Method for Manufacturing Bristles on Toothbrush and Toothbrush Using Same

Abstract

A method for manufacturing bristles on a toothbrush and a toothbrush using the same are provided, in which the bristles on a toothbrush have a core-sheath double structure and various cross-sectional shapes, have uneven portions formed on a surface thereof by a tapering process while containing inorganic particles, and include inorganic or organic antimicrobial materials.

1 . A method for manufacturing bristles on a toothbrush, the method comprising:
 a) manufacturing a core-sheath type filament composed of a core part and a sheath part;   b) cutting the filament;   c) immersing one end of the filament in step b) in a processing tank filled with a tapering solution; and   d) immersing the other end of the filament in step c) in a processing tank filled with an alkaline solution.   
     
     
         2 . The method of  claim 1 , wherein the bristles on the toothbrush have a cross-sectional shape comprising at least one of the following: a dumbbell shape, a cross shape, a disk shape, a chevron shape, a triangular shape, a tetragonal shape, a trapezoidal shape, and a corn shape. 
     
     
         3 . The method of  claim 1 , wherein the bristles on the toothbrush have a shape comprising at least one of the following: a circular shape, a dumbbell shape, a cross shape, a disk shape, a chevron shape, a triangular shape, a tetragonal shape, a trapezoidal shape, and a corn shape. 
     
     
         4 . The method of  claim 1 , wherein the core part or the sheath part is made of a polymer resin comprising at least one of the following: polyester, a thermoplastic rubber, an elastomer, silicone, BPA-free bio plastic, polyoxymethylene, nylon 4, nylon 6, nylon 7, nylon 9, nylon 11, nylon 12, nylon 4,6, nylon 6,6, nylon 6,10, nylon 6,12, and a polyester copolymer polymer resin. 
     
     
         5 . The method of  claim 1 , wherein the core part, the sheath part, or both of the core part and the sheath part further contain an additive including organic particles, inorganic particles, or a mixture thereof. 
     
     
         6 . The method of  claim 5 , wherein the organic particles comprise any one or at least two selected from green tea extracts, barley sprout extracts, ginkgo biloba extracts, pine needle extracts, bamboo extracts, activated carbon, xylitol, and a water soluble polymer, and the inorganic particles are any one or at least two selected from zeolite, silica-alumina, calcium phosphate, zirconium phosphate, calcium carbonate, silica gel, titanium dioxide, zinc oxide, zirconium carbide, magnesium oxide, silicon dioxide, and aluminum oxide. 
     
     
         7 . The method of  claim 6 , wherein any one or at least two metals selected from gold, silver, platinum, and copper is further supported on the inorganic particles. 
     
     
         8 . The method of  claim 5 , wherein the additive has an average particle size of 0.1 to 10 μm. 
     
     
         9 . The method of  claim 1 , wherein an antimicrobial material is further added at a content of 0.1 to 10 parts by weight based on 100 parts by weight of the core part, the sheath part, or the core part and the sheath part. 
     
     
         10 . The method of  claim 9 , wherein the antimicrobial material is a guanidine based compound or silver ion powder. 
     
     
         11 . A toothbrush using bristles on a toothbrush manufactured by the method of  claim 1 .