Twisted brush with parallel bristles at the distal end

Abstract

A wire core brush composed of a core comprising at least two wires twisted together between which are held bristle-forming elements, which form bristles that protrude from the core, characterized in that the wire core brush has been produced in such a way that after the twisting, it has first bristles protruding from the core essentially in the radial direction with a first length and also has second bristles protruding from the core essentially in the radial direction with a second length that is greater than the first length so that the second bristles protrude beyond the first bristles essentially in the radial direction; after this, the brush has been pulled through a hot tube whose inner diameter and temperature are selected and matched to the residence time of the brush in the tube so that a section of the second bristles is permanently oriented essentially parallel to the longitudinal axis of the wire core.

1 . A wire core brush comprising:
 a core comprising at least two wires twisted together; and   a plurality of bristle-forming elements held between the at least two wires, the plurality of bristle-forming elements forming bristles that protrude from the core;   wherein the wire core brush has been produced in such a way that after twisting the at least two wires, the wire core brush has first bristles protruding from the core essentially in a radial direction with a first length and the wire core brush also has second bristles protruding from the core essentially in the radial direction with a second length that is greater than the first length so that the second bristles protrude beyond the first bristles essentially in the radial direction; and after the twisting, the brush has been pulled through a hot tube whose inner diameter and temperature are selected and matched to a residence time of the brush in the tube so that a section of the second bristles is permanently oriented essentially parallel to a longitudinal axis of the wire core.   
     
     
         2 . A wire core brush comprising:
 a core comprising at least two wires twisted together; and   a plurality of bristle-forming elements held between the at least two wires, the plurality of bristle-forming elements forming bristles that protrude from the core;   wherein some of the bristles have two sections, namely a first section that protrudes from the core at an angle of 50° to 90° and a second section that extends essentially parallel to a longitudinal axis (L) of the core;   the first and second sections of the bristles are connected to each other via a sharply curved intermediate section within which a longitudinal axis of the bristle changes direction by an angle β of 40° to 90° and whose length is less than ⅕ of a total length of the bristle between a root end and an end oriented away from the root end.   
     
     
         3 . The wire core brush according to  claim 1 , wherein the inner diameter and temperature of the tube are selected and matched to the residence time of the brush in the tube so that the first bristles are not deformed at all or are not deformed significantly. 
     
     
         4 . The wire core brush according to  claim 1 , wherein the second bristles, which have a bristle section ( 7 ) that extends essentially parallel to the longitudinal axis of the core, form an outermost distal fifth of the bristle set. 
     
     
         5 . The wire core brush according to  claim 1 , wherein the second bristles, which have a bristle section that extends essentially parallel to the longitudinal axis of the core, protrude beyond a remainder of the bristle set in a direction of the longitudinal axis of the core. 
     
     
         6 . The wire core brush according to  claim 1 , wherein the bristles have a diameter of 0.08 mm to 0.3 mm. 
     
     
         7 . The wire core brush according to  claim 1 , wherein each of the wires that is twisted into the wire core has a diameter of between 0.5 and 1.1 mm before the twisting. 
     
     
         8 . The wire core brush according to  claim 1 , wherein a bristle set comprising the bristles is composed of 15 to 50 filaments per turn. 
     
     
         9 . A method for manufacturing a brush comprising:
 manufacturing a wire core brush with a bristle set composed of first and second bristles that are essentially of different lengths;   locally heating the second bristles in such a way that the second bristles become plastically deformable in a heated region; and   bending sections of the second bristles that extend beyond an imaginary envelope curve into a position in which a longitudinal axis of these sections extends essentially parallel to a longitudinal axis of a wire core.   
     
     
         10 . The wire core brush according to  claim 2 , wherein the bristles have a diameter of 0.08 mm to 0.3 mm. 
     
     
         11 . The wire core brush according to  claim 2 , wherein each of the wires that is twisted into the wire core has a diameter of between 0.5 and 1.1 mm before the twisting. 
     
     
         12 . The wire core brush according to  claim 2 , wherein a bristle set comprising the bristles is composed of 15 to 50 filaments per turn.