Extrusion unit for additive printing using extrusion method

Abstract

An extrusion unit (100) for additive printing by extrusion includes a mixture reservoir (40) for storing and feeding a mixture containing water, an extrusion nozzle (20) with a length ranging from 15 cm to 50 cm and with an outlet diameter (21) ranging from 6 mm to 30 mm, wherein the extrusion nozzle (20) is equipped with at least one electric heating element (22), further includes a feeding device for feeding the mixture from the mixture reservoir (40) to the extrusion nozzle (20) and a thermal management device arranged for controlled solidification extrusion.