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

Method for improving filter efficiency of melt-blowing non-woven fabric

A technology of melt-blown nonwovens and filtration efficiency, which is applied in textiles and papermaking, fiber treatment, physical treatment, etc. It can solve the problems of insufficient charge and charge stability, poor anti-aging performance of filter materials, and filtration efficiency to be improved. , to achieve good charge storage stability, improved anti-aging performance, and excellent anti-aging performance

Inactive Publication Date: 2015-11-11
C CLOUD FILTER
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is common now to use only the charge injection method to directly treat the electret of the melt-blown nonwoven fabric, such as corona charging method, liquid contact charging method, irradiation charging method, etc., using the above methods to directly charge the melt-blown nonwoven fabric Injection, the amount of injected charge and the stability of the charge are insufficient, resulting in the need to improve the filtration efficiency and poor anti-aging performance of the filter material

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
  • Method for improving filter efficiency of melt-blowing non-woven fabric
  • Method for improving filter efficiency of melt-blowing non-woven fabric
  • Method for improving filter efficiency of melt-blowing non-woven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Polarization of Meltblown Nonwovens

[0026] 1) Equipment cleaning: Wipe the electrode of the plasma treatment device and the electrode of the corona charging device, and the electrified conveying roller, guide roller and roller with ethanol, respectively, to prevent the occurrence of tip discharge and breakdown of the melt-blown nonwoven fabric. This results in a decrease in filtration performance.

[0027] 1.1) Threading: The melt-blown non-woven fabric was passed through the electrode of the plasma treatment device and the electrode of the corona charging device in turn, and passed through the charged conveying roller of the corona charging device.

[0028] 2) Plasma treatment: In an open atmosphere, at room temperature, relative humidity 30%, voltage 100V, current 0.20A, output frequency 20.0KHz, plasma treatment is performed on the melt-blown nonwoven.

[0029] 3) Corona charging treatment: in an open atmosphere, at room temperature, relative humidity 30%, voltage...

Embodiment 2

[0032] Polarization of Meltblown Nonwovens

[0033] 1) Equipment cleaning: Wipe the electrode of the plasma treatment device and the electrode of the corona charging device, and the electrified conveying roller, guide roller and roller with ethanol, respectively, to prevent the occurrence of tip discharge and breakdown of the melt-blown nonwoven fabric. This results in a decrease in filtration performance.

[0034] 1.1) Threading: The melt-blown non-woven fabric was passed through the electrode of the plasma treatment device and the electrode of the corona charging device in turn, and passed through the charged conveying roller of the corona charging device.

[0035] 2) Plasma treatment: in an open atmosphere, at room temperature, relative humidity 45%, voltage 150V, current 0.50A, output frequency 10.0KHz, plasma treatment is performed on the meltblown nonwoven.

[0036] 3) Corona charging treatment: in an open atmosphere, at room temperature, relative humidity 45%, voltage ...

Embodiment 3

[0039] Polarization of Meltblown Nonwovens

[0040] 1) Equipment cleaning: Wipe the electrode of the plasma treatment device and the electrode of the corona charging device, and the electrified conveying roller, guide roller and roller with ethanol, respectively, to prevent the occurrence of tip discharge and breakdown of the melt-blown nonwoven fabric. This results in a decrease in filtration performance.

[0041] 1.1) Threading: The melt-blown non-woven fabric was passed through the electrode of the plasma treatment device and the electrode of the corona charging device in turn, and passed through the charged conveying roller of the corona charging device.

[0042] 2) Plasma treatment: in an open atmosphere, at room temperature, relative humidity 75%, voltage 700V, current 2.50A, output frequency 5.0KHz, plasma treatment is performed on the meltblown nonwoven.

[0043] 3) Corona charging treatment: in an open atmosphere, at room temperature, relative humidity 75%, voltage -...

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

No PUM Login to View More

Abstract

The invention discloses a method for improving the filter efficiency of melt-blowing non-woven fabric. The method comprises the following steps that 1, equipment cleaning is carried out; 2, plasma treatment is carried out, wherein in the open atmospheric environment, plasma treatment is carried out on the melt-blowing non-woven fabric at room temperature and the relative humidity of 30%-75%; 3, corona charging treatment is carried out, wherein in the open atmospheric environment, corona charging treatment is carried out on the melt-blowing non-woven fabric obtained after plasma treatment at room temperature and the relative humidity of 30%-75%, and the polarized melt-blowing non-woven fabric is obtained. According to the method, a plasma treatment method and a corona charging method are combined, charge injection is carried out on electret of the melt-blowing non-woven fabric, so that the filter performance of the melt-blowing non-woven fabric obtained after electret treatment is more excellent, and more excellent anti-ageing performance is achieved.

Description

technical field [0001] The present invention relates to the polarization treatment of melt-blown non-woven fabrics, in particular, to a method for improving the filtration efficiency of melt-blown non-woven fabrics. Background technique [0002] Melt-blown non-woven fabric is used as air filter material, and its filtration efficiency can be effectively improved after electret treatment of melt-blown non-woven fabric. Now it is common to use only the charge injection method to directly treat the electret of the melt-blown non-woven fabric, such as corona charging method, liquid contact charging method, irradiation charging method, etc. The above methods are used to directly charge the melt-blown non-woven fabric. Injection, the amount of injected charge and the stability of the charge are insufficient, resulting in the filtration efficiency to be improved and the poor anti-aging performance of the filter material. SUMMARY OF THE INVENTION [0003] In order to overcome the ...

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
IPC IPC(8): D06M10/00D06M10/02
Inventor 李亚情张建朋梁振义罗丹徐哲
Owner C CLOUD FILTER
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