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Membrane filtration needle felt
The surface of polyetrafluorethylene (PTFE) membrane is smooth and anti-chemistry. PTFE membrane is bonded to the surface of conventional filter medium and eliminates the need for a primary dustcake. Filtration takes place on the membrane surface and realizes surface filtration. Because the PTFE membrane has the advantage of smooth, chemical stability, long service life and waterproof, it results in excellent dustcake release, high filtration efficiencies and longer service life.

Name
PTFE membrane needle felt
Material
General Film
High-strength fabric coated
Weight£®g/m2£©
450
500
550
600
400
450
500
550
600
Thickness£®mm£©
1.6
1.8
2.0
2.2
1.4
1.55
1.75
1.95
2.15
Air permeability £®L/m2/S£©
60
48
40
30
58
55
45
37
32
Tensile strength
£®N/5×20cm£©
Warp
>750
>750
>800
>800
>1000
>1000
>1100
>1100
>1150
Weft
>1150
>1200
>1300
>1400
>1250
>1300
>1400
>1500
>1500
Tensile Elongation£®£•£©
Warp
<35
<35
<35
<35
<25
<25
<25
<25
<25
Weft
<55
<55
<55
<55
<45
<45
<45
<45
<45
Broken strength£® Mpa/min £©
2.20
2.25
2.35
2.45
2.30
2.40
2.45
2.50
2.60
Continuous working temperature£®°ś£©
°‹130
°‹130
°‹130
°‹130
°‹130
°‹130
°‹130
°‹130
°‹130
Short time Working temperature£®°ś£©
150
150
150
150
150
150
150
150
150
Anti-acid
Good
Good
Anti-alkali
Fair
Fair
Anti-abrasion
Excellent
Excellent
The stability of water solution
Fair
Fair
Finishing treatment
Heating setting, PTFE membrane.
 
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