| 摘要 |
<p>PURPOSE:To enable the closing of the top edges of a case without using any bonding means, by pushing the retaining parts thereof downward while folding them outward with a crease folded with the two sides thereof intersecting at a point and placing two joining parts together in close facial contact with each other. CONSTITUTION:To close the top edges of a case with its content placed therein, folding pieces 11c and 11d are folded inside bending parts 9c and 9d, which are thereafter bent along a vertical crease 8 and, at the same time, retaining parts 7c and 7d are pushed downward while being folded outward with a crease 6 folded with the two sides thereof intersecting at a point, whereby closing parts 4a and 4b are inclined inward closing the top edges of the case with two joining parts placed together and the retaining parts 7c and 7d are folded flatly. The bending parts 9c and 9d are also pulled outward by the part of the thickness of the folding pieces 11c and 11d which have been previously folded inward and the joining parts 5a and 5b are retained in close facial contact with each other. The formation in this way of the case permits an easy closing thereof without using any bonding means to join the top edges thereof as well as an easy opening and closing thereof.</p> |
