Abstract
Three test methods for the determination of the coefficient of friction of paper have been investigated : inclined-plane, horizontal-plane and strip-on-drum. Significantly different friction values were obtained for the same paper samples by each of the tests and the reasons for some of these differences were studied. Aspects such as contact deformation, contact pressure, testing procedures both environmental and mechanical and the presence of extractives were found to influence the frictional properties of paper and board.
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