A novel technique for the evaluation of paperboard performance in press-forming

To validate the performance of the device, a number of solid bleached paperboard (SBB) materials were selected to represent different kinds of coated paperboard structures in order to obtain a comprehensive general view of the phenomena occurring in the tray-pressing process. The friction coefficients of the test materials were measured by two different methods Force values obtained with the measurement device were used to calculate the friction coefficients and these were also obtained by a standard laboratory test method. The measurement device was also utilized to detect rupturing during the forming of the paperboard trays.