Patent ID: 7226555
Filing Date: 2007-06-05
Classification: B29C,B29L

Abstract:
1. A method of production of a bristle product comprising a carrier body having monofilament bristles using a mold tool, the mold tool having channels for shaping and fixing the bristles to the carrier body, wherein the carrier body serves to permit a user to move the bristles in use, wherein, during injection or pressure molding, melt is introduced into the channels under pressure for forming the bristles, the method comprising the steps of: a) prefabricating the carrier body to fit to edges of the mold tool; b) disposing the carrier body in the mold tool upstream of the channels in such a fashion that a free cross-section of the channels is fully covered; and c) introducing, following step b), the melt with a sufficiently high mold pressure as to shoot-through the carrier body in a vicinity of the free cross-section of the channels thereby displacing carrier material, with the melt subsequently filling the channels, wherein the carrier body acts as a pressure holding barrier during injection molding of the melt up to a point in time at which penetration of the melt through the carrier body begins with the melt subsequently penetrating explosively into the channels to form the monofilament bristles and evenly displace carrier material around a foot of the bristles to fix the carrier body to the monofilaments.