| 摘要 |
PROBLEM TO BE SOLVED: To provide a corrugated fiberboard achieving reduction of environmental load through reduction of weight with keeping a predetermined strength and efficient packing/unpacking work of contents such as goods. SOLUTION: The corrugated fiberboard includes: a square tube part having opposite front and rear walls and a pair of opposite right and left side walls; a pair of upper surface side inner flaps each extending from each upper margin of each side wall as a base end margin; a pair of upper surface side outer flaps each extending from each upper margin of the front and rear walls as the base end margin; a pair of lower surface side inner flaps each extending from each lower margin of each side wall as the base end margin; and a pair of lower surface side outer flaps each extending from each lower margin of each side wall as the base end margin. The upper surface side inner flap has a shape made by cutting the front end margin side tip end part out from a rectangular shape having two sides or the base end margin and the rear end margin of the upper surface side inner flap. COPYRIGHT: (C)2010,JPO&INPIT |
