Components and structure of thermos flask

A thermos flask, also known as a thermos, is a double-layered container used to keep drinks hot or cold for an extended period of time. It is composed of a variety of carefully selected materials for insulation and durability. <a href="https://www.ervanflask.com>Ervan thermos flask manufacturer discusses the different materials needed to make thermos flasks.

1. Shell

The shell of a thermos bottle is usually made of stainless steel or plastic. Stainless steel is highly preferred for its durability, corrosion resistance, and ability to maintain the temperature of its contents. Plastic casings, on the other hand, are lightweight and better resistant to shocks.

2. Inner bottle

The liner is the most critical component of the thermos as it holds the drink and provides insulation. It is usually made of glass or stainless steel. Glass flasks are known for their excellent insulation properties and resistance to chemical reactivity. However, they are fragile and prone to breakage. Stainless steel flasks, on the other hand, are sturdier and less likely to break.

3. Vacuum insulation

The vacuum insulation layer is the key to whether the thermos bottle can maintain the temperature of the contents. It is created by evacuating the air between the inner bottle and outer shell, leaving a vacuum. This layer prevents heat transfer via conduction and convection, keeping drinks hot or cold for longer.

In addition, some thermos bottles have an additional thermal insulation layer between the inner tank and the vacuum insulation layer. This additional layer is made of foam or other insulating material to enhance the bottle's thermal performance.

All in all, thermos flasks require specific materials to ensure their functionality and performance. The housing is made of stainless steel or plastic, which is durable and insulating. The inner bottle is made of glass or stainless steel to hold the drink and has thermal insulation properties. Vacuum insulation and potentially additional insulation play a vital role in maintaining the required temperature. Through careful selection and combination of these materials, thermos bottles can effectively keep our drinks hot or cold for a long time.