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CHARGEMASTER VCM 5201067 Rev. B
Option 1 – Charging Bar with Grounded Surface
This application illustrates the use of a
TETRA bar facing a grounded surface.
The material to be charged should rest
on the grounded surface. In the example
shown in Figure 4, the charging bar is
located facing an empty core in a roll-
to-roll changeover application. The
empty core is mounted on a grounded
metal shaft. The plastic film is between
the charging bar and empty core. The
negative ions created by the charging
bar are driven towards the grounded
metal shaft by the electric field between
the charging bar and grounded shaft.
The plastic film intercepts the ions and becomes electrostatically charged in the
process. The electrostatic charge in the plastic film causes adhesion of the film
to the empty core.
The charging bar may also be located facing a production fixture that moves
beneath the charging bar (or the charging bar could also move over the fixture).
The materials to be pinned together are
positioned on the fixture (Figure 5). As
the fixture moves beneath the charging
bar, the negative ions created by the
charging bar are driven towards the
grounded metal fixture by the electric
field between the charging bar and fixture.
The top material intercepts the ions and
becomes electrostatically charged in the
process. The electrostatic charge in the
top material causes adhesion of the top
material to the lower material and to the
fixture. This bar arrangement emulates an interleaving application where paper
or film is pinned to metal prior to cutting and stacking.
Film
Shaft
Cardboard
Core
Figure 4
