The present invention discloses an asymmetric packaging belt, which beaks the conventional art and creatively designs diagonal parallel ridge combinations composed of deep diagonal parallel ridges and shallow diagonal parallel ridges which are inclined in different directions and are arranged on the front surface and the back surface of the packaging belt, such that the tensile properties of the packaging belt can be improved in the case of the same gram weight, thereby solving the existing problems in the prior art. The present invention provides an asymmetric packaging belt, provided with a front surface and a back surface, further comprising diagonal parallel ridge combinations, each diagonal parallel ridge combination comprises deep diagonal parallel ridges inclined towards one side and shallow diagonal parallel ridges inclined towards the other side; the height of the diagonal parallel ridges protruding from the surface of the packaging belt is defined to be h, the height of the deep diagonal parallel ridges is h.sub.1, and the height of the shallow diagonal parallel ridges is h.sub.2, wherein h.sub.1>h.sub.2; the diagonal parallel ridge combinations are arranged on both the front surface and the back surface.

The present invention relates to a storage box with a base body, having side walls, a cover, especially a lid, and a fastening device for the cover, wherein the fastening device has at least one elastic tension element, wherein the cover can be fixed relative to the storage box by means of the tension element and wherein the elastic tension element is guided in sections on an inside of the side walls and thereby provides an internal support for the cover on the storage box.

The present invention discloses a box, comprising: a box body; a box cover, wherein the box cover is covered at an opening of the box body, a limiting cylinder is formed on the bottom end of the box cover near an outer edge, and the bottom end of the box cover is provided with an annular clamping groove located at the outer side of the limiting cylinder; an elastic sealing ring which comprises: a top sealing ring, an inserting flange; a middle sealing cylinder, and the middle sealing cylinder is sleeved on the outer cylinder wall of the limiting cylinder; and a bottom sealing ring, and the outer edge of the bottom sealing ring is in compression sealing contact with the inner wall of the box body.