the invention is addressed to the problem of providing a method whereby a mixing of bulk material containing fibers and plastic granules for the plasticate extrusion of long fiber reinforced thermoplastics will be possible during the melting process with high production outputs and with minimized material content in the extruder system and minimized fiber damage , and to the problem of creating an apparatus with an extruder for the practice of the method , which will have an extruder housing of modified geometry as to the feed opening and the corresponding screw elements , so that the disadvantages described above are avoided .