SECURITY ELEMENT WITH PATTERN AND DOUBLE-SIDED HOLOGRAPHIC EFFECT

A method for manufacturing a security element includes forming a first layer from a transparent material, forming a first holographic surface structure on the first layer, metallizing the first layer to form a first metal layer, forming a second layer from a radiation-sensitive polymer, forming a se...

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Bibliographische Detailangaben
Hauptverfasser:	BALLABIO, Eligio, BELLI, Alberto, PALLOTTA, Pasquale
Format:	Patent
Sprache:	eng
Schlagworte:	BOOK COVERS BOOKBINDING CINEMATOGRAPHY DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR ELECTROGRAPHY FILES HOLOGRAPHIC PROCESSES OR APPARATUS HOLOGRAPHY LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR SPECIAL PRINTED MATTER TRANSPORTING
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Beschreibung
Zusammenfassung:	A method for manufacturing a security element includes forming a first layer from a transparent material, forming a first holographic surface structure on the first layer, metallizing the first layer to form a first metal layer, forming a second layer from a radiation-sensitive polymer, forming a second holographic surface structure on the second layer, metallizing the second layer to form the second metal layer, forming a pattern of a coating on the second metal layer in which the pattern includes regions covered by the coating and regions uncovered by the coating, removal of the metal in regions of the second metal layer which are uncovered by the coating through de-metallization, exposing the de-metallized regions of the second layer to light or radiation, and removal of the metal in regions of the first metal layer that are not covered by the second layer, through de-metallization.