Effects of base papers containing nonwood pulp on the properties and printability of coated papers (I) - Bamboo Bleached Kraft Pulp

This study was carried out to investigate the effect of the type of base papers containing Sw-BKP, Hw-BKP and Bamboo-BKP on the properties and printabilities of coated papers. Also, it was intended to evaluate the effect of coated paper prepared with anionic and amphoteric latex based coating color. The results obtained from this study were as follows. The fiber length of Bamboo-BKP was observed longer than that of the Hw-BKP and shorter than that of the Sw-BKP. This has effect on physical properties. Therefore, the results of measuring physical properties were higher than those of the Hw-BKP and lower than those of the Sw-BKP. Also, in the case of mixing ratio of Sw-BKP, physical properties tended to be slightly higher with the increase in the mixing ratio. Considering the optical properties of base papers, the highest opacity was obtained in case of the Hw-BKP and the second appeared Bamboo-BKP. On the other hand, smoothness, roughness and air permeability of Bamboo-BKP were lower than those of wood pulp and the optical properties of coated papers tended to show the similar with those of base papers. The ink receptivity and print gloss of the coated papers for Bamboo-BKP were lower than those of wood pulp. As the mixing ratio of Sw-BKP was increased, the properties and printabilities were improved slightly. Meanwhile, amphoteric latex was improved the optical properties and printability of coated papers.