Hot stamping foil adhesion is measured in a number of different ways, and there is a lot of misconception about what each test really measures. Take the simple scratch test for example. Is that a definitive adhesion test or simply a measure of the hardness of one’s fingernail?
In fact, most adhesion tests carried out are comparative rather than a true measure. If you have two foils on the same substrate, both blocked at the same time, then you can test their comparative re...