Magic cup
As magic mug (English: Magic Mug ) refers to one provided with a color print cup whose subject is due to Thermochromism may change.
If such a cup is filled with a warm or hot drink , the temperature change on the outside of the vessel causes a visible change in the image. For example, a previously invisible motif can appear or a previously visible motif disappears. By combining temperature-resistant colors with thermochromic colors, transition effects between different motifs can also be created.
A simple but interesting property of the magic cup is the fact that the change in color on the outside can only be seen in the area that is determined by the level of the drink being filled.
It should be mentioned that the black ceramic magic mugs that are offered in many Internet shops do not turn completely black when they cool. The motif still shimmers through and is visible in direct light. This is due to the fact that the ceramic mug is coated with the thermochromic layer and a synthetic resin lacquer, and then the image is diffused in via sublimation . However, there are also offers where the cup or the covered surfaces are absolutely opaque when cold. This is due to an alternative manufacturing process, in which the motif first z. B. is applied in direct printing, fine art print or sublimation technology, and only then the thermochromic layer and a protective varnish are applied.
- Examples
Video: Wake Up Wonder Cup
Wonder cup as a promotional item
