1. Stainless steel
The stainless steel vacuum flask is not prone to corrosion, pitting, rust, abrasion resistance, and is durable; now it has become a new trend in modern home use cups. The vacuum flask made of stainless steel has a magnificent, bright, stylish and durable appearance. It adds design color to our ordinary and tasteless life, and has the characteristics of sturdiness and solidity, and is not easy to be damaged; the stainless steel vacuum flask is highly corrosion-resistant, will not rust after long-term use, and has heat preservation except hot water Ice water effect.
2. Ceramics
Ceramic vacuum flask is not very common in the insulation industry, and the price will be several times more expensive than other materials. The price of a good porcelain vacuum flask may reach thousands of yuan. But the ceramic vacuum flask is completely harmless and will not produce harmful metal substances like other materials.
3. Purple sand
Nowadays, the inner tank of some more front-end vacuum flask brand products is made of authentic pure natural purple sand mud (less production), and the exterior is made of stainless steel. But it is precise because of the purple sand material that the vacuum flask has many other functions, so the industry Inside, a vacuum flask with stainless steel material as the outer body and purple sand as the inner tank is usually called the purple sand vacuum cup. In addition to basic functions, it can also make tea, has health maintenance, conditioning, etc., has strong adaptability to rapid changes in cold and heat, and will not burst due to rapid changes in temperature, slow heat transfer, and does not burn hands.
4. Glass
Glass is made of sintered inorganic silicate, which is a very stable substance; and the glass cup is easy to clean and very safe; but the glass vacuum flask has the shortcoming of being easy to break and cannot be carried around, which is very inconvenient.
5. Plastic
Plastic insulation cups only have the function of heat insulation, and compared with other materials of insulation cups, the insulation effect is far different. Although it can be kept warm, the heat preservation time is relatively short, and the heat dissipation is fast, so it is not suitable for use in autumn and winter.
The materials commonly used in thermos cups are stainless steel, ceramics, purple sand, glass and plastic. Stainless steel vacuum flask is the best choice today. Although ceramics have high safety performance and contain no harmful substances, they are relatively rare in the market; purple sand has the function of keeping warm in winter and cool in summer, but the authentic pure natural purple sand mud is less produced. , It is also very difficult to see; the glass has high stability, but it cannot be carried around and is fragile.