Filtering device with electrostatic spinning nanofiber cloth in bimodal distribution and mask

An electrospinning and nanofiber technology is applied in the field of filter devices and masks of electrospinning nanofiber cloth, which can solve the problems of inability to take into account the filtering effect and airflow resistance, and achieve the best barrier, smooth breathing, and improved bulkiness. , the effect of increasing the pore size

Pending Publication Date: 2021-04-27
GUANGDONG KINGFA TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the products of the prior art cannot take into account the filtering effect and the airflow resistance, and it is necessary to improve the existing products

Method used

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  • Filtering device with electrostatic spinning nanofiber cloth in bimodal distribution and mask
  • Filtering device with electrostatic spinning nanofiber cloth in bimodal distribution and mask
  • Filtering device with electrostatic spinning nanofiber cloth in bimodal distribution and mask

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] See attached Figure 1-5 , is a filter device 2 with bimodal distribution of electrospinning nanofiber cloth 22, including electrospinning nanofiber cloth 22 and melt blown non-woven fabric 21; described electrospinning nanofiber cloth 22 has the following characteristics: figure 1 The bimodal distribution.

[0044] Such as figure 2 Shown is a preferred embodiment, the melt-blown non-woven fabric 21 is disposed on one side of the electrospun nanofiber cloth 22 to support the electrospun nanofiber cloth 22 . When the melt-blown non-woven fabric 21 is one layer, the melt-blown non-woven fabric 21 and the electrospun nanofiber cloth 22 form a two-layer filter structure. A multilayer filter structure is formed with the electrospun nanofiber cloth 22 . In another embodiment, the meltblown nonwoven fabric 21 can also be disposed on both sides of the electrospun nanofiber fabric 22 at the same time.

[0045] Such as image 3 As shown, the surface of the electrospun nanof...

Embodiment approach 1

[0049] The filter device 2 includes an electrospun nanofiber cloth 22 and a melt-blown non-woven fabric 21, and the diameter distribution of each fiber in the electrospun nanofiber cloth 22 has a statistically bimodal distribution form. The melt-blown non-woven fabric 21 is arranged on one side of the electrospun nanofiber cloth 22 to form a two-layer filter structure with the electrospun nanofiber cloth 22 . The bimodal distribution form includes: a first wave peak, the diameter range of the first wave peak is: 0.05-0.3 μm; a second wave peak, the diameter range of the second wave peak is: 3-6 μm. The peak value of the first peak is: 0.15 μm, and the peak value of the second peak is: 4.5 μm. The proportion of fibers whose diameter is within the range of the first peak is 80%, and the proportion of fibers whose diameter is within the range of the second peak is 20%. In the melt blown nonwoven fabric 21, the average diameter of each fiber was 7 micrometers.

comparative approach 1

[0051] Filtration device 2 comprises electrospinning nanofiber cloth 22 and melt-blown nonwoven fabric 21, and the diameter distribution of each fiber in electrospinning nanofiber cloth 22 is statistically randomly distributed, and each fiber in electrospinning nanofiber cloth 22 The diameter range is: 0.05 ~ 6μm. The melt-blown non-woven fabric 21 is arranged on one side of the electrospun nanofiber cloth 22 to form a two-layer filter structure with the electrospun nanofiber cloth 22. In the melt-blown non-woven fabric 21, the average diameter of each fiber is 7 μm.

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Abstract

The purpose of the present invention is to provide a filtering device with electrostatic spinning nanofiber cloth in bimodal distribution and and a mask. The filtering device comprises melt-blown nonwoven fabric and the electrostatic spinning nanofiber cloth in bimodal distribution. The electrostatic spinning nanofiber cloth comprises 88%-92% of a first wave crest and 8%-12% of a second wave crest, wherein fiber diameter of the second wave crest is smaller than that of the melt-blown non-woven fabric. The double peaks of the fiber diameter are distributed within a certain range, wherein the fiber diameter of the first wave crest accounts for 90% of the total area, the first wave crest forms the main body of the whole electrostatic spinning nanofiber cloth, and a physical barrier effect is achieved; the fiber diameter of the second wave crest accounts for 10% of the total area, the pore size of the electrostatic spinning nanofiber cloth can be increased, and the overall bulkiness of the electrostatic spinning nanofiber cloth is improved, so that respiratory resistance is reduced.

Description

technical field [0001] The invention belongs to the field of respiratory protection, and in particular relates to a filter device and a mask of electrostatic spinning nanofiber cloth with bimodal distribution. Background technique [0002] In today's mask production, it is more common to use melt-blown non-woven fabrics for filtration. However, the filtering effect of meltblown non-woven fabrics on some small particulate matter is average. [0003] High-performance electrospun nanofiber filter materials need to have the characteristics of high efficiency and low resistance, but conventional high-performance electrospun nanofiber filter materials rely on the structural characteristics of the material itself (pore size, packing density, etc.) to filter particles. While having high efficiency, it also brings high pressure resistance, resulting in poor ventilation capacity. Therefore, relying solely on the structural characteristics of high-performance electrospun nanofibers, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A41D13/11A41D31/02A41D31/04B01D39/16B01D39/14
CPCA41D13/1115A41D31/02A41D31/04B01D39/16B01D39/14A41D2500/30
Inventor 李成朱秀梅周敏鲁明丁超陈平绪袁志敏
Owner GUANGDONG KINGFA TECH CO LTD
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