| 摘要 |
PROBLEM TO BE SOLVED: To prevent load resistance from substantially deteriorating and easily unseal a top surface by providing a cutting guide line on front and back portions of a top plate and constituting each guide line of an upper base and sides of an approximate trapezoid with a ridge between the top plate and the front or back plate as a base. SOLUTION: A cutting guide line 30 comprising an upper base and sides of an approximate trapezoid with a ridge with a front plate or a back plate is provided on a top plate 11 of a wrap-round-type packaging box. On an upper base portion of the guide line 30, a plurality of half cut lines with a surface line of a three-layered corrugated fiberboard liner left are placed at predetermined intervals, and a plurality of approximately L-shaped cuts are placed on sides. In unsealing the package, an end of an upper outer flap 21 connected to the right and left of the top plate 11 is pinched by hooking a finger 25 in a slit 25 for pulling up, whereby the top plate 11 can be easily unsealed with right and left trapezoidal portions left.
|
