Protection-type gauze mask

Abstract

The invention relates to a protection-type gauze mask. The protection-type gauze mask comprises a gauze mask body, ear bands and a breather valve arranged on the gauze mask body, and the gauze mask body comprises a face layer, a bottom layer and a filter layer sandwiched between the face layer and the bottom layer. The protection-type gauze mask has the advantages that when a wearer uses the protection-type gauze mask, the breathing resistance is small, breathing is smoother, and the comfort degree of the wearer is improved.

Description

technical field [0001] The invention relates to the technical field of masks, in particular to a protective mask. Background technique [0002] Breathing valve masks are designed for people's health, and are used to filter visible or invisible substances that are harmful to the human body in the air, so as not to have a bad influence on the human body. [0003] In hot and humid working environments with poor ventilation or heavy labor, using a mask with a breathing valve can help the wearer to breathe more comfortably. The working principle of the breathing valve is that the positive pressure of the exhaust gas blows open the filter valve when exhaling, so as to quickly remove the exhaust gas in the body and reduce the stuffy feeling when using the mask, and the negative pressure when inhaling will automatically close the valve to avoid Inhalation of pollutants from the external environment. [0004] The existing authorized notification number that can be referred to is th...

AI Technical Summary

Problems solved by technology

[0005] There is the following defect in the above-mentioned prior art scheme: its diaphragm has only a complete circular sheet, so when the wearer is exhaling, the gas can only be scattered outwards through the surroundings of the diaphragm, which will make the wearer When exhaling, the air flow is relatively concentrated, and the resistance of the gas to diffuse from the mask to the outside is relatively large. The exhaled gas cannot be quickly and effectively discharged from the mask, so that moisture is generated inside the mask, and the wearer will feel oppressed, thereby reducing the wearer's wearing comfort

[0007] Its disadvantages are: but the key problem in the limited production process of electret melt-blown filter materials used in mask products in the industry, that is, with the ejection and superposition of melt-blown fibers, the inter-fiber structure that should theoretically be in a fluffy state will occur. Collapse, the space between fibers is reduced, so that the dust holding capacity does not increase but decreases, which makes it difficult to achieve low breathing resistance and high dust holding capacity by increasing the thickness (gram weight) of the electret meltblown filter material

However, the performance of good-quality needle-punched electrostatic cotton is often only 60-75% of the electret melt-blown filter material of the same gram weight. If you want to achieve higher dust holding and filtering effects, the overall thickness of the mask will increase significantly, which will sacrifice Comfort increases breathing resistance, which increases the cost and affects the appearance and texture of mask products

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