Plasmac, a manufacturer of
recycling extruders for the
plastics industry, especially
film producers, describes
fitting metal detectors to its
range of off-line extruders as:
“The best value insurance
against the risk of input
contamination damaging the
extruder SST screw and other
internal components.” The
in-line extruders face a very
small risk and do not usually
need metal protectors.

Plasmac has worked with S
+ S inspection for several
years and advises its
customers to have S+S DLS
metal detectors fitted to its
off-line recycling extruders.

Plasmac’s Mark Richardson
says the cost of fitting metal
detectors is relatively low
compared with the cost of
machine damage and
production downtime that
may be caused by even a
small piece of metal. This
advice is occasionally rejected
where cost is a major factor.

However the company says
not fitting the metal detector
may void much of the
machine warranty.

Plasmac finds S+S metal
detectors simple to interface
with its control systems.