A new method development for surface treatment of thermoplastic polyurethane (TPU) substrates. The proposed method increases TPU surface energy (by 45%) and consequently the TPU wettability. Great increase of the TPU surface roughness (by 621%). Inkjet printed conductive ink was applied to the surface treated TPU substrate and significant improvements on the printability were obtained. (C) 2015 Elsevier B.V. All rights reserved.