Patent ID: 6589377
Filing Date: 2003-07-08
Classification: B29C

Abstract:
A method for the manufacture of profiles of fiber-plastic compound materials including the steps of:providing a supply of fibers (41) impregnated with a flowable plastic (42); providing an oven (21) for heating the fibers (41) and impregnated flowable plastic (42); providing at least one drawing nozzle (10) having a continuously narrowing cross-section in a shape-imparting region, the drawing nozzle having first and second relatively movable parts which define between them the continuously narrowing cross-section, one of the relatively movable parts being movable to vary the continuously narrowing cross-section of the at least one drawing nozzle (10); providing a draw-off device for continuously passing the material from the supply of fibers (41) impregnated with flowable plastic (42) through the oven (21) and through the drawing nozzle (10) without interrupting the drawing off; providing at least one drive for transversely moving perpendicular to the draw direction of the fibers (41) the movable part of the at least one drawing nozzle (10) relative to the other part of the at least one drawing nozzle (10); and forming the fibers (41) and flowable plastic (42) in the shape-imparting region of the at least one drawing nozzle (10) during the drawing off by operating the at least one drive for the transverse movement perpendicular to the draw direction of the fibers (41) impregnated with flowable plastic (42) by increasing and decreasing the cross-sectional surface of the at least one drawing nozzle (10) at a frequency less than 1 kHz.