| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a container including a main part of the container formed by folding back a sheet which consists of a piece of synthetic resin film. <P>SOLUTION: Mountain fold lines prolonged in parallel via belt-like walls 5 inside each edge of the main part sheet of rectangular shape which consists of a synthetic resin film and valley fold lines prolonged in parallel via gusset walls 6 inside the mountain fold line concerned are prepared, whereas a bottom wall 7 is formed in a central part of the main part sheet. Because being folded back in the shape of a mountain fold along the mountain fold line, while folding back in the shape of a valley fold along a valley fold line containing a sheet edge of the corner part 8, a main part sheet constitutes a folding flat object which includes a plurality of gather parts 13 of folded state on the sheet edge located both ends of the gusset walls 6 to be folded back, and because an adherence part 14 is formed which adheres the gather parts 13 in sandwich-like, a three-dimensional 15a is formed in which the gusset walls 6 and the bottom wall 7 positioned at parts other than the adherence parts 14 are deployed downward via downward shift of the bottom wall 7. <P>COPYRIGHT: (C)2013,JPO&INPIT |
