SEARCH Articles Figures Tables Joining self-tapping screw Screw self-wiping Self tapping screws Self-cleaning twin-screw Self-cleaning twin-screw extruders Self-locking screws and bolts Self-wiping co-rotating twin screw extruder Self-wiping co-rotating twin screw extruders Self-wiping corotating twin-screw extruders Twin screw extruders self-wiping