In such a case, we demonstrate a �me window of 2 h in which thermal forming is possible without material degrada�on. In this way, not only micro-op�cal structures can be generated, but also other types of thermally imprinted feature, e.g., including regular surface paterns, labels or channels. As a perspec�ve, these features could be designed in such a way that they are sensi�ve to the presence of vola�le guest molecules.