Composite panel

E - Fixed Constructions – 04 – C

Patent

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Details

E04C 2/36 (2006.01) B29C 53/04 (2006.01) B32B 3/12 (2006.01) B32B 15/01 (2006.01)

Patent

CA 2210217

A composite panel comprising a core (12) and at least one outer sheet (14) which is adhesively bonded to the core is such that the composite panel (10) is shape-formed creating at least one radius of bending (24b) in the outer layer (14). The core (12) exhibits a cellular structure and is bonded to the outer layer (14) at least by one visco-elastic adhesive layer (16) applied over a large area. The combination of the honeycomb structure of the core and the adhesive layer with the mentioned properties attaching the core to the outer sheet leads to a composite panel that may be shaped quickly and at favourable cost, without the outer layers being damaged or the strength being significantly reduced. As a result of the large area visco-elastic bonding a higher resistance to delamination, debonding due to vibration, corrosion and moisture is achieved.

Cette invention concerne un panneau composite comprenant une âme (12) et au moins une feuille de revêtement (14) collée à l'âme, ledit panneau composite étant courbé selon au moins un rayon de courbure (24b). L'âme (12) a une structure cellulaire et est collée à la feuille de revêtement (14) par au moins une couche adhésive visco-élastique (16) appliquée sur une grande proportion de la surface. La combinaison structure en nid d'abeille de l'âme et couche adhésive aux propriétés susmentionnées donne un panneau composite que l'on peut façonner rapidement et à coût avantageux, sans endommager les feuilles de revêtement et sans affaiblir le panneau de façon marquée. L'application de la couche adhésive visco-élastique sur une grande partie de la surface permet de réaliser une plus résistance au délaminage sous l'effet des vibrations, de la corrosion et de l'humidité.

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