| 摘要 |
PROBLEM TO BE SOLVED: To manufacture a packaging paper box to be manufactured without increasing the cost and unsealing the same easily by using a zipper. SOLUTION: A number of breaking cuts 8, 8... are arranged in two lines in the side wall length direction on a pair of side walls 2 and 4 facing each other. The breaking cuts 8, 8... are formed on areas except the vicinity of folds between the side wall 2 and inner flaps 22. Breaking connecting sections 9, 9... between breaking cuts are broken to separate belt-shaped separation sections 10 between two lines from a box main body. Cuts 12 for separating the box main body into an upper section and a lower section and formed along the length direction of the inner flaps 22 are formed on the centers of the inner flaps 22, and a pair of truncated chevron cuts 13, 13 facing the breaking cuts 8 on the wide walls 2 and being convergent toward the upper and lower section separating cut 12 are formed at intervals from folds between the walls 2 and the inner flap 22.
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