1, stainless steel

Stainless steel thermos cup is not easy to produce corrosion, pitting and corrosion, and is wear-resistant and durable; Nowadays, it has become a new trend of using cups in modern families. The stainless steel thermos cup is gorgeous, bright, fashionable and durable, which adds design color to our plain life. And has the characteristics of firmness, tight combination and being difficult to be destroyed; Stainless steel thermos cups are generally made of food-grade 304 stainless steel, with chromium content of 16%, good stability, strong corrosion resistance, no rust after long-term use, and the function of insulating ice water besides hot water.

2. Pottery

Ceramic thermos cups are 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 thermos cup may reach thousands of dollars. However, ceramic thermos cups are completely harmless and will not produce harmful metal substances like other materials.

3, purple sand

At present, the inner container of some brand products of front-end thermos cups is made of authentic pure natural purple clay (less output), and the outer layer is made of stainless steel, but it is the purple sand material that makes the thermos cups have other functions, so the thermos cups with stainless steel as the outer body and purple sand as the inner container are usually called purple sand thermos cups in the industry. Besides the basic functions, it can also make tea, which has the functions of health preservation and conditioning. Strong adaptability to sudden change of cold and heat, no burst due to sudden change of temperature, slow heat transfer and no burning.

4. Glass

Glass is a very stable substance, which is sintered from inorganic silicate. Glass is easy to clean and very safe; But the glass thermos cup has a disadvantage that it is easy to break, so it is inconvenient to carry it with you.

5. Plastic

Plastic thermos cups only have the function of heat insulation, and the heat insulation effect is far from other thermos cups. Although it can be insulated, the insulation time is short and the heat dissipation is fast, which is not suitable for autumn and winter. And in the history of the development of thermos cups, many people in the industry said that plastic thermos cups are likely to contain carcinogens and need to be purchased carefully.

To sum up, the commonly used materials in the industry are stainless steel, ceramics, purple sand, glass and plastic. As can be seen from the above, stainless steel thermos cup is the best choice now. Although ceramics have high safety performance and contain no harmful substances, they are rare in the market. Purple sand has the function of heat preservation, warm in winter and cool in summer, but authentic and pure natural purple sand mud is rare. Glass has high stability, but it is not portable and fragile; Plastic thermos cups are suspected to be carcinogens, and the insulation effect and time are also very poor, so they need to be purchased carefully.