The mask is made to fit closely to the face by covering the mouth, nose and chin, forcing the air to filter out harmful substances as it passes through the mask, achieving a protective effect. The protection principle of the mask is based on the filtering effect of the mask on harmful substances. The higher the filtering efficiency of the mask on harmful substances, the better the purification of the air, the healthier the air the human body inhales, and the better the protection effect of the mask.

In addition to achieving a certain level of protection, the comfort of the mask is also an important factor to consider. The breathability of the mask is one of the main factors affecting wearing comfort. If the breathability is not good, consumers will feel difficulty in breathing when wearing the mask, and improper use may cause serious consequences.

The breathability of a mask is related to those factors?

1, the breathability of the mask is related to the structure of the mask

Mask material structure. Non-woven fabrics generally present a single *** network-like structure, breathable performance *** good, use *** common. For textile fabrics, the gap between the yarns is closely related to the breathability of the fabric, the larger the gap, the better its breathability; for example, the choice of gauze masks with larger gaps is better than the tightly structured poplin and twill fabric breathability. In general, knitted masks have better breathability than woven masks.

The number of layers of mask material used. In general, the more layers the mask has, the worse the breathability. If you add one or more layers of non-woven fabric with particle filtration effect between two layers of spunbond non-woven fabric or two layers of knitted woven fabric, the breathability will drop significantly.

2, mask breathability and wear use related

When the mask is not well fitted to the face, there will be gaps, and the airflow resistance of the gaps is much smaller than the filter material, and the airflow will be prioritised from the place where the air resistance is small, so the wearer feels that the breathability is good, but the protective effect of the mask is greatly reduced at this time. Therefore, when wearing a mask, or to choose *** their face size mask, *** the use of nasal clips, mask with the role of adjustment to ensure that the mask and the face of a close fit, so wear to achieve a good protective effect.

3、The breathability of the mask is related to the filtration efficiency

The breathability of the mask has a certain correlation with the filtration efficiency of the mask. When the breathability of the mask is poor, the mask will block the outside material from entering the mask, and the filtration efficiency will increase, but the comfort of wearing it will be reduced.

In short, the breathability of a mask is related to the structural design of the mask, but also to the use of the wearer and the shape of the individual's face. It is therefore important to choose a mask that is suitable for the shape of the face and offers both good protection and breathability***.

What indicators are important in the mask breathability test?

At present, the breathability test indicators for masks are: air permeability, ventilation resistance, airflow resistance, pressure difference and breathing resistance. Different standards have different requirements, some are the same test method, but the project name is different, the differences are mainly.

1、 Different testing principles.

2、 Different test index requirements.

3、 Different test areas.

4、 Different test media.

5. Different test gas flow rates.

Click on the message for more information about the Mask breathability test.