FIELD: physics.
SUBSTANCE: group of inventions relates to the field of document security. Secured document comprises a substrate having a first surface and a second surface opposite the first surface, the first surface having a cellulose material. Secured document additionally contains an optical security device having visual signs of authenticity of the secured document, and a third surface, wherein the third surface has a thermoplastic polymer. Secured document also comprises an ultrasonic weld seam forming a bond between the first surface section and the third surface section.
EFFECT: higher security of documents.
36 cl, 7 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| FULLY MICRO-OPTICAL PROTECTED DOCUMENT | 2019 |
|
RU2790220C2 |
| LASER MARKED DEVICE | 2012 |
|
RU2614643C9 |
| USE OF NANOPARTICLES TO ADJUST REFRACTION INDEX OF POLYMER MATRIX LAYERS IN ORDER TO OPTIMIZE MICRO-OPTICAL (MO) FOCUSING | 2020 |
|
RU2818504C2 |
| USING NANOPARTICLES TO ADJUST REFRACTIVE INDEX OF POLYMER MATRIX LAYERS TO OPTIMIZE MICROOPTICAL (MO) FOCUSING | 2020 |
|
RU2810915C2 |
| PROTECTED DOCUMENT WITH ATTACHED PROTECTION DEVICE HAVING INCREASED PROTECTION FROM EXTRACTION | 2019 |
|
RU2783998C2 |
| USING NANOPARTICLES TO ADJUST REFRACTIVE INDEX OF POLYMER MATRIX LAYERS TO OPTIMIZE MICROOPTICAL (MO) FOCUSING | 2020 |
|
RU2810914C2 |
| MICRO-OPTICAL SECURITY ELEMENT WITH COLOUR ZONES | 2020 |
|
RU2824320C2 |
| MICRO-OPTICAL PROTECTIVE DEVICE WITH ABSOLUTE ALIGNMENT | 2020 |
|
RU2817288C2 |
| SECURITY SHEET OR DOCUMENT HAVING ONE OR MORE ENHANCED WATERMARKS | 2014 |
|
RU2680329C9 |
| IMAGE REPRODUCTION AND SECURITY MICROOPTICAL SYSTEM | 2004 |
|
RU2414731C2 |
