1. Advertising materials of Berstorff
2. Advertising materials of Cincinnati Extrusion
3. Investigation of ultra-high speed extruder based on entirely new design concept;Aida;Japan Plastics,1975
4. New style extruder has a cone, not a screw;Anon;Plastic Technology,1998
5. Screw design and optimization of grooved-barrel extruders;Anon,1997