| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging box which has improved folding integration property when used packaging boxes are discarded and on which integration work and binding work can be easily performed. SOLUTION: In the packaging box formed of a four-cornered cylindrical box main body and flaps for sealing the top and the bottom faces, two cut lines or easily cut lines 13 and 14 crossing ruled lines are provided by cutting on cylindrical part panels adjoining by placing the ruled line 7 between them and folding lock pieces 17a and 17b facing each other by placing the ruled line between them are formed between the cut lines or the easily cut lines and cut lines or easily cut lines dividing one or both end edges of both end edges of the folding lock pieces 17a and 17b facing each other by placing the ruled line between them are provided by cutting at a position displaced in relation to the ruled line 7.
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