Like many injection
moulders, Barkley Plastics
has been using cavity pressure
monitoring for several years
to try to identify out of spec
parts before they get into the
delivery system. However,
two of the old systems have
now been replaced with the
latest 4-channel CoMo
Injection systems from
Kistler Instruments.

According to Barkley’s
business development
manager, Matthew Powell, by
monitoring all aspects of the
cavity pressure curve during
the moulding process, the
CoMo system ensures that all
out of spec parts are rejected
quickly and reliably. “Because
the CoMo system automatic –
ally provides perfect rejection
of faulty parts, it is possible to
run the moulding machines
in the dark with little or no
supervision,” he says.

In addition to monitoring
the process, the CoMo system
can be used to balance the
hot runners, which Powell
describes as a “massive
bonus” that is essential to
main taining consistently high
quality parts.