Why are most insulated flask made of stainless steel?

The reason why stainless steel insulated flask is good is mainly due to its advantages in many aspects. First of all, from the perspective of health and safety, stainless steel 304 is a material widely used in food contact fields. It has passed strict food safety certification and will not release any harmful substances, ensuring the purity and safety of drinking water. In addition, stainless steel 304 has excellent corrosion resistance and oxidation resistance, which can prevent odor or pollution caused by corrosion, and ensure that it can still maintain its original gloss and performance after long-term use.

‌Stainless steel insulated flask are also excellent in heat preservation performance. Usually a double-layer vacuum structure design is adopted, which can effectively isolate heat transfer and keep the temperature of the drink for up to several hours. This design not only ensures the heat preservation effect, but also enables stainless steel insulated flask to provide long-term heat preservation service in cold weather.

‌The durability and easy cleaning of stainless steel are also one of its advantages. Stainless steel is durable and not easy to deform or crack. Even if it is accidentally dropped, it can better protect the liner from damage. At the same time, the surface of stainless steel is smooth, not easy to absorb dirt, and easy to clean.

‌From the perspective of environmental protection and sustainable development‌, stainless steel is a recyclable material that conforms to the environmental protection concept of modern society. Compared with disposable plastic cups, stainless steel insulated flask bottles have a longer service life and lower environmental impact, which helps reduce the generation of plastic waste‌.