A systematic approach to evaluate jetability of high-viscosity resins for 3D inkjet printing applications

Recent advances in piezo inkjet printing technology have enabled the use of high-viscosity materials previously unsuitable for inkjet applications. This technology facilitates the printing of vat photopolymerization resins, traditionally used to produce single-material components with superior properties compared to those achieved with conventional UV inks in material jetting. The ability to print these resins with piezo inkjet technology opens new fields of application for producing multimaterial functional parts. To fully exploit this potential, it is essential to evaluate the compatibility of these resins with the new technology. This study systematically evaluates the jetability, printability, and performance of high-viscosity materials to optimize the printing process and provides a detailed understanding of the factors influencing the jetability of high-viscosity resins and develops guidelines for optimizing their use in 3D inkjet printing applications.