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Professional Custom Non Woven Fabric Manufacturer And Supplier Since 2001


What are the requirements for non-woven fabrics to make masks?

During the Coronavirus disease (COVID-19) pandemic, we are increasingly aware of the importance of effectively isolating and separating solid and liquid aerosol particles that are harmful to health during breathing.

The surface structure of the mask non-woven fabric is composed of three or more layers of materials. The inner layer is polyester needle-punched cloth. Non-woven fabric plus electrostatic adsorption cotton, the outer layer is polypropylene spunbond cloth, and some will add a layer of activated carbon to effectively absorb harmful particles.

In the three-layer structure, the needle-punched cloth supports the shape of the mask and is called the support layer, while the melt-blown cloth is the key functional layer, because the technical parameters of the mask are all from melt-blown Layer properties such as overrate efficiency, flow, transmittance, and resistance.

In the market, the certification standards mainly come from two series of European standard and American standard. No matter which standard, the particulate filter material protection is divided into two categories: solid particle protection and liquid particle protection. American Standard certified masks can be divided into N series, R series and P series.

Wherein N stands for non-oily suspended particulates that can be used for protection without time limit. R stands for protection against non-oily suspended particulates and sweat oily suspended particulates for a limited time of eight hours. P stands for protection against non-oily particles and perspiration oily suspended particles for no time limit. European standard certified masks are based on aerosol tests and are divided into three levels: FFP1, FFP2 and FFP3. It should be noted here that most European standard masks are double-proof masks that can be used together to protect non-oily suspended particles and sweat oily suspended particles.

In the N grade series of American Standard, the single weight of the meltblown layer of the N95 grade mask is 40-50 g/m2, and the N99 is 70-80 g/m2 or more. In the European standard P grade series, the single weight of the meltblown layer of the P1 grade mask is 30-35 g/m2, the single weight of the meltblown layer of the P2 grade mask is 40 to 50 g/m2, and the meltblown layer of the P3 grade mask is meltblown. The single layer weight is 80 grams per square meter or more.

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