| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging container with an inner bag in which the bottom part of the inner bag is equally stretched and is opened flatly in accordance with folding and opening a box main body. SOLUTION: An A-type corrugated fiberboard box or a box similar to this consists of a box main body in which ridge-folding outward projecting intermediate folding lines over lid flaps and bottom flaps along the centers of the widths are formed on both left and right side walls, and both front and back face walls can be folded doubly, and a foldable inner bag which is stored in the box main body and is a gusset-type by W-folding from both sides to the bottom wall. On the inner bag folding gusset type, a bottom piece walls integrally constituting the bottom wall are continuously provided on the lower ends of respective face walls respectively corresponding to four faces of both front and back face walls and both left and right side walls of the box main body, and valley-folding or W-folding inward projecting intermediate folding lines are formed along the centers of the widths over the bottom piece walls on left and right face walls. The inner bag is stuck on at least both front and back face walls to the box main body so that the inner bag can be folded and opened in following folding and opening of the box main body. COPYRIGHT: (C)2008,JPO&INPIT
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