METHOD FOR MANUFACTURING PROTECTED IMPORTANT DOCUMENT AND IMPORTANT DOCUMENT

摘要

FIELD: important documents manufacturing technologies. ^ SUBSTANCE: method includes using filament of resilient profiled plastic with applied protective elements, and before insertion of filament into network along network cylinder, ring-shaped, continuous and/or discontinuous grooves with slanting walls are formed. ^ EFFECT: higher trustworthiness. ^ 5 cl, 7 dwg