How to vacuum a stainless steel thermos cup

1. The principle and importance of vacuum insulated cups
Thermos cups generally adopt the principle of vacuum insulation, which is to isolate the insulation layer from the environment so that the heat in the cup will not be radiated outward, thereby achieving the effect of heat preservation. Vacuum insulation technology can not only extend the heat preservation time of drinks, but also prevent the invasion of dirty air and bacteria, making it more hygienic and safer.

2. How to vacuum a stainless steel thermos cup
1. Natural vacuuming method
First, pour out the water in the cup, then tighten the lid and place it upside down in the water. If some bubbles leak out, it will prove that air pressure has entered the cup. Then turn the cup upside down and wait for a few hours. A vacuum will form inside the cup. At this time, you can turn the cup upside down and open it to maximize the vacuum insulation effect. The advantage of this method is that it is simple to operate and does not require any tools, but it takes a longer time to vacuum.
2. Valve vacuuming method
Some thermos cups on the market have valves. You can press the valve to expel the air in the cup, and then release the valve to wait for air to enter, and then the vacuum can be drawn out. This method is relatively quick and suitable for most thermos cups, but it should be noted that if the quality of the valve is not good, it may leak.

3. Vacuum pump methodIf you need a more efficient and stable vacuuming effect, you can equip it with a professional vacuum pump. First, install a vacuum cup lid in the cup, insert the suction port of the pump into the top of the cup lid, and under the command of the pump, the air in the cup can be quickly extracted, and finally a vacuum state is obtained. The advantages of this method are simple operation and high vacuuming efficiency, but it requires a vacuum pump, which is troublesome and costly.
3. Summary
Vacuuming technology is very important for the insulation effect of the thermos cup, and there are many methods for vacuuming stainless steel thermos cups. Although the natural vacuuming method is safe and easy to operate, it takes a long time; the valve vacuuming method is suitable for most thermos cups; the vacuuming pump method can achieve a more efficient and stable vacuum effect, but requires a vacuum pump. Ultimately, we can choose the vacuuming method that best suits us based on our needs and actual situation.