Product Item: Polyester Filter Felt for Normal Working Temperature
Product Intorduction:
  Our polyester needle punched felt has the following characters:
  1.High tenacity and low elongation polyester yarn for scrim material, which enhances the   breaking strength
  2.Fine fiber: makes the felt more apertures with smaller opening to improve the filtration   precise.
  3.High quality polyester fiber: improves acid proof, alkali proof, and hydrolysis proof ability.
  4.Smoother surface: makes the filtration efficiency similar with membrane felt.
  5.Small running resistance: saves energy.

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Property Index:

material		polyester
Weight (g/m2)		500
Thickness (mm)		1.65
Air permeability (m3/m2/min)		≥15
Breaking strength (N/5*20cm)	warp	≥1000
	weft	≥1100
Elongation (%)	warp	≤35
	weft	≤40
Breaking strength ( Mpa/min)		2.90
Constant working temperature (℃)		130
Instant working temperature(℃)		150
Acid resistant		common
Alkali resistant		inferior
Abrasion resistant		excellent
Hydrolyze stability		inferior
After treatment		Singed, calendering