SICHERHEITS- UND/ODER WERTDOKUMENT

摘要

The document has a support (1) made of paper material and including window shaped through holes that are closed by a thread-like film unit (2). A transparent sealing layer covers surfaces of the unit in an area of the holes. The layer is applied to the side of the support lying opposite to the unit. The layer has a linear expansion coefficient that does not deviate more than 10 percent from a linear expansion coefficient of the unit.