- Original Article
- Published:
Development of an air-injection press for preventing blowout of particleboard II: improvement of board properties using small-diameter holes for air injection
Journal of Wood Science volume 57, pages 507–511 (2011)
Abstract
An air-injection press, which has holes punched in the heating plates, injects high-pressure air through the holes of one plate into boards during press heating. The air-injection press can manufacture boards from high-moisture-content particles by controlling blowouts of the boards. In this study, boards were manufactured from particles that had a moisture content of 25% by using the air-injection press, which reduced the required pressing time. Boards manufactured by injecting air through holes of 5 mm in diameter were of poor quality with a low internal bond strength of only 0.31 MPa. When the hole diameter was reduced to 1 mm, the internal bond strength increased to 0.44 MPa. A high air-injection pressure of 0.55 MPa also resulted in improved board properties over those for boards manufactured at lower pressures. This was probably because a large amount of binder was released from boards through the 5-mm holes, together with water vapor, during air injection; the small-diameter holes reduced the release of binder, resulting in better board properties.
References
Korai H, Ling N, Osada T, Yasuda O, Sumida A (2011) Development of an air-injection press for preventing blowout of particleboard I: effects of an air-injection press on board properties. J Wood Sci. doi: 10.1007/s10086-011-1191-0
Sasaki H (1996) Function of water vapor in manufacturing wood composites and its application (in Japanese). J Soc Mater Sci Jpn 45(4):363–368
Japanese Industrial Standard (2003) Particleboard. JIS A 5908-2003
Kawai S, Nakaji M, Sasaki H (1987) Production technology for low-density particleboard (V): influence of size and shape of chips fed into a knife-ring flaker (in Japanese). Mokuzai Gakkaishi 33:702–707
Kawai S, Suda K, Sasaki H (1987) Production technology for low-density particleboard (IV): effects of particle density and compaction ratio on board properties (in Japanese). Mokuzai Gakkaishi 33:385–392
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Korai, H., Ling, N. Development of an air-injection press for preventing blowout of particleboard II: improvement of board properties using small-diameter holes for air injection. J Wood Sci 57, 507–511 (2011). https://doi.org/10.1007/s10086-011-1210-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10086-011-1210-1