D21H5/0025 - CPC Classification

Special paper or cardboard not otherwise provided for; Processes or apparatus specially adapted for applying liquids or other fluent materials to finished paper or board, e.g. impregnating, coating by contact with a device carrying the treating material

• D21H5/0027 » {by a rubbing device, e.g. with brushes or pads} 1
• D21H5/003 » {with a roller} 3
• D21H5/004 » {the treating material being non-fluent at the moment of transfer, e.g. in form of preformed, at least partially hardened, coating} 0