Analysis of the Coating surface Properties of Coated Paper

Abstract

The surface properties of coating layer have an important influence on printing quality. In this research, the main objective was to investigate into the coating surface topography and characteristics related to binder. The surface microstructure and properties were explored in the method of numerical and visual analysis using mercury porosimetry measurment and optical contact angle measurement. The findings indicated that the binder content in the coating layer affected the pore size, depth and distribution of the coated paper surface. The conclusions were drawn that more amount of binder on the coating surface could contribute to improve the coating surface topography and the formation of even pore size and distribution, which was good to the paper surface properties and resulted in low roughness, high paper gloss, low ink absorption and high paper surface efficiency. Binder was critical to the surface topography and structure and characteristics, which played a major role in determining print gloss, print density and appearance of final printing.