Reusable low-temperature packaging box

Abstract

The invention belongs to the technical field of packaging boxes and particularly relates to a reusable low-temperature packaging box. The reusable low-temperature packaging box comprises a top cover,an outer box body, a reaction module, a freezing cover and a freezing box body. In the using process of the packaging box, firstly, two first freezing plates and two second freezing plates of the freezing box body are folded, so that the size of the freezing box body is reduced; and then, the freezing box body can be put into a refrigerator for freezing treatment. The two first freezing plates andthe two second freezing plates of the freezing box body are folded, so that the occupied space of the freezing box body is reduced, and the freezing box body can be frozen conveniently; meanwhile, bymeans of the reaction module, after the freezing box body and a freezing medium in the freezing cover are molten, the reaction module is triggered through the size change of the freezing medium, so that substances located at the positions, at the two sides of an isolating plate, inside a shell of the reaction module are in contact with each other for a chemical reaction; heat of the freezing medium in the freezing box body and the freezing cover is absorbed, so that the freezing medium is refrozen; and the refrigerating time of the packaging box is prolonged.

Description

[0001] Technical field [0002] The invention belongs to the technical field of packing boxes, in particular to a reusable low-temperature packing box. Background technique [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. . [0004] The present invention designs a reusable low-temperature packaging box to solve the above problems. Contents of the invention [0005] In order to solve the above-mentioned defects in the prior art, the present invention disclo...

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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