| 摘要 |
A box has two long sides, two short sides, and two ends and is molded from a single sheet of plastic. On the sides adjacent the ends are configurations which define a reentrant pocket on the exterior face, and a corresponding protuberance on the opposite face. When the blank is folded into the box these protuberances meet together to define the ends of the box. At the distal edges of the distal sides of the blank are flaps for securing the distal edges together when the blank is formed into a box. One flap can have molded buttons and the other flap mating molded sockets; or, alternatively, the flaps can be heat welded to each other. Where the blank is to be folded between the sides there are longitudinal grooves on the inner side to provide a hinge. On the face of the sides between the end configurations are a plurality of depressions which add rigidity to the sides. These depressions can be in a form to provide cut-outs or molds for children.
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