What is the purpose of a dust mask?

What is the purpose of a dust mask?

Dustproof masks are the most commonly used masks, mainly to prevent sand and dust. They are widely used. Masks used on different occasions have their specific requirements, so there are many kinds of dustproof masks.

Introduction to dust Masks：
Dust mask is an essential protective equipment for workers engaged in and in contact with dust. It is mainly used in the working environment with low concentration of harmful gases and vapors. Only adsorbents or absorbent agents should be contained in the filter box. Some of the boxes also contain a filter layer, which also protects against aerosols. Some military respirators are mainly made of activated carbon cloth, or water and oil resistant fabric for the outer layer, glass fiber filter material for the inner layer, polyurethane foam soaked in activated carbon for the bottom layer, which can provide temporary protection in case of sudden gas attack.

Classification of dust masks：
There are also many types of dust masks. But their principle is the same: are the use of composite filter materials, the general filter material is: activated carbon fiber activated carbon particles meltblow cloth non-woven electrostatic fibers, of course, there are other special filter materials, mainly used to deal with other special toxic gases or radioactive particles. The classification of dust masks is similar to that of other masks. We can also classify them according to the number of times they are used and their appearance.

1, according to the number of use: can be divided into disposable respirator and dustproof mask, multiple respirator and dustproof mask can be recycled.

2, according to the shape of the points: can be divided into, half mask type, comprehensive type, flat type, cup type, duck beak type, etc.

Use of dust masks：
1. Prevent or reduce the dust in the air into the human respiratory organs to protect the safety of life of individual protective supplies;

2. Material: dust masks are mostly made of two layers of non-woven fabric inside and outside, and a layer of filter cloth (melt-blown cloth) in the middle;

3. Filtration principle: Filter dust mainly by the middle of the filter cloth, because the meltblow cloth has its own characteristics with static electricity, can absorb small particles. Because fine dust is absorbed on the filter cloth, and the filter cloth can not be washed with static electricity, dust masks are disposable.

4. Remarks: The international requirements on the use of dustproof masks are quite strict. Dustproof masks belong to the first grade of personal protective equipment, higher than earmuffs and protective glasses. The more authoritative detection certification has the CE certification in Europe and the NIOSH certification in the United States.

It is mainly used in the working environment with low concentration of harmful gases and vapors. Only adsorbents or absorbent agents should be contained in the filter box. Some of the boxes also contain a filter layer, which also protects against aerosols. Some military respirators are mainly made of activated carbon cloth, or water and oil resistant fabric for the outer layer, glass fiber filter material for the inner layer, polyurethane foam soaked in activated carbon for the bottom layer, which can provide temporary protection in case of sudden gas attack.

Respirator refers to a mask that can prevent dust and gas and filter harmful substances.

There are many kinds of respirators, usually divided into two categories according to their structure and working principle: air filter masks and air supply masks.

Air filter masks, or simply filter masks, work by allowing harmful air to be filtered through the filter material of the mask before being inhaled. The structure of a filter mask is divided into two parts, one is the main body of the mask, the other is the filter material part, including the filter cotton for dust and chemical filter box for anti-gas.