DEVICE AND METHOD FOR PRODUCING CELLULOSE TUBULAR FILMS

摘要

The invention concerns a device for producing cellulose tubular films by extruding a solution of cellulose in an aqueous tertiary amine oxide into a precipitating agent located beneath the device which is comprised of an extrusion nozzle with an essentially annular extrusion gap; a supply line for precipitating agent and a drain for said precipitating agent is provided in the interior of the ring formed by the extrusion slot; this device is characterized in that the supply line (3) for the precipitating agent ends below the drain (4) for said precipitating agent.