received by the International Bureau on 14 August 2020 (14.08.2020)

1. Method for creating security elements containing foil on security documents (1, 1') with hot stamping, characterised by that a first foil (3, 3' ) is applied to a security document (1, 1') using hot stamping, and onto that a second foil (4, 4') that partially overlaps it is also applied, and optionally one or more further foils (5') partially overlapping at least one of the previous foils are also applied, and the register precision used during the method is +/- 0.4 mm.

2. Method according to claim 1, characterised by that the register precision is +/- 0.2 mm.

3. Method according to claim 1 or 2, characterised by that at least the one foil has at least five layers, which five layers in the direction from the stamping tool to the surface of the security document to be supplied with a security element are the following: polyester layer, separation layer, transparent protective layer (33, 43, 33', 43', 53'), metallised layer (32, 42, 32', 42', 52') and adhesive layer (31, 41, 31', 41', 51' ) .

4. Method according to claim 3, characterised by that the adhesive layer (41', 51') of the second and/or other foils (4', 5') contains 0.1-2 g/m² 1 , 4-cyclohexanedimethanol dibenzoate, preferably 0.3-0.6 g/m² 1 , 4-cyclohexanedimethanol dibenzoate .

5. Method according to any of claims 1 to 4, characterised by that the hot stamping temperature during the hot stamping of the first foil (3, 3') is between 140-200 °C, preferably between 160-180 °C.

6. Method according to any of claims 1 to 5, characterised by that the hot stamping temperature during the hot stamping of the second foil (4') and optionally further foils (5') is between 60-100 °C, preferably between 75-85 °C.

7. Method according to any of claims 1 to 6, characterised by that the pressure used during the hot stamping of the first foil (3, 3') is between 100-220 bar, preferably 120-160 bar.

8. Method according to any of claims 1 to 7, characterised by that the pressure used during the hot stamping of the second foil (4') and optionally of further foils (5') is between 10- 50 bar, preferably 25-35 bar.

9. Method according to any of claims 1 to 8, characterised by that the holding time used during the hot stamping of the first foil (3, 3') is 0.1-2 sec, preferably 0.3-0.6 sec.

10. Method according to any of claims 1 to 9, characterised by that the holding time used during the hot stamping of the second foil (4') and optionally of further foils (5') is 0.1-1 sec, preferably 0.15-0.3 sec.

11. Method according to any of claims 1 to 10, characterised by that at least the one foil contains one or more secondary security elements selected from the following:

• a layer providing a phenomenon based on light diffraction;

• fluorescent security elements, preferably mono-, bi-, tri-fluorescent pigments and pigment mixtures;

• anti-Stokes pigments;

• infrared fluorescent elements;

28 • iridescent pigments, metallic lustre pigments, pigments that change colour depending on the direction of illumination and viewing;

• photochromic and thermochromic pigments.

12. Security document (1, 1') containing security element created with hot stamping, characterised by that the security element is created with the method according to any of claims 1 to 11.

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