Evacuated glass panel having a getter

E - Fixed Constructions – 06 – B

Patent

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Details

E06B 3/677 (2006.01) E06B 3/663 (2006.01)

Patent

CA 2391831

A method of fabricating an evacuated glass panel, in particular when in the form of evacuated glazing, which in- corporates a chamber (18) that is defined by two spaced-apart glass sheets (10 and 12) and a fused edge seal (16). The method comprises positioning the glass sheets (10) and (12) in spaced-apart relationship using pillars (14), and locating a getter (20, 21 or 23) within a region (22) of the chamber that is to be formed between the glass sheets. A fusible sealant material (16) is deposited around the edges of the glass sheets (10 and 12) and air is displaced from between the glass sheets by admitting an inert gas to the space between the glass sheets. After admitting the inert gas the sealant material is fused to create the fused edge seal (16) around the glass sheets whilst maintaining the inert gas in the chamber that is formed with fusing of the sealant material. Thereafter, the chamber is evacuated and, depending upon the type of getter (20, 21 or 23) that is employed, the getter is activated either following evacuation of the chamber or during fusing of the edge seal around the glass sheets.

L'invention concerne un procédé de fabrication de panneau de verre sous vide, en particulier sous la forme de vitrage sous vide, qui comprend une chambre (18) définie par deux feuilles de verre espacées (10 et 12) et un scellement à lisière obtenue par fusion (16). Le procédé consiste à placer les feuilles de verre (10) et (12) en position espacée à l'aide de colonnes (14), et à placer un getter (20, 21 ou 23) dans une zone (22) de la chambre destinée à être formée entre les feuilles de verre. Un matériau de scellement fusible (16) est déposé autour des bordures des feuilles de verre (10 et 12), et l'air est déplacé depuis l'espace compris entre les feuilles de verre par injection de gaz inerte dans cet espace. Après l'injection du gaz inerte, le matériau de scellement est fondu, ce qui donne le scellement à lisière obtenue par fusion (16) autour des feuilles de verre, et l'on maintient simultanément le gaz inerte dans la chambre formée par la fusion du matériau de scellement. Ensuite, le vide est fait dans la chambre et, en fonction du type de getter (20, 21 or 23) utilisé, on active ce getter suite à l'établissement du vide dans la chambre ou pendant la fusion du scellement à lisière autour des feuilles de verre.

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