Multiple glazing with thermal and acoustic insulation
AssigneeSaint-Gobain Glass France
InventorMarc Rehfeld
Life of this patent
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Abstract
A multiple glazing element including at least one pane of laminated glass of two glass sheets that each have a thickness between 1.5 and 2.5 mm, and a single thickness glass pane having a thickness between 3 and 5 mm. The weight of the glazing element is at least 30% less than the weight of an insulating glazing element that includes at least two single thickness glass sheets separated by a layer of gas having the same thickness as that of the multiple glazing element, with a difference of sound reduction index between the multiple glazing element and the insulating glazing element not exceeding 3 dB.
Claims15
1-14. (canceled)
A multiple glazing element with heat and sound protection properties mounted in a window, comprising:
- a first laminated glass pane and at least one second single thickness glass pane, parallel to the first laminated glass pane and separated from the first laminated glass pane by a layer of gas,
- the first laminated glass pane including at least two glass sheets joined together by at least one plastic film, wherein the two glass sheets of the first laminated glass pane each have a thickness between 1.5 and 2.5 mm,
- the second single thickness glass pane has a thickness between 3 and 5 mm, and the weight of the glazing element is at least 30% less than the weight of an insulating glazing element that includes at least two sheets of single thickness glass separated by a layer of gas having the same thickness as that of the multiple glazing element, the difference between the weighted sound reduction index Rw of the multiple glazing element and the weighted sound reduction index Rw of the insulating glazing element with two sheets of single thickness glass not exceeding 3 dB.
Dependencies are inferred from the claim text.