Providing stabilized lengths of extruded strips

摘要

A method is disclosed of forming an intermittent stabilized length of a coextruded trim strip product. The method includes coextruding two strips of a thermoplastic material around intermittent sections 46 of a stabilizing insert by a split extrusion die and forming rolls 34, 36. A cutter 50 cuts the trim strip product between the intermittent stabilizing sections 48 so as to define trim strip products 52 having ends 56 without stabilizing inserts. In one embodiment each thermoplastic strip 26/28 is extruded by a separate extruder 22/24 whilst a continuous length of insert 40 is intermittently cut before insertion into the gap of the rolls between the extruded strips 28, 30. Alternatively precut inserts may be used. The insert may be aluminium, steel, etc.