VACUUM DOUBLE-GLAZING UNIT

摘要

PROBLEM TO BE SOLVED: To improve strength without impairing the excellent thermal insulating effect of a vacuum double-glazing unit and without increasing the total thickness of the vacuum double-glazing unit. SOLUTION: This vacuum double-glazing unit P is formed by oppositely arranging a pair of sheet glass 1 and 2 across a clearance V formed by interposing a spacer 3 between both the sheet glass 1 and 2, sealing the outer peripheral parts of a pair of both the sheet glass 1 and 2 by a material 4 for end-sealing to each other and maintaining the clearance V under a reduced pressure state. Tempered sheet glass G subjected to a tempering treatment is used as at least one sheet glass 1 (2) of a pair of the sheet glass 1 and 2 and a sheet surface 21 placed on a conveyance device in contact therewith during the tempering treatment time of the sheet surface of the tempered sheet glass G is arranged on the non-clearance side.