Cut a used medical mask (new one is fine, but don't waste it), you will find that the mask has three layers. Because according to national production regulations, medical masks contain at least 3 layers of non-woven fabrics.

In fact, non-woven fabrics are non-woven fabrics composed of oriented or random fibers. Every family will have this material, and the most common one is the eco-friendly cloth bag that the elderly always keep in their homes.

So are these 3 layers the same? Of course not.

To make masks, all raw materials are polypropylene (PP), and medical masks are generally referred to as SMS structure. Among them, the spunbond layer is a single layer, and the meltblown layer is divided into a single layer or multiple layers according to filtration requirements.

"Meltblown cloth" is commonly known as the "heart" of masks. It is the filter layer in the middle of the mask. It has good filtering, shielding, heat insulation and oil absorption properties, and is an important raw material for the production of masks.

The two spunbond layers inside and outside can protect sweat and water, and the middle meltblown layer can filter out bacteria, thereby preventing the spread of germs and reducing the occurrence of epidemic infections. Therefore, the manufacturing process of the meltblown layer is different from that of the spunbond layer.

Let's make a comparison. The fiber diameter of the S layer of the spunbond layer of the mask is about 1/3 of the hair, and the fiber diameter of the meltblown layer M is close to 1/30 of the hair. Only thinner fibers can ensure better antibacterial filtration.

In order to meet national requirements, polypropylene high-melt index non-woven fabrics have become the best choice for masks. It can also be used in disposable surgical gowns, sheets, drapes, liquid absorbent pads and other medical supplies.

It is reported that 1 ton of high melting index fiber material can produce about 250,000 germ protection masks. With the supply of raw materials, the process of making masks is actually not complicated.

First, the three layers of non-woven fabric materials are stacked together through the production machine.

Curl the edges and stitch the nose clip in.

Use a machine to make a large piece of non-woven fabric along the slope, gradually narrowing from left to right, to create a "folded structure".

Then there is a stage of pressing to flatten the surface of the mask.

Most of the individual cutting and seaming of masks are handled automatically and without manual labor.

Then use non-woven fabric to fill the mask.

So it is necessary to cut the fill edges again.

Then fix the ear ropes by hot pressing, and you are basically done.

Of course, there will be "manual quality inspection" afterwards, so I won't go into details here.

Find material for mask at https://www.fengshangindustrial.com