Electrostatic Spraying Systems air-assisted sprayers produce spray droplets 900 times smaller than those produced by conventional sprayers. The tiny droplets are given an electrical charge that causes a natural force between the spray droplets and a target surface. Most surfaces are either negative or neutral.
Just like the pull of a magnet to a piece of metal the droplets become more strongly attracted to the target as they approach it. The charge on the droplets though small, pulls the spray towards the target at a 75 times the force of gravity.
The spray droplets literally reverse direction and move upwards, against gravity, when passing a target surface. The remarkable phenomenon by which the spray coats the undersides and the backsides of the spray target is known as electrostatic “wraparound.”