Method of manufacture of brush components

Details Method of manufacture of brush components Method of manufacture of brush components

A - Human Necessities

46

D

300/10

A46D 3/00 (2006.01) A46D 1/04 (2006.01)

Patent

CA 1160261

ABSTRACT "METHOD OF MANUFACTURE OF BRUSH COMPONENTS" Methods of manufacturing brush components arc disclosed in which a plurality of predetermined lengths of brush bristle formed of synthetic resinous material are fed from a supply into the nip of at least one pair of endless haul-off belts so that the bristles are arranged substantially uniformly and parallel to each other with their ends in line. In one construction a single pair of haul-off belts having a width which is less than the bristles is used, the bristles projecting beyond the sides of the belts, and the thus formed bristle array is fed into an extruder whereupon a plastics material is extruded over the projecting ends of the bristles to hold them together and/or the ends are fused together, the resultant product, on emerging from the ends of the belts, then being slit centrally to provide two endless components. In another construction, two spaced pairs of belts are used to advance the bristles into an extruder and plastics material is extruded down the centre of the bristles either from each side or in sufficient amounts to penetrate between the bristles completely, whereupon on emerging from the belts the bristles are either folded about the central extrusion through 180°, whereupon the extrusion is allowed to cool, or are slit centrally of the extrusion to provide two components. In all the constructions, the bristles are heated prior to or during the extrusion, and hence soften or are fused together.

359046

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