Packaging film is unwound and formed into a tubular configuration, as the product flows on a belt into the tube of film. The film is overlapped either on top or bottom side. The so-called overlap is required to fix the two ends of the film tight together. Heat welding or electrostatic charge is applied, to prevent the film from tearing in the shrink tunnel.
The electrostatic electrode uses less energy than the heat welding system. It also requires no maintenance and the final product is easier for the end-user to unwrap.
Simco-Ion Europe offers various electrodes, including the 5 Point, Linear 6 Point and the Pinner Claw, specifically for spotcharging small surfaces. These electrodes are also ideal for edge charging in cast-film extrusion processes. The material applied permits high temperature use.
Each individual emitter pin of this anti-static bar is coupled capacitively to the high voltage. You will therefore not get an electrical shock when the emitter pin is accidentally touched. Another advantage is that the bar continues to function properly when a number of emitter pins are short-circuited, for instance due to heavy fouling.
The high voltage at both emitter points of the HE air nozzle is current limited. Being installed outside the air flow, the high-voltage points are hardly subject to fouling, if at all. The single point nozzle blowoff force is high at a relatively low air consumption.