Light wood-base materials having good mechanical properties

Details Light wood-base materials having good mechanical properties Light wood-base materials having good mechanical properties

B - Operations, Transporting

27

N

B27N 3/00 (2006.01)

Patent

CA 2666447

The invention relates to a light material containing wood having an average density in the region of between 200 to 600 kg/m3, and which comprises, in relation to the material containing wood, A) 30 to 95% by wt. of wood particles, B) 1 to 25% by wt. of a filling material having a bulk density in the region of between 10 to 150 kg/m3, selected from the group consisting of foamable plastic particles and already foamed plastic particles, C) 0.1 to 50% by wt. of a binding agent, and optionally, D) additives. Said claimed material containing wood is characterised by the following relation between the d' values in accordance with the Rosin-Rammler-Sperling-Bennet distribution of the wood particles (A) and the particles of the filling material (B): d' of the particles (A) <=2,5 ~ d' of the particles (B).

L'invention concerne un matériau léger contenant du bois qui a une densité moyenne comprise entre 200 et 600 kg/m3 et qui comprend, par rapport au matériau contenant du bois, A) 30 à 95 % en poids de particules de bois, B) 1 à 25 % en poids d'une matière de charge à densité en vrac comprise entre 10 et 150 kg/m3, sélectionnée dans le groupe constitué de particules plastiques expansibles et de particules plastiques déjà expansées, C) 0,1 à 50 % en poids d'un liant et, éventuellement, D) des additifs. Le matériau contenant du bois selon l'invention est caractérisé en ce qu'on a la relation suivante entre les valeurs d' selon Rosin-Rammler-Sperling-Bennet des particules de bois A) et des particules de matière de charge B) : d' des particules A) <= 2,5 ~ d' des particules B).

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