Process and apparatus for production of bristle products

A process for the production of bristle products from plastic, said products comprising a bristle carrier and bristles whose utilization-side ends are uniformly rounded and lie in a contour deviating from the bristle-side surface of the bristle carrier, said process comprising the steps of:

• clamping said bristles while their utilization-side ends are in a flat plane located a predetermined distance from the means used to clamp said bristles;
• substantially uniformly rounding the utilization-side ends of said bristles while they are maintained in said flat plane;
• contouring the utilization-side ends of said bristles by axial displacement of said bristles after they are unclamped by means of a negative form corresponding to said contour;
• and finally fastening the opposite ends of said bristles to said bristle carrier.

Apparatus for the production of bristle products from plastic, said bristle products comprising a bristle carrier and bristles whose utilization-side ends are substantially uniformly rounded and located in a contour differing from that of the fastening-side surface of said bristle carrier, said apparatus comprising:

• a holder for positioning said bristles at a machining station, said holder including clamping means by which said bristles, alone or in groups, can be clamped at said machining station at a predetermined distance from their utilization-side ends which lie in a flat plane;
• grinding means at said machining station for rounding the utilization-side ends of said bristles;
• means for fastening the opposite ends of said bristles to said bristle carrier;
• means for bringing said holder into the work location with said machining station;
• and means for bringing said holder into the work location with said fastening means after loosening said clamping means and axially displacing said bristles to form said contour at their utilization-side ends.