There are two types of color changing cups available on the market:
1. Thermochromic cup (the most common), as the name implies, it will start to change color when it encounters hot water above 40 degrees, showing the printed pattern;
2. Cold-changing color-changing cup (less at present), that is, it can change color when exposed to water, of course it is low temperature rather than hot water!
In fact, whether it is a thermal change or a cold change, the principle of the color change is the same, but the temperature sensing material is different!
The color-changing cup cannot be changed without its unique structure. The color changing cup is composed of two coaxially arranged outer cups and inner cups. Between the bottom ends of the two cups, a sandwich cavity filled with thermosensitive color changing volatile liquid is provided. The outer side wall of the inner cup is engraved with this layer. Intracavity
Let‘s first understand the principle of the color changing cup. The color-changing cup cannot be changed without its unique structure. The color changing cup is composed of two coaxially arranged outer cups and inner cups. Between the bottom ends of the two cups, a sandwich cavity filled with thermosensitive color changing volatile liquid is provided. The outer side wall of the inner cup is engraved with this layer. Art graphics channel through the cavity. After the drinking cup is poured into hot water, the heat-sensitive liquid in the interlayer cavity will change in color and rise into the graphic channel of the inner cup, making the wall of the cup show an artistic pattern, giving people a sense of beauty and artistic enjoyment. Therefore, the color change of the color-changing cup lies in this heat-sensitive coating structure, and the completion of the color-changing cup inside the cup wall is a pure natural physical reaction, and it is a non-toxic, harmless and pollution-free plaything.
