METHODS OF MANUFACTURING IMAGE INSIDE LAMELLAR STRUCTURE (VARIANTS) AND LAMELLAR STRUCTURE OF A SAFETY DOCUMENT Russian patent published in 1997 - IPC

Abstract RU 2074097 C1

FIELD: safety documents. SUBSTANCE: invention relates to an image-containing lamellar structure manufactured by the technique of printing image on layer of high-temperature adhesive covering a transparent medium layer. Image is printed on nonflowing carbon or carbon-containing adhesive layer. Combination of transparent medium, high-temperature adhesive, and image is further joined with a carrier using thermal process to produce a lamellar carrier-transparent layer structure. The image is not destroyed in thermal joining process but keeps being clearly visible through transparent medium. Typical transparent medium is polyester film or a sheet of glass beads dispersed in adhesive. One or more additional layers may be attached to carrier to confer lamellar structure more rigidity. EFFECT: safe storage of documents ensured. 17 cl, 2 dwg

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RU 2 074 097 C1

Authors

Ehdvard Stenli Radkliff[Au]

Dates

1997-02-27Published

1990-04-27Filed