In polymer processing, the blown film extrusion is one of the most important processes for the production of films. Thereby, the extrusion die can be seen as the form-giving component, which transforms the melt into a tubular film at the die exit. State of the art extrusion dies are designed as spiral mandrel dies and they are credited with positive characteristics regarding weld lines respectively material and thickness distribution at the exit. Nevertheless, the temperature distribution shows potentials for improvement, as the layer of melt affects the heat transfer away from the spiral mandrel. It has been simulated, that in operation a temperature delta of up to 20°C between the housing and the spiral mandrel is established, which influences the cooling behavior of the inner and outer product surface. For conventional production methods such a die consist of several components, which have to be assembled. The aim of this paper is the identification of potentials for a novel die design for blown film extrusion processes, originated by a different manufacturing method for such dies. The chosen procedure will be the additive manufacturing method of selective laser melting Thereby, a thermo-rheological optimization is achieved by realizing new geometrical structures, which cannot be manufactured by conventional procedures. Focus of the design process is an improved temperature household of the new die geometry. In a first step, the requirements on the die and the geometric restrictions are defined and the restrictions of the manufacturing process are gathered and will be implemented in a 3D-CAD master model. Different geometrical structure elements are investigated and will lead to a basis model for the extrusion die.