| 摘要 |
PROBLEM TO BE SOLVED: To provide a packing box capable of preventing liquid leakage from a corner part of a bottom plate with a simple constitution, on one side surface, for the purpose of the present invention.SOLUTION: A packing box on one side surface of the present invention comprises: a rectangular bottom plate; a box body for forming a storage space of a storage object by four sidewalls respectively connected to the four side edges of the bottom plate; and an extension piece arranged between adjacent two sidewalls of at least any among the four sidewalls and extending from the edge of one sidewall. The extension piece comprises; a corner part of abutting on a corner part of the bottom plate; a fold line part for dividing the corner part into two parts; and a cut-in part of extending toward the fold line part from the edge of the other sidewall side. The extension piece is also formed as a connection area for connecting an area up to a cut-in part from the corner part to the edge of the other sidewall among the edge of the other sidewall side, and its other area is formed as a disconnected area cut off from the edge of the other sidewall, and is thereby formed so as to overlap with the other sidewall when assembling a box body by bending along the edge of one sidewall. |
