| 摘要 |
PROBLEM TO BE SOLVED: To finish both front and back faces of a joint using a metallic hook which connects both ends of a corrugator belt for manufacturing corrugated fiberboard sheets so as not to allow the corrugated fiberboard sheet surfaces to be damaged irregularly. SOLUTION: The metallic hook 31 are implanted in both end portions of the corrugator belts 4 buried beneath the belt surface by the dimension found based on a variation of the thickness of the corrugator belt 4 or a filler cloth 35 before or after the pressed compression, both front and back external surfaces of the metallic hook 31 are covered with the filler cloth 35 which has more satisfactory and reasonable cushion property than the belt main body, or a paper contact surface 33 of the metallic hook 31 is covered with the filler cloth 35 and an opposite non-paper contact surface 34 is covered with a heat resistant resin 36.
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