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MICROVAC filter media are PP microfibrous webs with the specific structure which predestinate them to be good filtration materials for air filtration. These material are high efficient while the pressure drop is lower compared with another types of textile filter media. Besides they are permanently electrostatically charged to improve the filtration parametres, in particular the parameter of filtration efficiency.

MICROVAC filter media made from polypropylene can be used up to temperature of 90ºC.
MICROVAC filter media are produced in maximum width of 100 cms on core 76 mm internal diameter.
MICROVAC filter media are environmentally friendly, after using they can be incinerated without any toxic combustion products.

MICROVAC filter media can be used for production of:

▪ industrial face masks
▪ surgical face mask
▪ vacuum cleaner bags
▪ composite filter media for bag filters
▪ air cabin filters
▪ high efficiency filters


MICROVAC filter media for industrial face mask

Code Basic weight Air permeability ∆p FE (NaCl) FE (par.) Filration class
  [gsm] [l/m2/s] [Pa] [%] [%] by EN 143
FNAE 1627 95/17 55 159 99,0 97,13 P2
FNAE 1652 45/17 230   87,6 61 P1 (s)
FNAE 1809 25/17 270 27 93,6 82 P1
2x FNAE 1809 25/17/25/17   95   94 P2
FNAE 1810 25/17 340 22 90,7 75 P1 (s)
FNAE 1780 45 320 33 94,84 79,34 P1 (s)
FNAE 1783 25 270 32 96,82 85,67 P1
FNAE 1780 + FNAE 1783 45/25 135   99,69 98,4 P2
45/25/25 85 131 99,96 99,78 P2
45/25/25/25 63 184 99,99 99,956 P3

MICROVAC filter media for surgical face masks

Code Basic weight Air permeability ∆p FE (NaCl) BFE (bacterial test)  
  [gsm] [l/m2/s] [Pa] [%] [%]  
FNAE 1722 24 320   85,4 99,3  

 

Filtration efficiency – FE- tested by EN 143, at face velocity 7,9 cm/s and loading of 120 mg of solid particles.

( FE (NaCl) - diam. of sample 11 cm and throughput of air of 45 l/min, FE (parafin) diam. of sample of 16 cm and throughput of air of 95 l/min).

We test our samples by ČSN EN 143 / A1 ( EN 143:2000/A1)  method at throughut of NaCl or Paraffine aerosol  of 95 l/min. The particle concentration is measured by photometer before and behind the filter. The test is finished while to the filter is loaded of 120 mg of tested aerosol. The filtration efficiency ( FE ) of tested sample have  to keep minimally the values as follow:
The filter class P1  - 80% , the filter class P2-  94%  and the filter class P3 - 99,5%.  

Permeability of air at 100 Pa.

Pressure drop (∆p) at throughput of air of 95 l/min

Bacterial filtration efficiency BFE  by ASTM F2101-01.2001, procedure Nelson Lab. Nr.SOP/ARO/007 J.1

Charged by TANTRETTM Technology. U.S. Patent Nos.5.401.446 and 5.686.050

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