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Method for improving filtering performance of daily protective mask

A filter performance and mask technology, which is applied in the field of daily mask processing and preparation, can solve the problems of general filter performance of protective masks, difficulty in preventing small particle pollutants, and difficulty in getting out of the body, so as to meet the needs of breathing comfort and clean air. The effect of promoting sustainable development and improving filtration performance

Inactive Publication Date: 2020-12-11
安徽灵春医用耗材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing protective masks have average filtration performance, and it is difficult to prevent the inhalation of small particle pollutants, causing the particles to settle in the deep part of the upper respiratory tract, which is difficult to excrete from the body, causing irreversible damage to the human body

Method used

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  • Method for improving filtering performance of daily protective mask

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A method for improving the filtration performance of a daily protective mask. The prepared filter material film is used as a mask sandwich filter layer, and the surface layer and the back layer are made of non-woven materials, and processed into a folded flat mask with a thickness of 0.8 mm. Can.

[0014] The preparation method of described filter material film comprises the following steps:

[0015] Weigh 6.6 grams of polyvinylidene fluoride into a beaker, add 23 grams of dimethylformamide and 25 milliliters of absolute ethanol, and place the beaker on a magnetic stirrer at 20°C for 20 minutes at a speed of 340 rpm , add 1.35 grams of filter material to the beaker, continue to stir for 15 minutes, and then ultrasonically disperse for 40 minutes, the ultrasonic power is 80 watts, to obtain a uniformly dispersed mixture, heat to 70 ° C, and keep stirring to make the ethanol volatilize, and obtain a viscous material , using a car roller machine to continuously press the ...

Embodiment 2

[0018] A method for improving the filtration performance of a daily protective mask. The prepared filter material film is used as a mask sandwich filter layer, and the surface layer and the back layer are made of non-woven fabric materials, and processed into a folded flat mask with a thickness of 0.85 mm. Can.

[0019] The preparation method of described filter material film comprises the following steps:

[0020] Weigh 6.7 grams of polyvinylidene fluoride into a beaker, add 25 grams of dimethylformamide and 28 milliliters of absolute ethanol, and place the beaker on a magnetic stirrer at 23°C for 25 minutes at a speed of 350 rpm , add 1.38 grams of filter material to the beaker, continue to stir for 20 minutes, then ultrasonically disperse for 42 minutes, the ultrasonic power is 90 watts, to obtain a uniformly dispersed mixture, heat to 73 ° C, and keep stirring to make the ethanol volatilize, and obtain a viscous material , using a car roll machine to continuously press th...

Embodiment 3

[0023] A method for improving the filtration performance of a daily protective mask. The prepared filter material film is used as a mask sandwich filter layer, and the surface layer and the back layer are made of non-woven materials, and processed into a folded flat mask with a thickness of 0.9 mm. Can.

[0024] The preparation method of described filter material film comprises the following steps:

[0025] Weigh 6.9 grams of polyvinylidene fluoride into a beaker, add 28 grams of dimethylformamide and 30 ml of absolute ethanol, and place the beaker on a magnetic stirrer at 25°C for 30 minutes at a speed of 360 rpm , add 1.40 grams of filter material to the beaker, continue to stir for 25 minutes, and then ultrasonically disperse for 45 minutes, with an ultrasonic power of 100 watts, to obtain a uniformly dispersed mixture, heat to 76 ° C, and keep stirring to make the ethanol volatilize and obtain a viscous material , using a car roll machine to continuously press the film to...

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Abstract

The invention relates to a method for improving the filtering performance of a daily protective mask. The method is characterized in that a prepared filtering material film is used as a mask sandwichfiltering layer, a surface layer and a back layer are made of non-woven fabric materials, and the filtering material film, the surface layer and the back layer are processed into a folding flat mask.According to the method, the filtering material film can deeply filter particulate matters in air through physical and mechanical interception and electrostatic adsorption, and small particulate matters can also be easily captured by the filtering material, so that harm to a human body is avoided; the filtration efficiency cannot be significantly reduced along with the increase of the respiratoryflow, the protection requirements of the calm state, the light activity state and the high activity state can be met at the same time, moreover, the material has efficient filterability for the particulate matters and also has low respiratory resistance, so that wearing comfort is ensured, and discomfort of the human body cannot be caused; and compared with an existing protective mask, the comprehensive performance is optimal, the requirements of the human body for breathing comfort and clean air can be met at the same time, and the application applicability to high-pollution environment occasions is high.

Description

technical field [0001] The invention relates to the technical field of processing and preparation of a daily-use mask, in particular to a method for improving the filtration performance of a daily-use protective mask. Background technique [0002] At present, indoor and outdoor air pollution in our country is relatively serious, which constitutes a threat to people's physical and mental health to a certain extent. There have also been many persistent air pollution incidents at home and abroad, which have aroused widespread concern from the entire society. Masks can block pollutants such as dust, flying catkins, and droplets, and protect human health. They are important protective items in daily life. Of course, after experiencing the epidemic, people's awareness of protection has been greatly enhanced, and they have also realized the importance of masks. Naturally, masks have entered the daily life of the public as an important item for daily protection, and the protection o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A41D13/11B01D46/54B01D46/00
CPCA41D13/11B01D46/0001B01D46/0032B01D46/543
Inventor 汤现春刘会珍
Owner 安徽灵春医用耗材有限公司