Sign In | Join Free | My himfr.com |
|
Ask Lasest Price | |
Brand Name : | ceres |
Model Number : | YYM27 |
Certification : | EN71-3 19, Rohs |
Price : | Negotiation |
Payment Terms : | T/T,Western Union, paypal, MoneyGram |
Supply Ability : | 5KG Per Week |
Delivery Time : | Within 3days after payment confirmed |
MOQ : | 100 gram |
Optically variable inks were first used in the anti-counterfeiting printing of banknotes, checks, bonds and other securities. With the continuous development of science and technology, optically variable inks are not only used for anti-counterfeiting printing of trademarks, but also for surface decoration of special products. The reason why the optically variable ink has the corner-changing color characteristic is that a pigment with a very special structure is used, and its particles are very thin flakes with a good particle size distribution. The production process of the pigment is as follows: under high vacuum conditions, according to the design requirements of a specific film structure, a variety of materials with different refractive indices are sequentially deposited on the same carrier to form an optically variable film, and then undergo crushing, grading, surface treatment, etc. . When the thickness of the film layer meets the interference conditions of light, the film layer will show a photochromic effect, that is, its color will change as the viewing angle of the human eye changes
![]() |