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Official Journal of the Japan Wood Research Society

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Effect of board density on bending properties and dimensional stabilities of MDF-reinforced corrugated particleboard

Abstract

We investigated the bending properties of composite boards produced by reinforcing both sides of corrugated particleboard with medium-density fiberboard (MDF). Thickness swelling and linear expansion (LE) were measured to assess the dimensional stabilities of the composite board. Although the apparent density of the composite board was 0.48 g/cm3, its strength was found to be equivalent to that of 18-type particleboard as described in JIS A 5908. The board’s parallel/perpendicular anisotropy in strength was 0.9. The modulus of rupture (MOR) of the composite board increased with board density only up to a certain density, beyond which the MOR was constant. On the other hand, the thickness swelling of both corrugated particleboard and the composite board was smaller than that of flat-type particleboard, satisfying the JIS A 5908 standard of 12%. Linear expansion (soaking in water of ordinary temperature for 24 h) of corrugated particleboard was 0.7%–0.9% in the parallel direction and 2.1%–3.1% in the perpendicular direction; hence, anisotropy in linear expansion existed in the corrugated particleboard. The linear expansion of the composite board was 0.6%–0.9% in the parallel direction and 1.8%–2.5% in the perpendicular direction. Although the LE of the composite board was lower than that of corrugated particleboard, it is necessary to improve the LE of composite board for practical use.

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Correspondence to Koji Hayashi.

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Hayashi, K., Ohmi, M., Tominaga, H. et al. Effect of board density on bending properties and dimensional stabilities of MDF-reinforced corrugated particleboard. J Wood Sci 49, 398–404 (2003). https://doi.org/10.1007/s10086-002-0501-y

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Key words

  • Corrugated particleboard
  • Composite board
  • Bending strength
  • Dimensional stability