| 摘要 |
<p>The invention relates to paper technology, and to products which are protected against counterfeiting, such as identification documents, bank cards and tokens serving as substitutes for banknotes. The technical result is that of producing banknote substitutes based on laminated plastics containing protective elements and being highly resistant to attack and mechanical wear during use, and reducing the production cost thereof. The counterfeit-proof multi-layered product comprises paper sheets with protective elements, said sheets being impregnated with a polymer binder, and also outer polymer layers. The paper sheets are impregnated throughout in a thermoset polymer melt or a thermoplastic polymer melt and the surfaces of each sheet are coated with a polymer layer; furthermore, the surfaces of the product are embossed. The method for producing a multi-layered product comprises impregnating paper sheets with protective elements using a thermoset polymer melt or a thermoplastic polymer melt or mixtures thereof, drying with partial polymerization, assembling a stack of impregnated sheets, hot-pressing and laminating the stack while simultaneously forming a surface relief and cutting out products of a specified geometric shape.</p> |
