Security or special paper with internal tactile recognition elements

Abstract From the Canadian patent

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.