PM2.5C type mouth mask efficient in filtering

Abstract

The invention relates to a PM2.5C type mouth mask efficient in filtering. The mouth mask comprises a mouth mask body, and the two sides of the mouth mask body extend out to form a pair of portions hung on ears. The mouth mask body comprises a left mouth and nose piece portion, a right mouth and nose piece portion, a left nose bridge piece portion, a right nose bridge piece portion, a left jaw piece portion and a right jaw piece portion, wherein the edge of the left nose bridge piece portion and the edge of the right nose bridge piece portion are combined, the mouth mask body is of a three-layer structure to form a laminated shape, and the weight of a middle layer made of ultra-fine electret melt-blown fiber non-woven cloth per unit area is 20-60g / m2. The PM2.5C type mouth mask efficient in filtering integrates air permeability, weight, wearing comfort and PM2.5 filtering efficiency of a mouth mask at a high level. The PM2.5 filtering efficiency of the mouth mask can reach more than 99% at most, the mouth mask is low in weight, and air permeability and comfort of the mouth mask are guaranteed at the same time. Water mist is prevented from being generated on lenses, warm air is prevented from accumulating on the inner side of the mouth mask, and bacteria are prevented from growing.

Description

technical field [0001] The invention relates to a high-efficiency filter PM 2.5 A C-type mask belongs to the technical field of health products. Background technique [0002] PM 2.5 Refers to particulate matter in the atmosphere with an aerodynamic equivalent diameter less than or equal to 2.5 μm, also known as particulate matter that can enter the lungs. high concentration of PM 2.5 Pollution affects ambient air quality and human health. With the gradual implementation of new air quality evaluation standards across the country, and the emergence of large-scale persistent haze weather in many provinces and cities in my country in recent years, the "PM 2.5 ’ came into the spotlight. Thanks to PM 2.5 Particles have a great impact on ambient air quality and human health. People have shown great enthusiasm for masks. However, there are not many masks on the market that specifically protect against such fine particles. Existing masks on the market are absolutely Most of the...

AI Technical Summary

Problems solved by technology

The structure of the 4-layer filter element formed in this way is too complicated, and the air permeability will be greatly reduced, which will lead to the formation of water mist on the inner surface of the mask, which will breed bacteria after a long time, and the production process will be more cumbersome, resulting in a greatly increased manufacturing cost. The filter element structure and the 3-layer filter element structure do not significantly improve the filtration efficiency of PM2.5

[0004] Although the existing 3M masks and "Green Shield" masks can filter PM 2.5 However, when the existing 3M masks and "Green Shield" masks are worn, there will be gaps in the two wings of the bridge of the nose, and the outside air will directly enter the respiratory tract through the space of the two wings of the bridge of the nose without being filtered by the mask body, thus weakening the 3M mask. Filter PM with "Green Shield" masks 2.5 The role of, additionally, the existing PM 2.5 When the mask is worn, the mask body directly covers the mouth and nose. There is no circulation space between the mask body and the mouth and nose. The gas generated by breathing flows in the space that cannot be formed inside the mouth, nose and the covering part. The warm hot air The deposition on the inside of the mask leads to the growth of bacteria, and the deposition of warm and hot air also leads to PM 2.5 The filtering effect of the mask is reduced. After a long time, the warm air escapes from the top of the mask, causing the glasses to produce water mist and affecting the user's sight.

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