Reversible Hydrochromic Ink
A. Principle
Composed of porous materials. When light passes through the dried porous irregular structure, light scats and makes the surface look like a white opaque coverage. Upon water enters into the pores, water increases light refraction, let porous become transparent and reveal the covered pattern. It reverts to white opacity after the water evaporates.
B. Product Information
Specification：Powder
Certification：EN-71-3, RoHS
Standard Colors：White
C. Available Forms & Applicability：
| No. | Forms | Water-based ink |
|---|---|---|
| 01 | Solvent：Ink, Paint | |
| 02 | Aqueous：Ink, Paint | Suggest Concentrations：Print directly |
| 03 | Plastic Injection, Extrusion |
：Applicable、 ：Conditionally Applicable、 ：Not Applicable。
D. Notice：
1. Avoid diluting the ink with solvents or water, it may make adhesion worse.
2. The thicker film thickness presents good coverage, but decrease the water permeability.