earticle

영어

Solvent type inks for surface printing of the hard coated polycabonate have some problems that are solvent ejection and dropping productivity because of drying time and twice coating process. In this study, an attempt was made to examine both the formulation of UV ink replacing solvent type ink and the properties of ink films formed through screen printing using UV ink and exposure. The UV ink was prepared by first mixing pigment in epoxy type prepolymer A that has rheological excellence, excellent curing property and adhesive strength with hard coated polycabonate. To this paste, HSP 188 as the photoinitiator that has excellent miscibility with the epoxy type prepolymer A and excellent curing property was added and throughly mixed. After optimization of the UV ink formulation and process, UV ink had good dispersibility of pigment. And after UV curing, ink film had adhesive strength with hard coated polycabonate and strong solvent resistance.
Also use of UV ink could shorten manufacturing process because the second UV coating process and ink dry process were not existed. and could improve print working environment because there is no solvent ejection.