Why are insulated stainless steel lunch boxes cylindrical?

Recently, Xiaobian is developing a stainless steel lunch box project.Today, I will take this opportunity to tell my friends why the stainless steel insulated lunch boxes are all cylindrical in the market.

We all know that if stainless steel products can be insulated, they must be double-layered, and the air in the double-layered interlayer must be evacuated through a vacuuming process, so as to achieve the effect of insulating temperature conduction and heat preservation.The stainless steel water cups used by friends use such a process to have the function of heat preservation.

When you buy insulated lunch boxes in the market, you will find that they are all cylindrical, while most of the square lunch boxes are single-layer stainless steel lunch boxes that are not insulated.The square stainless steel double-layer lunch box that can be found occasionally is also found not to be vacuumed, Why is there no vacuumed square stainless steel lunch box?

Why the insulated stainless steel lunch box is cylindrical is mainly a matter of process and cost.Cylindrical products are easier to process whether they are welded, shaped or vacuumed, and the production loss is small.On the contrary, if the square lunch box is made into a double-layer vacuum, it is more difficult to process.First of all, it is necessary to solve the problem of deformation of square lunch boxes in production, and the most important thing is to solve the problem of vacuum deformation.

When these problems are solved, adjustments to the production equipment are also required.Taking polishing as an example, cylindrical polishing will be relatively high in terms of polishing effect and polishing efficiency.However, once the square box is polished, the production efficiency will be greatly reduced, and the polishing effect will be as good as the cylindrical effect.

Therefore, many manufacturers think that producing a product that is troublesome to manufacture and has a high cost is put into the market, and it is not known whether there will be expected market benefits, so they will no longer develop such a product attentively.This is why there are many cylindrical insulated lunch boxes and few insulated stainless steel square lunch boxes on the market.

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