Many fake and inferior mask manufacturers took advantage of the loopholes and used extremely inferior, cheap, and substandard raw materials for profit, and they could make nearly 10 times the profit once they changed hands. Some directly omit the most important meltblown cloth filter layer in the middle, and replace it with ordinary non-woven fabric, which does not play a role in filtering viruses, and may also cause harm to the body. So how to judge whether the interlayer meltblown cloth in medical masks is real?
It is easy to identify the two-tier inferior products. A useful medical mask must have three layers, with spunbonded non-woven fabric on both sides, and a heavy meltblown fabric in the middle. A good meltblown fabric looks white rather than transparent due to its weight, and it looks obviously different from the spunbond non-woven fabric on both sides. To put it bluntly, it looks like paper. If it looks different but is obviously thin, it is a meltblown cloth with a small weight. The thinner the meltblown cloth, the worse the effect.
Here is a simple way to identify meltblown non-woven fabrics:
First, as the name suggests, the melt blown layer will melt when encountering fire, but will not burn. Paper will burn in fire.
Second, the melt-blown layer has static electricity. If you tear the melt-blown layer into strips, you will obviously feel the electrostatic adsorption effect, and you can also adsorb the strips of the melt-blown layer on the stainless steel.
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