| 摘要 |
PROBLEM TO BE SOLVED: To obtain a corrugated cardboard sheet having high strength without bringing about complication of a process or increasing the number of processes. SOLUTION: The corrugated cardboard sheet 10 has a corrugating medium 12 for the corrugated cardboard sheet, which is formed of a sheetlike material and characterized in that the height of corrugations of a corrugated shape is 4.6-4.8 mm, the number of ridges per 30 cm is 34±0.5, each of ridges and troughs is formed of a circular arc and R2-R1 is 0.38 mm or less when the circular arc of each ridge is set to R1 and that of each trough is set to R2, and the liner 11 arranged to at least the single surface of the corrugating medium 12 for the corrugated cardboard material. COPYRIGHT: (C)2004,JPO
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