Having a good filtering power is the basis
to ensure that the mask has a protective effect. The gap between the mask and
the face is not good, and the gap will occur, and the air flow resistance of
the gap is much smaller than the filter material. According to fluid mechanics,
the air flow will preferentially pass from the place where the resistance is
small, so no matter how good the filtering effect of the mask is The protective
effect of the mask(
Nurse Face Mask Company) will not be very high. Therefore, the tightness of the dust
mask is an important condition for ensuring the protective effect of the mask.
The tightness of the mask(
Nose Mask On Sales) is generally indicated by the total leakage rate,
that is, under the conditions of laboratory regular inspection, when the
subject inhales, the concentration of the mimic agent and the inhalation of all
the mask components including the filter element leaking into the mask The
percentage ratio of the concentration of the imitating agent in the air, the
lower the total leakage rate, the higher the adhesion. Therefore, the better
the adhesion of the mask, the better the ventilation function of the mask, so
that the air can pass through the mask to meet the breathing needs of people.
Conversely, the worse the adhesion, the less necessary the breathability of the
mask. The mask with good ventilation function requires the mask to have a good
adhesion to a certain extent, so as to ensure that the mask has a high
protective effect.
The most important quality of masks is the
protection against harmful substances. The quality of the mask is mainly
reflected in the filtering power of harmful substances, the degree of adhesion
with the face and the wearing comfort. It can be inferred from the correlation
between the permeability of the mask(Earloop Face Mask Wholesale) and the filtering power and adhesion that
its permeability will affect the protective performance of the mask to a
certain extent, that is, its quality. The wearing comfort of the mask is mainly
expressed in that the breathing resistance is small, the weight is light, it does
not irritate the skin, and the wearing and cleaning aspects depend on the
breathability of the fabric material or the breathability of the mask. If the
ventilation function is good, the comfort of the mask is high, and the filter
power and the adhesion are required to be high to ensure its quality. On the
contrary, when the ventilation function is poor, in order to ensure the
protective effect of the mask, its comfort will be reduced, that is, the
quality is poor. Therefore, the breathability of the mask directly affects the
comfort of the mask, indirectly affects the filtering power and adhesion, and
then affects the quality of the mask.
