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B - Operations, Transporting

27

K

B27K 3/22 (2006.01) B27N 1/00 (2006.01) C08K 3/38 (2006.01) C08L 97/02 (2006.01) C08L 101/00 (2006.01)

Patent

CA 2320297

The fire resistance of composite wood products is improved by applying a suitable aqueous dispersion of zinc borate onto the fibers to uniformly distribute and to adhere the zinc borate to the strands of the wood composite, applying a suitable adhesive to the wood strands, forming a strand lay-up and consolidating a lay- up under heat and pressure to form a consolidated product with zinc borate uniformly distributed therethrough.

L'invention porte sur un produit ligneux composite rendu plus résistant aux dégradations biologiques en appliquant sur les fibres d'une dispersion aqueuse idoine de borate de zinc qui s'y répartit uniformément, en appliquant sur les copeaux longs un adhésif idoine, en constituant un empilement de couches de copeaux, et en rigidifiant l'empilement par chauffage et compression. On obtient ainsi un produit rigide où le borate de zinc est uniformément réparti.

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