| 摘要 |
FIELD: printing industry.SUBSTANCE: invention relates to the basis for production of valuable documents with at least one recess, to a valuable document with such a basis, and also to a method of manufacturing such a basis. The basis for manufacturing of valuable documents (1) has a first layer (5) with a first transmission coefficient and with at least one recess (4) in the area of which the first layer has a second transmission coefficient which is greater than the first transmission coefficient, at that on the reverse side and/or the front side of the base the coating layer (7) is applied with a third transmission coefficient which is less than the second transmission coefficient.EFFECT: creation of a basis for valuable documents, which would be cost-effective in manufacturing, and which would enable to create additional security features and thus would enable to increase the degree of protection against counterfeiting.14 cl, 7 dwg |
