Unlike most rotor designs, which feature a constant rotor tip width and rotor tip to chamber wall clearance, each long wing of the 6-wing VCMT rotor is split into three distinctively different rotor tip widths and rotor tip-to-chamber wall clearances (as illustrated in figure 4).
The three short wings of the 6-wing VCMT rotor are different than the long wings; as the tip width and tip-to-chamber wall clearance, along each of their lengths, are constant.
The overall advantages of the 6-wing VCMT rotor are:
When compared with other rotor designs, the 6-wing VCMT rotor gives the fastest cycle times, which leads to the highest throughput.
Products mixed with the 6-wing VCMT rotor have shown reduced Mooney viscosity when compared to material mixed with other rotor designs.
A second example comparing the 6-wing VCMT rotor with other rotor designs is exhibited in table 5.
The information obtained from the two and three dimensional model tests on dispersive and distributive mixing was applied in the design of the new 6WI rotor with patented VCMT.
VCMT is a new design concept which features varying tip to chamber side clearances, and rotor tip to tip clearances.
Successful 6WI VCMT rotor mixing trials have been conducted with a variety of compounds.
Figure 9 also demonstrates that the new 6WI VCMT rotor provides a higher range of applicable fill factors and reduces ram seat time (ref.
Figure 9 shows a reduction in Mooney viscosity with the 6WI VCMT rotor given equal mixing time(s) (ref.
The patented 6WI VCMT rotor may be used for masterbatch or final mixing.