Multi-layer structure and process for its preparation for an insert sheet and a liner sheet and a process for its production and a value and / or security document

The invention relates to a multilayer structure for an insert sheet to embed in a preferably book-type security and / or valuable document, with an area for forming a data sheet (14) and an area to form a tab (16), wherein at least one fiber composite layer (18) and at least one layer (19, 24) is provided from a thermoplastic polymer applied on at least one side of the fiber composite layer (18) and based in the overlap region to the thickness of the layer (19, 24) at least partially in the fiber composite layer (18) is einpenetriert ,