The reason why the mask can not be made with a mask machine is because the core material of the gap mask: melt-blown cloth.
So what is meltblown cloth? Cut out a used medical mask, you will find that the mask has three layers, (inner layer) moisture absorption layer, (middle layer) core filter layer, and (outer layer) water blocking layer. According to national production regulations, medical masks contain at least 3 layers of non-woven fabrics (N95 grade masks, structurally optimized: (middle layer) core filter layer has more layers and thicker thickness). Layer S: Polypropylene special resin-nonwoven fabric factory-mask factory M layer: High melt index polypropylene special resin-modified plastic factory-meltblown nonwoven fabric factory-mask factory.
Meltblown cloth, commonly known as the "heart" of the mask, is the filter layer in the middle of the mask, which can filter bacteria and prevent the spread of germs. Meltblown cloth is a film made of polypropylene with a high melt index. It is a film composed of many crisscross fibers stacked in random directions. The fiber diameter ranges from 0.5 to 10 microns, and the fiber diameter is about 30 cents of the hair. one.
With such a large gap in the meltblown cloth, how do you filter viruses in the environment? Although the size of the new coronavirus is very small, about 100 nanometers (0.1 micrometers), the virus cannot exist independently. The main transmission routes are secretions and droplets when sneezing. The size of the droplets is about 5 micrometers. One, second, the meltblown cloth is essentially a fiber filter. When the droplets containing the virus are close to the meltblown cloth, they will also be electrostatically adsorbed on the surface and cannot penetrate.
Although the raw materials of the S layer and M layer of the mask are polypropylene-specific resins, the special materials for melt-blown fabrics differ greatly from other non-woven fabrics in the production process and performance.
So where did the meltblown cloth come from? The special material for meltblown cloth is polypropylene with high melt index. The higher the melt index of polypropylene, the finer the melt-blown fibers, and the better the filterability of the melt-blown cloth.
The above is the knowledge of melt blown cloth for everyone. If you need to buy melt blown cloth, you can also contact us. Xinxiang is Yulong Textile Co., Ltd. looking forward to your mail.