Toothbrush bristles having tip with double structure and toothbrush comprising same

Abstract

The present invention provides a toothbrush bristle comprising: a core area including a rubber elastic body; and a clad area which is formed around the circumference of the core area, and which includes a resin that is harder than the rubber elastic body, wherein a tip from which the core area is exposed is formed in an end portion thereof. Thus, since the tip is formed in the end portion which comes in contact with the gum such that the rubber elastic body is exposed therefrom, the invention provides the advantage of softly massaging the gums while brushing the teeth.

1 . A toothbrush bristle comprising:
 a core area which is made of silicone; and   a clad area which is formed around the core area, and made of resin having greater rigidity than the silicone.   
     
     
         2 . The toothbrush bristle of  claim 1 , wherein a tip where the core area is exposed is formed at an end of the toothbrush bristle. 
     
     
         3 . The toothbrush bristle of  claim 2 , wherein an end portion of the clad area is formed to be inclined based on a centerline of the core area. 
     
     
         4 . The toothbrush bristle of  claim 2 , wherein a stepped area is formed at an end portion of the clad area. 
     
     
         5 . The toothbrush bristle of  claim 1 , wherein the resin is polyester. 
     
     
         6 . A toothbrush comprising the toothbrush bristles according to  claim 1 . 
     
     
         7 . A toothbrush bristle comprising:
 a clad area which is made of silicone; and   a core area which is formed inside the clad area, and made of resin having greater rigidity than the silicone.   
     
     
         8 . The toothbrush bristle of  claim 7 , wherein the resin is any one of polyester, nylon, polypropylene, and polyethylene. 
     
     
         9 . A toothbrush comprising the toothbrush bristles according to  claim 7 . 
     
     
         10 . A toothbrush bristle comprising:
 a core area which is made of a first substance including a rubber elastic body; and   a clad area which is formed around the core area, and made of a second substance including resin having greater rigidity than the rubber elastic body,   wherein a tip where the core area is exposed is formed at an end of the toothbrush bristle.   
     
     
         11 . The toothbrush bristle of  claim 10 , wherein the first substance is a material made by synthesizing any one of silicone, polyester, polyethylene, and polypropylene with the rubber elastic body. 
     
     
         12 . The toothbrush bristle of  claim 10 , wherein a length of the tip is within 0.01 mm to 6 mm. 
     
     
         13 . The toothbrush bristle of  claim 10 , wherein an end of the clad area is formed to be inclined based on a centerline of the core area. 
     
     
         14 . The toothbrush bristle of  claim 10 , wherein the resin is any one of polyester and nylon. 
     
     
         15 . A toothbrush comprising the toothbrush bristles according to  claim 10 .