Metal plate
Charged plastic panel
The plastic panel is apparently neutralized,
causing the potential to drop!
In this situation, the charges on the
plastic panel cannot be effectively
eliminated, even when an ionizer is
used.
Ground
When it is lifted from the metal plate,
the potential rises sharply!
During the process of lifting the plastic
panel away from the metal plate,
ionized air is delivered to the charged
surface of the plastic panel.
Ground
Ionizer
Static charges should be
eliminated during the process
of lifted away from the metal plate!
26
Q
To be effective, in which process should the ionizer be installed?
A
As shown in Figure 1, when a charged plastic panel is placed on top of a grounded metal plate, the
charge on the plastic panel surface is apparently neutralized by the differing charge induced from
the adjacent metal plate surface. In addition, the potential in the plastic panel becomes virtually
equal to the ground surface.
The situation when the plastic panel is lifted away from the metal plate is shown in Figure 2. When the
plastic panel is separated from the metal plate, its potential rises sharply. If an ionizer was being used to
perform efficient static charge removal, where the static charge is being eliminated is the key point.
(Figure 1)
(Figure 2)
When using an ionizer for eliminating static charges, the key point is choosing
which elimination process to use.