SECURITY DOCUMENT INCORPORATING OPTICAL COMPONENT

摘要

A security document or device ( 30 ) is provided which has a substrate ( 31 ) including at least one layer ( 35,37 ) of polymeric material and an optical component formed by at least one orientating (PPN) layer ( 34 ) and at least one liquid crystal polymer (LCP) layer ( 36 ) in contact with the orientating layer ( 34 ). An intermediate prime layer ( 38 ) is provided between the optical component and the substrate ( 31 ) which improves the adhesion of the optical component to the substrate ( 31 ). The prime layer ( 38 ) may include a hydroxyl terminated polymer which is cross-linked by a multifunctional isocyanate. A security document with such a prime layer between the optical component and a polymeric surface of the substrate is more robust and able to withstand rough treatment without significantly affecting the optical properties of the optical component.