Is the mask non-woven fabric better or meltblown fabric better?
Non-woven masks and melt-blown cloth masks have their own advantages, but in terms of protective effect, melt-blown cloth masks are better. The middle layer of the medical mask is a melt-blown non-woven fabric, which can filter bacteria and viruses in the droplets. It is an ultra-fine electrostatic fiber cloth.
The medical mask has three layers, with non-woven fabrics on both sides and meltblown cloth in the middle. If there are only two layers, this inferior product is easy to identify, and there must be no meltblown cloth. If it is three layers, how to judge whether the interlayer meltblown cloth in the medical mask is real?
1. Because the weight of a good meltblown cloth is enough, it looks white instead of transparent. There is a clear difference between the top and the non-woven fabrics on both sides. If it looks different but obviously thin, it is a meltblown cloth with a small gram weight. The thinner the meltblown cloth, the worse the effect.
2. Meltblown cloth and fire will melt, but not burn. Paper will burn when exposed to fire.
3. Generally, in order to achieve efficient isolation of germs, in addition to meltblown, the filter element material must also pass electrostatic electret, so when judging whether there is a flannel, it can be treated by testing static electricity. Prepare a piece of white paper, cut it into small pieces with scissors, and then use a medical mask to absorb the small pieces of paper, and you can see that the paper pieces are sucked onto the mask.
4. Almost all regular medical surgical masks and N95 masks will use meltblown cloth, and they will be electrostatic electrets. Otherwise, the filtering effect will not meet the standard and the effect of isolating germs will be lost. We are buying masks. When you are shopping, you must choose carefully and buy masks with trademarks, so as not to buy fakes, which will pose a threat to your own health.
The main material for medical masks with virus filtering effect is the M layer in the middle—meltblown non-woven fabric. Meltblown cloth is made of a polypropylene material called high-melt finger fiber. It is an ultra-fine electrostatic fiber cloth that can effectively use static electricity to absorb virus dust and droplets, which is also an important reason why masks can filter viruses. The meltblown layer is commonly known as the heart of the mask, mainly to isolate droplets, particulate matter, acid mist, microorganisms, etc. Due to the high price of melt-blown cloth, some fake and inferior masks may not use melt-blown cloth, and use ordinary non-woven fabric instead, which does not have the effect of filtering viruses, and may also cause harm to the body!
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