Applicable to be used to issue notes of legal tender or any other type of document to facilitate its tactile recognition or prevent its falsification. It consists of a sheet of paper (1) in which expanding agents have been inserted (2), either centered heightwise or near the upper surface and/or lower surface thereof, forming a figure or inscription which, upon application of pressure and heat, either during the paper manufacturing phase or subsequent processes, cause the sheet of paper (1) to expand, thereby forming a curved and continuous embossing (3) on the surface of the document.