| 摘要 |
The invention relates to a planar substrate sheet (10) for producing security documents and value documents, comprising two main surfaces (14, 16) lying opposite each other, corners (18), and side edges (20), which connect the corners and which form a perimetric edge (22) of the substrate sheet. According to the invention, at least in the region of the edge of the substrate sheet (10) on at least one main surface (14), the substrate sheet (10) comprises a stabilizing layer (24) for mechanically stabilizing the substrate sheet (10). |
