backwards and forwards across the surface of the paper as it emerges from the calender rolls.
Boards may be coated in the same way as paper, provided the boards are not too thick. The thicker qualities are either coated on a modified machine, the looping being impossible, or coating by hand is resorted to. The boards are obtainable as one- or two-sided, with different degrees of surface, and with different coloured coatings. Coated boards are sometimes made by pasting coated papers to ordinary middles, and finishing by plate rolling.
Thin box boards for use as cartons for small goods, such as cigarette packets, are coated with a coloured coating in the manner already described.
Coloured cloth-lined cards are first manufactured as pasteboards, and are afterwards coated on the cloth side with the coloured coating, two applications being necessary in many cases to obtain the desired thickness and surface. Plate-glazing is the means of imparting the ordinary surface to this class of cards.
