Material web layering method using a curtain applicator

An apparatus for applying at least one first layer of a first application medium and at least one second layer of a second application medium to a material web, each of the first application medium and the second application medium being one of a liquid medium and a pasty medium, the material web having a web surface, the at least one first layer and the at least one second layer being first applied onto a moving base, the moving base being the web surface in the case of direct application thereof, the moving base being a transfer element in the case of indirect application thereof, the transfer element being configured for transferring each said at least, one first layer and each said at least one second layer applied thereon to the web surface of the material web, said apparatus comprising:

• a first curtain applicator unit including a first discharge nozzle, said first curtain applicator unit configured for discharging the firs:
• application medium through said first discharge nozzle in a form of a first curtain onto the moving base, the first curtain moving substantially under the force of gravity;
• and
• a second curtain applicator unit including a second discharge nozzle, said second curtain applicator unit configured for discharging the second application medium through said second discharge nozzle in a form of a second curtain onto the moving base, the a second curtain moving substantially under the force of gravity, said first applicator unit being positioned relative to said second applicator unit such that a spacing of about 100 mm to about 500 mm separates the first curtain and the second curtain.