B - Operations – Transporting – 27 – K
Patent
B - Operations, Transporting
27
K
B27K 3/00 (2006.01) B27K 5/00 (2006.01)
Patent
CA 2304107
The object of the invention is a method for improving the impregnability of refractory wood species by pretreatment with fungi of the genera Trichoderma o Gliocladium or with weakly wood-degraging fungi. The pretreatment comprises a thermal treatment of the wood, the addition of a nutrient medium as well as an incubation phase to promote fungal growth. The incubation phase is stopped when the desired depth of penetration of the fungus is reached. The wood is subsequently impregnated with a wood impregnating agent. The typical result of the fungal pretreament is an increase in the depth of penetration of the impregnating agent to a depth of penetration of 5 mm to 30 mm required depending on the intended use.
L'invention porte sur un procédé améliorant la capacité d'imprégnation d'espèces de bois réfractaires par un prétraitement à l'aide de champignons du genre Trichoderma ou Gliocladium ou de champignons à faible capacité de dégradation du bois. Ledit prétraitement comporte un traitement thermique, l'adjonction d'un milieu nutritif, une phase d'incubation favorisant la croissance des champignons jusqu'à ce que la profondeur de pénétration soit atteinte, et l'imprégnation par un agent d'imprégnation. Il résulte normalement de ce prétraitement un accroissement de la profondeur de pénétration qui atteint de 5 mm à 30 mm selon l'utilisation prévue.
Bruce Alan
Fleck Vinzenz
Messner Kurt
Rosner Bernhard
Lignocell Holz-Biotechnologie Gesellschaft Mbh
Smart & Biggar
University Of Abertay
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