Iron-on patches have heat-activated backings, and to apply them, place them on the clothes embroidery side facing up, heat iron, and apply it on the patch. There are multiple methods to remove these types of embroidery patches. The easiest of them is by using an iron on its hottest setting. Hold the hot iron on the patch for 15 seconds and remove the patch using a pair of tongs or tweezers from a side. If the patch is not removed, easily repeat the 15 seconds process.