Effect of oil based CMYK process inks on tearing characteristics of paper

Every day we use many different kinds of printed materials exposed to tearing stresses. interactions between paper and printing inks affect the inter-fiber bonds, accordingly the tearing properties of paper. this study was carried out to determine the effect of tearing resistance properties of papers printed with solid tone oil based sheed-fed offset inks, using cyan, magenta, yellow, black process series. the static tearing resistance of paper was determined by universal tensile testing device and tearing strength patterns was examined. decrease of tear resistance and relatively close tear index ratios (cross direction / machine direction) was observed for printed papers. printing application of solid tone oil based inks increases the force required for initiation of tearing of papers.