APPARATUS FOR TREATMENT OF GRANULAR POLYMERS WITH GAS Russian patent published in 1994 - IPC

FIELD: gas treatment of granular polymers. SUBSTANCE: apparatus has a housing communicated with a gas supply system and gas removal system, and a granular polymer feed system and discharge system. Disposed within the housing are an elastic tore and a drive reversing drum having strips wound on it and encompassing the tore. The opposite ends of the strips are attached to the housing. When the reversible drum rotates, tore is actuated to reciprocate through the strips alternative winding and unwinding. EFFECT: process of gas treatment of polymers is intensified and forming of dead areas is excluded. 1 dwg