Laminated panes and windows formed therewith
AssigneeCorning Incorporated
InventorsJames Gregory Couillard, Michael Aaron McDonald, Paul George Rickerl
Life of this patent
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Abstract
A laminated pane for a window includes (1) a first sheet having a first thickness and a first coefficient of thermal expansion (CTE), (2) a second sheet of an inorganic glass having a second thickness and a second CTE, and (3) a polymer interlayer adhered between the first sheet and the second sheet including a layer of a first polymer material having a first elastic modulus and a layer of a second polymer material having a second elastic modulus, wherein the first CTE is greater than the second CTE, the second thickness is in the range of from 1 down to 0.3 mm, and the first elastic modulus is more than 20 times the second elastic modulus.
Claims16
An insulated glass unit comprising:
- an outer pane providing an outer surface and an interior surface of the insulated glass unit;
- an inner laminated pane comprising:
- a first sheet of a first transparent or translucent material of soda lime silicate glass, the first sheet (i) providing another interior surface of the insulated glass unit, (ii) having a first thickness, and (iii) comprising surface compression from thermal tempering, wherein the first transparent or translucent material exhibits a first coefficient of thermal expansion (CTE1) measured over a range of from 0 to about 300° C.;
- a second sheet of a second transparent or translucent material of boro-aluminosilicate glass, the second sheet (i) providing another outer surface of the insulated glass unit and (ii) having a second thickness, wherein (i) the second transparent or translucent material exhibits a second coefficient of thermal expansion (CTE2) and (ii) the second sheet does not include surface compression from thermal tempering;
- and
- a polymer interlayer between the first sheet and the second sheet adhered between the first sheet and the second sheet, the polymer interlayer comprising:
- a first polymer layer of a first polymer material, the first polymer material having a first elastic modulus, and
- a second polymer layer of a second polymer material, the second polymer material having a second elastic modulus;
- wherein the first polymer layer is positioned adjacent to the first sheet and the second polymer layer is positioned adjacent to the second sheet;
- wherein CTE1 is greater than CTE2, the first thickness is in the range from about 2 mm to about 20 mm;
- the second thickness is in the range from about 1 to about 0.3 mm, and the first elastic modulus is more than about 20 times greater than the second elastic modulus;
- spacers separating the outer pane from the inner laminated pane;
- and
- wherein the inner laminated pane has a normalized diagonal bow percentage of no greater than 0.174% when measured in accordance with EN 12150 in as-laminated condition.
An insulated glass unit comprising:
- an outer pane providing an outer surface and an interior surface of the insulated glass unit;
- and
- an inner laminated pane comprising:
- a first sheet of soda lime glass, the first sheet (i) providing another interior surface of the insulated glass unit and (ii) comprising a thickness within a range of from 2.1 mm to 20 mm;
- a second sheet of alkaline earth boro-aluminosilicate glass, the second sheet comprising a thickness within a range of from 0.3 to 1 mm;
- and
- a three-layer polymer interlayer disposed between and directly contacting the first sheet and the second sheet, each of the three layers of the three-layer polymer interlayer comprising (i) a shared composition, (ii) a thickness, the thickness of a middle layer of the three-layer polymer interlayer being less than the thickness of outer layers of the three-layer polymer interlayer, and (iii) an elastic modulus, the elastic moduli of the outer layers being at least twenty times greater than the elastic modulus of the inner layer,
- wherein the inner laminated pane has a normalized diagonal bow percentage of no greater than 0.174% when measured in accordance with EN 12150 in as-laminated condition.
Dependencies are inferred from the claim text.