However, proper pressing conditions and modified VDP
improved the bending strength of the subsequent samples.
The MOR for fibreboards in both RB and RC trials was approximately
15–25MPa, but still within the same density range,
namely 900–1000 kg/m3. The higher loading of hydrogen peroxide
(4%) in trials RB and RC yielded increased densities and
bending strengths. Almost all fibreboards above densities of
975 kg/m3 met the requirements in the MDF standard (EN 622-
5: 2006). The reference SMDF panels showed numerical MOR
values above 40MPa.