D21H5/0032 - 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 with a roller Details thereof, e.g. surface characteristics, peripheral speed

• D21H5/0035 » {the coating material on the applicator roller being subjected to a particular treatment before applying to paper} 0
• D21H5/0037 » {Reverse roll coating, e.g. applicator surface moving in direction opposite to that of paper} 1