Kromagen is also combination of Leuco Dyes, Colour Developers and Melt Materials all blended together and then micronized to reduce particle size. This is then blended into a carrier forming an aqueous concentrate which changes from a translucent off white to a colour permanently when heated above its rating.
Again this reaction can be disrupted by several external influences such as high exposure to UV light, presence of polar solvents and excessive shear.
The visible colour change of Kromagen is generated over a 5 to 10°C range and colour does not fade when temperature decreases.
ChromaZone & Kromagen can be used for added security, to create interactive packaging, show that process temperatures have been achieved or to add something different to toys, labels, games or packaging.