幾何特性からみたプレスドライシートの力学的性質

抄録

A press dried paper manufacturing method has been investigated in terms of its quantifiable internal structure factors (sheet geometry). This method provides greater utilization of high-yield, low conformability fiber which is used for paperboard, and flexural rigidity is a very important property of paperboard made by the method. Despite the many studies on press drying, however, the reason for the higher mechanical properties provided is not yet clear. The present study resulted in one conceivable answer to this unsolved problem in terms of uneven mass distribution along the thickness direction of the press dried sheets.
Researching sheet geometry is very helpful to detect something hidden behind the mechanical properties. This study is a good example of the linking of mechanical properties with sheet geometry and has been investigated by this group for several years.