| 摘要 |
PROBLEM TO BE SOLVED: To provide a box in which a bottom wall is naturally sealed only by pushing flaps inside and a troublesome work such as sticking the flaps with a pressure-sensitive adhesive tape or the like is made unnecessary when the bottom wall is sealed. SOLUTION: The first flap to the fourth flap 14-17 are successively, adjoiningly and extendedly provided on the lower end edges of four side sheets 1-4 through transversely folding lines 13. Each one side part of mutually adjoining sides of the first flap 14 and the fourth flap 17 is cut out so as to depress approximately the center to form an inner overlapping part 19 on the base end side of one side part of the first flap 14 and an outer overlapping part 20 on the apex end side thereof, and on the other hand, an outer covering part 21 on the base end side of one side part of the fourth flap 17 and an inserting part 22 on the apex side thereof. Then, the first flap to the fourth flap are successively folded inside so as to partly overlap them, and finally, when the fourth flap is pushed inside, the inserting part 22 is fitted into the outer overlapping part to naturally seal the bottom wall. COPYRIGHT: (C)2004,JPO
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