Importance

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Abstract

A method for producing fiber-reinforced polymer compositions and a plasticating extruder for carrying out the method. The method includes passing the fiber strand along at least one coating nozzle into a feed opening; winding the fiber strand onto and around at least one extruder shaft; drawing the fiber strand into barrel bores of a screw barrel; applying a liquid polymer onto a first flat side of the fiber strand from the first coating nozzle; pressing a second side of the fiber strand into a liquid polymer film that was already applied on the screw shaft; and feeding the polymer impregnated fiber strand into screw barrels in a discharge and conveying zone. The plasticating extruder has a drawing-in and impregnating zone and a discharge and conveying zone. The plasticating extruder has a heater. In the drawing-in and impregnating zone, there are a first barrel; a polymer feed including at least one coating nozzle; first barrel bores in the first barrel; rotationally driven first extruder shafts in the first barrel bores; and a feed opening in the first barrel for introducing a fiber strand into the first barrel bores. In the discharge and conveying zone, there are a second barrel; a cutting edge at an entrance to the second barrel; second barrel bores in the second barrel; and rotationally driven second extruder shafts in the second barrel bores.

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First Claim