Filtering device with electrostatic spinning nanofiber cloth and mask

Abstract

The invention provides a filtering device with electrostatic spinning nanofiber cloth and a mask. The filtering device comprises the electrostatic spinning nanofiber cloth and melt-blown non-woven fabric. The melt-blown non-woven fabric is arranged on at least one side of the electrostatic spinning nanofiber cloth to form more than two layers of filtering structures with the electrostatic spinningnanofiber cloth; the filtering efficiency percentage of the melt-blown non-woven fabric to particles with the particle size of 0.02-10 mu m is M; the filtering efficiency percentage of the electrostatic spinning nanofiber cloth to particles with the particle size of 0.02-10 mu m is N; M / N is equal to 1.05-1.6. By setting the filtering efficiency value, a filtering combination of the electrostaticspinning nanofiber cloth and the melt-blown non-woven fabric is formed, a graded filtering structure with different filtering effects on substances such as solid particles, bacteria and viruses withdifferent sizes is formed, and meanwhile, the used gram weight is low and the porosity is high so that airflow cannot be blocked when high-speed airflow passes through the graded filtering structure,and thus the resistance pressure drop cannot be increased.

Description

technical field [0001] The invention belongs to the field of respiratory protection, and in particular relates to a filter device and a mask with electrostatic spinning nanofiber cloth. Background technique [0002] As people's awareness of protection increases, masks are used more and more frequently. However, ordinary cotton masks can only block larger particles, and its main function is to keep warm. Tiny particles in the air can still penetrate the cotton mask and enter the human body. [0003] Although the melt-blown layer in the melt-blown non-woven fabric has a better filtering effect on particles with larger particle sizes, some particles with smaller particle sizes can still penetrate the melt-blown non-woven fabric and enter the human body, making the melt-blown non-woven fabric The filtering effect of the woven mask is not satisfactory. [0004] In the prior art, high-performance electrospun nanofiber filter materials need to have the characteristics of high eff...

AI Technical Summary

Problems solved by technology

However, ordinary cotton masks can only block larger particles, and its main function is to keep warm. Tiny particles in the air can still penetrate the cotton mask and enter the human body.

[0003] Although the melt-blown layer in the melt-blown non-woven fabric has a better filtering effect on particles with larger particle sizes, some particles with smaller particle sizes can still penetrate the melt-blown non-woven fabric and enter the human body, making the melt-blown non-woven fabric The filtering effect of woven masks is not satisfactory

[0004] In the prior art, high-performance electrospun nanofiber filter materials need to have the characteristics of high efficiency and low resistance. Conventional high-performance electrospun nanofiber filter materials rely on the structural characteristics of the material itself (aperture size, packing density, etc.) Filtration, usually with high efficiency and high pressure resistance, resulting in poor ventilation

Therefore, relying solely on the structural characteristics of high-performance electrospun nanofibers, it is difficult to achieve an effective balance between filtration efficiency and piezoresistance, and cannot meet the use standards of high-efficiency filtration and low resistance.

[0005] In summary, the products in the prior art cannot take into account the filtering effect and the airflow resistance, so it is necessary to improve the existing products

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