When you drink from the coffee mug or let it cool down, it gradually returns to its original color, which is black, thus covering the message or image. How do Colour changing cold cups work?Īn increase in temperature causes a chemical reaction, resulting in the salt crystals mixing in with the dye This is how the color of your custom photo mug changes. Thermochromic paints are seen quite often as a coating on coffee mugs, whereby once hot coffee is poured into the mugs, the thermochromic paint absorbs the heat and becomes colored or transparent, therefore changing the appearance of the mug These are known as magic mugs or heat changing mugs. The thermochromic leucodye in your cup is reacting to the temperature of the water! The ink used to make your cup changes color at around 7-12✬ (45-50✯) You can see which part of the water is colder than this temperature, and which part of the water is warmer.
At what temperature do color changing cups change color? The main idea, or “magic,” behind them is heat-sensitive technology Once you fill the cup with your favorite iced beverage, it will quickly change to a fun ombre hue design.
If you’ve used or seen color-changing cups before, you may wonder how they work. How do the color changing starbucks cups work?
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