| 摘要 |
FIELD: process engineering. ^ SUBSTANCE: proposed counterfeit-protected symbol consists of, at least, one layer reflecting electromagnetic waves, one polymer separating layer and one layer made up of metal clusters. One or more of above listed layers, apart from variable-colour effect initialization, provide for protection that can be physically checked up, when infringed upon, by optical and/or electrical conductance and/or magnetic and/or court expert trial methods. ^ EFFECT: higher degree of protection. ^ 33 cl, 7 dwg, 7 ex |
