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- Title
Effects of air injection on properties of particleboard manufactured using a radio-frequency hot press.
- Authors
Korai, Hideaki; Osada, Takayoshi; Sumida, Atsushi
- Abstract
The effectiveness of air injection for preventing the blowout of particleboards manufactured using a radio-frequency hot press was investigated by evaluating the board properties under artificially created conditions that were conducive to blowout. For evaluation, 10-mm-thick boards with densities of 0.7 and 0.8 g/cm and 20-mm-thick boards with a density of 0.7 g/cm were manufactured. Pressing times for the 10-mm-thick boards were 2, 4, 6, and 8 min, and those for the 20-mm-thick boards were 4, 6, 8, and 10 min. Without air injection, blowout occurred in all manufactured boards. With air injection, however, blowout did not occur in the 10-mm-thick boards with a density of 0.7 g/cm. Moreover, air injection prevented blowout even when the board density and board thickness were increased to 0.8 g/cm (for 10-mm-thick boards) and 20 mm (the density was kept at 0.7 g/cm), respectively. Air-injection radio-frequency pressing reduced the pressing time from 4 to 2 min for 10-mm-thick boards, and from 6 to 4 min for 20-mm-thick boards. Moreover, this reduction in the pressing time was achieved without a large reduction in the internal bond strength of the boards.
- Subjects
PARTICLE board; HOT pressing; RADIOFREQUENCY heating; BOND strengths; WOOD chemistry
- Publication
Journal of Wood Science, 2014, Vol 60, Issue 1, p66
- ISSN
1435-0211
- Publication type
Article
- DOI
10.1007/s10086-013-1358-y