FIELD: processing of rubber and thermoplastic materials. SUBSTANCE: extruder comprises a mixing zone and a transfer zone. Disposed radially in the mixing zone of the casing are pins. The turns of auger thread in the pin zone are interrupted for the passage of the pins. The threads in the transfer zone are made on the auger and in the casing with the inter-turn volume changing from zero to a maximum and back to zero. The transfer zone accommodates adjustable throttle pins in the maximum inter-turn zone of the casing thread. This ensures versatility of the extruder with relation to extrudate. The combination of two zones increases yield of material by 60-100% at the unchanged quality of mixing and the driving torque reduced by 50%. A constant number of thread turn entries on the casing and auger provides for independence of the number of casing and auger turn crests upon the cross-sectional area of the turn pitch on the casing and auger. EFFECT: improved design. 8 cl, 7 dwg
