Cosmetic product applicator
An applicator for cosmetic products, typically mascara, comprising a brush made up of fibers trapped between two twisted arms extending in an axial direction and defining turns is characterized in that at least one of said turns is a turn that is not circular. More particularly, these turns describe noncircular ellipses. Such an applicator can be obtained by radial crushing of a standard type brush.
1. A cosmetic product applicator comprising a brush made up of fibers trapped between two twisted arms extending in an axial direction and defining turns, the arms on two adjacent turns being in contact on a portion of a turn and the fibers being driven out on either side of this portion of the turn.
2. The applicator according to claim 1 , wherein the turns describe a noncircular ellipse.
3. The applicator according to claim 2 , wherein the noncircular ellipse has a ratio of large axis to small axis greater than 1.1.
4. The applicator according to claim 3 , wherein the ratio of large axis to small axis ranges between 1.3 and 1.6.
5. The applicator according to claim 1 , wherein the turns are formed by crushing circular turns.
6. The applicator according to claim 4 , wherein the turns are formed by crushing circular turns.
7. A device for conditioning and applying a product designed to be applied to the lashes or the eyebrows, comprising a container containing the product to be applied and an applicator according to claim 1 .
8. A brush manufacturing process comprising the steps of:
taking a brush comprising bristles trapped between two twisted arms extending in an axial direction; and
applying a radial pressure to said twisted arms so that the arms on two adjacent turns are brought in contact on a portion of a turn thus driving out the fibers on either side of this portion of the turn.
9. The manufacturing process according to claim 8 , wherein said radial pressure is applied by tightening said twisted arms between n jaws of a press, n ranging between 2 and 6.
10. The manufacturing process according to claim 9 , wherein the jaws are stopped at the end of their travel by a calibration gauge.
11. The manufacturing process according to claim 8 , further comprising a step of performing a rotation of said twisted arms after application of said radial pressure.
12. The manufacturing process according to claim 8 , further comprising a step of curving said twisted arms after application of said radial pressure.
13. A brush manufacturing process comprising the steps of:
taking a brush comprising bristles trapped between two twisted arms extending in an axial direction; and
applying a radial pressure to said twisted arms so that the arms define turns, wherein radial cross-sections of the arms describe noncircular turns; and
further comprising a step of performing a rotation of said twisted arms after application of said radial pressure.