Evaluation of compressive test methods for paper using a mathematical model, based on compressive test for corrugated board

Abstract

There are several methods for the measurement compressive strength of linerboard and fluting medium
paper. The results of different method can vary up to 30% and more for same material sample
and the biggest challenge is to determine compressive strength uninfected by other properties. It still
isn’t specified which method is technically more correct. The Short-Span Compressive Test (SCT)
method is assumed to be more accurate. However, the Ring Crush Test (RCT) method is still widely
use despite that it is established it is affected by buckling load of test specimen. In this study these two
different methods were performed to measure the compressive strength of corrugated board’s components.
The results were implemented in Maltenfort equation for prediction of board compressive
strength. The accuracy of methods was evaluated by comparing predicted compressive strength with
measured board edgewise compressive strength (ECT). The result confirmed that SCT method is
more successful for predicting compressive strength of corrugated board and therefor, more accurate.