Patent ID: 8534769

Claim:
A method for producing toothbrushes covered with bristles in an anchor-free manner using a bristle covering machine with a tool having an upper side, a bottom side and an accommodating aperture in which a pin is slideably guided, the method comprising: providing bristles which are chemically tapered at one end, the bristles having a tapered portion which tapers to a point, a cylindrical portion which adjoins the tapered portion, and a blunt end; mechanically processing points of the chemically tapered bristles, after the step of providing, the bristles, whereby etching-process filaments or residual filaments of the chemically tapered bristles are removed; introducing, after the step of mechanically processing the points, from the upper side, a cluster of the chemically tapered and mechanically processed bristles into the accommodating aperture of the tool such that the bristles are received in the accommodating aperture and the points of the bristles are brought into abutment with a front face of the pin; and moving the pin to push the bristles in an upward direction of the tool for further processing, whereby the front face of the pin acts on the points of the chemically tapered and mechanically processed bristles.