Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-efficiency and low-resistance filter membrane and application thereof in mask fabric

A filter membrane and high-efficiency technology, applied in the field of filter materials, can solve the problems of weakening and disappearing of electrostatic adsorption, thick appearance of N95 masks, etc., and achieve the effects of high barrier efficiency, small breathing resistance and long service life

Pending Publication Date: 2021-02-19
泉州师范学院(石狮)生态智能织物工程技术研究院 +1
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, such as the N95 electrostatic adsorption mask has obvious defects
Since the relative humidity of human exhalation is far greater than 90%, as the wearing time increases, a large amount of water vapor in the exhalation will gradually accumulate and condense into a liquid state after leaving the respiratory tract and reaching the filter layer of the mask, making the melt blown cloth a conductor , leading to the weakening or even disappearing of electrostatic adsorption, and it is impossible to achieve long-lasting effective filtration
Secondly, due to the SMS three-layer structure, the N95 mask has a heavy appearance, and wearing it for a long time will affect the comfort of the human body.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-efficiency and low-resistance filter membrane and application thereof in mask fabric
  • High-efficiency and low-resistance filter membrane and application thereof in mask fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A preparation method of high-efficiency, low-resistance filter membrane and mask fabric, comprising the following steps:

[0017] Preparation of surface layer non-woven fabric: use low-melting-point crimped polyester staple fibers mixed with ES fibers for needle punching, the needle-punching frequency is 20 Hz, the web speed is 10 m / min, and the proportion of low-melting point polyester staple fibers is 10 wt%. After single-side ironing process, the calendering speed is 20m / min, the temperature is 130°C, and the surface layer needle-punched non-woven fabric is developed, with a grammage of 60g / m 2 .

[0018] Preparation of the inner composite filter membrane: A layer of nanofiber microporous membrane is constructed on the surface of the polyamide 6 microporous film by polyvinyl chloride electrospinning technology, the electrospinning voltage is 10KV, the spinneret distance is 5cm, and the thickness of the electrospun film is controlled to be 0.2 μm, the equivalent pore...

Embodiment 2

[0021] A preparation method of high-efficiency, low-resistance filter membrane and mask fabric, comprising the following steps:

[0022] Preparation of surface layer non-woven fabric: low-melting-point curly polyester staple fibers mixed with ES fibers were used for needle punching at a needle-punching frequency of 20 Hz and a web speed of 10 m / min, in which low-melting point polyester staple fibers accounted for 14 wt%. After single-side ironing process, the calendering speed is 20m / min, the temperature is 135°C, and the surface layer needle-punched non-woven fabric is developed, with a grammage of 65g / m 2 .

[0023] Preparation of the inner composite filter membrane: construct a nanofiber microporous membrane on the surface of the polyamide 66 microporous membrane by electrospinning polystyrene, the electrospinning voltage is 10KV, the spinneret distance is 6cm, and the thickness of the electrospun membrane is controlled to be 0.25μm , the equivalent pore diameter is 0.2μm,...

Embodiment 3

[0026] A preparation method of high-efficiency, low-resistance filter membrane and mask fabric, comprising the following steps:

[0027] Preparation of surface layer non-woven fabric: use low-melting point curly polyester staple fiber mixed with ES fiber for needle punching, acupuncture frequency 25Hz, web speed 15m / min, in which low melting point polyester staple fiber accounts for 18wt%. After single-sided ironing process, the calendering speed is 25m / min, the temperature is 135°C, and the surface layer needle-punched non-woven fabric is developed, with a grammage of 70g / m 2 .

[0028] Preparation of the inner layer composite filter membrane: A layer of nanofiber microporous membrane is constructed on the surface of the polyacrylonitrile microporous membrane by polyvinyl chloride electrospinning technology, the electrospinning voltage is 15KV, the spinneret distance is 7cm, and the thickness of the electrospun membrane is controlled to be 0.5 μm, the equivalent pore diamete...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
pore sizeaaaaaaaaaa
Basis weightaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-efficiency and low-resistance filter membrane and application thereof in mask fabric. The high-efficiency and low-resistance filter performance of the mask fabric is realized through a method of combining an electrostatic spinning nanofiber microporous composite membrane with non-woven fabric. The method specifically comprises the following steps: 1, preparing a non-woven fabric surface layer; 2, preparing a composite filter membrane inner layer; and 3, fitting a mask. According to the mask fabric, the BFE filtering efficiency of the mask fabric can reach 95% orabove, the PFE filtering efficiency can reach 95% or above, the respiratory resistance is 104-119 Pa, and the mask fabric has the advantages of being lasting in filtering, light, thin and breathable.

Description

technical field [0001] The invention belongs to the technical field of filter materials, and in particular relates to a high-efficiency, low-resistance filter membrane and its application in mask fabrics. Background technique [0002] Medical protective masks are a necessity in people's daily life. The masks that can protect against viruses on the market are mainly disposable medical masks and N95 / KN95 masks. The core of the two masks is melt-blown non-woven fabric. This type of mask mainly absorbs the nearby virus-containing droplets on the surface of the outer non-woven fabric through the enriched static electricity on the surface of the melt-blown non-woven fabric, and plays the role of filtering and isolating the virus. [0003] But such as the N95 type electrostatic adsorption mask has obvious defects. Since the relative humidity of human exhalation is far greater than 90%, as the wearing time increases, a large amount of water vapor in the exhalation will gradually a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D04H1/435D04H1/4382D04H1/46D06C15/00D06M17/00D01F6/10D01F6/22D01F6/12B32B27/36B32B27/32B32B27/02B32B27/12B32B27/30B32B27/34B32B7/12B32B37/06B32B37/12A41D31/02A41D31/04A41D31/14B01D39/14B01D39/16B01D46/54B01D61/14B01D69/12
CPCD01D5/003D01D5/0084D04H1/435D04H1/4382D04H1/46D06C15/00D06M17/00D01F6/10D01F6/22D01F6/12A41D31/02A41D31/04A41D31/145B32B5/022B32B5/26B32B27/34B32B27/306B32B27/30B32B27/12B32B7/12B32B37/06B32B37/1284B01D39/14B01D39/1623B01D61/147B01D69/12B01D46/543A41D2500/30A41D2500/52B32B2262/0276B32B2262/0238B32B2262/0253B32B2262/023B32B2307/724B32B2307/718B32B2571/00B32B2535/00
Inventor 陈杨轶李剑超张初阳齐欢田军
Owner 泉州师范学院(石狮)生态智能织物工程技术研究院
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com