PPS (Ryton) needle felt
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PPS (Ryton) needle felt

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Hongyuan Envirotech manufactures a wide range of needle felt for dust filtration. Needle felt is a type of filter material composed of different chemical fibers such as Polyester, PP, Acrylic, PPS, Aramid, fiberglass, PTFE, and P84. Our needle felt is created using a special needle punching process and high strength filament scrim. We typically apply heat setting, singed and glazed finishes to the felt surface. Additionally, we offer PTFE and water and oil repellent finishes based on customer requirements and specific applications. Our advanced equipment and technology greatly enhance the cleaning capacity, stability, and filtering precision of our filter materials, resulting in extended service life. Our needle felt finds widespread usage in various industries including Metallurgy, Chemical industry, Cement, Power plant, Medicine, and Waste incineration plant.

PPS is an excellent material for filters due to its ability to withstand high temperatures, resist acids and alkalis, and resist hydrolysis. PPS filter bags are primarily used to remove dust from air that contains acid or alkali materials at high temperatures, such as in gas cleaning at thermal power plants or fume removal in waste incinerators.

At Hongyuan Envirotech, we use top-quality PPS fiber and employ advanced techniques like fine needle punching, surface treatment, and chemical treatment to make our filter bags durable and capable of meeting the diverse filtration needs of clients in various industries.

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: PPS

Scrim: PPS

Available weight: 350g/m2, 400g/m2, 450g/m2, 500g/m2, 550g/m2, 600g/m2

Treatment: Heat-set, singed and glazed, Water & Oil repellent, PTEF finish, e-PTFE membrane laminated

Service temperature: 160℃ continue, 200℃ maximum

Regular width: 2m-2.2m

Application: Thermal power plant, Coal-fired boilers, Waste incineration, Aluminum, etc.

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
301KA PPS 500±5% 10±25% 1.8±0.2 ≥800 ≥1300 ≤25 ≤50 PTFE finished  ≤160
301KM PPS 500±5% 4±25% 1.8±0.2 ≥800 ≥1300 ≤25 ≤50 with membrane ≤160
303KA PPS/PTFE 580±5% 10±25% 1.8±0.2 ≥700 ≥1100 ≤20 ≤30 PTFE finished ≤160
303KM PPS/PTFE 530±5% 4±25% 1.8±0.2 ≥700 ≥1100 ≤20 ≤30 with membrane ≤160
311KA PPS+PTFE/ PTFE 650±5% 10±25% 2±0.2 ≥800 ≥1200 ≤25 ≤50 PTFE finished  ≤160


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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