7 MACHINES FOR PROCESSING PLASTICS, NAMELY, EXTRUSION MACHINES, EXTRUDERS, WORM EXTRUDERS; ELECTRIC AND HYDRAULIC DRIVES FOR WORM EXTRUDERS, BARREL EXTRUDERS; EXTRUSION MACHINES, NAMELY, EXTRUSION MACHINES COMPRISING FEEDING EQUIPMENT FOR FEEDING IN PLASTICS, NAMELY, FEEDING IN DUROPLASTICS; EXTRUDERS, MOLDING APPLIANCES, NAMELY, PIPE AND PROFILE MOLDING APPLIANCES; DIMENSIONAL CHANGE APPLIANCES, NAMELY, EXTRACTION APPLIANCES; SEPARATING APPLIANCES AND CUTTING APPLIANCES FOR PRODUCING PIPES, PROFILES, PLATES AND GRANULATES MADE OF PLASTIC OR MADE OF PLASTIC MIXED WITH OTHER SUBSTANCES