article further comprises at least one intermediate mesh between the upstream mesh and the downstream mesh, wherein the maximum pore size in the intermediate mesh is equal to the maximum pore size in the upstream mesh and the maximum pore size in the downstream mesh. Between.

  We thus progressively reduce the maximum size of the holes in the continuous mesh from the upstream mesh to the downstream mesh. The energy required to change the cosmetic product block from the solid state to the paste state is thus reduced. The user therefore applies less force when using the article.

  Advantageously, the cosmetic product is a cosmetic product for lips.

More preferably, the article is:
-A body having a helical inclination;
The product distribution tube having at least one linear slope, wherein the mesh is located at the distal end of the tube;
-A piston adapted to slide the product block inside the tube, attached to two studs which respectively proceed along a helical inclination of the body and a linear inclination of the tube. The piston is further provided.

  Therefore, when the user turns the body relative to the tube, the piston studs advance along their respective slopes, and the piston slides vertically along with the product block along the longitudinal axis of the article. Pushing and this movement occurs without the piston rotating around the axis and thus without the product block rotating. This feature is particularly advantageous because it helps the product block pass through the mesh. The fact that the product is dispensed without rotation also gives the advantage of giving the tube a bevel shape, which is generally preferred as it simplifies makeup.

We now describe an embodiment of the invention, given as a non-limiting example with reference to the figures:
FIG. 3 is a longitudinal cross-sectional view of an article according to three embodiments of the present invention. It is a perspective view of the mesh attached to the support body of the article | item shown in FIG. FIG. 3 is an enlarged partial plan view of the mesh shown in FIG. 2. FIG. 6 is an enlarged partial plan view of an alternative embodiment of a mesh. FIG. 2 is a longitudinal sectional view of a piston, a tube, and a main body of the article shown in FIG. 1. FIG. 9 is a longitudinal sectional view of each of the piston, tube, and main body of the article shown in FIG. 8. FIG. 10 is a longitudinal sectional view of each of the piston, tube, and main body of the article shown in FIG. 9. FIG. 3 is a longitudinal cross-sectional view of an article according to three embodiments of the present invention. FIG. 3 is a longitudinal cross-sectional view of an article according to three embodiments of the present invention. 1 is a schematic side view of a device used to measure the fracture index of a product block.

  The inventors describe a cosmetic article for lips with reference to FIGS. We consider below the case where this article is a lipstick. Obviously, the cosmetic product for lips may be different and is not limited to red lipstick, and the color of the cosmetic product is for example pink, black, brown, etc.

Device The outer box of the cosmetic article 1 shown in FIG. 1 includes a main body 2 and a cap (not shown). The body has a stop formed by a shoulder, against which the cap can contact so that the body partially fits into the cap.

  The body comprises two cylinder-shaped parts, for example a substantially square cross section in a plane transverse to the applicator body, the second cross section being smaller than the first cross section. These two cross sections are separated by a stop. The body is hollow and open at the distal and proximal ends. The opening 11 at the proximal end of the body is partially closed by a bottom 3 of the body extending from this end in a plane transverse to the applicator body.

  The cavity formed by the body 2 has a tube-like element 4 with a helical slope from the outside to the inside along the axis 13 of the body, a tube 5 whose main longitudinal axis 13 coincides, and A piston 6.

  The tubular element 4 (see FIG. 7) has a hollow, generally cylindrical shape with an annular cross section in a plane perpendicular to the longitudinal axis 13 and is open at both ends. The element has a substantially smooth outer surface and an inner surface with a groove forming a helical ramp 7 extending over the majority of the tubular element 4. FIG. 7 shows eight helical rotations. Obviously, the number of helical turns may vary more or less depending on the desired effect. The proximal end of this element is at the bottom 3. The distal end of element 4 extends substantially to the stop. This element is rigidly attached to the body 2 of the article.

  The tube 5 (see FIG. 6) forms a hollow cylinder having an annular cross section in a plane perpendicular to the shaft 13, and is open at both ends. The distal end of the tube 5 is beveled. Obviously, this end need not be beveled. The tube 5 has two slots that form two ramps 8 that extend from the proximal end of the tube to the central portion of the tube. The generally elongate linear slope is parallel to the axis 13. These slopes are diametrically opposite each other on each side of the axis.

  The piston 6 (see FIG. 5) forms a hollow cylinder having an annular cross section in a plane perpendicular to the shaft 13. The proximal end of the piston is open and its distal end is beveled, slightly retracted with respect to the distal end of the piston to form a cup into which the bottom of the burette is inserted 9 is closed. This improves the connection between the burette and the piston. In FIG. 1, the part 9 of the piston that closes the distal end is flat and is inclined with respect to the shaft 13 so that the part is also oblique. The piston has two opposite guide studs 10 projecting from the outer surface of the piston at the outer surface of its proximal portion. Obviously, these studs may be provided at other positions on the outer surface of the piston. These studs are adapted to travel along a straight slope 8 of the tube 5 and a helical slope 7 of the tubular element 4, respectively. Optionally, the piston further comprises a sealing bead 12 at its distal end that extends around the distal end of the piston. Other means for guiding the piston may also be suitable.

  The proximal part of the tube 5 is thus accommodated inside the body and the tubular element 4, and its distal part extends outwardly and protrudes from the body 2 of the article 1. The tube is mounted for rotation about an axis 13 relative to the assembly formed by the body 2 and the tubular element 4 by suitable guide means. The piston 6 is accommodated in the tube 5 so as to be able to move in translation due to the stud 10 which is adapted to travel along various inclinations 7 and 8.

  The article 1 further comprises a solid block lipstick or burette 14. This burette 14 has a non-hollow, generally cylindrical shape with an annular cross section in a plane perpendicular to the axis 13. The distal end of the burette 14 has a bevel shape. Obviously, this end may have different shapes, which are well known by those skilled in the art. The proximal part of the burette is at the distal end 9 of the piston 6. The piston is therefore driven by sliding the burette 14 along the axis 13 inside the tube 5.

  This burette has a failure index when measured at 20 ° C. of between 0.2 N and 20 N (ie, between approximately 20 gram force and 2000 gram force).

  This measurement is for example a reference test bench TCM201M and a force sensor 23 (power approx. 49 N) with a reference DFS of 5 kilograms force (kgf) sold by Chatillon at a rod drop rate of 132 mm / min. Total). The burette break index represents the average force that must be applied to break the burette.

  In this way, the temperature of the product is controlled after directly affecting the results. The burette may be heated to the required temperature before taking measurements by known methods. For example, the burette may be left in a chamber thermostatically controlled to 20 ° C. or in a room controlled to 20 ° C. The temperature of the product is measured using a thermometer inserted in the center of the buret before taking measurements to ensure that the temperature is between 19.5 ° C and 21.5 ° C.

  In general, a 1 kgf or 5 kgf force sensor may be used, and a 1 kgf force sensor allows measurement up to a maximum measurement value of 1000 gf (ie, approximately 9.8 N), beyond which a 5 kgf force sensor is Must be used.

  Referring to FIG. 10, the measurement is made with a tube 24 having the same diameter as the tube 5. The tube 24 is placed horizontally with the burette 14 in the original state as far away from the article as possible. The tube is fixed and held by the blocking ring 20 and the mounting screw 21, and the bevel-like surface of the burette is directed downward (see FIG. 10). The rod 22 with the inserted V-shaped stop descends vertically at the programmed speed, ie in this case at 132 mm / min, and hits the burette 14 to break it. The dynamometer 23 gives a value corresponding to the maximum compressive force measured when the burette breaks, that is, a fracture index. Several tests may be performed on a given burette formulation to calculate the mean and standard deviation of the failure index.

The article 1 further comprises a generally annular flat mesh 15. In the described embodiment, the mesh is, for example, a metal wire mesh comprising warp yarns 18 and weft yarns 19 that form generally rectangular holes 16. The fact that the mesh is made of metal is particularly advantageous for the most distal mesh, because when the product is applied to the lips, this cosmetic product produces a "refreshing" effect that is comfortable to the user. It is. The maximum dimension d of the hole 16, in this case the diagonal, is between 50 μm and 450 μm. The weft and warp yarns have diameters a, b between 100 μm and 300 μm, corresponding accordingly to the value of the minimum distance between the holes. The mesh 15 is firmly attached to the distal end of the tube 5 via the support 17. In this example, the holes are as follows:
-Maximum dimension: 280 μm,
-Width: 100 μm,
-Length: 261 μm,
-Warp diameter a: 150 μm,
-Weft diameter b: 100 μm
-Distance between holes: 100 μm.

  The support 17 has a generally cylindrical shape with an annular cross section in a plane perpendicular to the axis 13. The mesh 15 is interlocked with, for example, the support 17 by overmolding the support on the mesh, and the support is made of plastic. The support is connected to the tube 5 and this connection is made around the distal end of the tube.

  FIG. 4 represents an alternative mesh made by machining, where the holes 16 have any suitable shape, round, oval or other shape in this case.

Operation When the applicator is not used, the piston 6 is in its lowest position, ie its proximal end is in contact with the part 3 of the article. The bullet 14 is located at a certain distance from the mesh 15 (not shown), and is opposed to the mesh.

  In use, the user holds the article 1 with both hands, the first hand holds the end of the tube 5 protruding from the body of the article, and the other hand holds the article with a larger dimension. The main body 2 is held.

  The user applies a rotational movement around the axis 13 to the body 2 of the article relative to the tube. This rotational movement moves the helical inclination 7 of the tubular element 4 and the linear inclination 8 of the tube 5 via the two guide studs 10 of the piston. This movement causes a linear translation or sliding movement of the piston 6 along the axis 13, driving the piston with its burette 14. Translational movement continues until the burette 14 contacts the mesh 15.

  The user allows the mesh 15 to pass through the end of the bullet 14 by continuing to apply the rotational movement of the article to the body 2. This passage through the mesh breaks down the solid burette end, which is cut into flakes and passes through the mesh and then recombines outside and in the mesh, resulting in a uniform A paste will be formed. Once the buret has crossed the mesh and is structurally broken into a paste, this paste is easily applied. The user can thus easily apply this paste to the lips. Obviously, only the end of the product block is structurally destroyed in each application, and the majority of the burette maintains its integrity. The block undergoes structural failure as it reaches the mesh during application.

  In the alternative embodiment shown in FIG. 8, the article 1 comprises two meshes 15 at the distal end of the tube 5, which are in contact with each other and attached to the same support 17. Yes. The two meshes face each other and are parallel to each other.

  In use, the burette passes through the upstream mesh and then immediately passes through the downstream mesh.

  This arrangement provides several advantages. The product block is structurally destroyed to a considerable degree, resulting in a more fluid paste. In addition, the force required to push the portion of the burette through the mesh is reduced, especially when the maximum dimension of the hole 16 in the proximal or upstream mesh is greater than the maximum dimension of the hole 16 in the distal or downstream mesh. The The ratio between these two dimensions is greater than 1 and less than or equal to 100, for example 60.

  These two meshes 15 may be made of the same material or different materials. Further, the two meshes may have holes 16 having different shapes in the same mesh 15 or between the holes 16 of the two meshes. For example, the outline of the first mesh may have a rectangular shape, and the outline of the second mesh may have a generally elliptical shape. Obviously, a large number of meshes may be considered, for example 3, 4, 5 or 6 meshes.

  In the alternative embodiment shown in FIG. 9, the article 1 comprises two meshes 15 that are close to each other and facing each other, but not in contact with each other at this time. The space between these two meshes is adapted to accommodate the burette after it has traversed the first mesh, ie the proximal mesh, and before the passage through the second mesh. The spacing between these two meshes can be maintained, for example, by spacers.

  The advantages of this embodiment are the same as those of the previous embodiment. Thus, a more fluid cosmetic product paste is obtained and the force required by the user to change from a solid burette to a fluid pellet is reduced. As mentioned above, a large number of meshes may be considered, for example 3, 4, 5 or 6 meshes.

  These two meshes 15 may be made of the same material or different materials. Further, the two meshes may have holes 16 having different shapes in the same mesh 15 or between the holes 16 of the two meshes. For example, the outline of the first mesh may have a rectangular shape, and the outline of the second mesh may have a generally elliptical shape.

  Obviously, numerous modifications can be made without departing from the scope of the invention.

  The described embodiment uses a mechanism that pushes the burette. Any other mechanism known to those skilled in the art may be used. For example, a linear slope can extend outside a portion having a helical slope. However, the configuration described with reference to the figure in which the spiral slope is outside the linear slope imparts a reduced pitch to the spiral, and therefore the burette is pushed by the user through the mesh (es). Reduce the force required to push.

  A mechanism that allows the user to apply a sliding force that directly raises the burette may be considered.

  A mechanism may also be envisaged in which the burette is rigidly attached to the body, which is the mesh (es) that descends onto the burette and causes the burette to break down.

  One of the mesh (es) may not be woven, but may be made by machining the plate to create holes, or additional manufacturing techniques (3D printing) may be used.

  The pore size and / or distribution can vary across the face of the mesh.

  The pores can have a larger dimension than another in order to break down the formulation in one direction.

  The mesh may be concave or convex.

  The mesh may be made of plastic, fiber or metal.

  A cosmetic product may be intended for another part of the face. In particular, the cosmetic product may be applied to the entire body. The cosmetic product may be a cosmetic product other than lipstick, for example a care product.

Claims (12)

Cosmetic article (1):
A solid block (14) of a cosmetic product having a fracture index between 0.2 N and 20 N when measured at −20 ° C .;
Said cosmetic article comprising at least one mesh (15), wherein said product is arranged to pass through, has a through-hole (16), the maximum dimension of which is between 50 μm and 450 μm ( 1).   The article (1) according to claim 1, wherein the mesh (15) or at least one of the meshes is arranged such that a minimum distance between the holes (16) is between 100 and 300 µm.   The article (1) according to any one of claims 1-2, wherein at least one of the mesh (15) or the mesh is woven.   The article (1) according to any one of the preceding claims, wherein the mesh (15) or at least one of the meshes comprises a plate having the holes (16).   The article (1) according to any one of the preceding claims, wherein all the holes (16) in the mesh or at least one of the meshes have a stackable profile.   The article (1) according to any one of the preceding claims, wherein the mesh (15) or at least one of the meshes has holes (16) with contours that are not stackable.   The outline of the hole (16) has one of the following shapes: rectangular, pentagonal, hexagonal, octagonal, circular, oval or elliptical. Article (1).   The article (1) according to any one of the preceding claims, comprising at least two meshes (15), one in the direction in which the product passes through the mesh, one behind the other.   The two meshes (15) form upstream and downstream meshes, and the maximum dimension of the holes (16) in the upstream mesh is larger than the maximum dimension of the holes in the downstream mesh, and the ratio between these two dimensions The article (1) according to claim 8, wherein is preferably greater than 1 and less than or equal to 100.   At least one intermediate mesh (15) is further provided between the upstream mesh and the downstream mesh, the maximum dimension of the hole (16) in the intermediate mesh being the maximum dimension of the hole in the upstream mesh and the downstream mesh. Article (1) according to claim 9, wherein the article (1) is between the largest dimension of the hole in the. A body (2) having a helical slope (7);
-In a product distribution tube (5) having at least one linear slope (8), the mesh (15) being located at the distal end of the tube;
-In the piston (6) adapted to slide the product block (14) inside the tube so as to proceed along the helical inclination of the body and the linear inclination of the tube, respectively. 11. Article (1) according to any one of the preceding claims, further comprising the piston attached to two studs (10) which are made.   The article (1) according to any one of claims 1 to 11, wherein the cosmetic product is a cosmetic product for lips.

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