Sometimes complete reversals of material positions have been observed. The most common example of tribocharging is a person walking across a floor. To help further illustrate the triboelectric generation process, we can use a pair of ESD Training Paddles, one made from aluminum and the other from acrylic. You can see from the triboseries chart, that the acrylic paddle will acquire a more negative charge and the aluminum paddle will acquire a more positive charge when brought into contact and separated. There are several experiments you can perform to demonstrate triboelectric charging and electric fields all found within our Training Paddles Tech Brief PS-2029 .
Static charges are a real problem in the printing industry.
Paper picks up a charge when run through the press. When the same paper is rerun through the press, it has enough charge in the paper to make it try to stick together creating a real feed problem. The module construction is polyimide MLBs laminated to an aluminum frame. The frames are tied to chassis ground and the neon is always in contact with chassis ground. The ESD Association has approved and published a new standard covering the development of an ESD control program.