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Roll-2-Roll

 
The idea behind roll-2-roll imprinting is to implement all the advantages of nanoimprint lithography and hot embossing into a high volume production platform on large rolls of polymer thin film. Both imprinting into thermoplastic materials and UV curable materials are used in roll-2-roll setups.
 
One of the main challenges with roll-2-roll imprinting is to make the cylindrical shaped molds. For imprinting into thin thermoplastic films, typical 50-100 µm thick, Nickel shims are made by Nickel electroplating from a planar master and subsequently bend around a cylindrical drum. For imprinting into a UV curable material on a carrier polymer film where a transparent mold drum is required, the cylindrical mold is typically made by bending a thin polymer stamp around the transparent drum.
 
Roll-2-roll tools can today produce more than 5 m of imprinted polymer thin film per minute with a resolution below 100 nm.
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