Multi-layered foamed composite element comprising recesses

Details Multi-layered foamed composite element comprising recesses Multi-layered foamed composite element comprising recesses

E - Fixed Constructions

04

B

E04B 1/86 (2006.01) B32B 5/18 (2006.01) B32B 5/22 (2006.01)

Patent

CA 2643073

The invention relates to a multi-layered foamed composite element having a total thickness d, comprising at least three layers of open-celled foam. At least one of the inner layers comprises recesses and both external layers do not have recesses. The composite element is characterised in that i) the volume of the recesses is 20 to 70 vol % in the internal layer comprising the recesses, and ii) the thickness of the layer comprising the recesses is 20 to 80% of the total thickness d.

L'invention concerne un élément composite en mousse multicouche présentant une épaisseur totale d, comportant au moins trois couches de mousse à cellules ouvertes. Au moins une des couches intérieures présente des évidements et les deux couches extérieures ne présentent pas d'évidements. L'élément composite selon l'invention est caractérisé en ce que i) le volume des évidements est de 20 à 70 % en vol. dans la couche intérieure présentant des évidements, et ii) l'épaisseur de la couche présentant des évidements représente 20 à 80 % de l'épaisseur totale d.

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