Energy efficient construction surfaces

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 1/00 (2006.01)

Patent

CA 2550622

The present invention provides a non-white construction surface comprising a substrate, a first reflective coating on at least a portion of an outer surface of a substrate, such that the substrate with this first reflective coating exhibits a minimum direct solar reflectance value of at least about 25%, and a second reflective coating on at least a portion of the first reflective coating, wherein the combination of the first reflective coating and the second reflective coating provide the substrate with a reflectivity of at least about 20% at substantially all points in the wavelength range between 770 and 2500 nm.

La présente invention concerne une surface de construction non blanche comprenant un substrat, un premier revêtement réfléchissant sur au moins une partie d'une surface externe d'un substrat, de telle manière que le subtrat doté de ce premier revêtement présente une valeur de réflectance solaire directe minimale d'au moins environ 25 %, et un second revêtement réfléchissant sur au moins une partie du premier revêtement réfléchissant. La combinaison des premier et second revêtements réfléchissants fournit au substrat une réflectivité d'au moins environ 20 % pratiquement au niveau de tous les points dans une fourchette de longueurs d'onde comprise entre 770 et 2500 nm.

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