PERMEABILITY

   
 

The permeability for a plastic surface indicates gasses or fluids ability to permeate through the surface.

 

The permeability is expressed as the volume pr. time in relation to area and thickness. The permeability is also depending on temperature.

 

 

   
 
 

Moisture

(g. -mm/m²/24 hr)

Gasses

(cc.-mill/100 sq.in./24 hr -atm. / 25°C)

  23°C 38,7°C CO2 H2 N2 O2
PA 11   1,6 153-336 323 3,4-18 34-92
PA 12   1,6 153-336 323 3,4-18 34-92
PA 6   6,3-8,7 10-12 90-110 0,9 2,6
PUR (TPU)   15,7-29,5 450-1650   41-119 75-327
PVDF   1,0 5,5   9 14
PFA            
FEP   0,16 1670 2200 320 750
ETFE   0,65 250 - 10 25
PC   4,3 1075 1600 50 300
PVC (Soft)   2,0-12,0 300-6000     100-1000
LDPE   0,4-0,6 2700 1950 85-315 250-535
HDPE   0,1 580   42 185
EVA   0,8-12 6000   400 840
PP   0,27 500-800 1700 40-48 150-240

 

 
 

 

 

         
 

 

 

 

 

 

 

 

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