Foaming equipment is used in product packaging to inject raw materials that can produce plastic foam into the gap between the container and the contents lined with thin film, and to form a foam cushioning material by chemical reaction. 

Principle. 

Foaming equipment is a foam equipment that can make a certain concentration of aqueous solution of foaming agent. 

Foaming agent itself can not automatically become foam, it must be through the mechanical action of the foaming machine in order to become foam. 

Foaming machine and foaming agent are a technical system that cooperates with each other and can not play a role alone. 

The foaming machine itself cannot produce foam out of thin air. It introduces air into the aqueous solution of the foaming agent to disperse uniformly, and realizes the contact surface of liquid and gas as large as possible, so that the surface active matter in the foaming agent forms a double electric layer on the surface of the liquid film and surrounds the air. 

To form bubbles. 

Foam concrete is the main body of foam, so foam foaming machine has become the key equipment and mainframe of foam concrete production. 

Without it, there would be no foam concrete. 

classification. 

There are many grades and models of foaming equipment, but according to the foaming principle, there are only three types of foaming equipment, such as high speed impeller type, high pressure air type, blast middle and low pressure type and so on. 

The difference of the same type is only the difference between the auxiliary equipment and the automatic control, and the structure of the foaming part is roughly the same. 

Development. 

Foaming equipment first appeared in foreign countries, its original model is the use of impeller high-speed rotation foam, also known as "foaming equipment." 

Later, with the continuous progress of technology, the technical content of foaming equipment continues to improve, new models continue to appear, forming a different technical system. 

China began to use foaming equipment as early as the 1950s, but it is not a special foaming machine, but a mortar mixer. 

The foaming agent is added directly to the mortar mixer or concrete mixer, and the foaming agent is mixed with mortar or concrete to form foam. 

Around the 1970s, there began to be a special foaming agent, that is, high-speed impeller foaming machine. 

After that, the technology has been continuously upgraded and replaced, and now it has developed into the third generation model with high pressure inflation as the main body, which can basically meet the needs of foam concrete.