Twisted cosmetic brush

Abstract

A cosmetic brush that includes a plurality of polymer bristles that extend from a polymer core in a radial direction, wherein at least a portion of the core is twisted and bristles in the twisted portion are arranged in one or more columns disposed in one or more spiral paths that extend along at least a portion of the longitudinal axis of the core is presented.

Claims

1. A cosmetic brush comprising: a polymer core extending along a longitudinal axis and defining a first portion thereof extending between a first end of the first portion and a second end of the first portion; a plurality of polymer bristles extending from the polymer core in a radial direction, wherein at least the first end of the first portion of the core is twisted about the longitudinal axis relative to the second end of the first portion of the core to define a twisted portion and wherein bristles in the twisted portion are arranged in one or more columns disposed in one or more spiral or helical paths about at least a portion of the longitudinal axis of the core, the plurality of polymer bristles integrally molded with the polymer core, wherein the molded polymer core is twisted with a plurality of twist angles via an application of heat such that the plurality of polymer bristles have an organized randomness, wherein an upper most bristle in the twisted portion is offset from a lower most bristle in the twisted portion by one of the plurality of twist angles, wherein the twist angles are angles between two bristles in different rows within the twisted portion, wherein the molded polymer core is twisted with the plurality of twist angles throughout the entire twisted portion, and wherein the plurality of twist angles are distinct from each other.

2. The cosmetic brush of claim 1 wherein the twist of the core is permanently fixed.

3. The cosmetic brush of claim 2 wherein the configuration of each spiral or helical path is permanently fixed.

4. The cosmetic brush of claim 1 wherein each column of bristles in the twisted portion of the core is disposed in a separate spiral or helical path that extends about at least a portion of the longitudinal axis of the core.

5. The cosmetic brush of claim 4 wherein none of the spiral or helical paths intersect with one another.

6. The cosmetic brush of claim 1 wherein one of the plurality of the twist angles is 90 degrees.

7. The cosmetic brush of claim 1 wherein one of the plurality of the twist angles is 180 degrees.

8. The cosmetic brush of claim 1 wherein one of the plurality of the twist angles is 270 degrees.

9. The cosmetic brush of claim 1 further comprising a non-twisted portion of the core with one or more columns of bristles disposed in one or more straight paths that extend substantially parallel to the longitudinal axis of the core.

10. The cosmetic brush of claim 9 wherein none of the straight paths intersect.

11. The cosmetic brush of claim 1 wherein one end of the core defines a stem.

12. The cosmetic brush of claim 11 wherein the stem is configured for connection to a handle.

13. The cosmetic brush of claim 1 wherein the bristles are manufacturing from a thermoplastic material.

14. The cosmetic brush of claim 1 wherein the bristles and the core are manufactured from the same material.

15. The cosmetic brush of claim 1 wherein the brush is configured for use as a mascara brush.

16. The cosmetic brush of claim 1 wherein the brush is configured for use as a hair coloring brush.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a side view of a cosmetic brush in accordance with an exemplary embodiment of the invention with at least a portion of the bristles having a 90 degree twist angle;

(2) FIG. 2 is a perspective view of the cosmetic brush of FIG. 1;

(3) FIG. 3 is a side view of a cosmetic brush in accordance with another exemplary embodiment of the invention with at least a portion of the bristles having a 180 degree twist angle;

(4) FIG. 4 is a perspective view of the cosmetic brush of FIG. 3;

(5) FIG. 5 is a side view of a cosmetic brush in accordance with another exemplary embodiment of the invention with at least a portion of the bristles having a 270 degree twist angle;

(6) FIG. 6 is a perspective view of the cosmetic brush of FIG. 5; and

(7) FIG. 7 is a perspective view of a cosmetic brush in accordance with another exemplary embodiment of the invention with at least a portion of the bristles having a 360 degree twist angle.

DETAILED DESCRIPTION

(8) The present disclosure provides polymer cosmetic brushes having randomized bristles. Cosmetic brushes according to the present disclosure provide an improved degree of volumization over standard thermoplastic brushes and also reduce clumping that is associated with traditional nylon and wire brushes.

(9) As used in this document, the singular forms a, an, and the include plural references unless the context clearly dictates otherwise. Unless defined otherwise, all technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art. As used in this document, the term comprising means including, but not limited to.

(10) As used herein, the term cosmetic brush includes, but is not limited to, mascara brushes and hair coloring brushes. Cosmetic brushes disclosed herein include a core member with at least one twist angle greater than zero degrees. In general, the twist angle is measured between two bristles in different rows, namely the bristles in the upper most and lower most rows within the twisted portion. In an untwisted arrangement, the twist angle between the two bristles is zero, i.e. the bristle column is substantially parallel to a longitudinal axis of the core. In a twisted arrangement, the twist angle between the same two bristles is greater than zero. In one embodiment, the twist angle is from about 1 degree to about 360 degrees. Any specific angle within this range is suitable (e.g., 2 degrees, 3 degrees, 4 degrees, 5 degrees, 10 degrees, 20 degrees, 30 degrees, 40 degrees, etc.). It is further contemplated that the twist angle may be greater than 360 degrees. It is contemplated that the entire core possesses at least one twist angle, however, it is also possible that a portion of the core is twisted while another portion is not. It is further contemplated that the core may include more than one twist angle such that a portion of the bristles extend at a first twist angle and another portion of the bristles extend at a second, distinct twist angle.

(11) The core member extends along a longitudinal axis XX and may have any suitable cross-sectional shape. Exemplary shapes for the core member includes, but are not limited to, circular, oval, triangular, square, trapezoidal, hexagonal, and the like. The bristles can also have any suitable cross-sectional shape (e.g. circular, oval, triangular, square, trapezoidal, hexagonal, etc.). The bristles can also be round or flat.

(12) The cosmetic brushes are manufactured from a polymer material, which may include synthetic or semi-synthetic materials. Preferably, both the core and the bristles are manufactured from a thermoplastic material; however, the invention is not limited to such. One or both of the core and bristles may be manufactured from a different material. Additionally, the core and bristles are preferably manufactured from the same material; however, the may be manufactured from different materials from one another.

(13) The cosmetic brushes according to the invention can be fabricated according to any suitable method. In one exemplary method, a thermoplastic brush is initially molded (e.g. via injection molding, extrusion, or the like) with the bristles formed integrally with the core in parallel, non-twisted columns. At least a portion of the molded core is then twisted via an application of force, heat, wind, chemicals, or a combination thereof, that results in a permanent deformation (e.g. twisting) of the core with the bristles in the twisted area extending in spiral or helical columns.

(14) Referring to FIGS. 1 and 2, a cosmetic brush 10 in accordance with an exemplary embodiment of the invention will be described. The brush 10 includes a plurality of polymer bristles 20 that extend from a polymer core 30 in a radial direction. In this embodiment, the core 30 includes a twisted portion 50 having a twist angle of approximately 90 degrees. Bristles 20 in the twisted portion 50 are arranged in multiple columns disposed in multiple spiral or helical paths 60 that extend about a portion of the longitudinal axis XX of the core 30. None of the spiral/helical paths intersect. As illustrated in FIG. 2, the upper most bristle 20a in the twisted portion 50 is offset from the lower most bristle 20b in the twisted portion 50 by about 90 degrees.

(15) In the illustrated embodiment, the core 30 also includes an untwisted portion 40 in which the core 30 is not twisted and the bristles 20 are disposed in multiple straight paths that extend generally parallel to the longitudinal axis XX of the core 30. The opposite end of the core 30 may optionally include a stem 70. The stem 70 facilitates connection of the cosmetic brush to a handle or the like (not shown).

(16) The view presented in FIG. 1 provides a view of the bristles 20 as randomized in the twisted portion 50. The view presented in FIG. 2 provides a view of the bristles 20 as disposed in multiple spiral or helical paths that extend about a portion of the longitudinal axis XX of the core 30. As such, it can be said that the bristles 20 have an organized randomness.

(17) Referring to FIGS. 3 and 4, a cosmetic brush 10 in accordance with another exemplary embodiment of the invention will be described. The brush 10 includes a plurality of polymer bristles 20 that extend from a polymer core 30 in a radial direction. In this embodiment, the core 30 includes a twisted portion 50 having a twist angle of approximately 180 degrees. Bristles 20 in the twisted portion 50 are arranged in multiple columns disposed in multiple spiral or helical paths 60 that extend about a portion of the longitudinal axis XX of the core 30. None of the spiral/helical paths intersect. As illustrated in FIG. 4, the upper most bristle 20a in the twisted portion 50 is offset from the lower most bristle 20b in the twisted portion 50 by about 180 degrees.

(18) In the illustrated embodiment, the core 30 also includes an untwisted portion 40 in which the core 30 is not twisted and the bristles 20 are disposed in multiple straight paths that extend generally parallel to the longitudinal axis XX of the core 30. The opposite end of the core 30 may optionally include a stem 70. The stem 70 facilitates connection of the cosmetic brush to a handle or the like (not shown).

(19) The view presented in FIG. 3 provides a view of the bristles 20 as randomized in the twisted portion 50. The view presented in FIG. 4 provides a view of the bristles 20 as disposed in multiple spiral or helical paths that extend about a portion of the longitudinal axis XX of the core 30. As such, it can be said that the bristles 20 have an organized randomness.

(20) Referring to FIGS. 5 and 6, a cosmetic brush 10 in accordance with another exemplary embodiment of the invention will be described. The brush 10 includes a plurality of polymer bristles 20 that extend from a polymer core 30 in a radial direction. In this embodiment, the core 30 includes a twisted portion 50 having a twist angle of approximately 270 degrees. Bristles 20 in the twisted portion 50 are arranged in multiple columns disposed in multiple spiral or helical paths 60 that extend about a portion of the longitudinal axis XX of the core 30. None of the spiral/helical paths intersect. As illustrated in FIG. 6, the upper most bristle 20a in the twisted portion 50 is offset from the lower most bristle 20b in the twisted portion 50 by about 270 degrees.

(21) In the illustrated embodiment, the core 30 also includes an untwisted portion 40 in which the core 30 is not twisted and the bristles 20 are disposed in multiple straight paths that extend generally parallel to the longitudinal axis XX of the core 30. The opposite end of the core 30 may optionally include a stem 70. The stem 70 facilitates connection of the cosmetic brush to a handle or the like (not shown).

(22) The view presented in FIG. 5 provides a view of the bristles 20 as randomized in the twisted portion 50. The view presented in FIG. 6 provides a view of the bristles 20 as disposed in multiple spiral or helical paths that extend about a portion of the longitudinal axis XX of the core 30. As such, it can be said that the bristles 20 have an organized randomness.

(23) Referring to FIG. 7, a cosmetic brush 10 in accordance with another exemplary embodiment of the invention will be described. The brush 10 includes a plurality of polymer bristles 20 that extend from a polymer core 30 in a radial direction. In this embodiment, the core 30 includes a twisted portion 50 having a twist angle of 360 degrees. Bristles 20 in the twisted portion 50 are arranged in multiple columns disposed in multiple spiral or helical paths 60 that extend about a portion of the longitudinal axis XX of the core 30. None of the spiral/helical paths intersect. As illustrated in FIG. 7, the upper most bristle 20a in the twisted portion 50 is offset from the lower most bristle 20b in the twisted portion 50 by about 360 degrees.

(24) In the illustrated embodiment, the core 30 also includes an untwisted portion 40 in which the core 30 is not twisted and the bristles 20 are disposed in multiple straight paths that extend generally parallel to the longitudinal axis XX of the core 30. The opposite end of the core 30 may optionally include a stem 70. The stem 70 facilitates connection of the cosmetic brush to a handle or the like (not shown).

(25) The view presented in FIG. 7 provides a view of the bristles 20 as disposed in multiple spiral or helical paths 60 that extend about a portion of the longitudinal axis XX of the core 30. Again, the bristles 20 have an organized randomness.

(26) While this invention has been described with an emphasis upon preferred embodiments, it will be obvious to those of ordinary skill in the art that variations in the preferred compositions and methods can be used and that it is intended that the invention can be practiced otherwise than as specifically described herein. Accordingly, this invention includes all modifications encompassed within the spirit and scope of the invention as defined by the claims that follow.