FIELD: food industry. SUBSTANCE: cylindrical ring projection is found in middle part of extruder auger between metering and delivery zones. Projection is provided with triangular cross-section grooves on surface directed along auger axis. Maximum height of ring projection corresponds to outer diameter of auger cut. Ring projection can be made of stepped shape with height of projection gradually increasing in direction of die to increase degree of compression of handled material from 1.5 at inlet to 6.0 at outlet from clearance between projection of auger and bushing. EFFECT: enlarged sphere of application of extruder and possibility of handling materials of different dispersed composition. 4 cl, 3 dwg
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