| 摘要 |
PROBLEM TO BE SOLVED: To obtain a corrugated cardboard sheet which has greater compressive strength than a conventional corrugated cardboard sheet, and is lightweight and excellent in cushioning properties and heat insulating properties without being bulky. SOLUTION: A thin corrugated cardboard, in which the number of corrugations per 30 cm is 90 or more and in which the height of the corrugation is 1.5 mm or less, is used in place of the liner base paper for the conventional corrugated cardboard. COPYRIGHT: (C)2004,JPO
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