disclosed herein is a head for mixing and ejecting interacting liquid components , in particular for molding articles made of plastic material . the head comprises : a mixing chamber that communicates with a discharge duct , and a first and at least a second duct for infeeding the individual components , the orifices of which open into the mixing chamber ; the latter being placed laterally with respect to the discharge duct and its axis forming an angle with the axis of the discharge duct .