| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide double glazing which hardly deteriorates durability, and which uses a secondary sealant having the durability quantitatively evaluated in a short evaluation period. <P>SOLUTION: In this glass panel, a seal portion 2 for sealing peripheral edges among a plurality of pieces of sheet glass 1 is provided so that a sealed space 3 can be formed between the pieces of sheet glass 1; the seal portion 2 comprises a primary sealant 10 which is infilled into the side of the sealed space, and the secondary sealant 11 which is infilled into an outer peripheral side with respect to the primary sealant; and a glazing channel 4 for being interposed between the double glazing P and a sash is wounded while being fitted into the outer peripheral edge of the double glazing P in which dry gas is sealed into the sealed space. The secondary sealant is equipped with the durability in which a swelling ratio after immersion into high-temperature water at 80°C over 35 days is equal to/lower than that of the second sealant with a dew-point life in the normal use of the double glazing, and in which tensile stress at a tensile strain of 25% after the immersion is 196 kPa or more. <P>COPYRIGHT: (C)2009,JPO&INPIT |
