| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint material capable of maintaining weatherability even when exposed to the sunlight and outside air over a long period.SOLUTION: An antioxidant, an ultraviolet absorber and a light stabilizer are included in an elastic polymer material for forming a design part 13 of a joint material 12, and the antioxidant, the ultraviolet absorber and the light stabilizer are respectively included by the same wt.% or more as wt.% of the content in the design part 13 in the elastic polymer material for forming a base material part 14. When a long period passes in a state of arranging the joint material 12 in a joint between outer wall panels 11, a deterioration inhibitor (the antioxidant, the ultraviolet absorber and the light stabilizer) included in the design part 13 reduces, but when the content of the deterioration inhibitor included in the base material part 14 increases to a level more than the content in the design part 13, the deterioration inhibitor moves to the design part 13 from the base material part 14, Thus, reduction in the deterioration inhibitor included in the design part 13 is restrained, and the deterioration restraining action of the deterioration inhibitor included in the design part 13 can be maintained over a long period. |
