| 摘要 |
<p>A plastic box formed of a plastic and arranged continuously to the two opposed sides (18) on one sides of an opening part (17). The opening part (17) is closed by bending an inner flap (13) inward, folding, on the inner flap, an outer flap (15) arranged continuously to either of the opposed two sides (19) on the other sides, and lockingly inserting an insertion flap piece (14) to the inside of the opening part (17). A lock mechanism locked by locking the base end portions (13a) of the inner flap (13) is formed in slits (21) formed at both end portions of the insert flap piece (14) on a bending line (20) between the flap piece and the outer flap (15). A finger hooking flange part (22) projected from the bending line (20) to the outside is formed on the outer flap (15) at a position displaced from the center to the side end part of the bending line (20).</p> |
