| 摘要 |
PROBLEM TO BE SOLVED: To securely maintain a reinforcing material in a vertical direction with respect to a housing apparatus. SOLUTION: A reinforcing material 2 which is folded into a curvature in a plan view having at least one top almost in parallel with a cross direction of a corrugated board is supported upright in such a manner that an internal contact plate 9 among a side face plate 7 extended from both sides of one part of a support plate 5 which supports the reinforcing material 2, a pinching plate 8, the internal contact plate 9, an external contact plate 10 extended from other both sides of the support plate 5 is abutted against the inside face and the external contact plate 10 is abutted against the outside face. |
