Investigation of the Effect of Rubber Based Offset Ink printed on packaging Cardboard on the Strength Properties of Packing Cartons
Dogan Tutak, Bekir Keskin, Said Abubakr, Paul D. Fleming III

Abstract
Paperboards show different behaviors due to their structures. For example, if the paperboard thickness increases its strength increases. Different applications can affect paperboard structure especially coatings and inks. Because of this reason, in this study, the effect of offset printing ink on cardboard strength was investigated. In order to control the ink coated paperboard strength properties after printing, different types of paperboards were used with different grammage, thickness and surface properties. Paperboard samples were 1-ply, 2-ply, 3-ply and 5 different grammages as 215, 240, 250, 290 and 350 g/m2.All samples were printed with a one-unit offset printing machine. After drying, tensile, elongation, stiffness, tear and bursting tests were performed on the both printed and unprinted paperboards according to TAPPI standards. The paperboards showed different behaviors according to the applied tests. Some of them show significant changes, but some of them do not. The printed and unprinted sample values were compared only for the same paperboard grades.

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