FIELD: production of valuable paper used for manufacture of banknotes and similar papers. SUBSTANCE: protective member is adapted for full or partial insertion into valuable paper and comprises elongated strip of light-permeable polymer substrate. Light-reflective metal layer in the form of pattern composition is applied to at least one side of polymer substrate. Pattern composition has at least one repeated geometric pattern, wherein at least one frequency, current pattern amplitude and/or maximal pattern amplitude varies along reflective member length. Pattern composition has at least one non-linear border. EFFECT: improved protection from counterfeit without loss of aesthetic characteristics. 18 cl, 17 dwg
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Authors
Dates
2002-09-20—Published
1998-03-31—Filed