Multi-layer filtering mask

Abstract

The invention discloses a multi-layer filtering mask. The multi-layer filtering mask comprises a supporting body, an elastic fixing belt, a filtering layer, a soft sponge and a dustproof layer; the supporting body is a plastic housing; uniformly-arranged through holes are arranged in the supporting body, corresponding to a mouth part and a nose part; the elastic fixing belt is connected to two sides of the supporting body; the filtering layer covers the through hole from the inner side and is adhered to the inner surface of the supporting body; the soft sponge is adhered to the outer edge of the supporting body, in contact with the face; the dustproof cover covers the filtering layer, and four edges of the dustproof layer are clamped between the soft sponge and the supporting body. The multi-layer filtering mask has the advantages that the filtering layer and the movably-connected dustproof layer form a filtering system for filtering air for breathing by a plurality of layers, so as to ensure the quality of the air for breathing, and the invasion of dust, bacteria and the like to a human body is also prevented; the multi-layer filtering mask is firm, durable, convenient to clean, and smooth to breath, and is particularly suitable for the place with high dust.

Description

technical field [0001] The invention relates to a mask, in particular to a multi-layer filter mask. Background technique [0002] Masks can effectively prevent the spread of respiratory diseases and prevent the invasion of human body by external dust and various bacteria. In recent years, with the continuous emergence of various large-scale infectious diseases and the continuous spread of the world, people have higher and higher requirements for masks. [0003] Common respirators on the market now, such as 301A or B respirators, are all made of exhalation valves and inhalation pieces. Put the suction sheet against the surface of the corresponding plastic chassis to achieve a sealing effect, but the time difference between exhalation and inhalation makes the suction sheet and the plastic chassis surface instantly separated, causing external dust or bacteria to enter, and the protection effect is not good; 2 1. The surface of the inhalation piece is uneven, and dust is easy ...

AI Technical Summary

Problems solved by technology

[0003] Common masks on the market today, such as 301A or B masks, are made of exhalation valves and inhalation pieces. Common disadvantages include: 1 1. The exhalation valve adopts the flow pressure of air when exhaling and inhaling, and presses the inhaling sheet against the corresponding plastic chassis surface to achieve a sealing effect, but the time difference between exhaling and inhaling makes the inhaling sheet and the plastic chassis surface

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