Patent DE-102011122113-A1 (DE)
Title: Base substrate, used for composite film banknote in form of rectangular sheet, comprises parallel strip-shaped perforated tracks that extend along longitudinal/transverse direction of the substrate and contain a substrate dilution
Inventor: RENNER PATRICK
IPC: B42D15/00
Filed: 2011-12-22
Abstract: The base substrate comprises parallel strip-shaped perforated tracks that extend along a longitudinal direction or a transverse direction of the base substrate and contain a substrate dilution (60) in a first partial region (56), a through-hole (62) passing through the base substrate in the substrate dilution, and a substrate thickener in a second partial region (58). The base substrate has a constant first substrate thickness (S 0), and a thickness of the substrate is increased in a region of the substrate thickener to a second substrate thickness of 1.20.S 0 and 1.40.S 0. The base substrate comprises parallel strip-shaped perforated tracks that extend along a longitudinal direction or a transverse direction of the base substrate and contain a substrate dilution (60) in a first partial region (56), a through-hole (62) passing through the base substrate in the substrate dilution, and a substrate thickener in a second partial region (58). The base substrate has a constant first substrate thickness (S 0), and a thickness of the substrate is increased in a region of the substrate thickener to a second substrate thickness of 1.20.S 0 and 1.40.S 0. The substrate thickness in a region of the substrate thickener increases continuously in a direction perpendicular to the perforated track from the first substrate thickness to the second substrate thickness and then again continuously decreases to the first substrate thickness. The substrate thickness in a region of the substrate dilution decreases continuously in a direction perpendicular to the perforated track from the first substrate thickness to a third substrate thickness at an edge of the through hole and then again continuously increases to the first substrate thickness. The perforated track has a width of 0.5-3 cm. The substrate thickener is represented by delta M t h i n, and the substrate dilution is represented by delta M t h i c k, where the delta M t h i c k is equal to 0.8.delta M t h i n to 1.3.delta M t h i n. The through-hole comprises a sharply defined edge having characteristic irregularities created during the manufacture of paper. The perforated track consists of a first thinned subregion, a second thinned subregion, and a third thinned subregion that is completely arranged within the second subregion. An interruption of the second subregion is present transverse to the strip-shaped track. The third subregion is arranged in the form of webs, non-linear patterns, or in the form of a motif. The third subregion in the base substrate forms: an authenticity marking such as a code, one- or two-dimensional barcode or Braille; or a pattern such as a stripe pattern. An irregularly shaped third subregion is distributed in the second subregion. The base substrate is made of paper such as cotton paper, or of paper having a content of polymer fibers. Independent claims are included for: (1) a value document such as a film composite banknote; (2) a method for producing a base substrate; (3) a method for producing a value document; and (4) a drainage strainer for producing a base substrate.