| 摘要 |
FIELD: production of bank notes and other securities needing protection against-forgery. SUBSTANCE: microparticles are deposited by spraying by nozzles with a mixture with compressed air on the first layer of paper and then are closed with the second layer, the nozzles are installed in any place in the width of the paper cloth to the zone of suction of moisture from the first layer. EFFECT: reduced labor content and reduced possibility of paper forgery. 1 dwg |
