Polypropylene Needle Felt Filter Cloth

Features of Polypropylene Needle Felt Filter Cloth

• Chemical Stability: It has strong chemical stability and can work in various chemical environments without being corroded.
• Abrasion Resistance: Polypropylene fiber is relatively wear-resistant, so that the filter needle felt can maintain good performance in long-term use.
• Low Water Absorption: It has very low water absorption, so it maintains stable filtration performance even in wet conditions.
• Dimensional Stability: It is less sensitive to changes in temperature and humidity, which helps filter needle felt maintain stable dimensions and performance in various environments.
• Ease of Cleaning: Since it does not pick up contaminants easily, it is relatively easy to clean.

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Physical and Chemical Properties

Weight(gs/m)	500
Thickness(mm)	2~3.8
Width(mm)	≤2.2 m
Finish treatment	Singeing, Calendaring, Heat setting, Coating.
Air permeability(L/m2.s)	150-200
Tensile strength(N/5 cm)	warp	≥1700
	weft	≥2200
Tensile  elongation(%)	warp	≤20
	weft	≤30
Heat shrinkage(%)	warp	≤1.5
	weft	≤1.0
Temperature(°C/°F)	Continue	90 /194
	Instant	120 /248
Anti-acid	Excellent
Anti-alkali	Excellent
Anti-abrasion	Good
hydrolysis stability	Excellent

Specifications of Polypropylene Needle Felt

Para	Weight (g/sm)	Thickness (mm )	Air Permeability (m3/m2/min)	Tensile Strength (N/5×20cm)		Tensile Elongation(%)		Operating Temp.(°C/℉)	Max Surge Temp.(°C/℉)	Suitable P.H. value
Model	/	/	/	Warp	Weft	Warp	Weft	/	/	/
PP-01	550	3.5	10	1000	1500	50	50	130/266(Dry Heat)	150/302 (Dry Heat)	1~12
PP-05	400	2.5	20	500	1000	60	60			1~12
PP-10	400	2.2	24	500	1000	80	80			1~12
PP-25	400	3	35	500	1000	85	85			1~12
PP-50	320	3.5	100	500	600	100	80			1~12
PP-75	320	3.5	130	500	600	100	80			1~12
PP-100	350	3.8	100	500	500	100	100			1~12
PP-200	400	3.8	130	500	600	110	100			1~12

Polypropylene Needle Felt in Philite®

In addition to some of the advantages of ordinary needle-punched felt filter cloth, the high-quality polypropylene needle-punched felt produced by Philite® has better acid and alkali resistance and lower softening point than polyester fiber. It is used in smoke and dust temperatures below 100°C and Areas with high acidity and alkalinity. Used in conjunction with plate and frame rolling filters, vacuum suction filters, bag filters, centrifugal filters and other liquid filtration and separation equipment.

Post Processing

Post-processing of polypropylene needle felt involves various treatments to enhance its performance, durability, and suitability for specific applications.

• Heat Setting: Stabilizes the dimensions of the felt, reducing shrinkage and ensuring consistent thickness and density.
• Calendering: Increases the density and smoothness of the felt, which can enhance filtration efficiency.
• Singeing: Removes surface fibers and fuzz to create a smoother surface, reducing the potential for clogging and improving cake release in filtration applications.
• Coating: Enhances specific properties like chemical resistance, hydrophobicity, or filtration efficiency, such as PTFE (polytetrafluoroethylene) or other chemical-resistant materials.

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Our Product Advantages

The fiber is thin         The surface area is large       The filtration coefficient is large        The adsorption effect is better

Applications

• Air Filtration

Polypropylene needle felt is widely used in air filtration, such as air conditioning systems, clean rooms, ventilation systems, etc. It can effectively remove dust, smoke, pollen and other particulate matter in the air and improve air quality.

• Liquid Filtration

Polypropylene needle felt is widely used in liquid filtration, such as water treatment, chemical production, food and beverage production and other fields. It can effectively remove suspended matter, microorganisms, bacteria, etc. in the liquid to ensure the purity of the liquid.

• Dust Collection

In many industrial production processes, a large amount of dust will be generated, such as mining, metallurgy, wood processing, etc. It can effectively collect these dusts to prevent them from causing harm to the environment and the environment.

• Noise Control

It has good sound absorption and can be used in noise control fields, such as automotive interiors, building sound insulation, etc.

• Medical Field

It is also widely used in the medical field, such as medical masks, protective clothing, etc. It can effectively block the spread of viruses and bacteria and protect the safety of medical staff and patients.

• Agricultural Field

It can also be used in the agricultural field, such as soil improvement, plant protection, etc. It can effectively prevent the occurrence of pests and diseases and improve the yield and quality of crops.