Heat reflecting sandwich plate

Details Heat reflecting sandwich plate Heat reflecting sandwich plate

1993-01-15

1994-05-03

Page, Thurman K.

Stock material or miscellaneous articles

Composite

Of quartz or glass

428432, 428437, 428469, 428623, 428626, 428630, 428689, 428925, B32B 1504, B32B 1706, B32B 1710

Patent

active

053087062

ABSTRACT:
Disclosed herein is a heat reflecting sandwich plate made up of a first and a second transparent plates bonded together with a transparent resin film. The first transparent plate is coated on the inside thereof with a heat reflecting film which is a laminate composed of two metal oxide layers, with a noble metal layer intervening between them. The noble metal layer has a sheet resistance of 4-10 ohms/square. The first and second metal oxide layers have thicknesses controlled such that their ratio is in the range of 1.1 to 1.6. The heat reflecting sandwich plate produces reflected rays which have a chromaticness specified by -1.ltoreq.a.ltoreq.1 and -1.ltoreq.b.ltoreq.1, where a and b denote the chromaticness indices of Hunter's color specification system, and has a visible light reflectivity lower than 10%. Because of these characteristic properties, the heat reflecting sandwich plate has high strength and safety, exhibits outstanding heat reflecting performance, and assumes almost no color and looks good despite its comparatively high visible light transmittance.

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