The Structure of Coated Duplex Board With Grey Back

Coated Duplex Board With Grey Back is a kind of network structure interwoven with various plant fibers. In this network structure, some fillers, sizing agents and colorants are added to the pores between the fibers to meet the inherent characteristics of the paper itself. Adding fillers can enhance the whiteness, smoothness and opacity of paper. Adding sizing compound is to give the paper a certain degree of water resistance and prevent it from being easily soaked by water or other liquids. Add colorants to make the white board paper have a higher whiteness. The pore structure of white board paper is the basis for the paper to absorb ink and is one of the key factors for crystal penetration drying in newspaper and periodical printing. Therefore, to understand the ink absorption of paper, it is necessary to first understand the pore structure of the paper. The pore structure of white board paper is closely related to the amount and speed of ink penetration, the smoothness of printing, the solidification and drying of ink penetration, as well as the quality of printed matter.