Instrument for applying a product to superficial epidermal derivatives and its method of manufacture

1. An instrument for applying a product to epidermal derivatives, the instrument comprising:

a) an elongated core for providing a plastically deformed twisted portion; and

b) a plurality of distinct nuclei stacked against each other, each nucleus supporting an applicator of the product, wherein the plurality of distinct nuclei are independent from each other and do not form a single piece,

wherein the core passes through each nucleus, and

wherein the core and the nucleus are connected to prevent the nucleus from pivoting freely on the core.

2. The instrument of claim 1 , wherein the nuclei are basically identical to each other.

3. The instrument of claim 1 , wherein the applicator comprises protuberances protruding from the nucleus.

4. The instrument of claim 1 , wherein applicator is associated with the nucleus.

5. The instrument of claim 1 , wherein the nucleus is a plate.

6. The instrument of claim 1 , wherein the instrument is a mascara applicator for eyelashes.

7. The instrument of claim 1 , wherein each nucleus comprises a central member having at least one aperture defined therein and further comprises a plurality of applicators extending outward from the central member.

8. The instrument of claim 7 , wherein the nucleus is solid and generally disk shaped.

9. The instrument of claim 7 , wherein the nucleus is solid and elongated, the at least one aperture extending axially through the nucleus.

10. An instrument for applying a product to epidermal derivatives, the instrument comprising:

a) an elongated core plastically deformed to form a twisted portion; and

b) at least one nucleus supporting an applicator of the product, whereby the core passes through the nucleus, whereby the core and the nucleus are connected to prevent the nucleus from pivoting freely on the core, and whereby the twisted portion has a plurality of protuberances integral with and protruding helically from the nucleus, the plurality of protuberances protruding helically as a result of plastic deformation of the elongated core.

11. The instrument of claim 10 , wherein the protuberances extend radially and in a spiral from the twisted portion.

12. The instrument of claim 10 , wherein the protuberances are expanded as a result of plastic deformation of the twisted portion.

13. A method of manufacturing an instrument for applying a product to epidermal derivatives, the method comprising:

a) providing an elongated core;

b) providing at least one nucleus supporting an applicator of said product;

c) assembling said core and at least one nucleus such that the core passes through the nucleus; and

d) plastically deforming the core by twisting,

wherein the core and the nucleus are connected to prevent the nucleus from pivoting freely on the core, and

wherein the core is twisted.

14. The method of claim 13 , wherein a plurality of nuclei each supporting a corresponding means of application are manufactured during step b), and wherein said nuclei are stacked on each other during step c), each nucleus is passed through by the core.

15. The method of claim 13 , wherein the instrument is a mascara applicator for eyelashes.

16. A method of manufacturing an instrument for applying a product to epidermal derivatives, the method comprising:

a) providing an elongated core;

b) providing at least one nucleus supporting an applicator of the product; and

c) assembling said core and at least one nucleus such that the core passes through the nucleus,

wherein the core and the nucleus are connected to prevent the nucleus from pivoting freely on the core,

wherein the core is twisted, and

wherein a one-piece part forming the nucleus and the means of application supported by the nucleus are cut in a plate during step b).

17. The method of claim 16 , wherein the means of application supported by said nucleus are cut in the plate with a laser.

18. An instrument for applying a product to epidermal derivatives, the instrument comprising:

a) an elongated core having at least a portion of which is twisted, wherein the core comprises at least one U-shaped pin with two longitudinal branches connected by a transverse arm, the nucleus having two holes in which said longitudinal branches are inserted; and

b) at least one nucleus supporting an applicator of said product,

wherein said core passes through said nucleus, and

wherein the core and the nucleus are connected to prevent the nucleus from pivoting freely on the core.

19. A method of manufacturing an instrument for applying a product to epidermal derivatives, the method comprising:

a) providing an elongated core;

b) providing at least one nucleus supporting an applicator of the product; and

c) assembling said core and at least one nucleus such that the core passes through the nucleus

wherein the core and the nucleus are connected to prevent the nucleus from pivoting freely on the core, and

wherein the core is twisted, the twisting step being carried out after the assembly step.

20. A method of manufacturing an instrument for applying a product to epidermal derivatives, the method comprising:

a) providing an elongated core;

b) providing at least one nucleus supporting an applicator of the product; and

c) assembling said core and at least one nucleus such that the core passes through the nucleus,

wherein the core and the nucleus are connected to prevent the nucleus from pivoting freely on the core,

wherein the core is twisted,

wherein a U-shaped pin with two longitudinal branches connected by a transverse arm is manufactured or procured during step a),

wherein at least one nucleus supporting the applicator is manufactured or procured during step b), the nucleus having two holes, and

wherein the longitudinal branches are inserted in the two holes, respectively, during step c).

21. An instrument for applying a product to epidermal derivatives, the instrument comprising:

a) a plurality of nuclei, each nucleus supporting a corresponding applicator of the product, wherein the plurality of nuclei are independent from each other and do not form a single piece; and,

b) an elongated twisted core, wherein the core passes through each nucleus, wherein the nuclei are stacked against each other, and wherein the core and the nucleus are connected to prevent the nucleus from pivoting freely on the core.

22. An instrument for applying a product to epidermal derivatives, the instrument comprising:

a) an elongated one-piece twisted core; and

b) at least one nucleus supporting an applicator of the product and having a single non-circular shaped through-hole defined therein, wherein each nucleus has a single non-circular shaped through hole which is bounded by an edge with a rectilinear portion, and wherein each nucleus is adapted to support at least one protuberance which extends helically as a result of the plastic deformation of the elongated core

wherein the core passes through the nucleus,

wherein the core and the nucleus are connected to prevent the nucleus from pivoting freely on the core, the through-hole cooperating with the core, the cross-section of the core being of a shape matching that of the through-hole.