Optical variable ink

Optical variable ink: 1.Printing type: silk-screen,intaglio; 2.Colors: silver to green ,purple-red to green ,red to green and so on. 3. Use for: Paper, PVC, PP and so on. 4.Sort: OVI inks has three types: Interference type, liquid crystal type and isinglass. The Interference type is best and very particularity. Liquid crystal is better than isinglass. 5.Effect: OVI - Optical Variable Ink OVI- Optical Variable Ink is a high security feature showing different colours as the angle of view changes. Optical Variable Ink can have a support printing by a dark colour shade to get a luscious colour effect.