The relationships between tensile properties and the bonded area of paper were studied by correlation analysis and graphically represented.
The squares of tensile strength and breaking length or tensile energy absorption are highly correlated with the bonded area of paper.
The regression lines, represented graphically, almost showed linear relations. By introducing the survey of rupture energy into the analysis of mechanical properties of paper, it was found that, in many cases, linear relations exist between the rupture energies and bonding areas of paper.