Abstract: The invention relates to an apparatus to produce coated paper, cardboard or other fibrous webs with at least one thermo-sensitive layer as a functional layer through the application of at least one liquid or paste-like thermo-sensitive coating medium onto a carrier web by way of a unit which forms a functional layer, the units each include at least one applicator device and one drying section following the applicator device. The two units are capable of being installed in series and each form at least one functional layer on the carrier web, whereby in the merging area between the two functional layer forming units a web turning device is located, creating a first web path and a device to bypass the web turning device, thus creating a second web path for the carrier web between the two functional layer forming units. The invention further relates to a method to operate an apparatus of this type.

Abstract: The invention relates to an apparatus to produce coated paper, cardboard or other fibrous webs with at least one thermo-sensitive layer as a functional layer through the application of at least one liquid or paste-like thermo-sensitive coating medium onto a carrier web by way of a unit which forms a functional layer, the units each include at least one applicator device and one drying section following the applicator device. The two units are capable of being installed in series and each form at least one functional layer on the carrier web, whereby in the merging area between the two functional layer forming units a web turning device is located, creating a first web path and a device to bypass the web turning device, thus creating a second web path for the carrier web between the two functional layer forming units. The invention further relates to a method to operate an apparatus of this type.

Abstract: The invention relates to an apparatus to produce coated paper, cardboard or other fibrous webs with at least one thermo-sensitive layer as a plurality of functional layer through the application of at least one thermo-sensitive coating medium onto a carrier web by way of a functional layer forming unit, including at least one applicator device and one drying section. The first functional forming unit includes an applicator device in the embodiment of a multi-layer curtain coater with at least one delivery nozzle and a drying section located after it. The second functional layer forming unit also includes an applicator device in the embodiment of a multi-layer curtain coater with at least one delivery nozzle and one drying section located after it, there is a first web path that including the applicator device of the second functional layer forming unit, as well as a second web path and means to bypass the applicator device are provided.