Buying Face Masks

Mar 18, 2020

Buying face masks

I. Dust blocking efficiency

The dust blocking efficiency of a face mask is based on its blocking efficiency against fine dust, especially respiratory dust below 2.5 microns. Because this particle size can directly enter the alveoli, it has a great impact on human health. Dust mask consists of filter material activated carbon fiber felt or non-woven fabric. Respirable dust smaller than 2.5 microns is passed through this filter material.

Degree of closeness

The anti-side leakage design of the mask is to prevent air from being sucked in through the gap between the face mask and the human face without filtering, considering technical requirements. Air is like water flow, where the resistance is small, it flows first. When the shape of the mask is not close to the human face, dangerous substances in the air will leak from the close to the human's respiratory tract. Well, even if you choose a filter with the best mask. Nor can it protect your health. Many foreign regulations and standards stipulate that workers should regularly perform mask tightness tests. The purpose is to ensure that workers choose appropriate masks and wear them in the correct steps.

Third, wearing comfort

Only then will workers be willing to wear them in the workplace and increase their productivity. At present, maintenance-free masks in foreign countries do not need to be cleaned or replaced, and are discarded when the dust blocking is saturated or the mask is damaged. This not only guarantees the hygiene of the mask, but also saves the time and effort of workers to maintain the mask. In addition, many face masks are arch-shaped, which can not only ensure a good fit with the shape of the face, but also retain a certain amount of space at the mouth and nose, which is comfortable to wear.