Abstract:
A low-e insulating glass unit has a suspended, coated IR reflecting polymer sheet under tension, e.g. from heat shrinkage. The polymer sheet is coated with a multilayer stack of dielectric and metallic layers, including at least one silver layer deposited upon a zinc oxide seed layer that is at most 15 nm thickness. The use of zinc oxide ensures good seeding for high quality silver layer growth, thereby providing low emissivity. The thinness of the zinc oxide ensures that it resists cracking when the polymer sheet is tensioned.
Abstract:
A thermal treatment method for insulating glass units or IGUs having one or more suspended polymer films includes first curing a sealant at a first elevated temperature for a specified duration, then shrinking the suspended film at a second, higher, elevated temperature for a specified duration, and then cooling the IGUs back to ambient temperature. The various heating and cooling stages may be performed in a tunnel oven having different length sections at the desired temperatures, while the IGUs are conveyed from one section to the next.
Abstract:
A solar control member (50; 62; 70; and 90) for determining solar control for a window (52) includes an optically massive layer (58; 66; and 80) between a gray metal layer (60; 64; 76; and 86) and a titanium nitride layer (56; 68; 78; and 88). The optically massive layer has sufficient thickness to retard or prevent constructive and destructive interference of reflected light. The optically massive layer may be an adhesive, but also may be one or more polymeric substrates. The gray metal layer is preferably nickel chromium, but other gray metal materials provide superior results as compared to the prior art. Also in the preferred embodiment, the titanium nitride layer is closer to the window (e.g., glass) than the gray metal layer.
Abstract:
A solar control film having low visible light transmittance and low visible light reflectance is comprised of a first sheet of transparent substrate material (40) having deposited thereon a solar-load-reduction film (46) for preferentially reducing infrared light energy transmitted through the film, and a second sheet of transparent substrate material (52) having deposited thereon a thin, transparent film (50) of metal effective to partially block light transmittance, wherein the first sheet of transparent substrate and the second sheet of transparent substrate are separated by an optically massive layer that prevents the constructive and destructive interference of reflected light. A preferred embodiment of a solar control film includes, in order, a pressure-sensitive adhesive layer (42), a polyethylene terephthalate layer (44), a Fabry-Perot interference filter layer (46), an adhesive layer (48), a grey metal layer (50), another polyethylene terephthalate layer (52), and a hardcoat layer (54). The preferred solar control film provides wavelength selectivity in the infrared range while controlling visible light transmission and minimizing visual light reflectance.
Abstract:
The defect known as 'applesauce' is eliminated from laminated glass structures (10) which include an intermediate plastic film (20) carrying an energy reflective layer (22) by adhering this film to one of the glass sheets (14, 26) of the laminate with an adhesive layer (18) which is less than 5 mils (0.127 mm) thick.
Abstract:
An improved way to impart antireflection properties to a light transmissive substrate and, at the same time, achieve a durable surface and electrical conductivity is disclosed. A stack of at least two sputter-deposited light transmissive inorganic layers, one of which being electrically conductive and having a high index of refraction with the one above it (relative to the substrate being antireflected) having a low index of refraction, in combination with a thin lubricating overlayer comprising a solvent-soluble lubricant such as a solvent-soluble fluoropolymer can achieve this desired combination of properties.
Abstract:
Multipane, insulating glazing structures having exceptional thermal insulation performance are provided. The multipane structures comprise two substantially parallel rigid glazing sheets (12, 18) spaced apart by an interior spacer (20) which includes a physically stable body (22) of low thermal conductivity, closed cell, foamed polymer.