| 摘要 |
PROBLEM TO BE SOLVED: To prevent a step collapse or a defective bonding by a weight roll or a pressing device arranged on a double facer from being generated. SOLUTION: In the double facer, a loading body which is suspended by the self weight of a weight block alone on the top of a corrugated board sheet is arranged in the machine width direction and the sheet carrying direction for this loading device. Then, the corrugated board sheet is bonded without generating the collapse or a defective bonding of the corrugated board sheet by loading the corrugated board sheet by such a loading device. |
