methods for creating a transparent polymer window with a lens field on a security paper substrate, a device designed to fill an opening formed on a security paper substrate with transparent polymer material, and a processing machine

摘要

Abstract Methods for creating a transparent polymer window with a lens field on a security paper substrate, a device designed to fill an opening formed on a security paper substrate with transparent polymer material, and a processing machine. a method for creating a transparent polymer window (w) with a lens field (1) on a security paper substrate (1), wherein the method comprises the steps of (i) providing a security paper substrate (1). 1), (ii) forming an opening (10) in the security paper substrate (1), (iii) laminating a transparent film (5; 5 *) on a first side (i) of the security paper substrate (1) ) in such a way as to close the opening (10) at one end, and (iv) fill the opening (10) with transparent polymer material (2). In one embodiment, the transparent film (5) comprises a lens field (1) and is laminated on the first side (i) of the security paper substrate (1) such that it forms lenses (1) on the first side (1). (i) the safety paper substrate (1) in registration with the opening (10). in another embodiment, the lens field (1) is replicated in the transparent polymer material (2) applied to the aperture (10) in such a way as to form lenses (1) on a second side (ii) of the security paper substrate (2). 1), opposite the first side (i), in register with the opening (10). Also described is a device designed to fill the opening (10) formed in the security paper substrate (1) with the transparent polymer material (2) and a processing machine comprising it. 1/1