Packaging box

Abstract

The invention belongs to the technical field of packaging boxes, and particularly relates to a packaging box. The packaging box comprises a top cover, an outer box body, a reaction module and a storage box body. In the use process of the packaging box, a frozen shell needs to be subjected to freezing treatment, when the frozen shell is subjected to refrigeration treatment, frozen media in four frozen blocks are prevented from flowing back into the frozen shell, then the four frozen blocks are pressed into a group to be placed on the frozen shell, the space occupied by a refrigerator when the frozen shell is frozen is reduced, and freezing of the frozen shell is facilitated; meanwhile, in the design of the reaction module, in the process of refrigerating objects in the storage box body, ifthe frozen media in the frozen shell and the frozen media in the frozen blocks are melted in a heat absorption mode, the reaction module is triggered through the change of the volume of the frozen media, so that the substances in the shell of the reaction module located on the two sides of an isolation plate are in contact with each other to generate a chemical reaction, the frozen media in the frozen shell and the frozen media in the frozen block can be frozen again; and the refrigerating time of the packaging box is prolonged.

Description

[0001] Technical field [0002] The invention belongs to the technical field of packaging boxes, and particularly relates to a packaging box. Background technique [0003] With the rapid development of the express delivery industry, when transporting express items that require refrigeration, the outer side of the express items is usually wrapped with a layer of ice, and then the outer side of the ice is wrapped with foam for insulation. However, during the transportation process, the ice The blocks will gradually melt over time, and the refrigeration of the express items will fail, causing the express items to be heated and damaged, and the cold storage time is shorter. The design is suitable for the express industry, and the cold storage time is very necessary. . [0004] The present invention designs a packaging box to solve the above problems. Summary of the invention [0005] In order to solve the above-mentioned defects in the prior art, the present invention discloses a packag...

AI Technical Summary

Problems solved by technology

[0003] With the rapid development of the express delivery industry, when transporting express items that need to be refrigerated, the outside of the express items is usually wrapped with a layer of ice cubes, and then the outside of the ice cubes is wrapped with foam to keep them warm. The block will gradually melt over time, and the cold storage of the express items will fail, causing the express items to be damaged by heat, and the cold storage time is short. The design is suitable for the express industry, and a cooler with a longer cold storage time is necessary.

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