SHAPE-MAINTAINING RECTANGULAR-PARALLELEPIPED PACK

摘要

The present invention relates to a shape-maintaining rectangular-parallelepiped pack, comprising: a rectangular-parallelepiped pack having an internal space of predetermined size and having a covering part able to open and close; base bands of predetermined surface area which are attached and secured to the floor surface of the rectangular-parallelepiped pack; a lift band which is securely provided perpendicularly in the central position of the base bands; and a plurality of truss bands of which the respective ends are securely joined to the base bands and the lift band, thus being securely provided in a diagonal direction or criss-crossing direction; and consequently the present invention not only provides the advantage that the structure is uncomplicated and production is easy such that production costs are low while large-scale production is nevertheless possible, but also provides the advantage that, because the tension of the truss bands can be adjusted in stepped fashion, shape maintenance is improved as improved internal binding can be maintained to match the weight which is dependent on the amount of filling material held inside.