| 摘要 |
PROBLEM TO BE SOLVED: To provide a band-shaped unsealing structure, which has strength and unsealing function equal to that of a conventional band-shaped unsealing structure and does not cause a pain on a hand upon breaking up a paper box, and a corrugated box or a paper box with such an unsealing structure. SOLUTION: Two parallel curved cut lines (3), each having the bent front and rear ends, are formed intermittently and regularly at the same phase along an unsealing direction on an expected opening part on a paper box (20) or the like. Each cut line (3) is a chevron-shaped curved line, which is a combination of a linear horizontal line and a sloped line extending from one end of the horizontal line, and is lined up laterally so that the sloped line is arranged inward. The front and rear ends of the cut line (3) are bent to the outside relative to the unsealing direction, which makes the cut line (3) into a deformed shape of 3. Thus, the cut lines (3) as deformed shapes of 3 are formed consecutively in the same direction, with the horizontal part of each deformed shape of 3 aligned, via respective connecting parts. COPYRIGHT: (C)2004,JPO
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