Panel with high structural strength, and device and method...

D - Textiles – Paper – 04 – H

Patent

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Details

D04H 13/00 (2006.01) B29C 70/24 (2006.01) B32B 5/06 (2006.01) B32B 5/26 (2006.01) B32B 7/08 (2006.01) D04H 18/00 (2006.01)

Patent

CA 2700154

The panel includes a web (3) placed between two skins (2) made of a fibrous structure (21) attached by a stratification or consolidation material such as a resin (22), a binder, a foamed resin. The web typically includes foams, felts, powdery materials, semi-fluid materials, etc. Fibres (7) from fibrous structures (21) are rammed along one or more oblique orientations relative to the skins (2) and typically by needle-punching into the web (3), in particular into foam plates (4) constituting the web. The binding material also binds the rammed fibres (7) so as to perform a mutual anchoring between the constituents of the web (3) and the skins (2). The invention can be used for economically producing particularly resistant composite panels with a very large selection for the constituents of the web (3), the skins (2) and the ramming orientations of the fibrous structures (21).

Le panneau comprend une âme (3) située entre deux peaux (2) composées d'une structure fibreuse (21) fixée par une matière de stratification ou de consolidation telle qu'une résine (22), un liant, une résine moussée. L'âme comprend typiquement des mousses, des feutres, des pulvérulents, des semis fluides, etc.. Des fibres (7) issues des structures fibreuses (21) ont été enfoncées suivant une ou plusieurs orientations obliques par rapport aux peaux (2), typiquement par aiguilletage, dans l'âme (3), notamment dans des plaques de mousse (4) constitutives de l'âme. La matière liante fixe également les fibres enfoncées (7), de façon à réaliser un ancrage mutuel entre les constituants de l'âme (3) et les peaux (2). Utilisation pour réaliser de façon économique des panneaux composites particulièrement résistants, avec des possibilités de choix très étendu pour les constituants de l'âme (3), des peaux (21) et des orientations d'enfoncement des structures fibreuses (21).

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