Coating method and coating apparatus

An apparatus for coating a flexible substrate with at least a first organic layer and a first inorganic layer, the apparatus comprising

• a first and a second chamber,
• an atmosphere decoupling slot between the first and the second chamber,
• a deposition facility arranged in the first chamber, for depositing a curable mixture, the curable mixture comprising at least one precursor of a polymer, an oligomer or a polymer network and/or an initiator of polymerization,
• a curing facility arranged in the first chamber, for curing the deposited mixture, therewith forming the at least first organic layer,
• a condensation channel arranged between the first chamber and the atmosphere decoupling slot, the condensation channel being configured to cause vapors from the first chamber to condensate before the vapors enter the atmospheric decoupling slot,
• a vapor deposition facility arranged in the second chamber, for depositing the at least first inorganic layer, the vapor deposition facility including a cooling drum arranged inside said second chamber,
• a facility for guiding the flexible substrate from the second chamber via the atmosphere decoupling slot to the first chamber, wherein the at least first organic layer is applied at the at least first inorganic layer, characterized in that the length L of the atmosphere decoupling slot divided by the height of the atmosphere decoupling slot is in a range between 100 and 5000.