| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a corrugated cardboard case which is excellent in the packing workability and easily unpacked and which is not easily broken. SOLUTION: A folding line a10 is provided near the end of the fixing support side of the flap 2 of a corrugated cardboard case 1 and the first notches 4 are formed at both sides of the folding part 10. The first folded parts 7 which are parallel to the bottom face of the case and bent inward at right angles, are bent from the upper ends of both sides of the case 1 to form flat places 6 with about 10-30mm width. And further, the ends of the flat places 6 are bent dowm to the bottom face side at right angles to form the second folded parts 8. Moreover, these are bent at right angles at the bottom face to form the third folded parts 9. The second notches 5 are formed at the fixed support side of the second folded parts 8 and the third notches 11 are provided at the front end side of the second folded parts 8 to make the side face of the second notches 5 side narrower than the width of the flat places 6. In this way, packing and unpacking works are facilitated and the corrugated cardboard cases are not easily broken.</p> |
