# Experimental Investigation of Vertical Density Profile of Medium Density Fiberboard in Hot Press
## 3 Results and Discussions
### Experiment No. 2  
Figure 9 shows the vertical density profile of X-ray graphs in 2 nd specimen, whereas Tables 8-11 illustrate the detailed experimental data at temperature = 205 \({}^{\circ}\)C, cycle time = 270 s, pressure = 155 bar, moisture content = 10.00%.  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline  & Average & & 850 & kg/m3 \\ \cline{2-5}  & Min. & Valve & 652 & kg/m3 \\ \cline{2-5}
**Density** & & Position & 5.392 & mm \\ \cline{2-5}  & Max. Left & Valve & 849 & kg/m3 \\ \cline{2-5}  & Max. Right & Position & 0.560 & mm \\ \cline{2-5}  & Max. Right & Valve & 851 & kg/m3 \\ \cline{2-5}  & Position & 0.713 & mm \\ \hline
**Ratio** & Min./Avg & & 81.10 & \% \\ \hline \multirow{2}{*}{**Gravimetric**} & Width & & 50 & mm \\ \cline{2-5}  & Depth & & 50 & mm \\ \cline{2-5}  & Weight & & 29.21 & g \\ \hline \hline \end{tabular}
\end{table}
Table 7: Experimental data of 1 st sample.  
Figure 9: X-ray vertical density profile of 2 ndspecimen.  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Sample**} & **P.max** & **Strength** & **Sample Weight** & **Density** \\  & **N** & **N/mm2** & **(g)** & **kg/mm3** \\ \hline Middle M1 of & & & & \\ right & 1167 & 0.47 & 26.26 & 657 \\ Middle M2 & 1219 & 0.49 & 26.01 & 650 \\ Middle M3 & 1075 & 0.43 & 25.56 & 639 \\ Middle M4 & 1200 & 0.48 & 25.98 & 650 \\ Middle M5 & 1115 & 0.45 & 26.11 & 653 \\ Average & & 0.46 & 650 \\ \hline \hline \end{tabular}
\end{table}
Table 10: Internal bonding test results.  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**S.No.**} & **Density** & **Piece** & **Weight** & **Length** & **Width** & **Thickness** \\  & **Kg/m3** & **No** & **(g)** & **(mm)** & **(mm)** & **(mm)** \\ \hline
1 & 687 & L1 & 256.66 & 200 & 100 & 18.68 \\
2 & 655 & L2 & 245.13 & 200 & 100 & 18.71 \\
3 & 654 & L3 & 244.23 & 200 & 100 & 18.66 \\
4 & 653 & L4 & 243.67 & 200 & 100 & 18.65 \\
5 & 657 & L5 & 244.54 & 200 & 100 & 18.61 \\
6 & 663 & L6 & 245.98 & 200 & 100 & 18.56 \\
7 & 657 & R6 & 244.45 & 200 & 100 & 18.59 \\
8 & 659 & R5 & 243.98 & 200 & 100 & 18.52 \\
9 & 659 & R4 & 244.45 & 200 & 100 & 18.55 \\
10 & 658 & R3 & 244.98 & 200 & 100 & 18.61 \\
11 & 661 & R2 & 246.56 & 200 & 100 & 18.64 \\
12 & 688 & R1 & 257.76 & 200 & 100 & 18.72 \\ \hline \hline \end{tabular}
\end{table}
Table 8: Density profile across thickness.  
\begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Sample**} & **P.max** & **Strength** & **Sample Weight** & **Density** \\  & **N** & **N/mm2** & **mm** & **(g)** & **kg/mm3** \\ \hline Middle M1 of & & & & \\ right & 1167 & 0.47 & 26.26 & 657 \\ Middle M2 & 1219 & 0.49 & 26.01 & 650 \\ Middle M3 & 1075 & 0.43 & 25.56 & 639 \\ Middle M4 & 1200 & 0.48 & 25.98 & 650 \\ Middle M5 & 1115 & 0.45 &  
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**Sample**} & **P.max** & **Strength** & **Span** & **Sample Weight** & **Density** \\  & **N** & **N/mm\({}^{2}\)** & **mm** & **(g)** & **kg/mm\({}^{3}\)** \\ \hline Middle M1 of & 687 & 25.76 & 320 & 201.13 & 679 \\ right & 676 & 25.35 & 320 & 197.52 & 667 \\ Middle M2 & 695 & 26.06 & 320 & 195.63 & 661 \\ Middle M4 & 703 & 26.36 & 320 & 198.98 & 672 \\ Middle M5 & 707 & 26.51 & 320 & 200.23 & 676 \\ Average & & 26.01 & & & 671 \\ \hline \hline \end{tabular}
\end{table}
Table 17: Bending tests.  
Figure 11: X-ray vertical density profile of 4 thspecimen.