Cosmetic Product Applicator

Abstract

An applicator for a cosmetic product, including projections each having a base and arranged in at least two groups of projections, wherein the applicator has a longitudinal axis. The bases of projections in the same group form at least one closed loop through which the longitudinal axis of the applicator does not extend.

Claims

1. A Cosmetic product applicator comprising projections each having a base and arranged in at least two groups of projections, the applicator having a longitudinal axis, the bases of the projections in the same group forming at least one closed loop through which the longitudinal axis of the applicator does not extend.

2. The applicator according to claim 1, wherein the projections of at least one of the groups of projections form at least one ring.

3. The applicator according to claim 1, wherein a main axis of at least one of the groups of projections extends in a plane perpendicular to the longitudinal axis of the applicator.

4. The applicator according to claim 1, wherein the groups of projections form at least two sets, each group of projections having a main axis, the main axes of the groups in the same set extending in one plane.

5. The applicator according to claim 4, wherein the one plane comprising the main axes of the groups of projections of one of the sets is parallel to another plane comprising the main axes of the groups of projections of another one of the sets and separate from the one plane.

6. The applicator according to claim 4, wherein, in at least one of the sets, the main axes of at least two of the groups of projections coincide.

7. The applicator according to claim 4, wherein, in at least one of the sets, the main axes of at least two of the groups of projections are perpendicular.

8. The applicator according to claim 4, wherein, in at least one of the sets, at least two of the groups of projections are an image of each other by a rotation about the longitudinal axis of the applicator.

9. The applicator according to claim 4, wherein at least two of the sets are symmetrical to one another relative to a plane.

10. The applicator according to claim 4, wherein at least one of the sets is an image of itself by a rotation of less than one revolution about the longitudinal axis of the applicator.

11. The applicator according to claim 4, wherein at least two of the groups of projections of at least two of the sets are aligned along the longitudinal axis of the applicator.

12. The applicator according to claim 4, arranged so that it does not comprise two respective groups of projections of at least two of the sets which are aligned along the longitudinal axis of the applicator.

13. The applicator according to claim 1, wherein at least one of the groups of projections is formed by at least one double row of projections whose respective bases form a closed loop.

14. The applicator according to claim 1, wherein at least one of the groups of projections has a central opening through the applicator from one side to the other.

15. The applicator according to claim 14, wherein the central openings of at least two of the groups of projections communicate with each other.

16. The applicator according to claim 1, which further comprises at least one group of projections of which one main axis coincides with the longitudinal axis of the applicator.

17. The applicator according to claim 1, which further comprises at least one support for a group of projections, this support extending from a core of the applicator.

18. The applicator according to claim 1, wherein the loops formed by the bases of the projections of at least two separate groups differ by at least one dimension.

19. The applicator according to claim 1, wherein the loops formed by the bases of the projections of at least two separate groups have identical dimensions.

20. The applicator according to claim 1, wherein at least one of the loops has a generally oblong shape.

21. The applicator according to claim 1, wherein at least one of the loops is non-planar.

22. The applicator according to claim 1, wherein at least one of the loop extends around the longitudinal axis of the applicator over a range of between 20 and 350.

23. The applicator according to claim 1, wherein at least one of the loops has a generally helical shape.

24. The applicator according to claim 1, wherein a direction of a larger dimension of at least one of the loops is parallel to the longitudinal axis.

25. The applicator according to claim 1, wherein a direction of a larger dimension of at least one of the loops is inclined relative to the longitudinal axis by an angle of between 5 and 90.

26. The applicator according to claim 1, comprising a hollow core.

27. The applicator according to claim 1, arranged so that, seen from one end, no space is left free by the projections over the entire circumference of a core of the applicator.

28. The applicator according to claim 1, comprising a core having more than ten holes extending out of the loops.

29. A cosmetic article comprising an applicator according to claim 1.

30. A method of manufacturing by additive synthesis an applicator comprising projections each having a base and arranged in at least two groups of projections, the applicator having a longitudinal axis, the bases of the projections in the same group forming at least one closed loop through which the longitudinal axis of the applicator does not extend comprising the following steps: obtaining data concerning the applicator; and additive synthesis of the applicator using the data.

31. An electronic storage medium comprising stored data to implement the method according to claim 30.

32. A method of placing on a telecommunications network a computer file comprising data suitable for use by a computer program for controlling the implementation of the method according to claim 30, in order to download the computer file.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0073] We will now describe several embodiments of the invention given as non-limiting examples in reference to the drawings, in which:

[0074] FIG. 1 is a diagrammatic longitudinal cross-section of a cosmetic article according to one embodiment of the invention;

[0075] FIGS. 2A to 2C are views respectively from the free end and from the side according to two different degrees of rotation of an embodiment of the applicator of FIG. 1;

[0076] FIG. 2D is a longitudinal cross-section along the plane D-D of the applicator of FIGS. 2A to 2C;

[0077] FIGS. 3A to 3C are respectively a side view, a longitudinal cross-section and a view from the free end of a second embodiment of the applicator of FIG. 1;

[0078] FIG. 4 is a view from the free end of a third embodiment of the applicator of FIG. 1;

[0079] FIGS. 5A to 5C are side and perspective views of a fourth embodiment of the applicator of FIG. 1 showing different degrees of rotation about its longitudinal axis;

[0080] FIG. 5D is a cross-section of the applicator of FIGS. 5A to 5C; and

[0081] FIG. 5E is a view, from its free end, of the applicator shown on FIGS. 5A to 5D.

DETAILED DESCRIPTION OF THE INVENTION

[0082] We will now describe four embodiments of the applicator and of the method according to the invention, in reference to FIGS. 1 to 5E. We will describe here mascara applicators but, obviously, the applicator according to invention could be used with another cosmetic product, for example nail varnish, lipstick or gloss.

[0083] The mascara applicator 1 described in this embodiment is part of a cosmetic article 2 comprising a cap or plug 3, to which the applicator 1 is rigidly attached, and a case 4 comprising a mascara container 5 and a wiper 6 (see FIG. 1) housed in the collar of the container on which the cap can be removably attached, for example screwed, to close the container of the article. The applicator thus extends in the container and is immersed in the mascara.

[0084] Obviously, other types of article with mascara applicators can be considered such as for example pen type articles in which the applicator is not connected to a cap or articles in which the applicator is not immersed in the mascara reserve when not used.

[0085] The applicator is carried by a straight rod 8 which connects it to the cap 3. The applicator has an elongate general shape along its longitudinal axis 9. The rod 8 has a generally straight cylindrical shape. The rod and the applicator are connected together by one of their ends.

First embodiment: FIGS. 2A to 2D

[0086] The Applicator

[0087] The applicator 100 described in this embodiment comprises thirteen groups 10 of projections 11. Each group of projections comprises the same number of projections 11, namely thirty in this case. Obviously, the groups 10 of projections could comprise different numbers of projections 11.

[0088] In this embodiment, the groups 10 form three sets 13 of groups. Each set 13 is composed of four groups 10 of projections. Obviously, the applicator could comprise a greater or smaller number of sets 13 and these sets could be composed of a greater or smaller number of groups 10 of projections. The sets 13 could also not all be composed of the same number of groups 10. The groups 10 of the various sets 13 are aligned along the longitudinal axis 9 of the applicator. Obviously, the groups of the various sets could be offset relative to each other along the longitudinal axis 9 of the applicator. The groups thus form four rectilinear rows of groups, the rows being parallel to the axis 9. They also form three circular rows in planes perpendicular to the axis, which form the sets.

[0089] Within the same set 13, the groups 10 are the images of each other by a 90 rotation about the longitudinal axis of the applicator. Obviously, this rotation could be greater or smaller, for example greater than 100 or less than 80, even greater than 120 or less than 60, or even greater than 150 or less than 40. In addition, none of the groups 10 of projections in the same set 13 could be the image by rotation of another group 10 in the same set.

[0090] The main axes 14 of the groups 10 of projections in the same set 13 are all located in the same plane (see FIG. 2A). The groups 10 in the same set 13 are separated by an angle of 90 relative to the longitudinal axis 9 of the applicator. Thus, the main axes 14 of two groups located on either side of the applicator coincide. The main axes of two groups 10, which follow each other directly on turning around the longitudinal axis of the applicator are perpendicular.

[0091] The three planes containing the main axes 14 of the groups 10 of the three sets 13 of the applicator are parallel to each other (see FIG. 2C). Obviously, only some of these planes could be parallel to each other.

[0092] In the present case, these planes are perpendicular to the axis 9 of the applicator. Obviously none of the planes, or only some of them, could be perpendicular to this axis.

[0093] There is a plane of symmetry between the sets 13 of the applicator. In the present case, there is a plane of symmetry between each pair of consecutive sets along the axis of the applicator. There could be a plane of symmetry between only some of the sets 13 of the applicator 100.

[0094] The bases of the projections 11 in the same group form a closed loop 12. Each projection comprises its own base. The bases are therefore included in the projections. In other words, each base of each projection is independent of the other bases of the other projections. Apart from the group 10 located at the free end of the applicator 100, the longitudinal axis 9 of the applicator does not extend through the loop 12 of the groups. The main axis of the group located at the free end of the applicator coincides with the longitudinal axis of the applicator.

[0095] The loops, other than the loop of the group 10 located at the free end of the applicator, are all identical. They have a generally oblong shape (see FIG. 2C) and each one extends in a plane parallel to the axis 9. The loop 12 of the group 10 located at the free end has a diamond shape (see FIG. 2A). Obviously, the loops could have different shapes. All the loops could also be different from each other.

[0096] The direction of the largest dimension of the loops 12 is parallel to the longitudinal axis 9 (see FIG. 2C). Obviously, this does not have to be the case and this direction could be inclined at an angle of between 5 and 90, for example between 15 and 80, or between 30 and 60, or even between 40 and 50.

[0097] The loop 12 of any group 10, except the end group, defines a central opening 15 through the applicator from one side to the other. In the present case, each group has a central opening 15 through the applicator from one side to the other up to the opening of the diametrically opposed group. Obviously, only a few groups could have a central opening 15 through the applicator from one side to the other. Also, none of the groups could have such an opening.

[0098] In a particular embodiment, at least some of the central openings 15 of the groups, even all the central openings 15, could be partly blocked by a mesh or lattice.

[0099] In the present case, the applicator comprises a hollow core so that all the central openings 15 of the applicator communicate with each other, in particular along the axis 9. Obviously, these central openings 15 do not all have to communicate with each other.

[0100] The walls of the core are solid, but this does not have to be the case. For example, a wall could be perforated, thereby forming a mesh or lattice or an exoskeletal structure.

[0101] The projections 11 of a group 10 of projections are all identical. They are rectilinear, elongate and their thickness decreases substantially from their base to their tip. They extend from the loop 12 defined by their base towards the outside, in other words in a direction extending away from the longitudinal axis 9 of the applicator 100. They are arranged in an ordered row going around the loop 12 and thus form a ring. In the present case, all the groups 10 of projections 11 of the applicator 100 form a ring. This arrangement could also be designated as a flower or corolla configuration. Taken all together, the projections of a group have a flared envelope surface.

[0102] There are several planes of symmetry within the same group 10 of projections 11. There is in particular a plane of symmetry containing the direction of the largest dimension of the loop 12 and another plane containing the direction of the smallest dimension of the loop 12. The projections could have a different shape, for example curved or wavy, even conical and/or hollow.

[0103] The groups of projections are carried by a support 16. This support 16 is formed by a bulge in the core of the applicator. In the present case, each group 10 of projections is carried by such a support 16. Obviously, none, or only some, of the groups could be carried by a support 16. The supports do not necessarily have to be separate from the core of the applicator.

[0104] Using the Applicator

[0105] Initially, the user handles the applicator 100, holding the cap 3 between her fingers and inserts the applicator 100 into the mascara container 5 of the article 2. During this step, the projections 11 are loaded with mascara.

[0106] When the applicator is removed from the container, it passes through the wiper 6 and the projections 11 are thus wiped so as to leave only the amount necessary for the make-up on them and thereby avoid the formation of clumps. Mascara is also present on the body of the applicator between the various groups in their centers.

[0107] During use, the user brings the applicator up to her eyelashes in order to apply the make-up, using a traditional make-up movement, mostly vertical. The mascara present on the projections 11 is thus deposited on the eyelashes. In the same movement, these projections smooth the mascara deposited and comb the eyelashes. In the present case, for a row of eyelashes there are three make-up areas along the applicator 100 which correspond to the three groups 10 aligned along the longitudinal axis 9 of the applicator which produce a make-up effect by area.

[0108] In addition, the fact that the core is hollow gives the applicator a certain degree of flexibility making application of the mascara more pleasant for the user.

[0109] The group of projections located at the free end of the applicator allows more precise make-up of the eyelashes, for example on a small area, and is thus particularly useful to touch up the make-up.

Second Embodiment: FIGS. 3A to 3C

[0110] We will now describe a second embodiment of the applicator according to the invention, which can be used in the article of FIG. 200.

[0111] The applicator of this embodiment differs from the applicator of the first embodiment in various respects. We will only describe the differences between this embodiment and the previous one.

[0112] Firstly, the core of this applicator 200 is perforated between the groups. This characteristic makes the applicator more flexible and therefore application of the make-up more pleasant for the user. In the present case, the core comprises a large number of holes. This number is greater than one hundred, for example greater than two hundred, or even greater than three hundred. This large number of holes gives the core a mesh or lattice structure, even an exoskeletal type structure. The holes may have different sizes and shapes. Most have generally irregular substantially circular or oblong shapes. Obviously, other shapes are possible, for example generally polygonal shapes.

[0113] In this embodiment, the applicator 200 comprises thirty-seven groups 10 of projections 11. These groups are distributed into nine sets composed of four groups 10 each, as well as a group located at the free end.

[0114] There are two types of sets, namely sets 13 of a first type in which the groups 10 are carried by supports 16 and sets 17 of a second type in which the groups 10 are not carried by supports 16 (see FIGS. 3A to 3C). In the present case, the applicator comprises five sets 13 of the first type and four sets 17 of the second type. The loops 12 and the projections 11 of the groups 10 of these sets 17 are smaller than those of the other sets 13.

[0115] These types of sets 13, 17 alternate when moving along the applicator from its proximal end towards its free end. This characteristic allows the applicator to comprise a greater number of sets 13, 17 and to have a higher density of projections.

[0116] In addition, these types of sets are staggered with reference to their angular position about the axis, in other words when viewing the applicator from one end. Thus, the groups associated with the first type are not aligned with those of the second type parallel to the axis and even extend between two groups of the second type.

[0117] Obviously, there could be a different number of sets 13, 17 and/or the sets could be composed of a different number of groups 10 of projections 11.

[0118] Another difference compared with the first embodiment lies in the fact that the groups of projections are composed of a double row of projections 11. This characteristic also increases the density of projections 11 of the applicator 1. The groups 10 could be composed of more than two rows of projections, for example three, four or five. The various rows of projections 11 of the same group 10 could be composed of the same number of projections. The number of projections in the various rows could also be different.

[0119] The loops 12 of the various groups 10 of this applicator each define central openings 15 which are partly blocked and form a mesh or lattice or an exoskeletal structure similar to that of the core of the applicator. The central openings 15 of all the groups 10 of projections communicate with each other. This applicator comprises groups with loops 12 which may be oblong or circular with larger or smaller dimensions which may vary between the various loops.

[0120] When looking at the applicator from its free end, the entire periphery of the applicator is occupied by projections 11 of the groups 10 of the various sets 13, 17. As seen previously, the groups 10 of projections of two consecutive sets along the applicator are offset angularly around the longitudinal axis 9 of the applicator.

[0121] The use of this applicator is similar to that of the applicator of the first embodiment except that there are more make-up areas and that different make-up effects are obtained depending on whether or not the group 10 of projections making up the eyelash is carried by a support 16. This latter characteristic can be used for example to curve the eyelashes differently and give the row of eyelashes a wave which is a make-up effect particularly required by the user.

Third Embodiment: FIG. 4

[0122] This embodiment differs from the second embodiment only by the fact that the applicator 300 does not comprise sets 17 of the second type, in other words whose groups 10 are not carried by supports 16 (see FIG. 4). The density of groups and projections is therefore reduced.

[0123] The use of this applicator is similar to that described for the first two embodiments.

Fourth Embodiment: FIGS. 5A to 5E

[0124] The applicator 400 of this embodiment differs from the applicator of the first embodiment in various respects.

[0125] Referring to FIGS. 5A to 5E, this applicator comprises two main types of groups 10, 18 of projections 11.

[0126] A first type of groups 10 of projections is similar to those described in the first embodiment. The groups 10 of projections of this type are carried by a support 16 (see FIG. 5C).

[0127] The second type of groups 18 of projections is particular in that the loop 12 formed by the projections is more elongate and winds partly around the longitudinal axis 9 of the applicator. This winding winds the group 10 of projections 11 around this axis. The winding range of a group 18 around the axis of the applicator extends over 180 in the present case. This range could be between 20 and 350, preferably between 180 and 300. These groups 18 have a generally helical shape.

[0128] The groups 10, 18 of projections of the same type are all identical to each other and are aligned along the longitudinal axis 9 of the applicator.

[0129] The loops 12 of all the groups 10, 18 are non-planar. Obviously, this does not have to be the case for the groups other than those which wind around the longitudinal axis 9 of the applicator.

[0130] In the present case, the applicator comprises four groups 18 of projections of the second type (winding around the longitudinal axis 9) and four groups 10 of projections of the first type. In the embodiment described on FIGS. 5A to 5E, the most distal group 18 of projections is truncated such that its loop is not closed.

[0131] In this embodiment, the applicator comprises two sets 19, 20 of groups 10, 18 of projections. In these sets 19, 20, the groups 10, 18 are aligned along the longitudinal axis 9. The main axes of the groups of these two sets are contained in the same plane, this plane also containing the longitudinal axis 9. Obviously, there could be a greater number of sets. These sets could also be composed of a larger or smaller number of groups.

[0132] The loops 12 defined by the groups 10, 18 of projections all define a central through-opening 15. All the openings 15 communicate with each other.

[0133] The largest dimension of the loops of the various groups of projections is inclined relative to the longitudinal axis of the applicator. This inclination is between 5 and 90, for example between 15 and 80, even between 30 and 60, or even between 40 and 50. Obviously, the largest dimension of these loops 12 could be parallel to this axis.

[0134] The Manufacturing Method

[0135] The applicators described above are manufactured in one piece. More particularly, these applicators are manufactured in this case by additive synthesis, also known as 3D printing.

[0136] Any suitable material can be used to manufacture these applicators. It may be a plastic, for example a polyamide, in particular a polyamide 1102, a PEBA 2301, or an ABS type resin, or a powdered metal such as a stainless steel or titanium.

[0137] The material may be rigid but will preferably be elastically flexible. Preferably, the material, in combination with the applicator's shape characteristics, gives the applicator a certain degree of flexibility.

[0138] Note that the length of a mascara applicator is generally less than 20 mm.

[0139] Several additive synthesis methods may be used to manufacture an applicator as described previously. We may mention in particular selective laser sintering from powdered material, and stereolithography (SLA). In the present case, a selective laser sintering method is used, this method offering the advantage of allowing objects of complex shape to be manufactured.

[0140] The applicator is first designed using computer-aided design (CAD) software. A file in STL format with the applicator design data is therefore created and then exported. These data determine the shape of the applicator. Other standard file formats for additive synthesis may be used.

[0141] This file is then processed by software supplied by the manufacturer of the machine used to carry out the additive synthesis. This software breaks down the file into sections in the form of about hundred digital images in SLI or BFF format, each image corresponding to a layer of the model to be printed, i.e. to a section of the applicator taken in a plane perpendicular to the longitudinal axis of the applicator 9. These data are then sent to the printer to produce the applicator.

[0142] Once the synthesis is finished, treatments may be applied to the applicator, for example to improve its appearance.

[0143] Obviously, numerous modifications can be made without leaving the scope of the invention.

[0144] The embodiments described above concern mascara applicators and eyeliners, but these characteristics can be applied to other types of cosmetic product applicator such as applicators of nail polish, lipstick or cosmetic product for the eyebrows or the hair.