The graphic shows the temperature rate - of - rise fo 10 press cycles with a package of 5 plies of Ahlstrom BluPad HT 215 gsqm each on both top and bottom of a press opening. Pressure 300 psi.

The rate of rise shows a very similar pattern from cycle 1 to 10. Also the rate - of - rise for a one time pressing with Kraft paper of the same weight shows an identical pattern.

The above proves that the rate - of - rise does not change from cycle to cycle and that BluPad HT can be used at least 10 times. It also shows that it can replace Kraft paper of the same weight without changing the temperature pattern.