Study on the Binder Distribution related to Drying

Abstract

The main aim of this study was to obtain the relationship between drying method and binder distribution in the z-direction. The results implied that it was reliable and effective method using LSCM to characterize the z- directional distribution of binder and analyze the influence of dry method on binder migration. The results indicated that the dry method was critical to binder distribution in coated paper and vacuum drying accelerated binder migration to the base paper. Infrared drying was good to producing little binder migration towards the interior of base paper, but infrared drying was disadvantageous to even binder distribution. Based on the results presented in this study, infrared drying seemed to be less desirable because it produced more uneven binder distributions that could potentially result in larger printing defects. Vacuum drying resulted in more even changes of binder distribution, which would produce better print smoothness.