Dismantling of the quality dimension of the insulated water bottle
How to check the quality of an insulated water bottle?
Today NOWEST(a professional water bottle manufacturer) will share our experience with everyone.
The principle of a thermos bottle is a container composed of ceramic or stainless steel, and a vacuum layer is responsible for heat insulation to delay the heat dissipation of the liquid in the container. Among them, several factors that affect the thermal insulation effect and safety are involved: the material of the inner tank, the vacuum layer, and the plastic material.
-
Liner material
Let’s talk about the material of the inner tank first. The common stainless steel materials on the market are 201, 304, and 316. 201 belongs to industrial stainless steel, not food grade, and its corrosion resistance, acid, and alkali resistance are not strong. This material insulation bottle does not purchase! Both 304 and 316 are stainless steel materials that comply with the provisions of the “National Food Safety Standard for Food Contact Metal Materials and Products”. In recent years, thermal insulation bottles made of titanium and other materials have appeared, and their thermal insulation effect and corrosion resistance are more powerful than those of stainless steel.
-
Vacuum layer
Speaking of the vacuum layer, the world’s first commercialized stainless steel double-layer high-vacuum thermos was born in 1979 and was launched by THERMOS Group. It is far-reaching, but because the production process of the vacuum layer is not complicated, the single-layer and double-layer vacuum designs on the market are relatively diverse. From the perspective of the thermal insulation effect, there are also many brands that come from behind.
-
The plastic material of the bottle lid
Most of the thermos bottles on the market are made of stainless steel and vacuum insulation technology, but the lid part is undoubtedly the fastest to dissipate heat. Fast heat dissipation means that there are certain requirements for the material of plastic. The common ones on the market are Food grade silicone and PP material. PC plastic material will release Bisphenol A in an environment of 100 ℃. Do not buy a thermos bottle made of this material!
Misunderstandings in the use of thermos bottles
1) Stainless steel thermos bottles, do not contain juices, carbonated drinks, etc. Unqualified stainless steel liner is easy to precipitate heavy metals because of their poor corrosion resistance;
2）Do not hold tea leaves in thermos bottles. Tea leaves in a constant temperature environment for a long time will be destroyed by a large number of vitamins and are volatile, which not only affects the taste of tea soup but also increases harmful substances;
3）Try not to soak red dates and wolfberry in the thermos bottle, it may explode. After the red dates are soaked in water, it is easy to ferment and generate inflatable gas after being stored for a long time. When the pressure in the bottle is too large, and then unscrew the lid of the bottle, it is easy to explode.
