| 摘要 |
PROBLEM TO BE SOLVED: To improve formability and strength for a cover for a powdered detergent container when the cover is formed of a corrugated board. SOLUTION: A three-ply laminate having a corrugated core comprising ridges valleys at its center layer for forming the cover 12 of the container 10 is in a thickness of 0.4 to 0.8 mm. |
