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PP needle punched felt
The PP needle punched felt is widely used in liquid-solid filtration. Besides some properties as ordinary filter felt have, the properties of anti-acid, anti-alkali and lower soften point of PP are better than polyester, and its stability of water solution is excellent, so PP needle punched filter felt is often used in the field with fume temperature under 100°ś, the density of acid and alkali is high or the field of filtering solid from liquid that the density of acid and alkali is high.

PP needle felt can be produced by ordinary staple scrim or high strength filament scrim, due to the customer demands with different thickness, wideth, and lengths:
Weight ranges from 200 g/m2 to 2000 g/ m2
Thickness ranges from 1.5mm to 6mm
Possible length from 160mm to 220mm, max up to 350mm
Different treatment are possible

Features and Benefits:
Smooth surface, more defined pore size and good air permiability
Low temperature resisitance ( 88-110 °ś)
Excellent resisitant to hydrolysis, acids and alkalis
Low fiber release, Low density
Reasonable price
High mechanical characteristics

Applications:
Galvanic industry and Chemical industry
Prefiltering solvents and acids
Prefilter to extend final filter life
Final filter for noncritical filtrations
Liquid-solid sepration with strong acid and alkali conditions filter press
Air filtration under 100°ś

Composition
PP/PP ordinary scrim
PP/PP high strength scrim
Weight£®g/m2£©
500
600
650
Thickness£®mm£©
2.1
2.3
2.5
Air permeability£®L/m2/S£©
200
150
110
Tensile strength£®N/5×20cm£©
Warp
°›1050
°›1200
°›1650
Weft
°›1500
°›1800
°›2150
Tensile elongation£®£•£©
Warp
<35
<35
<35
Weft
<55
<55
<55
Broken strength £®Mpa/min£©
2.32
2.57
2.86
Working temperature£®°ś£©
°‹90
°‹90
°‹90
Short working temperature£®°ś£©
110
110
110
Anti-acid
Excellent
Excellent
Excellent
Anti-alkali
Excellent
Excellent
Excellent
Anti-abrasion
Excellent
Excellent
Excellent
The stability of water solution
Excellent
Excellent
Excellent
Finishing treatment
Singeing or high temperature press
High temperature press both sides
 
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