| 摘要 |
<p>PROBLEM TO BE SOLVED: To lightly open and close an opening portion with a single motion when opening the opening portion to take out a housed object such as a cake and closing the opening portion. SOLUTION: A cover plate, a pressing plate 8, and a sticking flap 11 are continuously provided successively through creases on one end edge of a bottom surface plate 4 on the side of one opening portion of a packaging container 1, side flaps 9R and 9L are continuously provided through creases between end edges of right and left side surface plates 3R and 3L and cover plate, respectively, and creases (s) and (t) extending in the direction of substantially 45 degrees with the top point, at which the bottom surface plate 4, the cover plate, and the right and left side surface plates 3R and 3L cross, as a starting point are formed on the side flaps 9R and 9L. The width of the pressing plate 8 is set larger than that of the cover plate. The sticking flap 11 is bonded by being turned in along a crease (j) between the cover plate and the pressing plate and fitting a crease (k) of the sticking flap 11 to a crease between the bottom surface plate 4 and the cover plate.</p> |
