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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Dimensional stability and strength properties of particleboard produced by a closed-press system

Journal of Wood Science volume 45, pages 402–410 (1999)Cite this article

Abstract

The purpose of this study was to reveal the effects of various levels of mat-moisture content (m.m.c.) and the closed-press system for making single- or three-layer particleboard on the density profile, thickness swelling, specific moduli of elasticity (MOE) and rupture (MOR) and internal bond strength. Internal gas pressure was measured in an enclosed frame; and the larger the m.m.c., the higher the internal gas pressure became. When rising water vapor (steam) struck particles, it plasticized them and cured the adhesive, resulting in improved interparticle contact. The vertical density gradient in the three-layer board was larger than that in the single-layer board. As for thickness swelling by cold-water soaking, the single-layer boards were less affected than the three-layer boards and showed good dimensional stability with increased m.m.c. The open-system boards swelled more than the closed-system boards. The closed-system single-layer board made at high m.m.c. returned nearly to the prime thickness by air-drying after cold-water soaking. Specific MOE and MOR were larger at 15% or 10% m.m.c. than those at other m.m.c. Considerable reductions of specific MOR and MOE of the closed-system three-layer board were observed at 20% or 25% m.m.c.

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Authors and Affiliations

  1. Composite Products Laboratory, Wood Chemistry Division, Forestry and Forest Products Research Institute, PO Box 16, 305-8687, Tsukuba Norin Kenkyu Danchi-nai, Ibaraki, Japan

    Hideaki Korai

  2. Hyogo Prefectural Forestry and Forest Products Research Institute, 671-2515, Ikaba, Hyogo, Japan

    Kimihiro Uemura

  3. Miyagi Prefectural Forestry Institute, 981-3602, Kurokawa-gun, Miyagi, Japan

    Takuji Esashi

  4. Faculty of Agriculture, Tokyo University of Agriculture and Technology, 183-8509, Fuchu, Tokyo, Japan

    Masaharu Suzuki

Authors
  1. Hideaki Korai
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  2. Kimihiro Uemura
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  3. Takuji Esashi
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  4. Masaharu Suzuki
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Correspondence to Hideaki Korai.

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Korai, H., Uemura, K., Esashi, T. et al. Dimensional stability and strength properties of particleboard produced by a closed-press system. J Wood Sci 45, 402–410 (1999). https://doi.org/10.1007/BF01177913

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  • DOI: https://doi.org/10.1007/BF01177913

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