How To Distinguish The Front And Back Of Disposable Masks?

Why should we correctly distinguish the front and back of a mask?

Many people may think that the front and back are the same, as long as they wear Yanshi. This is not the case. The front and back functions of masks are different. Many masks use a three-layer design. The filter layer for filtering germs is located in the middle, the outer layer is a waterproof layer, and the inside is a water-absorbing layer. If you wear it backwards, the water-absorbing layer will become a waterproof layer, and the waterproof layer will become a water-absorbing layer. This will cause the saliva to adhere to the surface of the mask, and the more it accumulates, it may wet the mask and make the mask lose its filtering function.

How to distinguish the front and back of a mask

How to distinguish the front and back of the mask?

First, distinguish the upper and lower parts, "the one with the metal strip is the upper part", because the metal strip can be used to adjust the fit to the nose.

After the above is confirmed, let's judge which side is outside and which side is inside.

I have listed the characteristics of several common disposable masks. You can judge by checking the number.

Judge by color

Generally, what we see is a blue medical surgical mask. The blue side is the outside, and the light (white) side is the inside (to the face). There are also pink and black ones, which can also be judged according to this principle.

Judge by printing

If there is a logo or brand name printed on the mask, it is easy to judge. The embossing of the logo or brand name is usually printed on the outside, and then you can know which side is outside by seeing whether the words are correct.

Judging by the direction of the folds

What if the mask you bought is pure white without any fonts? It's okay, we have another ultimate method of judgment: look at the direction of the folds!

There are two kinds of folds of the mask:

Three folds

The direction of the folds down is the outside:

Four folds

There is another type of mask with four folds, which is better to judge. You naturally open it, the middle one is convex, then this side is the outside. In fact, it’s easy to understand when you think about it. This allows our mouth and nose to have a certain amount of space to breathe.

After spreading, the direction of the upper two folds is upward, and the direction of the lower two folds is downward.

Judge by fabric material

Didn’t I say at the beginning of the article that the design of the front and back of the mask is different, and the inside is a water-absorbing layer, so the materials on both sides are also different. We can use this to judge the front and back of the mask.

Those with obvious grids look tough, this side is the outer waterproof surface

There is a soft fabric feeling inside.

to sum up

First of all, it can be judged by color: the dark color is the outside and the light color is the inside; second, it can be judged by the printing, which is generally on the outside and the words are positive.

If you buy a pure white mask without printing, it can be judged by the direction of the folds. If there are three folds, then the direction of the folds is downwards on the outside; if there are four folds, then the middle piece is convex outward after spreading, which is the outside. In addition, after spreading, the direction of the top two folds is upward, and the direction of the bottom two folds is downward.

Finally, we can also distinguish the front and back by the material. There are obvious lattices, which look a little tough, and are the waterproof surface on the outside; the soft fabric feels the absorbent surface on the inside.