Official Journal of the Japan Wood Research Society
Table 1 Effects of pre-pressing and post-pressing on board performance
Pressing temperature (°C) | Pressing schedule | Pressing type | No. | MOR (MPa) | IB (MPa) | TS (%) |
|---|---|---|---|---|---|---|
190 | First 2 min, no air injection; last 8 min, air injection | Pre-pressing | 1 | 13.1 (1.67) | 0.16 (0.04) | 37.6 (2.90) |
First 1 min, no air injection; last 8 min, air injection | Pre-pressing | 2 | 16.5 (0.85) | 0.23 (0.03) | 34.4 (4.71) | |
8 min, air injection | 3 | 13.5 (1.02) | 0.43 (0.06) | 36.2 (5.94) | ||
First 8 min, air injection; last 1 min, no air injection | Post-pressing | 4 | 13.1 (1.62) | 0.40 (0.09) | 44.1 (7.11) | |
First 8 min, air injection; last 2 min, no air injection | Post-pressing | 5 | 14.1 (1.85) | 0.36 (0.06) | 38.2 (5.52) | |
210 | First 2 min, no air injection; last 8 min, air injection | Pre-pressing | 6 | 17.4 (1.86) | 0.35 (0.07) | 36.9 (1.57) |
First 1 min, no air injection; last 8 min, air injection | Pre-pressing | 7 | 17.6 (2.59) | 0.31 (0.12) | 34.4 (3.10) | |
8 min, air injection | 8 | 15.0 (0.52) | 0.60 (0.08) | 35.2 (4.49) | ||
First 8 min, air injection; last 1 min, no air injection | Post-pressing | 9 | 15.5 (2.89) | 0.52 (0.10) | 34.3 (3.72) | |
First 8 min, air injection; last 2 min, no air injection | Post-pressing | 10 | 16.4 (1.48) | 0.50 (0.06) | 32.9 (3.16) |