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Title of Journal: Eur J Wood Prod

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Abbravation: European Journal of Wood and Wood Products

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Springer-Verlag

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DOI

10.1007/978-1-4020-5476-1_8

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ISSN

1436-736X

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Industrial production of pine tanninbonded partic

Authors: J Valenzuela E von Leyser A Pizzi C Westermeyer B Gorrini
Publish Date: 2012/05/11
Volume: 70, Issue: 5, Pages: 735-740
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Abstract

This article reports on the industrial particleboard and MDF production and trial results obtained over a period of nine years using pine tannin adhesives in Chile The industrial panels obtained clearly showed that pine tannin extract a renewable raw material can be industrially used as an adhesive to manufacture particleboard and medium density fiberboard MDF of excellent quality and of very low formaldehyde emission and this at a reasonable cost The technology revealed itself suitable both for very old multidaylight particleboard lines and for more modern single daylight MDF lines Panels were manufactured initially with addition of small percentages of pMDI to the pine tannin adhesive Later adhesive formulations in which pine tannin alone without pMDI was used still showed good results Industrial results where either paraformaldehyde or hexamethylenetetramine was used as hardener are reported In the former case the panels satisfied with ease the E1 formaldehyde emission class of European norms In the case of either pMDIadded adhesives or hexaminehardened adhesives without pMDI the emission was lower than the requirements of the F Japanese standardIn diesem Artikel werden die industrielle Produktion von Spanplatten und mitteldichten Faserplatten mit Tanninkleber in Chile und die Erfahrungen damit über einen Zeitraum von neun Jahren beschrieben Die industriell und zu angemessenen Kosten hergestellten Platten zeigten dass Kieferntanninextrakt ein nachwachsender Rohstoff zur industriellen Produktion von qualitativ hochwertigen Spanplatten und MDF mit niedriger Formaldehydemission verwendet werden kann Die Technologie erwies sich sowohl für sehr alte Mehretagenpressen für Spanplatten als auch für modernere Einetagenpressen für MDF als geeignet Zuerst wurden die Platten unter Zugabe von kleinen Mengen an pMDI zum Tanninkleber hergestellt Später zeigten Klebstoffrezepturen bei denen nur Kieferntannin ohne pMDI verwendet wurde gute Ergebnisse Über Ergebnisse mit Paraformaldehyd oder Hexamethylentetramin als Härter wird berichtet Im ersten Fall erfüllten die Platten problemlos die Anforderungen der Emissionsklasse E1 der europäischen Normen Bei Klebstoffen mit Zugabe von pMDI bzw Klebstoffen mit Hexamin als Härter und ohne pMDI war die Emission geringer als die Anforderungen der Klasse F der japanischen Norm


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Other Papers In This Journal:

  1. Remedial boron treatment of difficult to access timber in buildings
  2. Cork as a building material: a review
  3. Fire performance and decay resistance of solid wood and plywood treated with quaternary ammonia compounds and common fire retardants
  4. Soy-substituted liquid phenol formaldehyde binders for flakeboard
  5. The potential of color measurements with the CIEDE2000 equation in wood science
  6. UV protection effects of phenolic extracts from chestnut fruit and forest industries residues
  7. The effect of acetylation on the Janka hardness of pine wood
  8. Full-field moisture induced deformation in Norway spruce: intra-ring variation of transverse swelling
  9. Wood–water relations of chestnut wood used for structural purposes
  10. Wood based bulk material in 3D printing processes for applications in construction
  11. Manufacture and properties of citric acid-bonded particleboard made from bamboo materials
  12. Resin and wax distribution and mobility during medium density fibreboard manufacture
  13. Resistance based moisture content measurements on native, modified and preservative treated wood
  14. Minimizing dust emission during routing operation of rubberwood
  15. Comparison of wood coating durability in natural weathering and artificial weathering using fluorescent UV-lamps and water
  16. Weathering indicator for artificial and natural weathering of wood coatings
  17. Development of a new rapid method for mould testing in a climate chamber: preliminary tests
  18. Effect of species and grinding disc distance on the surface roughness parameters of medium density fiberboard
  19. Load-bearing characteristics of heat-treated rubberwood furniture components and joints
  20. Effect of accelerated aging on selected physical and mechanical properties of Bambusa rigida bamboo

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