| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a developable container whose contact portion with contents is limited to one face only of a sheet member, of which the operation of assembly and development is easy, which takes no large space when stored, and in which stress concentration at corner portions is avoided. <P>SOLUTION: The developable container formed by folding a sheet-like member has a rectangular bottom face. Portions extending from the respective sides partitioning the bottom face are raised as side walls. Each portion between the adjacent side walls is folded outward at each corner, or at each part near the corner, of the bottom face as an apex to form a rectangular box. Each folded-out portion is further folded down to the side of the side wall of the box, and holding members are provided which are engaged with the folded-out portions folded down to control a repulsive force of and the flapping of each folded-out portion and which hold positions where the folded-out portions are folded down. By deviating the apex of fold lines partitioning each folded-out portion from a position of each corner portion of fold lines partitioning the bottom face, it is designed so that stress is not concentrated to each corner portion of the container. <P>COPYRIGHT: (C)2003,JPO</p> |
