Brush, particularly toohbrush and method for the manufacture thereof

Abstract

Brush, particularly toothbrush and method for the manufacture thereof The present invention relates to a brush, particularly a toothbrush, comprising a brush head carrying bundles of bristles, and a handle with an injection-molded basic body which comprises a fastening section extending up to the brush head. To provide a brush that meets the hygienic standards as much as possible and can be manufactured in an easy way, it is suggested according to the invention that the bundles of bristles should be bonded to the basic body via a casting compound. Furthermore, the present invention provides a method for manufacturing a brush, particularly a toothbrush, comprising a brush head carrying bundles of bristles, and a handle, wherein the bundles of bristles are bonded to a basic body manufactured by injection molding from a thermoplastic after demolding of said basic body, and wherein the bond between the bundles of bristles and the basic body is formed by way of a casting compound that after its solidification is fastened to the basic body.

1 . A brush comprising a brush head carrying bundles of bristles, and a handle with an injection-molded basic body; the handle comprising a fastening section extending up to the brush head, through which the bundles of bristles are bonded to the basic body, with a casting compound ( 8 ). 
   
   
       2 . The brush according to  claim 1 , wherein the casting compound is positioned at least at the height of the ends of the bundles of bristles at the fastening side. 
   
   
       3 . The brush according to  claim 2 , wherein the casting compound seals the ends of the bundles of bristles at the fastening side. 
   
   
       4 . The brush according to  claim 1 , wherein the casting compound forms a surface of the brush head which is penetrated by the bundles of bristles. 
   
   
       5 . The brush according to  claim 1 , wherein the casting compound forms the bottom surface of the brush head which faces away from the surface penetrated by the bundles of bristles. 
   
   
       6 . The brush according to  claim 1 , wherein the casting compound is provided between a bristle carrier carrying the bundles of bristles and the basic body. 
   
   
       7 . The brush according to  claim 1 , wherein the casting compound forms the outer surface, preferably the rim area of the brush head, at least in part. 
   
   
       8 . The brush according to  claim 1 , wherein the fastening section is formed in the manner of a brush head tray, and that the bundles of bristles are bonded to the basic body by way of the casting compound filled into the brush head tray. 
   
   
       9 . The brush according to  claim 8 , wherein the casting compound is filled substantially up to the rim of the brush head tray. 
   
   
       10 . The brush according to  claim 1 , wherein the casting compound is member selected from the group consisting of a hot melt adhesive, an oligomer system, a PUR system. 
   
   
       11 . The brush according to  claim 8 , wherein a plurality of bundles of bristles are fastened to a bristle carrier having a surface which is penetrated by the bundles of bristles and is arranged substantially flush with the rim of the brush head tray. 
   
   
       12 . The brush according to  claim 11 , wherein the bristle carrier is configured as a plate-shaped component the contour of which is matched to the contour of the rim of the brush head tray. 
   
   
       13 . The brush according to  claim 4 , wherein the ends of the bundles of bristles at the fastening side are held in the casting compound and the casting compound forms the surface of the bristle head that is penetrated by the bundles of bristles. 
   
   
       14 . The brush according to  claim 6 , wherein the casting compound has solidified flush with the surface of the bristle carrier penetrated by the bundles of bristles. 
   
   
       15 . The brush according to  claim 8 , wherein the brush head tray is completely filled with the casting compound. 
   
   
       16 . A method for manufacturing a brush having a brush head carrying bundles of bristles, and a handle, in which the bundles of bristles are bonded to a basic body manufactured by injection molding from a thermoplastic after demolding of said basic body, which comprises forming the bond between the bundles of bristles and the basic body with a casting compound that is fastened to the basic body after solidification of the casting compound. 
   
   
       17 . The method according to  claim 16 , which comprises injection molding the basic body with a brush head tray for accommodating the bundles of bristles, introducing the bundles of bristles with their ends at the fastening side into the brush head tray, filling the brush head tray with the casting compound and sealing the ends of the bundles of bristles at the fastening side. 
   
   
       18 . The method according to  claim 17 , which comprises introducing the casting compound into the brush head tray, and introducing the bundles of bristles at the end side of the brush head tray with displacement of the casting compound up to about the height of the rim of the brush head tray. 
   
   
       19 . The method according to  claim 17 , which comprises fastening the bundles of bristles to a bristle carrier penetrated by the bundles of bristles, and introducing the bristle carrier into the brush head tray to such an extent that the casting compound is displaced into a gap between the bristle carrier and the basic body approximately up to the height of the rim of the brush head tray. 
   
   
       20 . The method according to  claim 18 , which comprises fastening the bundles of bristles to a bristle carrier penetrated by the bundles of bristles, and introducing the bristle carrier into the brush head tray to such an extent that the casting compound is displaced into a gap between the bristle carrier and the basic body up to about the height of the rim of the brush head tray. 
   
   
       21 . The method according to  claim 17 , which comprises arranging the individual bundles of bristles in holes of a hole field plate containing a hole field that predetermines the bristle attachment to be formed, sealingly placing the hole field plate on the rim of the brush head tray, and introducing the casting compound into the cavity closed by the hole field plate such that the ends of the bundles of bristles at the fastening side that project into the brush head tray are sealed in the casting compound, and the casting compound solidifies with molding of the surface of the hole field plate. 
   
   
       22 . The method according to  claim 18 , which comprises arranging individual bundles of bristles in holes of a hole field plate having a hole field which predetermines the bristle attachment to be formed, sealingly placing the hole field plate on the rim of the brush head tray, and introducing the casting compound into the cavity closed by the hole field plate such that the ends of the bundles of bristles at the fastening side that project into the brush head tray are sealed in the casting compound, and the casting compound solidifies with molding of the surface of the hole field plate. 
   
   
       23 . The method of  claim 18  wherein the brush comprises a toothbrush. 
   
   
       24 . The brush of  claim 1  comprising a toothbrush.