Banknotes face challenging circulation conditions: sweaty palms, varied handling practices, humid climates and even washing machines can affect their longevity.
Polymer banknotes are non-porous and more durable than paper banknotes, which absorb moisture and dirt, quickly becoming soiled and limp.
The circulation life of a polymer banknote is around four times that of paper.
For example, Australia's paper $10 note had an average life in circulation of eight months. Today, by contrast the polymer $10 lasts at least 30 months.
The experience is similar in Papua New Guinea: the average life of the 2 Kina polymer note is now 24 months compared to the paper note's four to six months.
So why does polymer outlast paper? It is stronger, non-porous and non-fibrous.
Polymer notes have passed rigorous laboratory trials, a range of industry-recognised tests and specially designed simulations. But the real test is in their everyday use.
With an added protective overcoat, polymer banknotes remain impervious to moisture and resist water, oils, beverages, sweat, and common household chemicals.
Polymer notes endure temperatures up to 120°C with no significant impact, making them eminently suitable for hot and humid climates - and they perform equally well in cold climates.
Increasingly, the public is showing a preference for banknotes over coins - even in some lower denominations. With their increased durability, polymer notes are a better solution to paper.
Polymer banknotes have major cost advantages over paper notes. With polymer notes lasting around four times longer than paper, they only need to be replaced a quarter as often.
Naturally, this results in major savings in re-ordering, processing, withdrawal, destruction and redistribution costs.
 Polymer banknotes are impermeable to water and suitable for use in humid conditions. |
 The tensile strength of polymer is far greater than paper. |
 Cost effectiveness of polymer notes compared with paper notes over time. |
