Circular System Design – A Case Study on Insulation Material in Switzerland Maja Wiprächtiger, Niko Heeren, Melanie Haupt, Catharina Bening, Nicola Blum, Hendrik Clausdeinken, Jakob Prüß, Volker Hoffman, Stefanie Hellweg May 1, 2018 NRP 73 project MFA LCA Material Circular Economy Recycling