JP7345575B2 - Method for manufacturing cosmetic articles - Google Patents

Description

The present invention relates to the cosmetic field, and more particularly, but not exclusively, to a method for producing cosmetic articles intended for making up or caring for human keratinous substances, in particular the skin. , also relates to a cosmetic article for dispensing, dispensing or applying a cosmetic composition obtained by carrying out the method.

It is known to impregnate porous structures with cosmetic compositions, and it is possible to bring a finger or an applicator into contact with said porous structure in order to deposit the product.

A large number of patent applications deal with cosmetic articles of this type. In particular, WO 2017/016608 (A1) discloses an article comprising a fiber mat made of a non-woven fabric and covered with a mesh on one side.

It is also known that cosmetic articles include a case containing a reservoir of cosmetic composition carrying a screen through which the composition is removed with the fingers or using an applicator. Various screens for the passage of compositions are known from KR101380587 and KR20140147706. WO 2016148371 describes additional parts that are placed on the screen.

KR101380587 is an elastic band made of rubber or silicone that is mounted on a cosmetic product container, with an elastic band arranged around the outer periphery of the lid and towards the bottom to secure it to the container. A reinforcing portion is described having a dispensing lid, a thin peripheral film, and a central downward projection, a diffusion groove, and a straight or cross-shaped slot passing through the lid within the projection. As the cosmetic product is being dispensed by squeezing the dispensing lid using the powder puff, the lid is deformed, thereby opening the slot and dispensing the product through the lid towards the powder puff. make it possible.

KR10-2016-0146510 describes a device for dispensing cosmetic products through a dispensing surface by pressure applied from the outside, which dispensing surface has a convex projection on at least one of its sides. or having at least one boss with a concave recess. The distribution surface may be corrugated in cross-section.

FR3052649 has at least one porous body comprising a first surface, a second surface opposite the first surface, and an interior bounded by the first surface and the second surface. The present invention relates to an applicator for cosmetic products, in particular cleansing or care products, which is at least partially made of wood. At least one of the first surface and the second surface results from at least a partial felting treatment of the porous material. The applicator has a porosity gradient between at least one of the first and second surfaces in one part and the interior of the applicator in the other part.

If desired, for removing, dispensing or applying the cosmetic composition, offering the possibility of easily obtaining an aesthetic effect, a skin contact with the article that is pleasant for the user, and also a good release of the cosmetic composition. There is a need to benefit from a method for manufacturing cosmetic articles.

International Publication No. 2017/016608(A1) KR101380587 KR20140147706 International Publication No. 2016148371 KR10-2016-0146510 FR3052649

It is an object of the present invention to provide a method for further improving cosmetic articles comprising a reservoir containing a cosmetic composition, and also such an article. A further object of the invention is to propose a method for manufacturing a cosmetic article that can be used as an applicator, and to propose such an article.

Method for manufacturing a cosmetic article Accordingly, the subject of the invention according to one of its aspects is an open-cell polymeric foam defining a surface for applying, removing or dispensing a cosmetic composition. 1. A method for manufacturing a cosmetic article comprising: performing a treatment comprising melting at least a portion of the foam.

The present invention provides a method for manufacturing an article that allows treatment of the foam to close some of its cells in order to locally modify the permeability of the foam. Thus, the treatment can prevent or slow down the release of the cosmetic composition, at least in certain locations. This allows, for example, to manipulate the distribution of the composition through the surface of the foam. The invention also makes it possible to create decorations and/or textures on the surface of the foam. In particular, the foam can be marked by processing, such as decoration, in particular on the surface, but without the need for an element such as an ink or film to be transferred onto the foam. The treatment allows an impression to be left on the foam particularly locally by melting part of the foam. This allows certain shapes to be textured and carved onto the foam, making it possible to modify its properties, in particular its permeability to the composition.

The method according to the invention makes it possible to precisely locate one or more regions of the foam that are intended to be treated by melting.

The expression "melting at least a portion of the foam" means that, as a result of the treatment carried out during the method according to the invention, one or more regions of the foam are free of fluids after treatment and before being solidified again. It should be understood to mean transition to a state, in particular a liquid state. The appearance of the foam is modified so that depending on the shape produced by the processing, all or some of its mechanical properties may be modified. Preferably, only part of the foam is affected by melting, allowing the treatment to treat only one or more areas of the foam. The treatment may or may not result in the production of relief.

Advantageously, the treatment is not a hot rolling treatment.

The expression "not a hot rolling process" should be understood to exclude any type of process that uses rollers or cylinders that are rotationally driven and melt at least a portion of the foam, such as thermal calendering. . The advantage of the processing is that it is carried out without the use of rollers, which makes it easier to customize the pattern produced, if desired, and that the foam can be processed under certain conditions, for example under tension or It can be mounted on a holder and processed, which is not possible with a rolling process. Applying tension to the foam during processing can help produce accurate patterns, especially if the foam exhibits some degree of elasticity.

In a variant, the treatment can be carried out using at least one roller.

The expression "processing with at least one roller", which may also be referred to as processing with at least one cylinder, is understood to mean processing in which at least a portion of the foam is brought into contact with said at least one roller. be understood. Contacting the foam with the at least one roller may be performed with or without pressure. Said at least one roller may have a pattern in relief. In a variant, said at least one roller has no pattern in relief. If the treatment is carried out with two or more rollers, for example with two rollers, only one of the rollers may have a relief. In variants, the two rollers can have identical, complementary or different patterns in relief. Processing with at least one roller can be selected from mechanical finishing techniques. These are different from printing techniques.

The treatment with at least one roller can be, inter alia, calendering. Calendering is understood to mean passing at least a portion of the foam between two or more heated rollers, which are calender rollers. At least one of the rollers may be etched with a pattern corresponding to the relief, which may or may not be inverted, making it possible to generate this pattern in relief on the foam.

Preferably, the treatment comprises applying heat by conduction and/or by radiation and/or by ultrasound or radio frequency energy.

Advantageously, the treatment is carried out by contacting the foam, in particular at least one surface of the foam, with a treatment tool. In a variant, the treatment can be carried out using a treatment tool without contacting the foam.

In one embodiment, the treatment includes transfer-free hot marking, in particular using a heated pad and/or a heated iron.

The expression "hot marking without transfer" means that the foam is coated without the use of a transfer film with a pad or It is understood to mean contact with or proximity to a hot marking tool such as an iron. In this case, the processing tool includes a marking tool with marking equipment.

The treatment may also include applying ultrasound using a sonotrode, in particular a sonotrode with relief or a flat sonotrode, and an anvil, in particular an anvil with relief or a flat anvil. In this case, the processing tool may have a sonotrode connected to an ultrasonic generator and an anvil, the sonotrode being disposed on one side of the foam during processing and the anvil being attached to the foam. Advantageously, it is arranged on the other side of the .

The method may include applying pressure to the foam, in particular embossing it using an embossing tool. Such application of pressure on the foam may allow the foam or a portion thereof to flatten. producing reliefs on the foam and/or reducing the thickness of the foam and/or foaming, in particular during processing, before or after processing, in particular to modify its permeability; The pressure application may be performed to compress the body.

Other treatments may be carried out to effect melting, in particular laser treatment or induction treatment, of at least a portion of the foam.

The treatment may be carried out using a treatment tool that is brought into contact with or in close proximity to the foam substantially perpendicular to, or even perpendicular to, the surface of the foam. . This tool, unlike a roller, is not rotationally driven by itself.

The method may include cutting the foam flat. This step is preferably performed before processing. In a variant, the step is performed later. The invention may in this case make it possible to proceed from a flat foam and obtain a 3D foam with a relief generated by the process.

In a variant, the method may include, for example, cutting the foam in 3D before said treatment. 3D expression cutting is to be understood as meaning a cutting which not only defines the contour of the foam seen from above, but also molds its relief inside said contour.

The maximum thickness of the foam is preferably between 0.4 mm and 10 mm, in particular equal to about 1 mm. This thickness can be measured before the treatment according to the invention is carried out. In a variant, the thickness can be measured after processing. The treatment, particularly in the case of the application of pressure, may make it possible to reduce the thickness of the foam by more than one factor. A curved relief on the basis of the cylinder can be envisaged.

The method may include flocking the foam. This flocking step may be performed before and/or after the treatment is carried out.

The method may include creating at least one hole in the foam. This step of creating holes may be performed before and/or after the treatment is performed. The holes may allow creating one or more selective distribution areas for the cosmetic composition through the foam.

In one particular embodiment, the foam is not tensioned while the method is being performed.

In a variant, the invention provides that prior to and/or during said treatment the foam is tensioned along at least one stretching axis, in particular the tension is between 3% and 10%. may include the step of causing stretching. Advantageously, this tension is applied in a plane defined by the surface of the foam. This may make it possible to obtain a more visible aesthetic effect on the treated foam if the tension is released after treatment. The tension applied during processing can be greater than the tension applied during use of the article, apart from the tension applied by the user when ejecting the composition through the foam, for example.

Since the foam has a contour, in particular a circular contour, at its outer edge, the tension can be applied particularly uniformly over the outer edge of the foam.

The method may include securing the foam to a holder of the article. Such a holder may be a frame. Fixing the foam to the frame before processing may allow better control over the location of said at least part of the foam being melted. In particular, the pattern or patterns obtained by the processing can be centered more easily. If the foam is fixed to the frame of the cosmetic article before the treatment is carried out, the treatment tool may be used to fix the foam against the frame, for example by interpolating the shape between the sonotrode and the anvil around the frame. The foam may be configured to ensure precise manipulation of the location of the at least part of the foam that is placed and thus melted during processing. The frame may have various shapes, for example circular or polygonal, with or without rotational symmetry. The frame may be circular or form a ring.

The foam can be fixed to the frame without tension, and the tension can be applied only during processing, in particular using processing tools.

The foam can be fixed to the frame simultaneously with processing. The foam can be secured to the frame by bonding, welding, or any other securing means. A tool that causes local melting of the foam, in particular forming a pattern on the foam, may also ensure that the foam is fixed to the frame by local melting of the material. Thus, a single operation makes it possible to obtain both fixation of the foam and its processing.

The invention may include the step of securing the foam to the textile, in particular by ultrasonic welding, to form a two-layer screen.

Cosmetic Articles A further subject of the invention, according to another of its aspects, comprises, in combination with the above, an open cell polymeric foam defining a surface for applying, removing or dispensing a cosmetic composition. A cosmetic article, which article is obtained using the method described above.

In one embodiment, said surface has undergone said treatment.

In a variant, or in addition, the reverse side of the front surface has undergone the treatment.

The foam may have, on the treated surface, a relief resulting from the treatment, in particular a relief that is 0.5 mm or more deep or forms a protrusion of 0.5 mm or more.

Open cell polymer foams include polyurethane, butadiene rubber (BR), styrene butadiene rubber (SBR), natural rubber (NR), wetted urethane, dry urethane, polyether, polyester, polyvinyl chloride, polyolefin, etc. selected from the group consisting of polyethylene, ethylene vinyl acetate (EVA), latex, silicone, styrene-isoprene-styrene (SIS), polyvinyl alcohol (PVA), silicone elastomer, nitrile rubber, butyl rubber, and neoprene thermoplastic elastomer foam. It is preferable that

In general, polymer foams consist of a three-dimensional structure formed by a solid skeleton made of a polymer and having solid walls and/or solid ridges surrounding the cells in a spatially random orientation. It is understood that it is a cellular material with

In polymer foams, porosity, which is all of the void space created by pores or air cells, generally exceeds 70% of the total volume of the foam.

It is understood that "open cell polymer foam" means that, at least before treatment according to the present method of the invention, the majority of the cells of this material open outward into adjacent cells. In this case, only the ridges surround the cells that form the solid skeleton of the foam. There are no solid walls. The shape of the bubble can be spherical or polyhedral. There may be a small number of closed cells, ie less than 50% of the total number of cells in the foam, in particular less than 20% or even 10% of the total number of cells in the foam.

The number of cells per unit length, called PPI (Pores Per Inch), makes it possible to characterize polymer foams. PPI corresponds to the number of pores or bubbles separated by a length of 1 inch (2.54 cm).

The structure of the foam can be modified by processing. In particular, the number of bubbles per unit length (PPI) can be modified after processing. The porosity of the foam can be reduced, at least locally, to reduce the permeability of the foam without necessarily closing the foam or locally closing the cells of the foam.

The properties of the foam may have been modified by processing. The foam may be locally impermeable, for example, or may have reduced permeability in one or more regions of the foam that have undergone treatment, such as the central region.

The porosity of the foam can be intentionally modified by processing, in particular towards lower porosity. The foam can remain permeable to cosmetic compositions. Porosity may not be uniform within the surface. The treated area of the foam is the central area and may not cover the entire area of the foam.

The foam may have at least one pattern resulting from processing. The foam may have at least one relief resulting from the treatment, in particular a relief that is 0.5 mm or more deep or forms a protrusion of 0.5 mm or more. If present, the relief can assume multiple pattern shapes. Optionally, the pattern in relief can be geometric, symmetrical, or irregular.

The foam may be flocked over at least a portion of its surface for applying, dispensing or dispensing the cosmetic composition.

The article may have a holder, in particular a frame, which is fixed or movable within the article, in particular through which the composition is passed by the foam being pressed against the composition. As can be seen, the foam is held by the holder above the composition reservoir. The foam can then act as a screen.

The foam may be fixed, in particular by bonding, to an underlying porous structure, in particular a sponge optionally impregnated with a cosmetic composition.

The article may have a case having a body having a housing containing a cosmetic composition, the foam disposed over the cosmetic composition, and the case cooperating with the body. It is preferable to have a lid portion designed to.

In a variant, the article forms a cosmetic composition applicator. In this case, the article may form a pad or powder puff. The article may then be washable. In a variant, the applicator is fixed to the grip.

Cosmetic compositions can be liquids or powders.

The invention can be better understood by reading the following detailed description of non-limiting examples thereof and by studying the accompanying drawings.

1 is a schematic perspective view of an example of a case for an article according to the invention; FIG. 2 is a schematic illustration of the application, dispensing, or dispensing surface of another example of a foam article according to the invention; FIG. 2 is a schematic illustration of the application, dispensing, or dispensing surface of another example of a foam article according to the invention; FIG. 1 is a schematic cross-sectional view of a portion of an example article before treatment according to the method of the invention; FIG. 1 is a cross-sectional partial schematic diagram illustrating the implementation of the method according to the invention in an example article; FIG. 1 is a schematic cross-sectional view of another embodiment of the method on a foam intended for manufacturing a cosmetic article; FIG. 1 is a schematic cross-sectional view of a foam after treatment according to the method of the invention; FIG. 1 is a partially schematic perspective view of an example of a tool for carrying out the method according to the invention; FIG. Figure 3 is a partially schematic perspective view of another example of a tool for carrying out the method according to the invention, placed in close proximity to the foam before the treatment is carried out; 10 is a diagram of the implementation of the processing steps of the method according to the invention using the tool of FIG. 9 on the foam of FIG. 9; FIG. 1 is a cross-sectional partial schematic view of another example of a cosmetic article according to the invention; FIG. 1 is a schematic front view of another example of a cosmetic article according to the invention; FIG. 1 is a schematic front view of another example of a cosmetic article according to the invention; FIG. 1 is a schematic cross-sectional view of a foam after treatment according to the method of the invention; FIG.

In the remainder of the description, elements that are identical or have the same function are provided with the same reference symbols. For the sake of brevity, the elements are not described in each of the figures, and only differences between the illustrated embodiments are described.

FIG. 1 shows a cosmetic article 1 according to the invention having a case 2 with a body 3. FIG. The case 2 also has a lid part 5, which in this example is hingedly attached to the main body 3. The lid may be fixed to the case in some other way, for example by screws.

Furthermore, the case 2 houses an applicator holder 6 that is hingedly attached to the main body 3 around a rotation axis perpendicular to the rotation axis of the hinge between the lid part 5 and the main body 3 in this example. The applicator is not shown in this figure. A dish 4 is received within the housing 8 of the body 3 of the case 2. Dish portion 4 houses a reservoir of cosmetic composition.

Defines a surface 17 for applying, dispensing or dispensing the composition, which in this example has a substantially square shape with rounded edges and corners, forming the visible surface of the foam 15 The reservoir is topped by a foam 15. Foam 15 is an open cell polymer foam made of polyurethane foam in this example. At least a portion of the foam 15, in this example at least a portion of the surface 17, has been treated, at least at the surface, by a process other than a hot rolling process, which involves melting at least a portion of the foam 15. Specifically, in this example, the processing includes melting the walls of at least some of the cells of foam 15.

In the illustrated example, a part of the surface 17 of the foam is heated, in particular by hot ironing or by hot marking without transfer, in order to form by melting a pattern 20 in the form of the letter A in this example. It is treated using a pad made of According to the invention, the pattern is properly centered on the surface 17. In this case, heat is applied to the foam 15 by conduction.

In this example, the foam 15 is intended to allow withdrawal of the cosmetic composition contained in the underlying reservoir. Foam 15 is permeable to the composition, allowing the composition to pass through the open cells that create the foam. The treatment can modify, in particular reduce, the permeability of the foam 15 in the area of the pattern 20.

Most of the cosmetic composition is contained within the reservoir, in particular completely contained therein, for example in liquid form.

Where the processing includes applying heat by irradiation and/or by ultrasound or radio frequency energy, or where the processing includes applying ultrasound using a sonotrode, or laser processing, or hot rolling. This does not constitute a departure from the scope of the invention if the process is carried out by induction or some other suitable process other than by using a process. If it is the back side of the front side 17 instead of or in addition to the front side 17 that undergoes treatment, this also does not represent a departure from the scope of the invention. The treatment may also affect all or part of the foam that is located between the surface 17 and the back side of the surface 17.

Figure 2 shows that as is, a sonotrode is used to form a central pattern 20 in the form of a ring in this example by local melting of the foam 15, which is achieved by applying heat with ultrasonic energy. It shows the surface 17 of the foam 15 attached and fixed to the circular frame 21 to be treated.

In the example of Figure 3, the surface 17 of the foam 15 has been treated by applying ultrasound to form a geometric pattern 20 in the form of target-like concentric circles centered at the center point O of the surface. . Each circle of the pattern 20 includes foam, at least on the surface, to form the pattern 20 and possibly modify the properties of the surface, e.g. to reduce the permeability of the foam 15 in these areas. Forming 15 local melting regions.

Since the process is preferably not carried out using rollers, it is easier for the pattern 20 to be centered within the article 1, as is the case in FIG.

FIG. 4 shows a foam 15 extending perpendicularly to the axis is fixed. This figure also shows the back side 18 of the foam 15, which extends to the back side opposite the front side 17. In this example, the foam 15 is stretched onto the frame 21 at a stretch of approximately 3% along at least one stretch axis around the entire outer edge of the foam 15, which in this example is circular. There is.

Figure 5 shows a hot marking tool O perpendicular to and close to the surface 17, along the arrow parallel to the axis X, in order to carry out the process. The tool O has a surface with elements R in relief, in particular for producing a pattern on the surface 17 of the foam 15.

In the example of Figure 5, the foam 15 is attached to a frame 21 of a cosmetic article, which is used during the manufacture of the article before the frame is fitted into a case similar to that of Figure 1, for example. This is step 1. Therefore, the manufacture of article 1 begins before the processing is carried out. It is possible to add a temporary holder E under the foam to perform hot marking, as shown in dotted lines in this figure.

Foam 15 can be treated before article 1 is manufactured. For example, as shown in FIG. 6, a 2D sheet 12, eg, cut flat, of foam 15 is prepared before the foam 15 is cut for use in an article according to the invention. is processed as in the example. The thickness of the foam 15 before treatment is approximately 1 mm in this example. During processing, the foam can rest on the holder.

Figure 7 shows that the treatment carried out on the foam 15, in particular by the pressure applied to the foam before or after the treatment, has in this example created an indentation on the side of the front side 17 and on the back side. It is shown that it may include the formation of a relief 25 on the foam 15, protruding onto 18.

In a variant, as shown in FIG. 14, the relief 25 can be present only on the surface 17 and within the thickness of the foam, without affecting the back side 18 of the foam 15.

FIG. 8 shows an example of a pad for a hot marking tool O with an A-shaped pattern that allows an A-shaped pattern 20 to be obtained on the surface 17 of the foam 15. The diameter and shape of the surface S of the pad that will be in contact with the foam 15 during processing may be similar to the diameter and shape of the foam of the finished cosmetic article 1. The treatment may be carried out without contacting the foam, for example using a laser, without departing from the scope of the invention.

9 and 10 show the implementation of the process using the sonotrode D on the foam 15 attached to the frame 21. In FIG. 9, the processing tool abuts the opposite end of the frame 21 from the end of the frame 21 that is fixed to the foam 15 to be kept at a non-zero distance from the back side 18 of the foam 15. , including a sonotrode D connected to an ultrasonic generator (not shown for clarity of drawing) extending from back surface 18. On the opposite side, the tool also has an anvil E, which is arranged on the side of the surface 17 of the foam 15 and in contact with said surface. The anvil E has an upper peripheral edge around the frame 21 supporting the foam 15, which contacts and completely surrounds the sonotrode D, corresponding to the complementary shape between the anvil E and the sonotrode D. Be prepared. The sonotrode D is therefore arranged centrally on the frame 21, thereby allowing precise manipulation of the location of one or more zones of the foam 15 to be subsequently processed. In order to melt at least a portion of the foam 15, the anvil E is approached to tension the foam 15 until the back side 18 contacts the sonotrode D, as shown in FIG. Heat is applied by the ultrasound energy and the application of ultrasound causes melting of at least a portion of the foam, particularly the cells of the foam, in a desired pattern.

In Figure 1, the foam 15 is in contact with the cosmetic composition, at least after the first use.

In the example of Figure 11, the foam 15 is fixed by bonding to an underlying structure 35, which in this example is made of a block of sponge or cellular porous material containing the cosmetic composition C at least during use. In this example, the surface 17 of the foam has no relief and the processing involves melting at least a portion of the foam 15 that does not produce relief.

The invention is not limited to cosmetic articles 1 that come into contact with the composition in a reservoir.

In particular, the variant shown in Figures 12 and 13 uses a foam 15 covering, for example, a (non-visible) sponge to form a cosmetic composition applicator that is not impregnated with composition. 1 shows a cosmetic article 1 comprising: This applicator is used to remove the composition from a surface on which it is packed or from a block of product, and to apply it while it is held in the hand, or in a modified form. , used to mix or dispense compositions that are applied in some other manner.

The applicator of Figure 12 is entirely flexible. The applicator of Figure 13 has a distal end 28 covered with foam 15 and secured to a rigid or semi-rigid grip 29 which in this example forms a handle.

The foam 15 may or may not have holes, regardless of the air bubbles.

1 Cosmetic articles
2 cases
3 Main body
4 Dish section
5 Lid
6 Applicator holder
8 Housing
12 2D sheets
15 Foam
16 Outer edge
17 Surface
18 Back side
20 patterns, center pattern, geometric pattern, A-shaped pattern
21 circular frame
25 Relief
28 End part
29 Rigid grip, semi-rigid grip
35 Lower layer structure, lower layer porous structure
C Cosmetic composition
D sonotrode
E Temporary holder, anvil
S surface
X-axis
O center point, hot marking tool

Claims (15)

A method for manufacturing a cosmetic article (1) comprising an open cell polymeric foam (15) defining a surface (17) for applying, dispensing or dispensing a cosmetic composition (C). carrying out a treatment comprising melting at least a portion of the open cell polymer foam (15) , the treated area of the open cell polymer foam (15) comprising the step of: melting at least a portion of the open cell polymer foam (15); , which is a central region that does not target ,methods. 2. The method of claim 1, wherein the processing includes applying heat with at least one of conduction, radiation, and ultrasonic energy or radio frequency energy. 3. A method according to claim 1 or 2, wherein the processing comprises hot marking without transfer . 4. A method according to any one of claims 1 to 3, wherein the treatment comprises applying ultrasound using a sonotrode with relief or a flat sonotrode and an anvil with relief or a flat anvil. 5. A method according to any one of claims 1 to 4, wherein the treatment is not a hot rolling treatment. 6. A method according to any one of claims 1 to 5, comprising the step of cutting the open cell polymer foam (15) flat. 7. A method according to any preceding claim, comprising securing the open cell polymer foam to a holder of the cosmetic article. A cosmetic article according to any of claims 1 to 7, comprising an open cell polymeric foam (15) defining a surface (17) for applying, dispensing or dispensing a cosmetic composition (C). A cosmetic article obtained using the method according to item 1. 9. Article according to claim 8, wherein at least one of the front side (17) and the back side (18) of the front side (17) has undergone the treatment. the open cell polymer foam (15) has a relief (25) resulting from the treatment , and /or the structure of the open cell polymer foam (15) has been modified by the treatment; and/or said open cell polymer foam (15) is locally impermeable or has reduced permeability in one or more zones of said open cell polymer foam (15) that have undergone said treatment; 10. Article according to claim 8 or 9, wherein: and/or the open cell polymer foam (15) has on its treated surface at least one pattern resulting from the treatment. The open cell polymer foam (15) is made of polyurethane, butadiene rubber (BR), styrene butadiene rubber (SBR), natural rubber (NR), hydrated urethane, dry urethane, polyether, polyester, polyvinyl chloride, polyolefin, polyurethane , etc. selected from the group consisting of polyethylene, ethylene vinyl acetate (EVA), latex, silicone, styrene-isoprene-styrene (SIS), polyvinyl alcohol (PVA), silicone elastomer, nitrile rubber, butyl rubber, and neoprene thermoplastic elastomer foam. 11. An article according to any one of claims 8 to 10. the open cell polymer foam ( 15 12. Article according to any one of claims 8 to 11, wherein: ) is held by the holder above the reservoir of the cosmetic composition (C). 13. Article according to any one of claims 8 to 12, wherein the open cell polymer foam (15) is fixed to an underlying porous structure (35 ) . 9. A case (2) comprising a body (3) with a housing containing said cosmetic composition, said open cell polymeric foam (15) being disposed above said cosmetic composition. The article described in any one of 13 to 13. 15. An article according to any one of claims 8 to 14, forming a cosmetic composition applicator.

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