| 摘要 |
<p>PURPOSE:To improve working efficiency by forming a recess and a protrusion respectively on the joint end surfaces of planar materials of a pair of roof panels, forming zigzags on each joint surface of core materials of the panels and jointing the joint end surfaces and the joint surfaces respectively. CONSTITUTION:A recess 13 of a planar material 11a of a panel 10a is brought into engagement with a protrusion 14 of a planar material 11b of a roof panel 10b through a sealing material 16 to be bonded to each other. And zigzags 15a of a core material 12a fixed to the material 11a is engaged with zigzags 15b of a core material 12b fixed to the material 11b to be bonded to each other.</p> |
