| 摘要 |
PROBLEM TO BE SOLVED: To provide a package box enabling a user to store and cover even when contents are a little larger than a volume of the package box to cause swelling, and flatly foldable by flatly squashing when not used for preservation.SOLUTION: A package box includes: a pair of first side parts facing each other; a pair of second side parts facing each other in a form orthogonal to the first side parts when assembling; an outer flap provided through a crease on the top edge each of a pair of the first side parts; and an inner flap provided through a crease on the top edge each of a pair of the second side parts. The outer flap is provided with a partial extention part so as to be superposed on a part excluding the other opposed outer flap partial extension part. |
