| 摘要 |
PROBLEM TO BE SOLVED: To obtain excellent waterproofness by providing a bottom plate part formed to lay a roofing plate on a roof backing, rising both the terminal part of both ends of the roofing plate and a batten seam part formed to be joined to both the side ends of a packing plate. SOLUTION: A square timber 3 is fixed on a backing 2, a roofing plate 4 composed of a metal plate is constructed to form a bottom plate part A, both end parts 4a of the roofing plate 4 is risen along the square timber 3, and coupled to both the side ends of a packing plate 5 to form a batten seam part B. A cap body 6 having a flange-like part 6a extending from both leg parts in shape along the batten seam part B is covered, a sheet member 8 is laid on the bottom plate part A so that it is overlapped to the flange-like part 6a, and the flange-like part 6a and the sheet member 8 are coupled. Next, with regard to raw material of the cap body 6, ethylene-vinyl acetate copolymer and polyethylene are blended at a ratio of (90:10)-(60:40), the contents of ethylene-vinyl copolymer is made 19-33wt.%. Thus, the cap body excellent in adhesion can be obtained. |
