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US 6,472,032 B1Granted
Double-glazing unit
AssigneeNippon Sheet Glass Co., Ltd.
InventorOsamu Asano
Life of this patent
Estimating the term…
Abstract
A double glazing having a plurality of sheet glass (1) (2) juxtaposed in the direction of thickness with spacers (3) arranged in between, peripheries of these sheet glasses (1) (2) being sealed throughout the circumference thereof. Reinforced sheet glass is employed for at least one of the plurality of sheet glasses (1) (2), and the peripheries of the sheet glasses are sealed by a sealing material having a sealing temperature below 400° C.
Claims28
A double glazing comprising:
- a plurality of sheet glasses juxtaposed in the direction of thickness with spacers arranged in between, the peripheries of said sheet glasses being sealed through the circumference thereof, wherein at least one of said plurality of sheet glasses is a reinforced sheet glass, said reinforced sheet glass having a surface compression stress in a range of from 204 to less than 2400 kg/cm2 after sealing;
- wherein the peripheries of said sheet glasses are sealed by a sealing material comprising low melting point glass having a bonding strength of at least 20 kg/cm2 and a coefficient of thermal expansion at 75-85×10−7/°C. and having a sealing temperature below 400° C.
A doubleglazing comprising:
- a plurality of sheet glasses juxtaposed in the direction of thickness with spacers arranged in between, the peripheries of said sheet glasses being sealed throughout the circumference thereof,
- wherein the peripheries of said sheet glasses are sealed by a sealing material having a sealing temperature below 400° C. and the double glazing employs a reinforced sheet glass for at least one of said plurality of sheet glasses, said reinforced sheet glass having a surface compression stress in a range of from 204 to less than 2400 kg/cm2
- said sealing material comprises low melting point glass having a bonding strength of at least 20 kg/cm2 and a coefficient of thermal expansion at 75-85×10−7/°C.;
- and
- said low melting point glass being a glass powder composition comprising 70.0-80.0% by weight of PbO, 5.0-12.0% by weight of B2O3, 2.0-10.0 by weight of ZnO, 0.5-3.0% by weight of SiO2, 0-2.0% by weight of Al2O3, 3.0-7.0% by weight of Bi2O3, 0.5-5.0% by weight of CuO, and 0.1-6.0% by weight of F (F2).
2 more elements
A double glazing comprising:
- a plurality of sheet glasses juxtaposed in the direction of thickness with spacers arranged in between, peripheries of said sheet glasses being sealed throughout the circumference thereof;
- wherein the peripheries of said sheet glasses being sealed by a sealing material having a sealing temperature below 400° C. and the double glazing employs a reinforced sheet glass for at least one of said plurality of sheet glasses, said reinforced sheet glass having a surface compression stress in a range of from 204 to less than 2400 kg/cm2 after said sealing,
- said sealing material comprises low melting point glass having a bonding strength of at least 20 kg/cm2 and a coefficient of thermal expansion at 75-85×10−7/°C.;
- and
- said low melting point glass comprising 70.3-92.0% byweight of PbO, 1.0-10.0% by weight of B2O3, 5.2-20.0% by weight of Bi2O3, 0.01-8.0% by weight of F2, 0-15.0% by weight of ZnO, 0-5.0% by weight of V2O5, 0-2.0% by weight of SiO2, 0-2.0% by weight of Al2O3, 0-2.0% by weight of SnO2, and 0-4.0% by weight of BaO, B2O3/PbO being in a weight ratio of 0.11 or less.
2 more elements
A double glazing comprising:
- a plurality of sheet glasses juxtaposed in the direction of thickness with spacers arranged in between, peripheries of said sheet glasses being sealed throughout the circumference thereof,
- wherein the peripheries of said sheet glasses being sealed by a sealing material having a sealing temperature below 400° C. and the double glazing employs a reinforced sheet glass for at least one of said plurality of sheet glasses, said reinforced sheet glass having a surface compression stress in a range of from 204 to less than 2400 kg/cm2 after said sealing,
- said sealing material comprises low melting point glass having a bonding strength of at least 20 kg/cm2 and a coefficient of thermal expansion at 75-85×10−7/°C.;
- and
- said low melting point glass has a composition including 65.0-85.0% by weight of PbO, 1.0-11.0% by weight of B2O3, 7.2-20.0% by weight of Bi2O3, 0-6.0% by weight of F (F2,), 0-11.0% by weight of ZnO, 0-4.0% by weight of V2O5, 0-3.0% by weight of SiO2+Al2O3, 0-5.0% by weight of SnO2, 0-0.1% by weight of Fe2O3, and 0.2-5.0% by weight of CuO.
2 more elements
Dependencies are inferred from the claim text.