| 摘要 |
FIELD: protection of documents. ^ SUBSTANCE: protective element for documents as a whole and in particular for bank notes, pass cards and similar documents contains carrying layer, which has at least on one side continuous layer of material with metallic properties. Aforementioned continuous layer of material with metallic properties contains at least one zone, thickness of metal in which is less relatively to surrounding portions with provision of its visual difference from surrounding portions, or vice versa. ^ EFFECT: creation of cheap, easily discernible protective element not subject to destruction due to preservation of metallic integrity. ^ 5 cl, 4 dwg |
