Ink characterization

Digital manufacturing

The first step toward an inkjet-based digital production is the material characterization. iPrint is equipped with all the necessary devices required for an accurate analysis of the physico-chemical and rheological properties of the inks and substrates. Surface and interfacial tensions can be measured to ensure the right balance between polar and disperse parts and therefore the desired wetting and adhesion of an ink on a substrate. The dynamic surface tension analysis is key to investigate the surface tension at short surface ages and conclude therefore on the most suitable surfactant, for example. Regarding the rheological measurements, we work in very close collaboration with our external research associate, Dr. Tri Tulardhar. The TriPAV allows us to measure the complex viscosity at high frequencies and at different temperatures, which is key to optimize the ink formulation and find the potentially most suitable jetting temperature. The TriMaster on the other hand allows us to characterize the visco-elastic behaviour of an ink and optimize its formulation to avoid a too newtonian behaviour eventually resulting in many satellites or a too visco-elastic behaviour preventing the ligament breakup. Ink stability and compatibility tests as well as particle-size characteirzation complete our offer.

Complex viscosity / Extensional viscosity / Dynamic surface tension / Stability / Particle size / Compatibility

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