METHOD FOR MANUFACTURING HOT-STAMPING SILVER PAPER Russian patent published in 1998 - IPC

FIELD: polygraphy. SUBSTANCE: polyethyleneterephthalate layer is subject to applying wax separating layer made of brown coal wax solution in organic solvent. Further, bronze powder is applied constituting a part of primer: aqueous suspension including polymer binding agent, filler, and, additionally, surfactants. More specifically, primer is made up of (in wt %): polyvinyl acetate dispersion, 4.0-5.0; polyvinyl alcohol, 0.1-0.6; starch, 0.04-0.1; Aerosil, 0.1-0.25; ochre, 3.5-4.3; bronze powder, 28- 32; polyoxypropylene, 1.8-2.5; a household detergent, 0.8-1.5; and water, the balance. EFFECT: increased resistance of prints to wear and setoff and improved environmental condition of the process.