Self-heating food packaging box

Abstract

The invention discloses a self-heating food packaging box which comprises an inner box, a bottom plate, a folding soft plate and a shell, the inner box is located in the shell, the bottom plate is located on the outer surface of the lower end of the inner box and slidably connected with the inner box, a telescopic ring is slidably connected to the inner surface of the upper end of the folding softplate, a placing groove is formed in the outer circle face of the folding soft plate, a first air bag is slidably connected to the inner surface of the placing groove, a one-way valve is fixedly connected to the outer surface of the first air bag, the one-way valve penetrates through the folding soft plate and is externally connected with an air pump, a sealing cover plate is fixedly connected tothe outer surface of the upper end of the folding soft plate, and an air outlet hole is formed in the outer surface of the upper end of the sealing cover plate. The food packaging box has the advantages that when the food packaging box is used, the folding soft plate is subjected to vacuum compression, so that food in the packaging box is extruded in the inner box, the food is wrapped, and damageto an outer packaging bag due to shaking of the food is avoided.

Description

technical field [0001] The invention relates to the technical field of food packaging, in particular to a self-heating food packaging box. Background technique [0002] With the acceleration of people's life rhythm, there are more and more "fast and convenient" self-heating foods on the market. Well-known domestic and foreign brands have launched a series of products such as self-heating rice, self-heating hot pot, self-heating rice noodles, and noodles. There are also a wide variety of self-heating food packaging designs that follow. [0003] The existing patent (notification number: CN201920225057.X) is a self-heating food packaging box, including a box cover, an outer box and an inner box. The inner box is embedded in the outer box from the top opening of the outer box. The inner box There are two positional relationships between the box and the outer box: the packaging overlapping state and the heating and separating state. In the packaging overlapping state, the bottom...

AI Technical Summary

Problems solved by technology

[0005] 1. With the rapid development of society, there are more and more fast and convenient self-heating foods on the market, followed by more and more packaging boxes for self-heating foods, and for the convenience of users to use , the internal space of the packaging box is also increased as much as possible, so as to facilitate the use of the user, but the increase of the internal space of the packaging box will lead to a decrease in the portability of the self-heating food, resulting in a decrease in the eating rate of the self-heating food, and Most of the self-heating food is placed directly inside the packaging box. The inside of the packaging box with a large space is easy to deform the outer shell when the outside world squeezes it, resulting in damage to the food bag inside the packaging box, which leads to its insufficiency. able to be eaten;

[0006] 2. The larger the self-heating food packaging box, the more excess space inside it, the easier it is to cause the food packaging box to deform, which makes the storage of the food packaging box more difficult. When the existing packaging box is stored, its surface The load-bearing capacity is poor. When stacking, the food packaging box at the bottom of the stack will be deformed due to the extrusion of gravity, because the self-heating food packaging box is made of hard plastic, so the packaging box is squeezed After the deformation occurs, cracks will appear at the folds, so that during the self-heating process, there is a risk of steam leakage, which threatens the personal safety of users

Images