FIELD: devices for processing of polymeric materials by the method of extrusion, in particular, equipment for manufacture of polymeric shells. SUBSTANCE: the extrusion head comprises a detachable body, mandrel holder, cone, lattice, die and a detachable mandrel. The body components are linked by means of connecting bolts. The mandrel has longitudinal grooves and a smooth shearing in the area of connection of the longitudinal groove to the cylindrical section of the mandrel surface. The surfaces of the longitudinal grooves are formed by a quadratic curve. In the extrusion head provision is made for cooling of the inner surface of the obtained polymeric shell. EFFECT: enhanced stiffness of polymeric shell, improved quality and precision of shell dimensions. 3 dwg
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