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One press cycle production of fiberboard with unsymmetrically distributed densities

Herstellung von Faserplatten mit asymmetrisch verteilter Plattendichte in einem Pressprozess

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Abstract

With an arrangement of two different densities in a fiberboard according to the newly developed Dascanova Technology a significant amount of raw material could be saved. In this part of the study a production possibility of fiberboard with dual density was investigated. The aim of this research is to produce the highest possible difference between densities formed in one press process. Various methods described by different resin systems, additives, moisture contents and modified raw materials were used for this purpose. The highest difference of 80% between two densities was reached by a combination of more input parameters. These influences and a description of the hardening process during one press cycle are presented in detail in this study.

Zusammenfassung

Mit einer intelligenten Verteilung zweier unterschiedlicher Dichten in einer Faserplatte mittels der neu entwickelten Dascanova Technology konnte ein wesentlicher Teil des Ausgangsmaterials gespart werden. In dieser Studie wurde die Produktionsmöglichkeit einer Faserplatte mit zwei Dichteschichten untersucht. Ziel dieser Untersuchung war die Herstellung der höchst möglichen Differenz zwischen zwei Dichten in einem Pressprozess. Mehrere Methoden wie z.B. die Verwendung verschiedener Klebstoffsysteme, Zusatzstoffe, Holzfeuchte und der Rohmaterialzusammensetzung wurden zu diesem Zweck eingesetzt. Der höchste Unterschied von 80% zwischen zwei Dichten wurde durch die Kombination mehrerer Parameter erreicht. Deren Einflüsse und Beschreibung des Härteprozesses in einem Presszyklus werden in dieser Studie detailliert präsentiert.

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Acknowledgements

The authors would like to thank the Competence Center Wood K plus GmbH Linz, Dynea Austria GmbH and Kronospan Schweiz AG for support in the experimental part of this study.

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Authors and Affiliations

  1. Dascanova Technology, Doeblinger Hauptstrasse 32/11, 1190, Vienna, Austria

    Martin Déneši, Tomáš Joščák & Matúš Joščák

  2. Technical University in Zvolen, Zvolen, Slovak Republic

    Martin Déneši & Ferdinand Bodnár

  3. ETH Zurich, Institute for Building Materials—Wood Physics Group, Zurich, Switzerland

    Matúš Joščák

  4. Institute of Wood Science and Technology, University of Natural Resources and Applied Life Sciences—BOKU Vienna, Vienna, Austria

    Alfred Teischinger

Authors
  1. Martin Déneši
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  2. Tomáš Joščák
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  3. Matúš Joščák
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  4. Ferdinand Bodnár
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  5. Alfred Teischinger
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Correspondence to Tomáš Joščák.

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Déneši, M., Joščák, T., Joščák, M. et al. One press cycle production of fiberboard with unsymmetrically distributed densities. Eur. J. Wood Prod. 70, 471–477 (2012). https://doi.org/10.1007/s00107-011-0561-z

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  • DOI: https://doi.org/10.1007/s00107-011-0561-z

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