A new twin-screw press was developed for expressing oil from high oil content seeds or special oil seeds. Its squeezing chamber adopted double-step and multiple-stage form, in which two counter-rotating parallel screws were horizontally assembled, with one directly beneath another. The worms in the feed section took the form of partially meshing that means clearance existed between each meshing flights in the longitudinal direction but they overlapped in the transverse direction; in the ram section, non-intermeshing form was taken. Design of the main parameters of the twin-screw press was intr...
