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BOPP (biaxially oriented polypropylene)

The polymer film substrate for polymer-substrate banknotes (Australia, New Zealand, UK, Canada). Distinguished from cotton-linen paper notes by FTIR-ATR (CH3 methyl peaks dominant; no cellulose signature) and from other polymer films by characteristic isotactic PP band at 997 cm-1.

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Intaglio printingOptically variable ink (OVI)Cotton-linen substrateEuropol PEX (Project Ester)FICN (Fake Indian Currency Notes)Fluorescent security inkGoniospectrophotometryKINEGRAMLatent imageMicroprinting / microtextMulti-tone watermarkSecurity thread

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