FFP2 Unvalved Respiratory masks refer to those that meet the European standard (ceen149:2001). The European standard for protective masks is divided into three levels: ffp1, FFP2 and ffp3.

Purpose

1. Personal protective articles designed to prevent or reduce dust in the air from entering human respiratory organs, so as to protect life safety;

2. Material: the anti particle mask is mostly composed of two layers of non-woven fabrics inside and outside, and a layer of filter cloth (melt blown cloth) in the middle;

3. Filtration principle: the filtration of fine dust mainly depends on the filter cloth in the middle. Because the melt blown cloth has the characteristics of static electricity, it can adsorb small particles. Since the fine dust is adsorbed on the filter element, and the filter element is electrostatic and cannot be washed with water, the self-priming filter anti particulate respirator needs to replace the filter element regularly

4. Note: the international requirements for the use of anti particulate masks are quite strict. Anti particulate masks belong to the first grade in personal protective articles, higher than ear muffs and protective glasses. The more authoritative testing certification includes CE certification in Europe and NIOSH certification in the United States, while Chinese standards are similar to NIOSH certification in the United States

5. Protection object: the protection object is divided into KP and kn. The so-called KP can protect oily and non oily particles, while kn can only protect non oily particles

Filter material

Different types of FFP2 masks use different filter materials. On the one hand, the filtration effect is related to the particle size and whether the particles contain oil. FFP2 masks are usually classified according to the filtration efficiency and whether they are suitable for filtering oily particles. Non oily particles, such as dust, water-based fog, paint fog, non oily smoke (welding smoke), microorganisms, etc. "non oily particles" filter materials are common, but they are not suitable for oily particles, such as oil mist, oil smoke, asphalt smoke, coke oven smoke, etc. while filter materials suitable for oily particles can also be used for non oily particles.

Selection method

1: the dust prevention efficiency of the mask should be high. The dust blocking efficiency of a mask is based on its effect on fine dust, especially on 5 μ The dust blocking efficiency of respirable dust below m is standard. The dust blocking principle of a general gauze mask is mechanical filtration, that is, when the dust collides with the gauze, some large particles of dust are blocked in the gauze through layers of barrier. However, fine dust is especially less than 5 μ M dust will pass through the mesh of gauze and enter the respiratory system. There are some anti particle masks on the market, and their filter materials are composed of fibers filled with permanent static electricity, those less than 5 μ In the process of passing through this filter material, the respirable dust of M will be attracted by static electricity and adsorbed on the filter material, which really plays the role of dust prevention.

2: the close degree of mask and face shape is better. When the mask is not close to the face, the dust in the air will enter the respiratory tract from the gap around the mask. Therefore, people should choose anti particulate matter masks suitable for their face shape and wear anti particulate matter masks correctly.

3: wear FFP2 Unvalved Respiratory mask comfortably, including small respiratory resistance, light weight, hygienic wearing and convenient maintenance, such as wearing an arched anti particulate mask.

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FFP2 Unvalved Respiratory Mask