Cellulose-based end-grain core material and composites

Details Cellulose-based end-grain core material and composites Cellulose-based end-grain core material and composites

B - Operations, Transporting

32

B

B32B 23/02 (2006.01) B27N 3/04 (2006.01) B29C 45/14 (2006.01) B32B 21/02 (2006.01) B32B 21/04 (2006.01) B32B 21/08 (2006.01) B32B 27/04 (2006.01) D04H 1/58 (2006.01) E04C 3/29 (2006.01)

Patent

CA 2460925

A composite structural product is provided which comprises light weight cores made from processed kenaf, balsa or other cellulosic stalks (12, 14) bonded together. These may be conveniently manufactured into core blocks (10), and later sized and joined as the core members of a composite structure, e.g. laminates (30), fiberglass walls (38), or plastic encased products. The other members of the composite could include many different materials, from metals to woods to synthetic polymers such as thermoplastic and thermosetting resins (37). In one form, the kenaf or balsa stalks are formed into small strips or grindings for use as a light core weight filler in molding processes.

L'invention concerne un produit structurel composite comprenant des couches centrales légères, faites de tiges traitées de kenaf, de balsa, ou d'autres tiges cellulosiques (12, 14), attachées ensemble. Ces couches centrales peuvent être facilement fabriquées sous forme de noyaux de déroulage (10), puis dimensionnées et liées pour former les éléments de couche centrale d'une structure composite, par exemple des contre-plaqués lamellés (30), des parois en fibre de verre (38), ou des produits enrobés en plastique. Les autres éléments du composite peuvent comprendre de nombreux ingrédients différents, des métaux aux bois en passant par les polymères synthétiques tels que les résines thermoplastiques et thermodurcissables (37). Dans un mode de réalisation, les tiges de kenaf ou de balsa forment de petites bandes ou des éléments broyés, afin d'être utilisées en tant que matière de remplissage pondéral de couche centrale légère au cours de processus de moulage.

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