The aim of this paper is to compare electrical, mechanical and thermal characteristics of two self-bonding solutions to the impregnation one. An alternative solution is developed without Volatile Organic Compound (VOC). The study focuses on two parameters: the Partial Discharge Inception Voltage (PDIV) of turn-to-turn insulation and the thermal conductivity between the heart of the winding and the magnetic core. This study place the problem of electrical machines design in a broader context which includes the life cycle analysis, in order to go towards the eco-design of electrical machines able to reduce the global environmental footprint.