process for the production of borstenwaren through the spritzgiessens

摘要

PCT No. PCT/EP95/01408 Sec. 371 Date Aug. 30, 1996 Sec. 102(e) Date Aug. 30, 1996 PCT Filed Apr. 14, 1995 PCT Pub. No. WO95/30350 PCT Pub. Date Nov. 16, 1995The invention is a process for the production of brushware having a plastic bristle carrier and at least one bristle bundle fixed to the carrier and constituted of stretched, stabilized plastic monofilaments. An open injection mould is provided defining a cavity in which the bristle carrier is moulded with one part of the mould having a channel in which at least one bristle bundle is guided with an end of each bristle bundle projecting beyond a mouth of the channel and being melted to a thickening having a cross section greater than a cross section of the channel and the bundle which anchors the bundle to the carrier with the thickening being spaced a distance from the mouth of the channel. The injection mould is closed to define the cavity and a plastic melt is injected into the cavity with the distance of the thickening of the at least one bristle bundle from the mouth of the channel permitting air and any degassing products from the plastic melt to be removed through the channel and being of sufficient length so that a length of thermally weakened monofilaments produced by a molecular reorientation during melting of the end of the at least one bristle bundle to form the thickening area surrounded by the plastic melt without the plastic melt penetrating the channel. The at least one bundle is positioned and fixed in the channel so that the distance, depending upon a diameter of the monofilaments, is between 0.1 mm and 2.O mm.