HD Rotors Farrel Pomini has designed these single-stage high-dispersion rotors for use with its line of compact processors, which combine a compounder and an extruder on a single frame. The screws feature a mixing section that is double the length of the standard Farrel Pomini rotor in a 10:1 L:D format. They excel in applications that require high dispersion, such as processing fiber grades, carbon black and color concentrates.
What’s new? The rotor’s concave feed-flight design. This new element makes intake of lower-bulk-density materials more efficient.
Benefits A design that optimizes performance. Throughput is maximized by the increasing pitch of the rotor’s new partial double-feed flight. Rotor cooling along the mixing section increases the material’s residence time in a semi-molten state. The rotor’s wider apex region, which boosts homogeneity of the compound, facilitates greater material exchanges between the rotors. A pumping section located downstream of the blister ring improves venting.
Farrel Corp., Ansonia, Conn., 203-736-5500, www.farrel-pomini.com
