| 摘要 |
<p>PROBLEM TO BE SOLVED: To change the size of a carton in response to the size of a content to be fitted, without spoiling the rigidity. SOLUTION: Side surface plates 11, 12, 13, 14, a bottom surface plate 30, and flaps 21, 22, 23, 24 at the upper sides of the side surface plates 11, 12, 13, 14 are respectively provided, and a folding line (d) is provided on each flap at the same height in the horizontal direction for a box main body A. A flexible carton is constituted of such a box main body A and a lid B.</p> |
