| 摘要 |
<P>PROBLEM TO BE SOLVED: To break walls exactly in a target direction without damaging a breaking function even when a position gap is generated during manufacture. <P>SOLUTION: In the breaking ruled line structure, a folding line 19a is mounted in the boundary between the first and second neighboring walls (side walls 12A and 12B and upper-outer flaps 16A and 16B), and the first and second walls (12A, 12B, 16A and 16B) are broken along the folding line 19a. The breaking ruled line structure includes: a plurality of oblique cutting parts 27 each obliquely extending to the first and second walls (12A, 12B, 16A and 16B) so as to obliquely cross the folding line 19a and arranged parallel to each other at a predetermined interval; and breakage-stopping cutting parts 28a and 28b each located between both the ends of the neighboring oblique cutting parts 27 and 27 and obliquely extending reversely to the oblique cutting parts 27. <P>COPYRIGHT: (C)2012,JPO&INPIT |
