Abstract
This paper describes for a pushing-cut process of stacked multiple pieces of cardboard. The profile quality of wedged cardboards is empirically affected by the stacked structure and numbers of piece, the contact friction coefficient with each layer, the thickness of cardboard and blade tip profile. However, the sliding behavior of stacked cardboards is not almost discussed due to its complicated motion phenomena. In this work, therefore, the effects of mechanical conditions on the cutting characteristics of stacked postal cards of 0.22mm thickness were experimentally investigated by varying the stacked numbers of cardboard. A certain repeated force drop was observed. The dispersion of repeated force drop remarkably increased when the stacked number was larger than 7 pieces.
