Co-rotating multiple screw processor

摘要

This invention relates to a screw processor having multiple fully intermeshed co-rotating in-phase screws each provided with equal numbers of threads, each of said screws having longitudinally staged eccentric cross-sections preselected so that at least one thread of each screw spreads process material over the barrel bore and at least one other thread of each screw collects said process material and transfers it to a co-acting screw, which thereupon repeats the spreading-collecting-transfer cycle.