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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Evaluation of the self-bonding ability of sugi and application of sugi powder as a binder for plywood

Journal of Wood Science volume 56, pages 194–200 (2010)Cite this article

Abstract

Binderless particleboards were manufactured from sugi (Cryptomeria japonica D. Don) heartwood and sapwood by hot-pressing (pressure: 5 MPa; temperatures: 180°, 200°, and 220°C; times: 10, 20, and 30 min), and the board properties [internal bonding (IB), thickness swelling (TS), water absorption (WA)] were investigated to evaluate the self-bonding ability. The IB, TS, and WA of the boards from sugi heartwood were better than those of the boards from sugi sapwood at any hot-pressing condition. Therefore, it was suggested that the self-bonding ability of sugi heartwood was superior to that of sugi sapwood. Then, sugi heartwood and sapwood powder with grain size 10 βm were used as a binder for plywoods. Four kinds of plywood were manufactured from the combination of powder and veneer, both of which were prepared from sugi heartwood and sapwood under the same hot-pressing conditions as the binderless particleboard, and the adhesive shear strength and wood failure of the plywood were investigated. As a result, the plywood composed of sugi heartwood veneer met the second grade of JAS for plywood, when either powder was used as a binder, when they were pressed at 200°C for 20–30 min and 220°C for 10 min.

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Authors and Affiliations

  1. Department of Global Agricultural Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan

    Motoe Ando & Masatoshi Sato

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  1. Motoe Ando
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  2. Masatoshi Sato
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Correspondence to Motoe Ando.

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Ando, M., Sato, M. Evaluation of the self-bonding ability of sugi and application of sugi powder as a binder for plywood. J Wood Sci 56, 194–200 (2010). https://doi.org/10.1007/s10086-009-1096-3

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  • DOI: https://doi.org/10.1007/s10086-009-1096-3

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