SECURITY ELEMENT WITH PATTERN AND DOUBLE-SIDED HOLOGRAPHIC EFFECT

摘要

A security element is described which comprises a transparent first layer (2) having a holographic surface structure (21), a first metal layer (41) on said first layer in a first pattern thereby forming transparent and non-transparent regions (9) and a holographic surface structure, a second layer (3) having a second holographic surface structure (32), and a second metal layer (42) on said second layer in a second pattern thereby forming transparent and non-transparent regions and a holographic surface structure, wherein said transparent regions of said first metal layer and said second metal layer are arranged to at least partly overlap each other and the non-transparent regions of the metal layers develop holographic effects on both sides of the security element which effects may be different. In a process for making the security element, an embossable radiation-sensitive polymer material is used to form the second layer.