Foldable box

Abstract

The invention discloses a foldable box. The foldable box comprises a box body and a box cover, and the box body is provided with a base and a pair of first opposite side plates and a pair of second opposite side plates which are foldably connected to the base; one edge of the box cover is hinged to the top end of the box body; each of the first side plates, the second side plates and the box coveris formed by welding an inner plate and an outer plate, and an insulating layer is arranged between each inner plate and the corresponding outer layer; and the base is provided with a plate-shaped body and protecting edges extending upwards from the periphery of the plate-shaped body, and insulating layers are arranged in the plate-shaped body and the protecting edges correspondingly. According to the foldable box, a very good insulating function is achieved while a folding function is achieved.

Description

technical field [0001] The invention relates to a container, in particular to a collapsible box. Background technique [0002] When the container is used to load food such as fresh vegetables and fruits, especially when cold chain transportation is required, the relative sealing of the container is particularly important, because the transportation of fresh food is easily polluted by the external environment, resulting in food corrosion and deterioration. . Yet existing most of this container, it is generally the container without cover, and fresh food is loaded in the container, and its container top is generally open, and food is very easily affected by external conditions like this. However, the existing container with a cover cannot be folded, so it is extremely inconvenient to store and transport. [0003] Another kind of container used to load fresh vegetables and fruits is the incubator. Existing insulated boxes are mainly a combination of a box cover and a non-fol...

AI Technical Summary

Problems solved by technology

[0004] 1. The main body of the container is formed by blister, blow molding, and rotational molding. Generally, the box is non-folding (because the gap between the folded side panels cannot be solved, and the energy exchange between the inside and outside of the incubator through the gap cannot be prevented) , so the non-folding box takes up a lot of space in the recycling process, and for the distribution industry, it will bear high recycling costs

Secondly, the main body of the container formed by blister, blow molding, and rotomolding processes has a single molding process and a single product structure requirement. Slanted roof, puncture and other structures), its blister, blow molding, and rotational molding processes are difficult to realize (process-limited structure), so the main body of the incubator formed by the blister, blow molding, and rotational molding processes lacks a stable Alignment or hinged structure, while in the transportation process, the reliability is low, the service life is short, and the maintenance cost is high

[0005] 2. The cavity inside the thickness of the side wall of the container is formed by blistering, blow molding, and rotational molding to fill the insulation material (generally polyurethane foam). The main body of the container is generally engineering plastic, which has water absorption and air permeability. Polyurethane The foaming agent will continue to replace the air or moisture in the environment due to diffusion (the cold chain transportation used by the incubator has a large difference in humidity and temperature, and the replacement rate is higher), resulting in a gradual increase in thermal conductivity over time , and ultimately the insulation effect is reduced

In addition, the degradable or cracking process of polyurethane foam is complex, and the existing ones are incinerated, which produces a large amount of toxic gases and causes great environmental pollution.

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