Multi-layer printing substrate with hidden information
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 18, 2025
Grant Date -
May 18, 2023
app pub date -
Mar 25, 2021
filing date -
Mar 25, 2021
priority date (Note) -
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status (Latency Note)
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Abstract
A security paper, having a first paper ply and a second paper ply, and a plastic ply made of a thermoplastic polymer material arranged between the paper layers (1, 2), wherein a strip-shaped tear-off film is embedded between the paper layers on the inner side of the second paper layer and at least partially embedded into the plastic layer. Hidden information is arranged on the inner side of the first paper ply and is covered by the strip-shaped tear-off film or is arranged on the surface of the strip-shaped tear-off film facing the first paper ply. The hidden information can be exposed by the strip-shaped tear-off film together with a strip of the second paper ply being irreversibly torn off the multi-layer substrate.
First Claim
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International Classification(s)
- B41M:PRINTING, DUPLICATING, MARKING, OR COPYING PROCESS....
- A63F:CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING....
- D21H:PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED....
- B42D:BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER O....
- B26F:PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; ....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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