1.3 Drying

After the coating process, the coated aluminium or copper foils proceed directly to the dryer. The coated foil is transported through a drying channel using rollers or levitation systems. In cases of simultaneous coating, an airborne dryer is utilized to prevent damage to the coating. Heat removes the solvent, which is subsequently recycled or reused for afterburning purposes. The length of the dryer dictates the maximum speed of the process. The drying channel comprises different temperature zones to establish a specific temperature profile. Toxic solvents are recovered and either processed or recycled. After passing through the dryer, the foil is cooled to room temperature and rewound into a "mother" roll.