A method for producing a value document substrate, it available value document substrate and document of value

The invention relates to a method for manufacturing a multilayer substrate document of value with at least one embedded between two sheets and provided with at least one watermarked paper strip, comprising a) continuously providing a first film web and a second web of film by extrusion; b) the continuous embedding at least one strip of paper is in the form of a continuous web and is provided with watermarks, between the first film web and the second web of film; c) cutting the composite obtained in step b). The invention further relates to a method for manufacturing a multilayer substrate document of value with at least one embedded between two sheets and provided with at least one watermark paper patch or paper patch.