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Planar mask for efficiently filtering PM 2.5

A high-efficiency filtration and mask technology, applied in protective clothing, clothing, applications, etc., can solve the problems of increased manufacturing cost, low filtration efficiency, breeding of bacteria, etc., to achieve outstanding barrier ability and capture ability, improve air permeability, and good air permeability Effect

Inactive Publication Date: 2014-03-19
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The filter material of the existing filter element filters PM 2.5 The effect is not ideal, the filtration efficiency is low, and the filter element structure formed by the filter material and the activated carbon layer or the PTFE layer is too complicated, and the air permeability will be greatly reduced, which will lead to the formation of water mist inside and on the surface of the mask, which will breed bacteria over time. The production process will be more cumbersome, resulting in a greatly increased manufacturing cost, and the 4-layer filter structure and the 3-layer filter structure are different for PM 2.5 The improvement of filtration efficiency is not obvious

Method used

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  • Planar mask for efficiently filtering PM 2.5
  • Planar mask for efficiently filtering PM 2.5
  • Planar mask for efficiently filtering PM 2.5

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A high-efficiency filter for PM 2.5 Flat face mask, as with filtering PM 2.5 Functional masks are used. structure as figure 1 As shown, including the mask body for covering the mouth and nose of the wearer, a pair of ear hooks 5 are extended from both sides of the mask body, and a pair of ear hooks 5 are used for hooking to the wearer's ear.

[0038] The body of the mask is a three-layer structure to form a layered shape. From outside to inside, there are the outer layer 1 of polypropylene spunbond nonwoven fabric, the middle layer of superfine denier electret meltblown fiber nonwoven fabric 2, and polypropylene spunbond nonwoven fabric. The inner layer 3 of the cloth, when the mask is worn, the inner layer 3 of the polypropylene spunbond nonwoven fabric faces the wearer, and the outer layer 1 of the polypropylene spunbond nonwoven fabric and the inner layer 3 of the polypropylene spunbond nonwoven fabric are evenly distributed with Breathable holes, the breathable ...

Embodiment 2

[0042] A high-efficiency filter for PM 2.5 The plane mask, shown in Structural Example 1, differs in that;

[0043] Ultrafine denier electret meltblown fiber non-woven fabric intermediate layer 2 unit area weight 25g / m 2 .

Embodiment 3

[0045] A high-efficiency filter for PM 2.5 The plane mask, shown in Structural Example 1, differs in that;

[0046] The superfine denier electret meltblown fiber non-woven fabric intermediate layer 2 has a unit area weight of 30g / m 2 .

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Abstract

The invention relates to a planar mask for efficiently filtering PM 2.5. The planar mask comprises a mask body used for covering the mouth and the nose of a wearer. A pair of ear hooking portions are formed on the two sides of the mask body in an extending mode and used for being hooked on the ears of the wearer. The mask body is of a three-layer structure in a stacked mode, and the three-layer structure comprises a polypropylene fiber spunbonded non-woven fabric outer layer, a superfine fiber electret melt-blown non-woven fabric middle layer and a polypropylene fiber spunbonded non-woven fabric inner layer in sequence from outside to inside. The weight per unit area of the superfine fiber electret melt-blown non-woven fabric middle layer is 20-60g / m<2>. The planar mask for efficiently filtering the PM 2.5 has the advantages of being high in filtration rate and low in choked flow, has prominent obstruction and capturing capability for the PM 2.5 and is good in breathability, low in weight, comfortable to wear and high in PM 2.5 filtering efficiency in high level. The filtering efficiency can reach up to more than 99%, the weight is low, and breathability and comfortable sensation of the mask are ensured at the same time.

Description

technical field [0001] The present invention relates to a kind of high-efficiency filtering PM 2.5 A flat mask belongs to the technical field of health care products. Background technique [0002] PM 2.5 It refers to the particulate matter in the atmosphere with an aerodynamic equivalent diameter of less than or equal to 2.5 μm, also known as lung-infiltrating particulate matter. High concentration PM 2.5 Pollution affects ambient air quality and human health. With the gradual implementation of new air quality evaluation standards across the country, and the emergence of large-scale persistent haze weather in many provinces and cities in my country in recent years, the "PM" 2.5 "Being in the spotlight. Thanks to PM 2.5 Particles have a great impact on ambient air quality and human health, and the public has shown great enthusiasm for masks. However, there are not many masks on the market that specifically protect against such fine particles, and there are absolutely no ...

Claims

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Application Information

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IPC IPC(8): A41D13/11
Inventor 陈建民孙剑峰朱超李卫军
Owner SHANDONG UNIV
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