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Protective mask

A mask and hydrophilic fiber technology, applied in the direction of protective clothing, clothing, clothing, etc., can solve the problems of poor protection effect and discomfort for the wearer, and achieve the effect of maintaining filtration efficiency, wearing comfort and prolonging the service life

Inactive Publication Date: 2020-09-29
FOSHAN UNITED MEDICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, during the wearing process, the contaminated part of the mask accumulates more and more moisture, which makes it uncomfortable to wear, and the possibility of virus accumulation or migration is greater, and the effect of protecting the wearer is getting worse.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] refer to image 3 and Figure 4 , protective mask of the present invention comprises mouth mask body and elastic ear band, and described elastic ear band is ultrasonically welded on the both sides of mouth mask body, and described mouth mask body comprises three-layer structure, and in the present embodiment, these three-layer structures have the same size, and the three-layer structure is welded to each other by ultrasonic waves.

[0060] The mask body includes the first layer and the second layer from outside to inside. The first layer is a hydrophobic filter layer, and the second layer is a hydrophilic filter layer. The hydrophobic filter layer faces the atmosphere, and the hydrophilic filter layer contacts the wearer's skin. , in the present embodiment, the hydrophobic filter layer is a blue 25-gram hydrophobic polypropylene spun-bonded non-woven fabric, and the hydrophilic filter layer is a 25-gram hydrophilic polypropylene spun-bonded non-woven fabric, and the co...

Embodiment 2

[0062] refer to image 3 and Figure 4 , similar to Example 1, the only difference is that the composition of the expanded hydrophilic fibers is different, in Example 2, the third layer is a 35 g / m2 air-through non-woven fabric, and the 35 g / m2 air-through non-woven fabric contains a weight of Percentage is the swelling hydrophilic fiber of 60%, and swelling hydrophilic fiber is made up of the bicomponent fiber of 40% carboxymethyl cellulose fiber and 60%, in the present embodiment, bicomponent fiber adopts PE / PP fiber ( It is called ES fiber in the market). In other embodiments, the bicomponent fibers may be other. The protective mask has a filtering effect of nano virus particles of 99.4%.

Embodiment 3

[0064] refer to image 3 and Figure 4 , similar to Example 1, the only difference is that the composition of the expanded hydrophilic fibers is different, in Example 3, the third layer is 30 g / m2 spunlace nonwoven fabric, The woven cloth contains 60% by weight of expanded hydrophilic fibers, and the expanded hydrophilic fibers are composed of 70% lyocell fibers and 30% chitosan fibers. The protective mask has a filtering effect of nano virus particles of 99.3%.

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Abstract

The invention relates to the field of protective articles, in particular to a protective mask which comprises a fabric or non-woven fabric containing expansible hydrophilic fibers, and the diameter ofthe expansible hydrophilic fibers after water absorption is larger than that of the expansible hydrophilic fibers before water absorption. Along with the increase of wearing time and the accumulationof water in the mask, the diameters of the expanded hydrophilic fibers are gradually increased; therefore, the porosity of a main filtering area (an area right facing the nose and the mouth) is adjusted; air in the breathing process is promoted to pass through the main filtering area (the area right facing the nose and the mouth) of the mask, other surrounding relatively-clean areas participate in air filtering in the breathing process, the filtering efficiency of the mask is kept, and therefore, the service life of the mask is prolonged, and the mask is more comfortable to wear. In addition,the expanded hydrophilic fibers can absorb condensed liquid water, a channel for viruses or bacteria to migrate in the liquid water is cut off, and a wearer is protected.

Description

technical field [0001] The invention relates to the field of protective equipment, in particular to a protective mask. Background technique [0002] At present, masks are a common means for people to prevent cross-contamination of various pollutants, especially to prevent the infection of some respiratory diseases. In the recent virus outbreaks such as SARS, H1N1, MARS and CONVID-19, masks have become the main measures for medical staff to prevent virus infection. At the same time, masks have also become the first line of defense for non-medical units or the public to prevent the spread of viruses. Some specially designed masks are also used by medical staff to protect themselves from various viruses. Medical staff are especially vulnerable to infection from patients because they work with many patients with known or unknown illnesses and must communicate verbally with patients. A patient's exhaled breath may contain highly contagious bacteria or viruses that may be inhal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A41D13/11A41D31/02A41D31/04A41D31/30A41D27/00
CPCA41D13/1192A41D31/305A41D31/04A41D31/02
Inventor 王晓东黄可聪黄浩俊赖文佳萧健鹏
Owner FOSHAN UNITED MEDICAL TECH
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