PP needle punched non woven filter felt has moreadvantages when compared with PET needle felt. It is acid andalkali resistant, but with a low intenerate point. So PP needlepunched felt are often used in liquid-solid separation field toequip with frame press filter, vacuum filter, bag filter centrifugeand other separating facility at below 100centigrade. 
We can change the normal PP needle felt performance byfinishing treatment such as singe, calendar, heat set, coat andmembrane.

Polypropylene(PP) needle felt

1)Low temperature resistance ( 88-110 °C)

2)Excellent resistant to hydrolysis, acids and alkalies.

3)Smooth surface, more defined pore size and good air permeability

4)Lower fiber release, Lower density,High mechanical characteristics

Detailed Description:

1) Material: polypropylene

2) Weight: 800gsm 

3) Thickness: 2.2mm 

4) Tensile strength (n/5 x 20cm): 

          a) Warp: 1,000 

          b) Weft: 1,100

5) Tensile elongation: a) Warp: <35% b) Weft: <55% 

6) Permeability (10-3m3/m2.S): 150 - 200 

7) Working temperature (oC): a) Continuance: <90 b) Instant: 110 

8) Surface treatment: singeing, calendaring

Features:

The PP needle felt has the lowest temperature resistance,with its reasonable price and excellent hydrolysis resistant,anti-acid,anti-abrasion,etc,And maily is applied to the low temperature and high humid conditions.

Application:

They are used in the 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 90°C