| 摘要 |
PROBLEM TO BE SOLVED: To provide a seal end carton having an open top portion which is easily unsealed, and capable of preventing degradation of the strength in a step before unsealing such as distribution and sales. SOLUTION: In the seal end carton, a barrel portion is formed by continuously connecting a side plate 11, a front plate 12, a side plate 13 and a rear plate 14 via longitudinal folding lines, a lower top plate 19 is continuously connected to an upper ridge of the rear plate via a folding line, a top plate 17 is continuously connected to an upper ridge of the front plate via the folding line, and a top portion is formed by overlapping and affixing the top plate on the lower top plate. A knob part 14a is provided on the center of the upper ridge of the rear plate by the cutting line x of the knob part, an unsealing cut line y is formed on the folding line of the rear plate and the lower top plate continuous to both ends of the knob part cut line from the intersection p of both ends of the knob part cut line with the folding line to the intermediate point q of both end points s of the folding line, and a lower-top cut line z is formed from the intermediate point to the upper corner point r of the lower top plate. COPYRIGHT: (C)2005,JPO&NCIPI
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