| 摘要 |
PURPOSE: To efficiently shut off the hollow chamber of a hollow structure by a small quantity of foamable material and to easily and effectively mount a support plate in the chamber of the structure by a simple structure by supporting at least one side of both sides of the material by a foaming limiting support plate. CONSTITUTION: A support structure supports a foamable material 21 for shutting off a hollow chamber 6 by foaming the chamber 6 of a hollow structure 1 by external heating, and a foaming limiting support plate 11 for supporting at least one side of both sides of the material 21 and limiting the foaming of the material 21 is provided in the direction perpendicular to the longitudinal direction of the chamber 6. A locking clip 15 for engaging the hole 6 of the structure is formed integrally with the plate 11 at the plate 11. |
