A new twin-screw side devolatilization device from Coperion Corp., Ramsey, N.J., costs about 40% less than a traditional vent-port stuffer, which it replaces.

A new twin-screw side devolatilization device from Coperion Corp., Ramsey, N.J., costs about 40% less than a traditional vent-port stuffer, which it replaces. Model ZS-EG prevents vent flow during compounding and degassing of highly filled engineering plastics, TPEs, and other viscous compounds. Instead of mounting over the vent like a vent-port stuffer, it mounts at the side of the barrel and was designed to use the same standard chassis and screws as Coperion’s ZS-B twin-screw side feeder. The side-mounted device is supported on a roll stand with quick disconnects from the gearbox using C-clamps, so it’s easily rolled to other machines or positions.