Polymer banknotes continue to expand in more markets because they last longer, stay cleaner, and handle humidity better. Their spring-back and thickness differ from paper notes, so old strapping pressure can over-tighten bundles or leave uneven seals.
Vendors and cash centers are creating separate settings for polymer notes, including compression time, heat-press temperature, and strap tension. Machines that can fine-tune horizontal binding positions are especially useful during changeover.
In countries that circulate both paper and polymer notes, more flexible automation reduces changeovers and rework.