| 摘要 |
PURPOSE: To stabilize the quality performance of double glazing by preventing formation of cavities at corners through a reduction in the shrinkage of an attachment. CONSTITUTION: An attachment 1 has at least one or more grooves 18 cut from the outside wall part 16 to both side wall parts 17 of each hard holding member 15 that is a component member thereof, and if the attachment shrinks longitudinally, the grooves 18 are enlarged to absorb the substantial decrease in length of the attachment. Also, formation of cavities at the corners is prevented. |
