ES2294249T3 - APPLICATOR OF SPECIALLY COSMETIC PRODUCT AND MANUFACTURING METHOD OF SUCH APPLICATOR. - Google Patents

Abstract

The applicator has a head (1) consisting of a support (3) with bristles (2) made from polymer fibres, at least some of which have curved portions with a radius of curvature of between 2 and 40 mm, and preferably between 3 and 10 mm. The curved portions of the bristles are located in a random arrangement relative to one another. The applicator has a head (1) consisting of a support (3) with bristles (2) made from polymer fibres, at least some of which have curved portions with a radius of curvature of between 2 and 40 mm, and preferably between 3 and 10 mm. The curved portions of the bristles are located in a random arrangement relative to one another. The bristles have a preferably thickness of 0.010 to 0.025 mm, and the applicator head can have various cross-sectional shapes, e.g. circular or polygonal, especially square or triangular. The support is of twisted wire strands and can be straight or curved.

Description

Product applicator especially cosmetic and manufacturing method of such an applicator.

The invention relates to a device for the application of a product, mainly cosmetic, in particular of makeup and / or treatment. The product can be applied on the skin, on the nails or on the keratin fibers, mainly hair, eyelashes or eyebrows.

In the field of makeup, researchers of cosmetics do not stop looking for new effects.

This applies in particular in the field of masks, where research is done to obtain makeups that can be loaders, natural, coating, elongation or that result from a mixture between these different characteristics of base.

The investigation of new devices of application can also be guided by the appearance of new makeup compositions that, because of their rheology, are not They can be applied with conventional applicators.

Thus, patent literature provides patents describing devices, whose purpose is to produce new makeup effects or allow the application of compositions that They have particular rheologies.

As examples, they are described in these patent devices that distinguish ones in relation to others by the density and / or the form of its application elements (usually fibers), by its profile, longitudinal and / or transverse, or by the nature of the material that constitutes the support and / or the application elements, for the treatment to which it can be submitted all or part of the application device or by any another element of the conditioning and application set, whose application device is only a constitutive part (for example, the scraper).

Thus, more specifically, the request for FR-A-2 668 905 describes a procedure for obtaining a mask brush consisting in heating, after braiding the brush and cutting according to the desired profile, the tip of the fibers to melt them and thus create at the tip of the fibers, small dilations in the form of balls, resulting from the retraction of polymeric matter. After such treatment, the fibers remain noticeably rectilinear

According to another example, the patent US-A-5 161 554 describes a brush mask of the type of braided brush and whose fibers are of variable section according to its longitudinal axis. The fibers may be Zigzag or wavy. It results fibers that have an alternation of curves in one direction, then in the other sense, with an evolutionary radius of curvature between a maximum radius and a minimum radius at the level of each investment of curvature.

In this document, a certain number is described of operations, mainly during the extrusion of the fibers or after extrusion, to confer the desired profile.

After treatment, in a conventional manner, the fibers are arranged in the form of a layer introduced between two U-wire rods. The latter are braided to then one in relation to the other, to configure the fibers in the form of a helical arrangement of several turns.

From experience, it is perceived that:

i)

when deformations are generated during the fiber extrusion process, due to the own extrusion process, necessarily have a radius of curvature minimum important; Y

ii)

when the deformations result from a treatment after extrusion, they also have a radius minimum important curvature, because of which, its manipulation automatic to put them in the form of a layer to be arranged between two U-wire rods and with a view to braiding the two rods of wire would be very problematic.

It is also known to make brushes mask by molding. The mold is designed in such a way that the free end of the application elements that, in a way In general, they are rectilinear, it is finished by a portion in the form of fork, or hook-shaped. Due to obtaining these extreme portions by molding, their relative orientations are predetermined The results in terms of makeup are disappointing In addition, it is necessary to have a mold for each type of makeup sought.

It is also known for mask brushes, sharpen or abrasion modify the free ends of the fibers to separate them into multiple rods. Of such treatment purely mechanical portions of fibers may be curved. These curved portions are, however, strictly located at the ends of the fibers. In addition, the radios of curvature obtained descend hard below 50 mm.

       \ newpage
    

With such radii of curvature, the effects on Makeup result terms are barely noticeable.

Thus, one of the objects of the present application is to make an application device, in particular for a makeup and / or treatment product, which resolves total or partially the problems described with reference to known devices

In particular, an object of the invention it consists of making a device for applying a product of makeup and / or treatment, which is a solution alternative with a view to obtaining certain effects of makeup, offering the possibility of getting makeup different from the makeups obtained with the devices conventional.

Another object of the invention is to perform An economical device to perform.

Still another object of the invention consists in perform a manufacturing procedure for an applicator, in particular for a treatment and / or makeup product and that It is simple and economical to perform in an industrial tool.

Other objects will appear in the description detailed that follows.

According to the invention, these objects are reached performing a device for the application of a product, mainly makeup and / or treatment, which includes a arrangement of polymeric fibers having at least one end free, said fibers being fixedly mounted on a support and presenting, at least some of them, at least a portion curved that:

i)

be extends continuously from the support to one (or its) end Free and

ii)

is radius of average curvature less than 45 mm, being oriented said curved portions relative to each other of random way.

By "continuously" is understood without reversal of the direction of curvature between the support and the end free.

Preferably, such curvature is obtained subjecting all or part of the application device to a moderate heating, that is, at a temperature higher than glass transition temperature of the polymer forming said fibers that you want to bend again, and below the temperature of fusion of said polymer in the case of a polymer semi-crystalline

The heating duration is set to function of the material, the diameter of the fibers, in order to obtain the desired curvature, and this without causing retraction of the subject matter, as described in the patent application FR-A-2 668 905 mentioned previously, to generate a sensible reduction of the fibers and to modify the cross section, in particular, in the tip.

Above the limit value of approximately 45 mm, the effects, mainly in terms of effects of makeup, may be considered insufficient, depending on mainly of the rheology of the product to apply.

The important curvature of the fibers allows, even in the hypothesis that the density of the fibers, in Particular by spire in the case of a mask brush type braided mask, be important, reduce so substantial the spaces between two successive turns, and create a jumble effect, thus preventing makeup from performing by packages.

Actually, playing on the radius of curvature of the fibers, in combination with other parameters such as fiber density, its diameter, the shape of its section transverse, or the shape of the brush, it is possible to pass from a makeup of the most natural to a makeup of the most load and / or obtain more or less elongation and / or curvature.

Because of this important curvature, it is possible, In addition, in the case of an applicator intended for makeup, obtain new makeups, in relation to makeups obtained with conventional applicators, and this with makeup compositions identical.

In the case of a nail polish applicator or of a nail treatment composition, shaped in shape of a brush, the curvature of the fibers helps to space the some in relation to the others, thus increasing the amount of product that can be retained between the fibers of the brush. This way, the autonomy of the brush is improved.

In addition, due to this particular configuration of the strand (s) of fibers of such a brush, marbled effects on the nail can be obtained.

Preferably, said fibers are of curvature substantially constant from the support to the free end correspondent. "Sensibly constant" means a variation of the radius of curvature at most 15% around a average value, and preferably, at most 10% around said middle value.

According to the invention, the application device it can be generally configured in the form of an arrangement of hairs that are substantially parallel to each other and that extend, like a toothbrush, perpendicular to the axis of said support. Such applicators are generally intended to be used in combination with a conditioned product in the form of a solid pill, which should humidify before use.

The average radius of curvature of the portions curved is preferably between 2 mm and 40 mm. With Preference is between 2 and 30 mm. With preference still, it is less than 20 mm and greater than 3 mm. With preference still, the radius of curvature is between 3 mm and 10 mm

Advantageously, said fibers are made of a thermoplastic material, mainly of polyamide or of a thermoplastic elastomer. The thermoplastic material can be amorphous 100% or semi crystalline.

For example titles, you can cite 6 polyamides, such as those sold under the brand Tynex®

The diameter of the fibers can be between 6/100 mm and 35/100 mm and preferably between  10/100 mm and 25/100 mm.

According to a particular embodiment, the application device comprises fibers or portions of fibers noticeably rectilinear.

Alternatively, it comprises a first group of curved portions that have a first radius of average curvature and a second group of curved portions that have a second radius of medium curvature, different from the first.

The different radii of curvature of the first and of the second groups may result from the use of first and second types of fibers formed of different materials, which they have mainly glass transition temperatures different.

However, such differences can be obtained also with fibers formed of identical materials. In this Reference case, there are several possibilities:

i)

the term treatment conditions to which the curved portions of the two groups are different, in terms of temperature or duration of heating; or

ii)

the curved portions of the first group are fiber portions, whose diameter and / or shape are different from the diameter and / or shape of fibers, from which the curved portions of the second come group.

Thus, they can be used, alone or in mixtures, solid or hollow hairs, of circular, triangular, elongated section, C-shaped, or four-leaf clover (four lobes). Other forms can still be used.

The different groups of curved portions they can participate, when they mix with each other, in the obtaining results of particular application, especially when It's about makeup. When they are separated from each other others, can also be used for different areas of the region to be treated

Advantageously, the support is constituted by a braided soul, formed from two rods, mainly wire, braided one in relation to the other, being the fibers held fixedly between the two braided rods and extending radially in relation to the braided soul, being the device intended for product application on the Keratin fibers, mainly eyelashes and eyebrows.

With an application device according to this mode of preferred embodiment, each fiber, maintained substantially in its medium by the braided soul, comprises two portions that are extend each of them from the support to a free end correspondent. In such an applicator may be present:

i)

fibers, whose two portions are curved, with identical or different curvatures;

ii)

fibers, one of whose portions is curved and whose other portion is rectilinear; and eventually

iii)

in mixing with fibers of one and / or the other of categories i) and ii) of fibers, whose two portions are rectilinear.

Preferably, the fibers are arranged according to a helical arrangement, the number of fibers per turn between 5 and 80, and preferably between 10 and 45. The helical fiber organization can be more or less noticeable, even totally imperceptible, to the surface of the applicator, depending on the degree of curvature of the fibers.

The cross section of the device application can be circular or polygonal, mainly triangular, square or pentagonal. They can even be considered other forms.

The braided soul can be rectilinear or curved

The braided soul has a plurality of spirals that can rise from the left to the right, when the brush is facing upright. In this case, The brush is rated "left."

Advantageously, the braided soul has a plurality of turns that rise from the right to the left when you see the face brush in an upright position. In this case, The brush is rated "right."

In the case of an applicator of several groups of curved portions of different curvatures, the latter can be mixed with each other on the support.

Alternatively, the different groups of curved portions can be implanted in places other than support.

Thus, the first and second portion groups curved can be displaced along a longitudinal axis of the support.

Alternatively, they are angularly displaced Around the braided soul.

According to another aspect of the invention, it is carried out also a method of manufacturing a device for the application of a product, mainly makeup and / or treatment, which comprises the following stages:

i)

stably dispose of a plurality of polymeric fibers on a support, and

ii)

after fiber fixation to the support, expose at least a part of the fibers to a temperature above the glass transition temperature of polymeric material that constitutes them, during a period of time such:

to)

that said fibers have at least a curved portion; and that

b)

the length of said fibers is substantially unchanged.

In the case of a material semi-crystalline, the fibers are heated to a temperature significantly lower than the melting temperature of material that constitutes them.

The heating of said fibers can be carry out by convection, mainly by immersion in a liquid hot, or by contacting hot air or by radiation, mainly infrared.

Preferably, the heating is carried out by immersion of the fibers in hot water at approximately 100 ° C. Such temperature is considered satisfactory for polyamide fibers. 6, whose glass transition temperature is between 50 ° C and 60 ° C, and whose melting temperature is of the order of 185 ° C.

The fibers may be impregnated in said liquid for the period of time ranging from 4 to 25 seconds, with preference of 7 to 15 seconds.

For purely indicative purposes, for a brush braided comprising polyamide fibers 6, whose diameter is 13/100 mm, maximum curvature is obtained after 8 seconds of heating in water at 100 ° C.

Still according to another aspect, the invention is refers to a set of conditioning and application of a product, mainly cosmetic, comprising:

to)

a deposit containing the product to be applied; Y

b)

a application device according to the invention.

The conditioning and application set can also comprise a drainer intended to be traversed by the application device, at least during its removal from container, in order to dose the amount of product Presents on or between the fibers.

The invention consists, set aside the provisions set forth above, in a number of other provisions that will be explained below, on the subject of non-limiting embodiments described with reference to the attached figures, among which:

Figure 1 represents an applicator of type of braided brush, in accordance with the prior art invention.

Figure 2 schematically represents a application device according to a first embodiment of the invention.

       \ newpage
    

Figures 3A-3C illustrate so schematic different cross sections of a device application according to figure 2.

Figures 4A - 4F illustrate different fiber cross sections that can be used in a application device according to the invention.

Figure 5 schematically represents a application device according to a second mode of embodiment of the invention.

Figure 6 schematically represents a application device according to a third embodiment of the invention.

Figure 7 schematically represents a application device according to a fourth embodiment of the invention.

Figure 8 schematically represents a application device according to a fifth embodiment of the invention.

Figure 9 schematically represents a application device according to a sixth embodiment of the invention.

Figure 10 schematically represents a conditioning set and application that uses a application device according to the invention; Y

Figure 11 represents schematically the different stages of the manufacturing process according to a embodiment of the invention.

Figure 1 illustrates a conventional brush 50 brush type, as commonly used for the Eyelashes or eyebrows makeup.

The brush 50 comprises a braided core 51 obtained from a U-bent wire and between whose arms,  prior to the braiding movement, a strand of hairs 52. In response to the braiding movement, hairs 52 are taken to a helical configuration formed from a succession of more or less separate turns. The hairs 52 extend radially to the support and are substantially rectilinear or at least they have an important radius of curvature (greater than 60 mm).

A hairless portion of the braided soul 51 is mounted on a rod 53. The opposite end of the rod 53 to brush 50 is generally connected to an element (not represented) that at the same time forms a gripping organ for the brush 50, and sealing element for the container to which it is Associated the brush.

Figure 2 depicts a brush 1 of the type that is shown in figure 1, but according to the invention.

According to this embodiment and the same such as brush 50 of figure 1, brush 1 is of the type of "left brush", raising the turns of the braided soul 3 from left to right when brush 1 is seen from face upright.

In the same way as for the brush of the Figure 1, a hairless part of the braided soul 3 is fixed in the end of a rod 4. The braided soul 3 of the brush is rectilinear and extends along an X axis that corresponds to the axis of the rod 4.

The hairs 2 of the brush, unlike the hairs 52 of the brush of the preceding figure, are curved on full length

Its average curvature, measured with the help of a Profile projector with an extension of 10, is of the order of 3 to 10 mm The profile projector used is a profile projector sold under the commercial reference H562 by the Company HAUSER®.

Although the curvatures of the fibers are of random orientation with respect to each other, it has observed that, in a preferred embodiment, the heat treatment, to which the fibers are subjected, causes a curvature of the latter, which is substantially constant from the support up to its free end (s).

Figure 11, to which reference is now made, schematically illustrates the main stages of manufacturing of a brush 1 of the type shown in Figure 2.

In a first stage, 200, the hairs are introduced, in the form of a layer, between the two rods of wire, which are braided then where does a 201 cylindrical brush approximately 15 mm in diameter.

The brush 201 is braided next (step 202) to confer an own frustoconical profile for the application searched. The brush 203 resulting therefrom is a diameter, at its widest end, of approximately 7 to 8 mm. The Brush hairs 203 are substantially rectilinear.

In the next step 204, the brush 203 is immersed for approximately 8 seconds in water at 100 ° C.

This results in a conformation of the material polymeric, whose conformation causes a sensitive curvature of the fibers, whose average radius is of the order of 3 to 10 mm.

Brush 1, which results from the procedure that It has just been described, it presents turns that are very little visible, due to the jumble effect generated by the curvatures of random orientations of your hairs 2.

According to a particular embodiment, the hairs are of circular section. Its diameter is of the order of 13/100 of mm They are made of polyamide 6.

The brush comprises 23 to 25 hairs per turn.

A cross section of brush 1 perpendicular to the X axis is circular in shape, as illustrated in  Figure 3A

According to a variant illustrated in Figure 3B, the Brush section 1 is square cross section.

According to another variant illustrated in Figure 3C, the section of the brush 1 is triangular in shape.

The cross section of the hairs 2 can be in different ways

In Figure 4A, the hairs are compact and of circular section

In Figure 4B, the hairs 2 are of section in Four leaf clover shape.

In Figure 4C, the hairs 2 are of section triangular.

In Figure 4D, the hairs 2 are of section in rice grain shape.

In Figure 4E, the hairs 2 are hollow and of annular section

In Figure 4F, the hairs 2 are of section in C. shape

The brush 1 can comprise hairs 2 of a single type of section, or hairs of different sections, in mixture.

In the variant of Figure 5, only the part of the brush 1 located on the same side of the braided soul 3 ha been subjected to the heat treatment of step 204 of the figure eleven.

This results in a brush 1 which, on a portion 5 corresponding to 180º around the braided soul 3 it presents portions of rectilinear hairs, and that on the rest 6 it presents portions of curved hairs. Portions 5 and 6 are extend each of them over the entire length of the brush one.

Portion 5 is used for the application of product on the eyelashes. Portion 6 is used for eyelash separation.

In the variant of Figure 6, only the front half of brush 1, located opposite rod 4, has been subjected to the heat treatment of step 204 of the figure eleven.

This results in a brush 1 presenting, on a first axial portion 5, which extends substantially over the half the length of brush 1, straight hairs 2. On the other axial half 6, the hairs 2 are curved.

As for the previous embodiment, the portion 5 is used for the application of the product on the tabs. Portion 6 is used for the separation of tabs.

The brush 1 according to the variant of figure 7 is distinguishes from the brush according to figure 2 because the braided soul 3 it is curved, the curvature corresponding substantially to the curvature of the line of implantation of the eyelashes on the eyelid.

The brush 1 according to the variant of figure 8 is distinguishes from the brush according to figure 2 because it is of the type of "right brush", the turns of the braided soul 3 rise from right to the left when brush 1 is facing in vertical position.

       \ newpage
    

Again, you get a different makeup from the makeup obtained with the brush of figure 2.

In the embodiment of Figure 9, the application device 81 is configured in the form of a brush intended for the application of nail polish. It includes a tuft of hairs 82 fixed at the end of a rod 83 of X axis. The hairs 82 are oriented substantially parallel to the X axis (angle relative to the X axis less than 45º).

The end of the rod 83 opposite the tuft of hairs 82 is connected to an element 84 that forms both a gripping element for brush 81, and sealing element for the container to which the brush is associated.

The curvature of the hairs 82 of the brush 81 is obtained in the same way as for the curvature of the hairs of the mask brushes of the preceding figures simply immersing brush 81, for a dozen seconds, in water to 100 ° C

Because of the curvature of the hairs 82, the product retention of the brush is more important than in the case of rectilinear hairs. The autonomy of the brush is improved in the same measure.

A set of conditioning and application 100, equipped with a device of application 1 of the type described above with reference to figures 2 to 8. The assembly 100 comprises a container 101 containing a reserve of cosmetic product, such as a mask and an applicator 110. The applicator 110 comprises a application device 1, of the braided brush type, fixed on one end of a rod 4 of X axis. The other end of the rod 4 is integral with a gripping element 7 that constitutes also a closure cap of the container 101. The container 101 comprises a draining body 106 constituted here by a cylindrical sleeve, one of whose ends is terminated by a lip flexible ring 107. In the mounted position of the applicator 110 on the container 101, the application device 1 is in its integrity between the draining lip 107 and the bottom of the container. Other types of draining organs can be used, for example a block of open or semi-open cell foam, pierced axially by a groove or a passage, whose edges delimit it they are joined substantially by the edges in the absence of tension.

With a view to using the applicator, the user unscrew the cap formed by the gripping organ 7 and remove the applicator 110 of the container 101. Acting in this way, the application device 1 is induced to pass through the organ drainer 106, to dose the amount of product distributed on the teeth or on the hairs. The extraction movement of the applicator is of direction substantially longitudinal to the X axis. After use, the user puts the applicator back in the container, by passing the application device 1 again through the draining organ 106.

In the detailed description above it has been reference is made to preferred embodiments of the invention. It is evident that variants can be provided without separating from spirit of the invention, as claimed by continuation.

Claims (30)

1. Device (1, 81) for the application of a product, mainly make-up and / or treatment, comprising an arrangement of polymer fibers (2, 82) at least one free end, said fibers being fixedly mounted on a support (3, 83), characterized in that said fibers have, at least some of them, a curved portion that:

i)

be extends continuously from the support to one (or its) end Free and

ii)

is radius of average curvature less than 45 mm, being oriented said curved portions relative to each other of random way.

2. Device according to claim 1, characterized in that said curved portions are of substantially constant curvature from the support to the corresponding free end. Device (1, 81) according to claim 1 or 2, characterized in that the average radius of curvature of said curved portions is between 2 mm and 40 mm. Device (1, 81) according to claim 1 or 2, characterized in that the average radius of curvature of said curved portions is between 2 mm and 30 mm. Device (1, 81) according to claim 1 or 2, characterized in that the average radius of curvature of said curved portions is between 3 mm and 20 mm and preferably between 3 mm and 10 mm. Device (1, 81) according to any one of claims 1 to 5, characterized in that said fibers are made of a thermoplastic material, mainly of polyamide, or of a thermoplastic elastomer. Device (1, 81) according to any one of the preceding claims, characterized in that the diameter of the fibers is between 6/1000 mm and 35/100 mm, and preferably between 1/100 mm and 25 / 100 mm Device (1, 81) according to any one of the preceding claims, characterized in that it comprises a first group (6) of curved portions and a second group (5) of fibers or portions of substantially rectilinear fibers. Device (1, 81) according to any one of claims 1 to 7, characterized in that it comprises a first group of curved portions having a first radius of average curvature and a second group of curved portions that has a second radius of average curvature , different from the first. Device (1, 81) according to claim 8 or 9, characterized in that the first and second groups of curved portions are obtained from fibers formed of different materials, which mainly have different glass transition temperatures. Device (1, 81) according to claim 8 or 9, characterized in that the first and second groups of curved portions are obtained from fibers formed of identical materials. 12. Device (1, 81) according to any one of claims 1 to 11, characterized in that the fibers (2) are oriented transversely to a longitudinal axis X of the support. 13. Device (1, 81) according to claim 12, characterized in that the support is constituted by a braided core (3), formed from two rods, mainly of wire, braided one in relation to the other, being maintained the fibers (2) fixedly between the two braided rods and extending radially in relation to the braided core (3), the device for the application of product on the keratinous fibers, mainly the eyelashes or eyebrows. 14. Device (1, 81) according to claim 13, characterized in that the fibers (2) are arranged according to a helical arrangement, the number of fibers per turn being between 5 and 80, and preferably between 10 and 45. 15. Device (1, 81) according to claim 3 or 14, characterized in that a cross section of the application device (1) is circular or polygonal, mainly triangular, square or pentagonal. 16. Device (1, 81) according to any one of claims 13 to 15, characterized in that the braided core (3) is rectilinear. 17. Device (1, 81) according to any one of claims 13 to 15, characterized in that the braided core (3) is curved. 18. Device (1, 81) according to any one of claims 13 to 17, characterized in that the braided core (3) has a plurality of turns that rise from the left to the right when the device (1) is waxed in vertical position. 19. Device (1, 81) according to any one of claims 13 to 17, characterized in that the braided core (3) has a plurality of turns that rise from the right to the left when the device (1) is facing vertical position. 20. Device (1, 81) according to any one of claims 13 to 19 and according to any one of claims 8 to 11, characterized in that the curved portions of the first group are mixed on the support with the curved portions of the second group. 21. Device (1, 81) according to any one of claims 13 to 19 and according to any one of claims 8 to 11, characterized in that the first and second groups (5, 6) are separated. 22. Device (1, 81) according to claim 21, characterized in that the first and second groups (5, 6) are displaced along a longitudinal axis of the support. 23. Device (1, 81) according to claim 21, characterized in that the first and second groups (5, 6) are angularly displaced around the braided soul. 24. Device (1, 81) according to any one of claims 1 to 11, characterized in that the fibers (82) are oriented substantially parallel to a longitudinal axis X of the support. 25. Procedure for manufacturing a device (1, 81) for the application of a product, mainly makeup and / or treatment, which includes following stages:

i)

stably dispose of a plurality of polymeric fibers (2, 82) on a support (3, 83), and

ii)

after fiber fixation to the support, expose at least a part of the fibers (2, 82) to a temperature above the glass transition temperature of polymeric material that constitutes them, during a period of time  such:

C)

that said fibers (2, 82) have at least one curved portion; Y that

d)

the length of said fibers (2, 82) is substantially unchanged

26. Method according to claim 25, characterized in that the heating of said fibers (2, 82) is carried out by convection, mainly by immersion in a hot liquid, or by contacting with hot air, or by radiation, mainly infrared. 27. Method according to claim 26, characterized in that the heating is carried out by immersion of the fibers in hot water at approximately 100 ° C. 28. Method according to claim 27, characterized in that the fibers (2, 82) are immersed in said liquid for a period of time ranging from 4 to 25 seconds, and preferably from 7 to 15 seconds. 29. Conditioning set (100) and application of a product, mainly cosmetic, that understands:

to)

a tank (101) containing the product to be applied; Y

b)

a application device (1, 81) according to any one of the claims 1 to 24.

30. Set (100) according to claim 29, characterized in that the product is a make-up and / or treatment product for keratin fibers, mainly eyelashes or eyebrows.