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 100centidegree, the density of acid and alkali is high or the field of filtering solid 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, width, and lengths:

Weight Ranges from 200g/m2 to 2000g/m2

Thickness Ranges from 1.5mm to 6mm

Possible width from 1600mm to 2200mm, Max up to 3500mm.

Different Treatment are possible.

Features and benefits:

Smooth surface, more defined pore size and good air permeability

Low temperature resistance ( 88 - 110 centidegree )

Excellent resistant to hydrolysis, acids and alkalis.

Low fiber release, low density

Reasonable price

High mechanical characteristics

Application:

Galvanic industry and chemical industry

Pre filtering solvents and acids

Pre filter to extend final filter life

Final filter for noncritical filtrations

Liquid-solid sepration with strong acid and alkali conditions filter press

Air filtration under 100centidegree

 Composition                 PP/      PP ordinary scrim     PP/PP high strength scrim

Weight(g/m)                    500          550           650

Thickness (mm)                 2.1                   2.3          2.5

Air permeability(m3/m2.min)      12.6                  10.8         8.4

Tensile strength(N/5*20cm)       warp>960             >1200       >1500

     weft>1060            >1500       >1800

Tensile elongation (%)            warp<35              <35        <35

weft<55               <55        <55

Broken strength(Mpa/min ):       2.15                  2.10          2.10

Continuous working Tem(centidegree)  88                88           88

Short time working Tem(centidegree)   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