Cosmetic treatment method

Patent metadata

Field	Value
Publication number	US-12089679-B2
Application number	US-201615747909-A
Country	US
Kind code	B2
Filing date	Jul 26, 2016
Priority date	Jul 31, 2015
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A cosmetic treatment method. The method includes applying an adhesive composition to human keratin materials, especially the skin. The method includes bringing fibres borne by an applicator into contact with the adhesive composition present on the keratin materials. The method includes moving the applicator away from the skin, so as to release fibres which adhere to the keratin materials, the holding force for holding the fibres on the applicator being lower than the adhesive force for adhesion of the fibres to the adhesive composition present on the keratin materials.

First claim

The invention claimed is:

1. A cosmetic treatment method comprising:
applying an adhesive composition to human keratin materials,
providing fibers that are parallel from each other in a predefined direction that is the same direction for all the fibers, the fibers being bonded on an applicator each by a bonded end and having each an end opposed from the bonded end that is free from the applicator,
after the fibers being provided, bringing at least some of the free ends of said fibers into contact with said adhesive composition present on said keratin materials,
moving the applicator away from the keratin materials, so as to release from the applicator the bonded ends of said fibers thanks to their adhesion to said keratin materials by their free ends, a holding force for holding the bonded end of said fibers on the applicator being lower than an adhesive force for adhesion of the free ends of said fibers to the adhesive composition present on said keratin materials.

2. The method according to claim 1 , the fibers being arranged on the applicator with a non-zero angle with normal to a support surface, the angle ranging from 0 to 45°.

3. The method according to claim 1 , the applicator being brought closer to said keratin materials along a direction perpendicular thereto, until the fibers contact the adhesive composition.

4. The method according to claim 1 , the adhesive force for adhesion of the fibers to the adhesive composition being at least double the holding force for retaining the fibers on the applicator.

5. The method according to claim 1 , a density of the fibers on the applicator being between 9 and 625 fibers/cm 2 .

6. The method according to claim 1 , a space between two adjacent fibers on the applicator being between 150 and 250 microns.

7. The method according to claim 1 , a density of fibers being uniform on the applicator.

8. The method according to claim 1 , a density of fibers being non-uniform on the applicator.

9. The method according to claim 1 , a force to be exerted on the fibers in order to release them from the applicator being less than or equal to 20 mN, or even less than or equal to 15 mN.

10. The method according to claim 1 , the fibers being retained by bonding or by friction on the applicator.

11. The method according to claim 1 , the fibers being retained by a mechanical system on the applicator, this mechanical system being able to pass from a fiber-retaining configuration to a fiber-releasing configuration, a force to be exerted on these fibers in order to release them from the applicator being greater in the retaining configuration than in the releasing configuration.

12. The method according to claim 11 , the mechanical system comprising a spring that grips the latter between its coils in the retaining configuration, the spring being able to be stretched in order to open the coils and release the fibers.

13. The method according to claim 1 , the fibers being retained on the applicator by a material a mechanical strength of which is degraded by a stimulus, the method comprising subjecting the applicator to said stimulus so as to reduce the force to be exerted on the fibers in order to release them from the applicator, an exposure to the stimulus taking place before and/or during the contact of the fibers with the adhesive composition present on said keratin materials.

14. The method according to claim 13 , the stimulus being thermal.

15. The method according to claim 14 , said material comprising a wax.

16. The method according to claim 13 , the stimulus comprising exposure to a solvent of said material.

17. The method according to claim 1 , the fibers being placed on the applicator by an electrostatic flocking method.

18. The method according to claim 1 , the fibers comprising a root that remains trapped by the applicator and a releasable portion.

19. The method according to claim 18 , the fibers comprising a zone that is mechanically weakened or sensitive to a stimulus that makes it possible to mechanically weaken it, a force to be exerted in order to give rise to the separation of a releasable portion of a fiber from the root being lower than the adhesive force for adhesion of the releasable portion to the adhesive composition.

20. The method according to claim 1 , the fibers being retained on the applicator by a multiple holding system, including a first holding system that releases the fibers for an exerted force lower than the adhesive force for adhesion of the fibers to the adhesive composition, and a second holding system that ensures, when combined with the first, the retention of the fibers up to a tensile force greater than the adhesive force for adhesion of the fibers to the adhesive composition, the second holding system being modified during usage of the applicator for applying the fibers to the adhesive composition so as to reduce a force to be exerted in order to give rise to the release of the fibers at a value lower than the adhesive force for adhesion of the fibers to the adhesive composition.

21. The method according to claim 1 , the adhesive composition being applied to the keratin materials as a continuous film.

22. The method according to claim 1 , the adhesive composition being applied to the keratin materials as a discontinuous film.

23. An assembly for the cosmetic treatment of human keratin materials, for an implementation of the method as defined in claim 1 , comprising:
the adhesive composition to be applied to said keratin materials,
the applicator comprising releasable fibers, the applicator making it possible to bring the fibers into contact with the adhesive composition applied to the human keratin materials, to enable them to adhere to said composition, and to release fibers, the holding force for holding the fibers on the applicator being lower than the adhesive force for adhesion to the adhesive composition present on said keratin materials.

24. The assembly for the cosmetic treatment of human keratin materials as defined in claim 23 , wherein the applicator comprises releasable fibers that detach from the applicator when a tensile force equal to 15 mN, or even equal to 20 mN, is exerted on it.

25. An assembly for the cosmetic treatment of human keratin materials, for an implementation of the method as defined in claim 1 , comprising:
the adhesive composition to be applied to said keratin materials,
the applicator comprising releasable fibers, the applicator making it possible to bring the fibers into contact with the adhesive composition applied to the human keratin materials, to enable them to adhere to said composition, and to release fibers, the holding force for holding the fibers on the applicator being lower than the fibers adhesive force for adhesion to the adhesive composition present on said keratin materials, the applicator comprising a gripping portion which is used to carry out several treatments and a refill that bears the fibers, the refill being able to be removably attached to the gripping portion at each new use.

26. The assembly according to claim 25 , wherein the refill is in a form of a sheet, a strip or a support arranged in order to be attached to the gripping portion, being easily replaceable, having the fibers on at least one face.

27. The assembly according to claim 25 , wherein the refill is arranged in order to be attached to the gripping portion by snap-fastening.

Assignees

• Oreal

Inventors

• Blanc Jean-Baptiste
• Giron Franck
• Samain Henri
• Gevrey Christèle

Classifications

• B05B5/1683

  specially adapted for particulate materials · CPC title

• A41G5/02

  Artificial eyelashes; Artificial eyebrows · CPC title

• A41G5/0086

  Applicators or tools for applying hairpieces to the user · CPC title

• A41G5/0033 Primary

  by adhesives · CPC title

• A41G5/008 Primary

  by adhesives · CPC title