印刷书写纸一般都经表面施胶处理,涂布纸的产量和质量也都在提高,因此有必要对表面施胶处理及涂布原纸的液体吸收特性进行控制。日本已开发和实际应用了新型的松香酸系施胶剂,在其他一些国家,液态烷基烯酮二聚体(AKD)已经实用化。但是,基本上都是以强化松香胶、AKD、烯基琥珀酸 Printing and writing paper are generally surface sizing treatment, coated paper production and quality are also increased, it is necessary to control the surface sizing treatment and coating liquid absorption characteristics of the base paper. In Japan, a new type of rosin acid sizing agent has been developed and put into practical use. In some other countries, liquid alkyl ketene dimer (AKD) has been put into practical use. But, basically, all of them are reinforced rosin gum, AKD, alkenyl succinic acid