How does the foaming bottle of the cleansing foam press the liquid into a foam?

Fri Jun 10 2022 Tony

en it comes to foaming, we should be more familiar with the bath balls used in the bath and the sponges used in the dishes. In fact, the principle of sparkling bottles is very similar to them. Let us first clarify the nature of bubbling. Foaming is actually the mixing of gas and liquid, and a single bubble is the smallest form of mixing.

We must have blown bubbles when we were kids, or have seen someone blow bubbles. A tool with a closed circle is often used when blowing bubbles. The function of this circle is to spread the liquid into a film on the space in it, so that people can blow air into the film to stretch it. Relying on the tension of the liquid surface, the stretched film is automatically tightened and closed to form bubbles.

In life, it is not difficult to find that there are a lot of mesh structures on bath flowers, and sponges also have a similar porous structure. These structures are like countless circles blowing bubbles, efficiently mixing the liquid and air within them and forming fine foam. Finally, let's go back to the sparkling bottle, which is also the secret to the fast mixing of air and liquid, the mesh structure. If you open the hand pump head of the foam bottle, you will see that there is a screen on the only path for the liquid.

The real bubbler - there is a dense screen. Different from the ordinary pump head, the foam pump head has an enlarged air chamber at the throat. When released after the first press, a low pressure is created in the upper part of the pump head, thereby pumping the liquid to the upper part of the pump head, while the air enters the air chamber. On the second press, the air chamber is pressurized, pumping the liquid and air into the screen located on the pipe at the same time, so that the bubbles are blown. The smaller the screen, the smaller the bubbles blown and the finer the bubbles.

The significance of the foaming bottle is that it can make shampoo, shower milk, and facial cleanser come out directly as foam, so that you do not need to use your own hands or use a foaming net, and it is cleaner and more convenient to foam. Reduce the irritation caused by the direct contact of the product on the face, and activate the cleaning effect at the same time, so that it is truly gentle and clean.

How does the foaming bottle of the cleansing foam press the liquid into a foam?
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