Optical variable pigment
polychromate pigment
INTRODUCTION 
Optical Changeable Ink/optical variable pigment is the most complex intererometric type of anti-counterfeiting ink/pigment. 
The finished product is provided with florid mechanic color. The color spot will present complete different colors while changing the viewing angle in the day light, it has very strong optical variable characteristic and obvious chromatism. 
This can't be reproduced by the high definition of copy machine, scanner or other equipment. The printing character is unique and unable to copy. 

THEORY 
The Changing color effect of Opitcal Changeable Ink/ is achieved by Optical color changeable pigment in the ink.

APPLICATION 
It can be applied in different kinds of anti-counterfeiting packaging, securities, famous trade mark, certificate and note, bank-note etc. Now many tobacco and wine companies are adapting it in the anti-counterfeiting packaging.

PRODUCTS 
At present, our company can produce the following products:

Green/Red 
Blue/Red 
Golden/Silver 
Red/Green 
Red/Golden
Silver/Green
Yellow/Blue
Green/Salmon Pink
Blue/Salmon Pink
Yellow/Green

SECURITY FEATURES 

Colors of presswork will vary while change the viewing angles. Colors shift obviously and characteristic. 
Consumers can identify without any instrument and equipment. It is typical "top-notch anti-counterfeiting" technology. 

Wide application scope, it can be printed on paper, plastics and aluminum foil etc. 
Stable performance. Good damp-proof, sun-proof and anti-corrosive. 
It is safe with no radiation or toxicity. 
The manufacture technique and product design of OCI is highly specialty, involves costly investment, such product has high industrial boundary, ordinary company is difficult to deal with such business, so it's reliable.