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The heat preservation bottle and the cold preservation bottle are actually one kind of thing – thermos water bottle.

The heat preservation principle of the thermos water bottle is not complicated either. The main reason lies in its vacuum layer. The inner liner of the thermos water bottle and the bottle body are vacuumed to form a vacuum layer. As we all know, vacuum does not conduct heat, so the heat will always be maintained at the original temperature, and the heat emission will be very slow. Some manufacturers of thermos water bottles will plating copper or silver on the inner liner of the thermos water bottle to reflect the heat radiation, in order to achieve the purpose of heat preservation, the more heat, the longer the heat preservation time will be, so the heat preservation effect of large capacity thermos water bottle will be better.

Thermos water bottle is generally made of 304 or 316 stainless steel. 304 high temperature resistance, with excellent corrosion resistance, is generally widely used in medical equipment and food utensils, so as the material of the thermos water bottle, it has little harm to human body.

Compared with 304 stainless steel, 316 stainless steel thermos water bottle material is better, of course, the cost will be higher. Corrosion resistance and high temperature strength are particularly good, even in very harsh conditions, the use effect will be very good, 316 material has higher strength than 304 material, and the service life will be longer.

Cold preservation bottle. The extended special water bottle for cold preservation is generally designed as a wide mouth bottle according to the purpose of cold preservation. It is easy to put cold drinks and ice, and the bottle cover is more suitable for direct drinking. It's no problem to install hot water, but because of the wide mouth and integrated bottle cover design, the heat preservation effect is not good.