How Meltblown Cloth is Made?

In our lives, there are some seemingly ordinary items with little-known origins, such as the raw materials of optical fiber from the rock; perfume from the raw materials of sperm whales, and then the core layer of medical masks melt blown fabric, do you know where it comes from? The next meltblown fabric supplier will explain the process of making masks.

The first thing I thought of was cotton. But cotton fabric, although comfortable and wearable, does not block viruses, so it is not the target we are looking for.

Is that the high-flying carbon fiber? Carbon fiber is a high-strength fiber, and although it's versatile, I still don't see what it has to do with masks. So it's not it either.

Could it be that ...... is plastic? Speaking of plastics, we are surrounded by all kinds of plastics all over our bodies, and one of them, called polypropylene, has managed to catch my attention. Here's why. Polypropylene is a white, waxy particle derived from petroleum that can be made into fibers. This fiber has a lot of voids and good filtration, making it ideal for use as a mask. Some people may have noticed that this meltblown cloth and petroleum look nothing like each other, is it pro-life? Let's verify it together next.

How oil becomes a mask?

Oil is distilled and thermally decomposed to get propylene, which is re-polymerized and becomes polypropylene.

But how does this solid polypropylene become fiber? The principle is very similar to the practice of a delicacy we have all eaten: marshmallows. Cotton candy is made by adding granulated sugar to a machine, heating it to dissolve it into syrup, and then blowing the syrup out through hot air to form fibers, and the cotton candy comes out fresh. Similarly, meltblown cloth is made by melting raw materials such as polypropylene, pulling them into ultra-fine fibers of 1-5 microns in diameter, and then gluing them into a net. This fiber is intricate and makes it difficult for viruses to pass through.

However, at this time, the filterability of meltblown cloth is only about 30%, but also after electret treatment, that is, let the meltblown cloth with an electric charge, relying on the electrostatic adsorption effect to absorb the virus, in order to make the filterability of more than 90%.

Oil after a series of complex processes, and finally turned into a mask. And the mystery of meltblown cloth's origin is solved!

Four billion years ago, viruses and life appeared almost simultaneously, and the history of the evolution of life is a history of the struggle with the environment and disease. In this long and arduous struggle, countless species have paid a terrible price. 500 million years ago, oil was formed, and 7 million years ago, man was born, and since then man has used wisdom and technology to overcome one enemy after another.