There is a high growth for additive manufactured parts in the polymer industry. Nevertheless, especially for laser sintering (LS) the material selection is very limited in comparison to other polymer production processes like, for example, extrusion or injection molding. One major reason for that problem is that there is almost no knowledge which material properties are important for the process and how the material parameters affect the product quality. This is particularly disadvantageous because there are many potential influencing factors for polymer sintering. Thus, a profound understanding of all relevant mechanisms of the LS process is considered to be lacking. In particular, it is challenging to link process parameters, material data and component quality. This causes significant difficulties in developing and processing new materials, as it is for example not known how much energy depending on the melting enthalpy of a material leads to the desired product quality in terms of mechanical properties. To address this problem, a link between material data, process parameters and component quality is necessary. This link can be achieved by a combination of experimental investigations and theoretical considerations to develop dimensionless characteristic numbers. This paper presents a method to link energy input with amount of sintered material, specific melting enthalpy and thicknesses of printed monolayers. The resulting dimensionless energy input is compared to mechanical properties of printed specimen. The chosen procedure shows an area of constant dimensionless energy input in which good mechanical properties are achieved. This forms the basis for carrying out comparable considerations for other materials and thus to estimate the printability and the reasonable processing window by simple experiments.