Analyzing and modeling of uncertainty factors influencing product recyclability

Green design has become an important issue in industry, driven by regulations governing manufacturing emissions, growing worldwide environmental certification requirement and an emerging consumer preference for ecolabel products. DFR (design for recycle) has become one of the most important parts of green design. This paper focuses on analyzing the uncertainty factors influencing product recyclability and applying unascertained number theory to determine the influencing factor δ of uncertain information of product recyclability. A case study demonstrates that the unascertained number-based model can effectively account for the uncertainty information being used for evaluating the product recyclability. The model mentioned in this paper is useful, not only for determine the influencing factor of uncertain information, but also for other evaluation systems where the uncertainties influence should be considered.