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The effect of planing on the microscopic structure of Pinus radiata wood cells in relation to penetration of PVA glue

Der Einfluß des Hobelns auf die Feinstruktur von Pinus radiata in Hinsicht auf das Eindringen von PVA-Kleber

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Pinus radiata

wood cells and penetration of PVA glue was examined by light microscopy and scanning and transmission electron microscopy. After planing with dull knives the wood cells were greatly distorted and cell walls were extensively damaged, particularly at and near the glue line. In comparison, sharp knives caused much less damage to cell walls and the cells had a normal or near-normal appearance. These features are discussed in detail in relation to glue penetration and the performance of glue joints after planing with sharp and dull knives.

Pinus radiata

Holzzellen und das Eindringen von PVA-Kleber wurde mit Licht- Raster- und Transmissionselektronen-Mikroskop untersucht. Nach dem Hobeln mit stumpfen Messern waren die Holz-zellen sehr verzogen und die Zellwände weitgehend beschädigt, insbesondere an und nahe der Leimfuge. Im Vergleich dazu haben scharfe Messer viel weniger Schaden an den Zellwänden angerichtet und die Zellen hatten eine normale bzw. fast normale Erscheinung.

Diese Merkmale werden detailliert in Bezug zur Leimpenetration und der Haltbarkeit der Leimfugen nach dem Hobeln mit scharfen und stumpfen Messern diskutiert.

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We thank following persons for their assistance with various aspects of the work undertaken. J. C. P. Turner*, J. Menab*, B. S. Penellum*, M. O. Kimberly, M. Stevenson**; *NZ Forest Research Institute, Rotorua; **Faculty of Forestry Timber Technology Centre, Waiariki Polytechnic, Rotorua

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Singh, A., Anderson, C., Warnes, J. et al. The effect of planing on the microscopic structure of Pinus radiata wood cells in relation to penetration of PVA glue. Holz als Roh- und Werkstoff 60, 333–341 (2002). https://doi.org/10.1007/s00107-002-0321-1

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  • DOI: https://doi.org/10.1007/s00107-002-0321-1

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