An EPDM-based compound with high filler content was evaluated using four different rotor designs with variations in
cross-sectional profile and wing configurations. The effect of these rotors on the mixing efficiency, fill factor, single
pass mixing, extruded surface quality and Mooney viscosity and scorch was studied. The results demonstrated that the
six-wing Variable Clearance Mixing Technology rotors gave the fastest cycle times and highest throughput for a single
pass system. In addition, the six-wing VCMT rotors also achieved lower Mooney viscosity and scorch at higher rotor
rpm than the other rotor designs.
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http://caosu.org/entry.php/104-VCMT-rotors-improve-mixing-time-throughput
