| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reliably prevent occurrence of breakage by reducing concentration of the forces. <P>SOLUTION: A packaging box component (a lid body 20) has: side walls 22a-22d erected from an outer peripheral edge of a rectangular closing wall (a top wall 20); and a pair of folding curves 25 extending from a corner part with the closing wall in an inwardly inclined manner on a pair of opposing side walls 22b, 22d which is deformed in a substantially flat manner by overlapping the side walls 22a-22d on the closing wall when being folded along the folding curves 25 in a non-use condition. A center folding curve 28 located at the center in the transverse direction, and a pair of side folding curves 29a, 29b located on both sides in the longitudinal direction across the center folding line 28 on both sides in the transverse direction of the center folding curve 28, are provided on a boundary part of the other pair of side walls 22a, 22c not to form the folding curves 25 out of the side walls 22a-22d with the closing wall. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
