Bristles, e.g. an for electric tooth brush head, are formed by producing coupling or drive section and bristle bundle holding section

摘要

The method comprises forming a brush coupling or drive section (4), made of a primary material during one stage and a bristle bundle holder section (5) made of a secondary material, during a second stage. The method comprises forming a brush coupling or drive section (4), made of a primary material during one stage and a bristle bundle holder section (5) made of a secondary material, during a second stage. When the holder is being molded, the bristle bundle (14) extends into the mould chamber (12) and both sections are joined. The coupling is injection molded at a higher pressure than the bristle bundle. The connection side is provided with a profiled section. The bristle bundle is placed in receiving holes (13) and bristles at the inner end are melted and a flat anchoring head is formed.