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In the production of masks, melt-blown cloth has become the "core weapon" for making masks with excellent performance.The quality of the mask depends on the melt-blown cloth.The common disposable plane mask has a three-layer structure, and the outermost layer and the innermost layer are non-woven fabrics, and the middle layer is the melt-blown fabric for filtering.

（figure 1）

In terms of appearance, a good melt-blown fabric looks white or not transparent due to its sufficient weight, and it has a clear difference from the non-woven fabric on both sides.

（figure 2）

How can we test the quality of a mask when we buy it? There are the following methods:

1.Paper will burn when it encounters fire, and melt-blown cloth will melt when it is involved, and will not burn directly;

2.Masks with melt-blown cloth can have an electrostatic adsorption effect, and qualified masks can absorb a large amount of paper dust; (shred the paper a little before testing);

3. Pour water into the mask, the qualified mask will not leak.

Have you learned it?