Views: 201 Author: Site Editor Publish Time: 2020-12-03 Origin: Site
Sometimes some people mistakenly think that a thermo flask is a vacuum flask. In fact, there are some differences between a thermo flask and a vacuum cup. Their differences are mainly manifested in the aspects of material, price, and thermal insulation performance.
The thermal insulation cup and the vacuum cup have the same insulation principle. They have a cover on the top and are tightly sealed. The vacuum insulation layer can delay the heat dissipation of liquids such as water inside to achieve the purpose of insulation. However, the material is different. Insulation cups are generally made of ceramic, double glass or stainless steel plus a vacuum layer to hold water, while vacuum cups are generally made of stainless steel plus a vacuum layer. The more common cups or bottles made of these materials on the market include stainless steel thermal flask, built stainless steel tumbler, and thermocafe stainless steel flask, etc.
Generally people think that the thermal insulation cup is equivalent to the vacuum cup, because only the vacuum-treated cup can have a better effect of heat preservation and cold preservation. In fact, some businesses will add an ordinary thermos cup. In fact, this kind of cup is a cup that has not been vacuum treated or a cup that has failed to vacuum. Compared with the vacuum cup, the appearance and material may be the same, but the heat preservation effect is greatly different. Vacuum cups with high vacuum rate, such as double wall vacuum insulated bottle and lock hot & cold vacuum bottle, can keep up to 10 hours.
In general, the ordinary heat-preserving cups on the market can at most serve the function of heat insulation. The hot water is injected for 2-3 hours and it is the same as room temperature. The price of this kind of cup is much lower than that of thermos vacuum insulated flask. Consumers must pay attention to this when buying, and don't be fooled. Because not all thermos cups are vacuumed inside and outside. Cups are mostly divided into insulated cups, foam cups, and thermos cups. Different names have different heat preservation effects.
1. If the outer layer is plastic or ceramic, the inner layer is stainless steel, there are 3 possibilities: one is that the insulated cup is not evacuated, it is simply two layers; the other is the insulated cup, the cup has 3 layers, the inner, middle and outer layers, and the outer layer is plastic or ceramic. In fact, it is also a thermos. The third type is a foaming cup, which is filled with foaming liquid inside and outside.
2. If the inner layer is made of plastic and the outer layer is made of plastic or stainless steel, there are two possibilities: One is a simple two-layer insulated cup, and the interlayer is neither vacuumed nor filled with foaming liquid; the other is a foam cup, the inner and outer layers of which are filled with foaming liquid, which can keep cold or keep warm.
1. Double-layer stainless steel thermo flask has no heat insulation function. After pouring boiling water, the cup body will heat up.
Double-layer stainless steel heat preservation performance: It can keep heat and cold. Put the product in an environment of 20℃ and 2℃, pour in hot water of 95℃ and 1℃, tighten the lid for 2 hours, and the water temperature is ≥45℃. The principle of double wall stainless steel flask is the same as above.
2. Stainless steel vacuum cup: It has a good thermal insulation function. After pouring boiling water, the cup body will not be hot.
Stainless steel’ true heat preservation efficiency: It can keep heat and cold. Put the product in an environment of 20℃ and 2℃, pour in hot water of 95℃ and 1℃, tighten the lid for 6 hours, and the water temperature is ≥45℃.
To sum up, this is why the price difference between the same model of thermo flask and vacuum cup is very large.
In summary, when buying a water bottle or cup, it is necessary to verify its material, price, and heat preservation. After understanding these basic knowledge, you can also choose to contact the merchant to select custom stainless steel tumblers.