The Difference Between Transparent and Invisible Color Stamping Foil with Hologram

Suzhou Image developed two kinds of optical stamping foil material, one is transparent foil, the other one is metalized foil, we called it invisible color stamping foil.
szimagetech.com/holographic-h...
The difference is that one is transparent, while the invisible color foil is metalized. The light change effect and viewing angle are different.
Transparent optical stamping foil material shows stable color changes under the reflection angle. It can be stamped alone or combined with the printing process.
Invisible color hologram stamping foil is upgraded based on transparent foil material, it’s metalized. The feature is when viewed from a front angle, one can only see the foil colors like silver and gold, and can’t see the optical color. When tilt or rotate the foil, the optical colors appear.
Both transparent and invisible color stamping foil can be used as cold or hot stamping materials. Can be combined with different printing processes.