curtain coating meaning

[Architecture]
The application of paint by passing the object being coated under a continuous falling sheet of paint.
[Chemical engineering]
"A method in which the substrate to be coated with low-viscosity resins or solutions is passed through, and is perpendicular to, a freely falling liquid curtain."

woodworking machines . curtain coating machines . nomenclature
woodworking machines-nomenclature for curtain coating machines
05 . 03 weight of wax applied during curtain coating operation, test for
standard test method for weight of wax applied during curtain coating operation
Curtain coating is a pre-metered coating method, which means that the exact amount of coating needed to coat the substrate can be calculated before the process is actually accomplished.