METHOD FOR PRODUCING A SECURITY COMPOSITE BODY, AND SECURITY COMPOSITE BODY HAVING TWO REFRACTIVE STRUCTURES

摘要

The invention relates to a security composite body (100) and a method for producing such a security composite body (100), said method comprising the following steps: producing a composite body, forming a surface relief structure (75) on an outer surface of the composite body, introducing an optically verifiable feature (61) into the composite body, wherein the surface relief structure (75) and the feature are formed in exact alignment with each other, wherein the composite body is produced in such a way that, in the interior, a boundary layer between a first plastic material having a first index of refraction n1 and a second plastic material (11) having a second index of refraction n2 different from the first index of refraction n1 is structured with a boundary layer relief structure (5) deviating from a flat surface and is oriented in exact alignment with the feature and the surface relief structure (75), so that a verification of the feature (61) can be verified by means of an optical structure formed from a combination of the surface relief structure (75) and the boundary layer relief structure (5).