PTFE (Teflon) needle felt
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PTFE (Teflon) needle felt

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PTFE needle felt is created by combining PTFE scrim with PTFE staple fiber. It can be transformed into PTFE needle felt with membrane or PTFE impregnated needled felt after varied post-treatment, which is generally used for creating 100 percent PTFE filter bag applicable to diverse operating conditions and filter fineness requirements.

For high corrosivity, high temperature, and high humidity working conditions, 100 percent PTFE needle felt is often used. Currently, it is widely utilized in trash incineration, medical waste incineration, and the chemical sector.

Hongyuan Envirotech specializes in the production of PTFE (polytetrafluoretyhylene), also known as Teflon, which is widely regarded as the top plastic material. This is due to its exceptional properties, such as resistance to high temperatures (up to 280 degrees), corrosion resistance (suitable for pH levels ranging from 1 to 14), long lifespan, and non-stickiness. As a result, PTFE fiber is an excellent raw material for manufacturing industrial filter cloths.

Hongyuan Envirotech utilizes top-quality PTFE (Teflon) fiber and PTFE filament scrim in the production of their PTFE needle felt filter cloth (also known as Teflon needle felt filter cloth). The fiber is carefully needle punched into felt and undergoes special treatments such as singeing, glazing, heat setting, PTFE finish, and PTFE membrane lamination. The end result is a high-quality filter cloth that can be used in various industrial settings for dust collection (PTFE dust filter bag).

In addition to offering PTFE filter cloth rolls (for dust collection and liquid filtration), Hongyuan Envirotech also provides ready-made PTFE filter bags.

Fiber Characteristic

Tensile Strength
Chemical Acids Alkali Resistance Supports Combustion Continuous Temp(℃) Surge Temp (℃)
 Polypropylene Excellent Excellent Excellent Excellent Yes  93  93 
 Nylon Excellent Excellent Poor  Excellent Yes  93  93 
Good  Good  Very Good  Fair  Yes  127  140 
 Copolymer Acrylic Average  Fair  Good  Fair  Yes  110  120 
 Polyester Excellent Excellent Fair  Fair  Yes  135  149 
Aramid Very Good  Excel  Fair  Poor  NO 191  218 
PTFE Average  Fair  Excellent Excellent NO 232  260 
 Fiberglass Excellent Fair  Good  Fair  NO 260  288 
PPS Very Good  Excel  Excellent Very Good  NO 191  218 
P-84 Very Good  Excel  Very Good  Fair  NO 260  288 

Layer: PTFE

Scrim: PTFE

Available weight: 750g/m2, 800g/m2, 850g/m2

Treatment: PTEF finish, e-PTFE membrane laminated

Service temperature: 240℃ continue, 260℃ maximum

Regular width: 2m-2.2m

Application: Waste incineration, Chemical, etc.

Filter Media Roll goods for Dust filtration

• Fiberglass fabric with and without e-PTFE membrane

• Needle felt with and without e-PTEF membrane

• Material weight from 250g/m2 to 1000g/m2

• Roll length from 50m to 300m

• Shortest delivery time

• Customized and developed products as customer’s request

Spec   Item Layer/Scrim  Weight(g/m2)  Air
Thickness (mm) Warp Tensile Strength (N/50mm) Weft Tensile Strength (N/50mm) Warp Elong(%) Weft Elong(%) Treatment Continuous Temp
 600KY PTFE/ PTFE  750±5% 12±25% 1.6±0.2 ≥700 ≥700 ≤10 ≤10



 600KM  PTFE/ PTFE  750±5% 4±25% 1.6±0.2 ≥700 ≥700 ≤10 ≤10 with membrane ≤240



Q1. What is the packing way for needle felt roll goods?
A: Standard export packing with plastic bag and woven bag.


Q2. What’s the MOQ for each type?  
A: No problem to supply small quantity like 100lm or 50lm because we have stock or regular order for regular types.


Q3. Is it possible to get free sample?
A: Yes. Free sample can be provided by us.


Q4. What about the delivery time?
A: For regular order, within 4 weeks. It depends on the items and the quantity of the order.


Q5. Can you special customized products?
A: Yes, we can design and produce according customer’s request or sample.

For more than 20 years, Hongyuan Envirotech Co., Ltd. has been a leading manufacturer of filter material and filter bags for dust filtration industry. Hongyuan Envirotech has been committed to providing customers best filter material with comprehensive cost performance.

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 No.105, South of Binhai Road, Xishi Dist, Yinkou, Liaoning, China
 +86-150-4179-9965
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