Mask non-woven selection skills and types

The non-woven fabric of the mask is carried out according to the rules of the instruction manual. There are various kinds of disposable dust masks, and the selection needs to be based on different operating needs and working conditions. The first choice should be based on the concentration and toxicity of the dust.

The non-woven fabric of the mask is used as a half mask, and all dust masks are suitable for environments where the concentration of harmful substances does not exceed 10 times the working contact limit, otherwise a respirator with a full or higher protection level should be used. If the particulate matter is classified as highly toxic, carcinogen and radioactive, a filter material with a higher filtration efficiency should be selected.

If the particulate matter is oily, a suitable filter material needs to be selected. If the particulate matter is needle-like fibers, such as slag wool, asbestos, glass fiber, etc., since the dust mask cannot be washed with water, the mask with fine fibers may cause facial irritation in the face sealing part, and it is not suitable for use.

The non-woven fabric for masks is suitable for high temperature and high humidity environments. It is suitable to choose a mask with an exhalation valve. Choosing a mask that can remove ozone for welding can provide additional protection, but if the ozone concentration is higher than 10 times The work hygiene standard can replace the mask, equipped with dust and poison combined filter elements. For environments where there is no particulate matter, but only some odors, choosing a dust mask with an activated carbon layer is much lighter than wearing a gas mask.

Whether the mask non-woven dust mask has a protective effect, in addition to the selection of protective functions, another important selection factor is suitability. The certification testing of dust masks does not ensure that the masks are suitable for each specific user. If there is a leak, airborne pollutants will enter the breathing zone from the leak.

The way to choose a suitable mask is to use a suitability test, which uses human taste and uses special tools to produce bitter or sweet particles.

One of the non-woven masks for masks, the strap-type non-woven masks are flexible, and the degree of wearing tightness varies from person to person. The material is made of pure cotton degreased gauze or knitted fabric with non-woven fabric in the center, which has good filtering effect but poor air permeability. The new non-woven mask has a non-woven surface layer and a filter layer in the center. Generally, meltblown cloth is used as the filter layer, which has strong air permeability, good filtering effect, and sterilization effect.

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