The Dow Chemical Company

Ray A Herring

Richard O Kirk

Forest Busby

Kathryn S Jones

A corotating multiple-screw extruder comprising first and second intermeshing screws of more than one flight. The first screw comprises first and second segments paired with first and second segments of the second screw, respectively. On the first segment of the first screw, the height of the first flight is less than the height of the second flight and on the second segment of the second screw, the height of the first flight is less than the height of the second flight and screws for use in such extruder.

High efficiency extruder

A multiple-screw extruder in which paired co-rating screws, or segments thereof, contain unequal numbers of flights; and a screw for use in such extruder.

Growing community of inventors

Angleton, TX, United States of America

Ray A Herring