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. The polymer bristles have grooves and/or projections on their surfaces for holding cosmetic liquid for the cosmetic brush.

What is claimed is: 
     
         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 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, and   wherein the bristles have a plurality of grooves on their surfaces for holding cosmetic liquid for the cosmetic brush.   
     
     
         2 . The cosmetic brush according to  claim 1 , wherein the bristles have cross-sectional shapes of any regular or irregular polygons. 
     
     
         3 . The cosmetic brush according to  claim 1 , wherein shapes and dimensions of an inner most portion of the bristles and an outermost portion of the bristles are different, and
 wherein the inner most portion of the bristles is a portion that is closest to the core, and the outer most portion of the bristles is a portion that is farthest to the core with respect to the longitudinal axis of the core.   
     
     
         4 . The cosmetic brush according to  claim 1 , wherein the bristles have a plurality of projections on their surfaces for holding the cosmetic liquid for the cosmetic brush. 
     
     
         5 . The cosmetic brush according to  claim 1 , wherein the bristles further comprise a plurality of branches of any shapes and dimensions. 
     
     
         6 . The cosmetic brush according to  claim 1 , wherein the bristles are formed with a regular and alternative arrangement of a first type of bristles and a second type of bristles throughout the core, wherein
 the first type of bristles is thicker than the second type of bristles.   
     
     
         7 . The cosmetic brush according to  claim 1 , wherein the bristles are formed with an irregular arrangement of a first type of bristles and a second type of bristles throughout the core, wherein
 the first type of bristles is thicker than the second type of bristles.   
     
     
         8 . The cosmetic brush according to  claim 1 , wherein the bristles have curvy or zigzag lines/shapes such that they have a shape like ramen noodles regardless of their thickness. 
     
     
         9 . The cosmetic brush according to  claim 1 , wherein the plurality of grooves are formed uniformly on surfaces of the bristles. 
     
     
         10 . The cosmetic brush according to  claim 1 , wherein the plurality of grooves are formed randomly on surfaces of the bristles. 
     
     
         11 . The cosmetic brush according to  claim 4 , wherein the plurality of projections are formed uniformly on surfaces of the bristles. 
     
     
         12 . The cosmetic brush according to  claim 4 , wherein the plurality of projections are formed randomly on surfaces of the bristles.