Is there a standard for insulated time of the stainless steel vacuum flask?

Is there a standard for the insulated time of the stainless steel vacuum flask? Answer: Yes. According to the international industry standard, after pouring 96℃ hot water and sealing, after 6 hours, the temperature of the water in the cup cannot be lower than 45℃.

Why do the water cups in the market have different heat preservation times? Various brands of water cups on the market, and even thermos cups of different styles under the same brand, cannot achieve the same heat preservation time.

First of all, it is caused by different structures, different capacities, and different material properties and specifications of the water cups. Secondly, the heat preservation time of the water cup is also affected by the function and use environment.

The international standards mentioned above have actually been formulated for more than 50 years. With the advancement of society and the improvement of people's quality of life, this standard obviously can no longer fully satisfy people. At the same time, in order to advertise their own quality and promote their products, each brand of water cups takes the heat preservation time as a competitive indicator. The market propaganda will also promote the view that the longer the heat preservation time is, the better the drinking bottle.

As a result, the factory, in order to meet the requirements of brand owners, and also to meet the needs of the market, has privately changed the insulation standard of water cups from the international limit of 6 hours, to 8 hours, and then to 12 hours. In order to meet the needs of specific market groups, our company has also developed a thermos cup that keeps heat for more than 16 hours. But most of the time when people use a thermos cup, they don’t need to keep it warm for so long, which is inconvenient for people to use. Usually, the heat preservation time is 6-8 hours, which is enough for people to work a day.

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