Product Item: Membrane Needle Punched Felt (PTFE Coated Felt)
Product Introduction: Membrane makes the felt obtain the properties of membrane material, at   the same time felt keeps the original properties. . Generally, we use polytetrafluoroethylene   (PTFE) for membrane. Its surface is smooth with high air permeability, and it is waterproof. Its   chemical properties are stable. It can nearly retain all the particles in the dust gas, furthermore,   it can guarantee the largest air flow rate but not increase the running resistance. It is the ideal   filter material for dedusting. We largely produce high quality polyester, polypropylene   membrane needle punched felt, and special material of membrane felt, such as Aramid, PPS,   etc.

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Property Index:
  1.Polypropylene membrane needle punched felt
  Make the Polypropylene felt obtain higher working temperature, smoother surface. This can   make the cakes removal easier, and increase the filtration precise without change of large air   permeability.

material		PP+PTFE
weight (g/m2)		500
thickness(mm)		1.9
Air permeability (m3/m2/min)		≥12
Breaking strength (N/5*20cm)	war	≥1000
	weft	≥1000
Elongation (%)	warp	≤35
	weft	≤40
tenacity (Mpa/min)		2.55
Constant working temperature (℃)		110
Instant working temperature (℃)		150
Acid resistant		excellent
Alkali resistant		excellent
Abrasion resistant		excellent
Hydrolyze stability		excellent
finishing treatment		Singed, calendering

  2.Polyester membrane needle punched felt

material		PP+ PTFE
weight (g/m2)		500
Thickness (mm)		1.90
Air permeability (m3/m2/min)		13
Breaking strength (N/5*20cm)	warp	≥1000
	weft	≥1100
Elongation (%)	warp	≤35
	weft	≤40
Constant working temperature (℃)		130
Instant working temperature (℃)		150
Acid resistant		excellent
Alkali resistant		common
Abrasion resistant		excellent
Hydrolyze stability		common
Finishing treatment		Singed, calendering