Bursting strength in some physical properties of fiberboard is recognizeｄ ａs the ｓｔａｎｄａｒｄ ｐroｐeｒｔｙ ｉｎ many case still now. We have studied systematically some physical properties of filberboards,corrugated fiberboard sheets,and corrugated fiberboard boxes,and considered whether bursting strength should be or not be the standard property in physical properties. Consequently we found the compression strength of the box,which is the most important property in the logstics,is proportional to the composite ring crush strength of top linerboard,back linerboard and corrugating medium × take-up ratio (AF:1.53) or the edge crush strength of the corrugated fiberboard sheets. But the compression strength of the box is not proportional to both total bursting strength of composed fiberboards or corrugatedfiberboard sheet. Therefore we have confirmed that the ring crush strength of fiberboard will be more inportant in estimaing the compression strength of corrugated fiberboard box in future.

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