Materials for air filtration

New nanofibrous material for air filtration is a three-layered material:


 


Supports - polypropylene or polyester spunbond, filter paper

Polymer composition of nanofibers is selected depending on the medium to be filtered

Materials developed by "EFTEK" LLC  provide:

  • improved efficiency of filtration of aerosols and fumes - up to 99.9999% 
  • high air and vapour permeability
  • ratio "filtration efficiency/resistance to air flow" is higher than for traditional materials

     
Filtration material with the particles of 0,3-0,4 mm diameter trapped      

      

Technical characteristics:

Supports Thickness, mm Nanofiber diameter, nm
Air permeability, l/m2s GOST R ISO 9237-99 Pressure drop, Pa at 1sm/s  lab tests

Filtration efficiency with respect to particles of 0,3 micron diameter

GOST R EN 779-2007

Filtration efficiency with respect to particles of 0,07  

micron diameter* 

GOST R 51251-99

1 Spunbonds 0,29±0,03 100±20 800±40 2,6±0,2 60±1 Not evaluated
2 Filter paper/spundond 0,45±0,05 100±20 700±40 2,9±0,2 70±2 Not evaluated
2 Spunbonds 0,29±0,03 100±20 360±20 5,7±0,3 80±2 Not evaluated
3 Spunbonds 0,29±0,03 100±20 250±20 8,0±0,4 89,5±0,5 75,00
4 Spunbonds 0,29±0,03 100±20 170±20 12±1 97,75 85,02
5 Spunbonds 0,29±0,03 100±20 140±10 15±2 98,45 93,04
6 Spunbonds 0,29±0,03 100±20 80±10 25±3 99,6 99,39
7 Spunbonds 0,29±0,03 100±20 40±5 50±5 99,998 99,98

* The materials with the filtration efficiency up to 99,9999% with respect to the particles of 0,3 micron may be produced upon request

Application of the materials:


  • consumer and industrial air filters
  • car cabin filters
  • personal protective equipment and disposable face masks
  • filtration of radioactive aerosols