| 摘要 |
PROBLEM TO BE SOLVED: To collapse a packaging box easily into a substantial flat shape not occupying a wide location when the packaging box for storing supplemental medicine or the like is to be disposed as waste material. SOLUTION: A packaging box 1 is divided into an upper section and a lower section by tearing a pair of tearing perforations (i), (j) formed at adhesion pieces 8 arranged at a front plate 3 forming a circumferential wall of a packaging box and cooperatively arranged at each of its both right and left end edges and adhesion pieces 9 cooperatively arranged at a rear surface plate and at each of its both right and left end edges. Since both front plate 3 and the rear plate are formed with folding lines (k) extending at an angle of about 45 deg. from their four corners, pushing-down either the upper plate 6 or the lower plate 7 inwardly enables the front plate 3 and the rear plate at the upper half section and the lower half section of the packaging box 1 to be folded along the folding lines (k) set by about 45 deg., resulting in that both the upper half section and the lower half section of the packaging box 1 are crushed into a substantial flat shape.
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