Stopping static to improve film November 1st 2008 Static is a problem in film
production and high static
charges can be generated,
particularly at the stretching
and winding stages. This
was the problem
encountered by the Dupont
Teijin Films Foshan, China,
where a range of PET and
PEN polyester films are
made. As well as unpleasant
shocks to operators, static
attracts dust that in turn
leads to contaminated stock
and the resultant poor
quality wound reels may
cause feed problems.
A cost-effective solution
was the installation of a
Meech Model 915 AC static
elimination system that
comprises a static
elimination bar powered by
a Meech 904 power unit. It
provides intense ion
production and has fast
decay times which means it
is effective at fast speeds. It
can be fitted at distances to
150mm and has a slim
profile.
On one machine where
the static elimination bar
could not be installed within
150mm of the web, a Meech
model 976 Pulsed DC bar
with air assist was installed
and provides long range
ionisation to 600mm. The
emitter pin assemblies are
easily removable so
maintenance can be carried
out quickly and easily. More articles from Meech International Ltd: |