SECURITY DOCUMENT HAVING WATERMARK-LIKE STRUCTURE

摘要

The invention relates to a composite security document (1, 1', 1') having a watermark-like structure, and a method for producing such a composite security document, a plurality of layers (3-7) being prepared, the plurality of layers (3-7) being disposed one over another, and the plurality of layers (3-7) disposed one over the other being laminated in a high-pressure, high-temperature lamination process to form a monolithic document body (2), at least one recess (9, 17, 18-21) being made in at least one of the plurality of layers (3-7), and the plurality of layers being disposed such that the at least one recess (9, 17, 18-21) is closed at an upper and a lower side (15, 16) of the layers disposed one over the other, and the volume of the recess (9, 17, 18-21) being empty, and the at least one empty recess (9, 17, 18-21) being evacuated, and the lamination being performed so that a hollow relief structure (8, 8', 23-25) is formed in the document body (2).