Patent ID: 6277238
Filing Date: 2001-08-21
Classification: B29C

Abstract:
Pultrusion apparatus comprisinga supply device with an oven;a matrix including a polymer embedded between fibers for supply by the supply device through the oven;a draw nozzle, the nozzle having a continuously narrowing cross-section in a shape imparting region, wherein the draw nozzle is assembled from first and second relatively movable parts which between them define the cross-section, one of the parts being movable; and at least one drive for transversely moving the movable part in a parallel displacement or a pivotal movement perpendicular to the draw direction for increasing or decreasing the cross-section of the nozzle;the continuously narrowing cross-section in a shape imparting region continuously filled with matrix polymer and fiber to produce a surplus;a draw off device for continuously passing the material from the supply device and oven through the draw nozzle without the drawing off interruption;the draw off device providing a velocity to the matrix including the polymer embedded between fibers to enable on time average no flow back of polymer surplus relative to the nozzle during pultrusion.