The effect of binders and modified precipitated calcium carbonate on ink absorption behavior in a multilayered coating layer

Abstract

The effect of binders and modified precipitated calcium carbonate on ink absorption behavior and print quality in multilayered coating layers was studied. Also the effect of the number of multilayer was investigated, the target being on determining the role of the deposited hydrophilic binder layer. The coating layers of anionic NaCMC and cationic PCC were alternately spray-coated onto the substrate. It was found that a small amount of binder in the outer coating layer improved the print quality, whereas thicker binder layers closed the pores and reduced the print quality. The effect of the first hydrophilic pre-coating layer on ink spreading and absorption in the three-structure coating was relatively small although better than the reference which was free from a pre-coating.