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The ecodesign of a product implies that different potential environmental problems of diverse nature must be considered, apart from the general design criteria (i.e., technical, functional, ergonomic, aesthetic or economical). In this sense, an ecodesign tool integrating the criteria provided by three environmental evaluation methodologies, namely Ecological Footprint (EF), Life Cycle Assessment (LCA) and Environmental Risk Assessment (ERA), has been constructed on the basis of fuzzy logic reasoning and features. This idea enabled the decision making at process and product level taking into account the values of the different indicators at a time. The relative importance of each of them has been established through the definition of membership functions as inputs to the fuzzy inference reasoning procedure in the case of a specific product. As a result, a Fuzzy EcoDesign Index (FEcoDI) was obtained. A well known …