THERMO Electron Corporation has introduced a new version of its successful PRISM Eurolab XL 16mm twin-screw extruder.
To give the processor even greater flexibility, it is now possible to purchase the standard 25:1 L/D compounder, and, at a later date, to convert to a 40:1 version by the now simple addition of a bolt on the 15:1 L/D barrel extension option.
The longer barrel allows multistage compounding of nano-composites or reactive compounding where long residence times are required.
With a horizontally split design, the extruder can be easily opened by lifting off the top half of the barrel for thorough cleaning, screw configuration changes or dead-stop melt studies.
The upper barrel is assembled from 4:1 L/D segments, which can be easily rearranged to change the position of feeding or venting ports.
The PRISM Eurolab XL is controlled through a new colour touch screen, with enhanced graphics and an advanced PLC with "plug and play" facility recognising when additional ancillary equipment (or the barrel extension) is connected.
The controls allow storage of a process configuration and set points to give repeatable operating conditions.
PRISM ancillaries include change-bowl premixers, strand and face-cut pelletisers, conveyors, cast sheet and blown film lines.
The PRISM Eurolab XL is available from Rheology Solutions .