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Holz als Roh- und Werkstoff

, Volume 53, Issue 1, pp 21–23 | Cite as

Optimum steam pretreating technique of chips for manufacturing of particleboards

  • Liping Cai
  • Fengfu Wang
  • Jian Li
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Abstract

Highly dimensionally stable wood based particleboards were produced by pretreated chips with saturated steam at elevated pressures. In this work, the wood chips of birch (B. Platyphylla) were used and determination of optimum steam pressure and steam pretreating time were formulated as a constrained nonlinear programming problem. The results showed that the optimum technique parameters for steam pretreating birch chips were about 1.275 MPa in steam pressure and 6 min. in steam pretreating time.

Keywords

Steam Wood Chip Internal Bond Steam Pressure Thickness Swell 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Optimierung der Dampfvorbehandlung der Hackschnitzel für die Spanplattenherstellung

Zusammenfassung

Spanplatten mit hoher Dimensionsstabilität wurden hergestellt aus Hackschnitzeln, die mit Heißdampf bei erhöhtem Druck behandelt waren. Für diese Untersuchungen wurde Birkenholz (Platyphylla) verwendet. Die Bestimmung des optimalen Preßdrucks und der Vorbehandlungszeit wurden als nichtlineares Gleichungssystem behandelt. Das Optimum für Birkenhackschnitzel lag bei 1,275 MPa Preßdruck und 6minütiger Dampfvorbehandlung.

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6 References

  1. Beightler, C. S.;Phillips, D. T.;Wilde, D. J. 1979: Foundations of optimization. Second edition. Prentice-Hall, Inc., Englewood Cliffs, N.J.Google Scholar
  2. Hsu, W. E.;Schwald, W.;Schwald, J.;Shields, J. A. 1988: Chemical and physical changes required for producing dimensionally stable wood-based composites. Wood Sci. Technol. 22: 281–289CrossRefGoogle Scholar
  3. Rao, S. S. 1984: Optimization theory and applications. Second edition. Wiley Eastern Limited.Google Scholar
  4. Taylor, J. D. 1987: Commerical aspects of producing dimensionally stable wood composites. 21th Proc. Wash. State Univ. Inter. Particleboard/Compos. Materials Symposium. Pullman, WA: 237–251Google Scholar
  5. Vital, B. R.;Wilson, J. B.;Kanarek, P. H. 1980: Parameters affecting dimensional stability of flake-board and particleboard. Forest Prod. J. 30(12): 23–29Google Scholar

Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • Liping Cai
    • 1
  • Fengfu Wang
    • 1
  • Jian Li
    • 1
  1. 1.Northeast Forestry UniversityHarbinChina

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