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Novel coronavirus protective C-shaped mask

A mask and virus technology, applied in protective clothing, clothing, clothing, etc., can solve the problems of unsatisfactory virus filtering effect, complex structure of N99 masks, cumbersome production process, etc., and achieve good fit, airtightness, and good air permeability , the effect of efficient capture ability

Pending Publication Date: 2020-06-09
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The few N99 masks are expensive and have low output due to their complex structure and cumbersome production process
The best-selling protective PM in the market 2.5 Masks are good for PM 2.5 The mass concentration filtration efficiency can reach 95% or even more than 99%, but for the PM 2.5 The mass concentration is extremely low, but the number concentration can reach 4000-5000 virus particles or clusters per cubic centimeter, protecting PM 2.5 Masks still filter large particle aerosols, and the filtering effect on viruses is still not ideal

Method used

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  • Novel coronavirus protective C-shaped mask
  • Novel coronavirus protective C-shaped mask
  • Novel coronavirus protective C-shaped mask

Examples

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Effect test

Embodiment 1

[0028] A C-type mask for high-efficiency protection against the new coronavirus, its schematic diagram is as follows figure 1 shown. C-type mask 1# has a three-layer structure, which is the outer layer of polypropylene spunbond nonwoven fabric with holes 1, the middle layer of double-layer ultrafine denier electret meltblown fiber nonwoven fabric 2, and the polypropylene spunbonded nonwoven fabric with holes Inner layer 3. Perforated polypropylene spunbond nonwoven outer layer 1 has a weight per unit area of ​​25 g / m 2 , the weight per unit area of ​​the double-layer ultrafine denier electret melt-blown fiber nonwoven fabric middle layer 2 is 30 g / m 2 , the weight per unit area of ​​the inner layer 3 of the porous polypropylene spunbond nonwoven fabric is 30 g / m 2 .

Embodiment 2

[0030] A C-type mask for high-efficiency protection against the new coronavirus, its schematic diagram is as follows figure 1shown. C-type mask 2# has a three-layer structure, which is the outer layer of polypropylene spunbond nonwoven fabric with holes 1, the middle layer of double-layer ultrafine denier electret meltblown fiber nonwoven fabric 2, and the polypropylene spunbonded nonwoven fabric with holes Inner layer 3. Perforated polypropylene spunbond nonwoven outer layer 1 has a weight per unit area of ​​25 g / m 2 , the weight per unit area of ​​the double-layer ultrafine denier electret melt-blown fiber nonwoven fabric middle layer 2 is 50 g / m 2 , the weight per unit area of ​​the inner layer 3 of the porous polypropylene spunbond nonwoven fabric is 30 g / m 2 .

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Abstract

The invention belongs to the technical field of protective masks, and particularly relates to a new coronavirus protective C-shaped mask. A main body of the protective C-shaped mask is of a three-layer structure and sequentially comprises a polypropylene spun-bonded nonwoven fabric, a double-layer superfine denier electret melt-blown fiber nonwoven fabric and a polypropylene spun-bonded nonwoven fabric from outside to inside; and the C-shaped mask structure is composed of a left mask and a right mask, the edges of the left mask and the right mask are respectively provided with two arc-shaped edges, one of the arc-shaped edges is in abutted to form an arc-shaped middle joint, the edge of the upper portion of the left mask body and the edge of the upper portion of the right mask body are provided with a splayed inclined edge, the portion, close to the inner side of the nose bridge, of the splayed inclined edge is provided with a nose ridge line, and therefore the two wings of the nose bridge can completely cover the nose and the mouth of a wearer when the mask is worn, and no gap is generated between the two wings of the nose bridge. The protective C-shaped mask has an efficient newcoronavirus filtering effect and can reach the NIOSH (National Institute for Occupational Safety and Health in USA) N95 and N99 standards.

Description

technical field [0001] The invention belongs to the technical field of protective masks, and in particular relates to a C-type mask for high-efficiency protection against the novel coronavirus. Background technique [0002] Coronaviruses are a large class of viruses that widely exist in nature. The diameter of the virus particles is 60-120nm, the average diameter is 100nm, and they are spherical or ellipsoidal. The 2019 novel coronavirus (2019-nCoV, causing COVID-19) is the seventh known coronavirus that can infect humans. Common signs of patients infected with coronavirus include respiratory symptoms, fever, cough, shortness of breath and dyspnea. In more severe cases, infection can lead to pneumonia, severe acute respiratory syndrome, multi-organ failure, and even death. In order to protect the health and safety of themselves and others, the majority of residents wore masks to strengthen virus protection during the epidemic. At the same time, in the process of fighting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A41D13/11A41D31/14A41D31/30A41D31/26A41D31/02
CPCA41D13/11A41D31/14A41D31/30A41D31/26A41D31/02
Inventor 陈建民孙剑峰陈晖李丹隋国栋王琳
Owner FUDAN UNIV
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