| 摘要 |
PROBLEM TO BE SOLVED: To provide a corrugated board box which can be fabricated easily without using staples. SOLUTION: For the corrugated board box which has a surrounding wall composed of each one pair of side face boards 1 and end face boards 2, flaps 4 extending from the upper and lower edges of each of the side face boards 1 and end flaps 5 extending from the upper and lower edges of each of the end face boards 2 and is to be fabricated by making these flaps overlap with one another, insertion pieces 6 are formed at both ends of each of the end flaps 5 by cutting edges on both sides of each of the flaps, insertion slots 7 are formed by cutting at both ends of each of the side flaps 4, an indented part 9 is formed at the outside edge of each of the insertion pieces 6, and a restraining piece 8 and an engaging piece 10 are formed so as to face each of the insertion slots 7. Then, with each of the insertion pieces 6 inserted into each of the insertion slots 7, each of the insertion pieces 6 is made to be put along each of the side flaps 4, being pressed by each of the restraining pieces 8, and each of the engaging pieces 10 is engaged with each of the indented parts 9 of each of the insertion pieces 6.
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