Abstract: A device for treatment of formed plastic articles using a corona discharge and an air flow which is comprised of a pair of spaced apart hollow air flow housings, each defining a plurality of air flow passageways therein, a pair of electrode mounting plates adapted to house a plurality of spaced, staggered electrode pairs, one plate connected to each said housing, a treatment zone created by and between said mounting plates for the passage of work pieces therethrough, together with any suitable source of high voltage electricity to energize said electrodes and air induction and retrieval means for providing an air flow in said treatment zone. In a first embodiment of the invention, both housings are pressurized with a temperature controlled air flow which in turn passes through said air flow passageways through the mounting plates and around the electrodes, into the treatment zone. The air flow is retrieved by an evacuation apparatus located on the floor of the device directly below the treatment zone.