Rose Fragrance Stamps by Bhutan: World’s First Fragrance Stamp
The process of printing of the perfumed stamps consists of three stages. In the first stage the stamp is printed as it is done in the case of any normal stamp. In the second stage, for giving fragrance to the stamp sheet, a special fragrance based ink is applied into the cells of 30 to 40 microns depth, in the cylinders used for photogravure printing and the stamps were then rolled on to these cylinders. By this process, under pressure, they are transferred on to the stamp paper. At the last encapsulation stage, where stamps are dried, micro capsules of the ink are injected and these get permanently embedded in the stamp. It is these micro capsules which hold the fragrance. Whenever the stamp is rubbed these micro capsules break and emit the fragrance of rose flower.