FIELD: manufacturing technology.
SUBSTANCE: invention relates to protective strip intended for partial inclusion into valuable document structure, at least, partially consisting of fibres. Protective strip protrudes on said document surface in form of set of openings. Strip has transparent or translucent substrate, on one of its sides containing visible at reflection coating. Strip also includes lengthwise strip, at least, partially not having said coating and separating first and second filamentary zones, coated with said coating. Each of said filamentary zones has two different appearances and/or optical effects visible at reflection. At that, they contain negative patterns. Negative patterns are interconnected so, that, at least, one pair of interconnected patterns always has same pitch spacing, when it is repeated along said zones.
EFFECT: when valuable document viewing creating impression of presence of two different threads, which optical effects make valuable document forgery extremely difficult.
10 cl, 12 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DOCUMENT PROTECTED FROM COUNTERFEIT | 1998 |
|
RU2193975C2 |
| PROTECTIVE STRIP AND SECURED DOCUMENT CONTAINING SUCH STRIP | 2015 |
|
RU2671095C2 |
| PROTECTIVE ELEMENT AND METHOD FOR MANUFACTURING SAID ELEMENT | 2003 |
|
RU2314930C2 |
| PROTECTIVE ELEMENT WITH EFFECT OF COLOR CHANGE AND METHOD OF ITS PRODUCTION AND USE | 2012 |
|
RU2600088C2 |
| SECURITY ELEMENT AND SECURITY DOCUMENT | 2016 |
|
RU2700012C1 |
| PROTECTIVE DOCUMENT | 2007 |
|
RU2477888C2 |
| PROTECTIVE COMPONENT USED FOR THE FORGERY-PROOF PAPER AND THE IMPORTANT DOCUMENTS | 2002 |
|
RU2316428C2 |
| PROTECTIVE ELEMENT | 1997 |
|
RU2196357C2 |
| PROTECTIVE THREAD | 2012 |
|
RU2607811C2 |
| SECURITIES WIT COLOR CODE, LAMINATED SECURITIES, SECURITY DOCUMENTS AND METHOD OF PRODUCTION OF SECURITIES | 1994 |
|
RU2110408C1 |
