Methods to enhance the protection of masks: improve fit and filterability.

Improving the fit helps prevent air (which may contain virus-containing respiratory droplets) from flowing freely on the edge of the mask and forcing the air to escape out of the mask. Improve the filterability, so that more respiratory droplets containing viruses are captured by the mask.

How to improve the fit of the mask?

Ensuring that the mask fits the face is very important to prevent infection and the spread of the epidemic. A common problem with some masks is that sometimes there is a gap between the mask and the wearer's face. When there are gaps, the air with virus-containing respiratory droplets will seep in or out from the edge (top or side) of the mask. In order to prevent air leakage, the mask should be close to the sides of the face without gaps.

How to improve the fit of the mask?

1. Nose bridge line: Use a cloth mask or medical-surgical mask with a nose bridge line (a metal strip along the top of the mask) to prevent air leakage from the top of the mask. The bridge of the nose can also help prevent fogging of the glasses. To get a good fit, make sure that the curved nose bridge is placed on the nose to fit the face.

2. Mask adapters and brackets: These devices can be used for medical surgical masks or cloth masks to help reduce air leakage at the edges of the masks, thereby improving the fit.

3. Fold the excess material and stuff it inside the edge. Knotting and folding: This technique can be used to improve the fit of medical surgical masks. Knot the ear hook of the mask where it meets the edge of the mask, and then fold the unnecessary material and stuff it under the edge.

How to check the fit of the mask?

Wrap your hands around the outer edge of the mask and check for gaps. Make sure there is no air coming out from near your eyes or from the side of the mask.

If the mask fits well, you will feel warm air passing through the front of the mask, and you can see the mask material undulate with each breath.

While buying disposable protective masks, we must also learn to use them correctly and effectively, so as to ensure our health.

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