Hothead? Chameleon? The thermal paint is both! Because the extravagant effect varnish reacts to heat and changes its appearance from zero to a certain degree (29 ° C) in zero commanix, more precisely, its color. We know the effect of the color-changing T-shirts, which were very fashionable in the eighties. If you only put your hand on it long enough, you could see its imprint at some point. A short time later, however, the whole haunt was over and the T-shirt looked like before. At the time, that almost bordered on magic.
Thermal paint pressure
Now back to the actual topic: the pressure on paper. Also on paper, the thermal paint changes its appearance from a certain temperature – from colored to transparent. Through this transparency you can see that underneath there is another motif that was previously hidden. Which heat moves the thermal paint to the color change, this basically does not matter: from the ambient temperature on the body heat to the sun – the main thing nice and warm. Incidentally, this effect is called thermochromism. The trick: even after the 100th rubbing, breathing, laying on hands or holding under the light bulb, the effect varnish proves its versatility.
Thermolack: Versatile use
Thermo-lacquer print finishing is particularly suitable for mailings due to its eye-catching advantages. We will illustrate this with a practical example. The owner of a tanning salon would like to start a promotion, which on the one hand is intended to attract new customers and, on the other hand, to retain existing customers. For this purpose, he distributes flyers throughout the city and also puts them out in his tanning salon.
At first glance, the flyers look pretty normal. The only thing that stands out is a circle filled with black color, over which you can read: “Here’s how to save”, “Please rub once!”, “Rubbings like” or something like that. If you rub over the black circle you will see as if by magic: “10 € voucher”. You can hardly bring your voucher to people more creatively. For online shops, coupon codes are the ultimate, which customers can enter at their next online shopping tour at the end of the order process.
The added heat changes the structure of the molecules and the color becomes transparent. In the cold state, however, the molecules do not let light through and the paint thus remains opaque. In most cases, a black thermoresist is used. The reason: This covers the underlying area particularly well. Other colors are also possible.