Investigation of the Friction of Different Papers and Prints.

Friction between different papers, flexographic and laser prints were investigated experimentally and static (SCOF) and kinetic (KCOF) friction coefficients between paper and paper, paper and prints, prints and prints were determined. The dependence of the the SCOF and KCOF values on the paper PPS roughness, paper grammage and ink content on prints was investigated. The results showed that highest friction is between paper and prints and lowest is between two prints. It was found that SCOF and KCOF deacrease with pressure. Static friction coefficient increases with paper roughness and kinetic coefficient remains constant. [ABSTRACT FROM AUTHOR]