| 摘要 |
A vacuum double glazing unit having two glass sheets, of which peripheries are sealed with a spacer therebetween, and a portion between which is vacuumized, and a method of manufacturing the same. Conventionally, since a construction of an exhaust portion after vacuumization is not appropriate, it has not been possible to realize a vacuum double glazing unit which is fairly excellent in durability. Thus glass tube (7), which is used in exhaustion from between the two glass sheets and constitutes the exhaust portion, is provided on a primary surface of one (2) of the two glass sheets (2, 3), an outlet of the glass tube (7) is closed by a fusion method after exhaustion, and a distance between the primary surface of the glass sheet (2) and a projecting tip of the glass tube (7) is at most 3 mm, so that it is possible to provide a vacuum double glazing unit, in which the glass tube is free of breakage and which is excellent in durability, and a method of manufacturing the same.
|
